Final answer:
Human genes enhance complexity through alternative splicing, wherein a single gene can produce multiple protein products, significantly expanding the human proteome compared to that of simpler organisms. Unique genes present in humans but missing in invertebrates also contribute to this complexity, as does genetic research on model organisms that share many core genes with humans.
Explanation:
An interesting fact about human genes that allows humans to be much more complex than organisms like fruit flies is the process known as alternative splicing. While humans have roughly 20,000 to 22,000 genes, which is not significantly higher than many simpler organisms, the complexity arises in how our cells can produce multiple proteins from a single gene. This means that the human proteome, the total number of different proteins, is much larger than that of the fruit fly or the roundworm, potentially up to 10 times larger due to the number of alternative splicing events.
Moreover, humans possess genes that are absent in invertebrates, which likely contribute to the added complexity and functions that distinguish vertebrates. These unique genes and the vast combination of genetic variations, contributed by both alternative splicing and regulatory mechanisms, give rise to the profound diversity observed in the human population. In addition, genetics research on simpler models like fruit flies is extraordinarily valuable for understanding human diseases, due to the commonality of core genes between these species.
Why are proton pumps in root-hair plasma membranes important?
Root-hairs increase the surface area for nutrition absorption. The proton-pumps in root-hair plasma membranes are important in plants is because they carry nutrients into the cell against a strong concentration gradient.
The DNA in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. For example, consider these two proteins: Phosphofructokinase (PFK) is an enzyme that functions in the cytoplasm during glycolysis. Insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. Assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations. For each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (Note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)
its the sperm cells and the Phosphofructokinase cells
Suppose a white-furred rabbit breeds with a black-furred rabbit and all of their offspring have a phenotype of gray fur. what does the gene for fur color in rabbits appear to be an example of? explain your answer.
deberia ser de los dos de blanco y negros por sus genes
Because of the large heat of __________ of water, the evaporation from a liquid surface is a very effective cooling mechanism. The human body makes use of evaporative cooling by __________ to give off energy even when surrounded by a temperature higher than body temperature.
➷ Because of the large heat of vaporization of water, the evaporation from a liquid surface is a very effective cooling mechanism. The human body makes use of evaporative cooling by perspiration to give off energy even when surrounded by a temperature higher than body temperature.
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If the mass of a material is 92 grams and the volume of the material is 25 cm3, what would the density of the material be?
= 3.68 g/cm³
Explanation;Density is given by dividing the mass of a substance by its volume.
Thus; Density = mass/ volume
In this case; mass = 92 g and Volume = 25 cm³
Therefore;
Density = 92 g/ 25 cm³
= 3.68 g/cm³
What does an egg contribute to the embryo that a sperm does not contribute?
a. polar bodiesb. organellesc. DNAd. germ cells
B. organelles
Explanation;Eggs contribute 50% of the chromosomes as well as cytoplasm and cellular mechanisms required for the cell to thrive and replicate. Mitochondria for example are particularly important to the embryo but are only passed from mother to child via the egg.Sperms on the other hand, are just packets of DNA.Photosynthesis takes place in what to make energy from sunlight to make food in plants
Photosynthesis takes place inside chloroplasts.
Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis. During the process of photosynthesis, plants release oxygen into the air. People and animals need oxygen to breathe.
Which of the following statements is not true about growth hormone? Growth hormone can be administered as a medical treatment for stature The quantity of growth hormone is greatest during childhood and adolescence. Too little growth hormone results in dwarfism. Growth hormone is produced by the posterior pituitary. Too much growth hormone results in gigantism.
The false statement is: Growth hormone is produced by the posterior pituitary
Growth hormone (GH) or somatotropin is produced in the cells called somatotrophs of the anterior pituitary gland. GH is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration. Its function is involved in metabolic processes (favors anabolism or synthesis of macromolecules). Also, growth hormone stimulates production of IGF-1 and increases the levels of glucose and free fatty acids.
Answer:
Growth hormone is produced by the posterior pituitary
Explanation:
It's produced in the anterior
in corn, purple kernels are dominant to yellow. a random sample off 100 kernels is taken from a population in hardy-weinberg equilibrium. it is found that 9 kernels are yellow and 91 kernels are purple. what is the frequency of yellow allele in this population?
The answer to this question is 0.3
The frequency of the yellow allele in this corn population is 0.3, calculated following the Hardy-Weinberg equilibrium principle, by taking the square root of the frequency of yellow kernels in the sample.
Explanation:In the case of corn color, we are dealing with a simple Mendelian inheritance where the purple color is dominant over yellow. Given that there are 9 yellow kernels (representing genotype 'yy') out of 100 allows us to calculate the frequency of the recessive,yellow allele. In a Hardy-Weinberg equilibrium, the frequency of a homozygous recessive genotype (like 'yy' for the yellow corn) is equal to the square of the frequency of the recessive allele, represented as q². Therefore, to calculate the frequency of the yellow allele ‘q’, take the square root of 9/100, equaling to 0.3. Thus, the frequency of the yellow allele in this corn population is 0.3.
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Why are pigments important to the process of photosynthesis?
Absorb Light
Reflect Light
It’s to absorb light!!
A patient is to receive 3 units of packed red blood cells over 8 hours. what will the nurse do to maintain the patency of the patient's iv access line after each of the first two units of blood has transfused?
D.
The nurse would maintain a separate access line if IV solutions or medications are to be administered. Medication is never injected into the same IV line used for a blood component. The blood product may be incompatible with the medication, and the blood component could become contaminated if the same IV line is used for another purpose.
Which of the following statements is true? A thin layer of chyme protects the lining of the digestive tract from being broken down by enzymes. Hydrochloric acid (HCl) begins the partial digestion of fats in the small intestine. Cystic fibrosis is an infectious disease that causes the muscles that control swallowing to malfunction. Heartburn often results when the gastroesophageal sphincter fails to close properly.
Final answer:
The true statement is that heartburn often results from the gastroesophageal sphincter failing to close properly. None of the other listed statements are true regarding the digestive system.
Explanation:
Among the statements provided, the true statement is that heartburn often results when the gastroesophageal sphincter fails to close properly. The gastroesophageal sphincter is responsible for sealing the top of the stomach to prevent stomach acids from flowing back up into the esophagus, which can cause discomfort and the sensation known as heartburn.
Contrary to one of the other statements, a thin layer of chyme does not protect the lining of the digestive tract; rather, it is a thick mucus lining that protects the stomach lining from digestive enzymes and hydrochloric acid. Moreover, hydrochloric acid is not responsible for the partial digestion of fats in the small intestine; that role is mainly played by bile and pancreatic lipase. Finally, cystic fibrosis is not an infectious disease, but a genetic disorder that affects various organs, including the lungs and the digestive system, without directly causing muscle malfunction that controls swallowing.
Which two organelles contain their own DNA genome, separate from the nuclear genome?
lysosomes and transport vesicles
endoplasmic reticulum and Golgi apparatus
cilia and flagella
mitochondria and chloroplast
ribosomes and vacuoles
Answer:
mitochondria and chloroplasts
Explanation:
Both mitochondria and chloroplasts contain their own DNA and ribosomes.
The cellular organelle most directly involved in maintaining homeostasis is the _______.
A. plasma membrane
B. cell wall
C. chloroplast
D. mitochondria
Answer:
A
Explanation:
The plasma membrane is significant in regulating the movement of molecules in and out of the cell through processes such as active transport, diffusion, and osmosis. An example is that when the cell becomes dehydrated, water is taken in by osmosis until normal levels are reached. Whenever byproducts of biochemical reactions accumulate in the cell, they are taken out the cell through active transport.
The process by which cells that were once mature and differentiated become undifferentiated and immature in appearance and behavior is known as ________.
I would go with anaplasia.
Answer:
Anaplasia
Explanation:
Anaplasia refers to the loss of cell differentiation, which occurs when cells that were previously mature and differentiated become undifferentiated and immature in appearance and behavior. Anaplasia is a fundamental point for the emergence of malignant diseases. Anaplasia is characterized by:
Cellular Pleomorphism: variation of shape and size of cells and their nuclei. Hyperchromasia: very dark colored nuclei. Abundant Mitoses: Indicates Proliferative Activity Polarity Loss: Formation of tumor masses that grow in an unorganized manner. Giant Tumor Cells: They have only one huge single polymorphic nucleus, with two or more nuclei. (Not to be confused with foreign body giant cells or inflammatory Langhans cells)When listing the levels of organization in organisms from smallest to lost complex which level is just below organs in
This is the smallest to largest in the organization of organisms: atom- molecule-cell-tissue-organ-organ system-organism. Tissue is just below organs.
Organisms are highly organized, coordinated structures that consist of one or more cells. Even very simple, single-celled organisms are remarkably complex: inside each cell, atoms make up molecules; these in turn make up cell organelles and other cellular inclusions. In multicellular organisms, similar cells form tissues. Tissues, in turn, collaborate to create organs (body structures with a distinct function). Organs work together to form organ systems.
if a dna molecule is made up of 7% thymine what percent of it would be guanine
Guanine would be 43%
ALL 4 BASES MUST EQUAL 100
SO 7 THYMINE +7 ADENINE =14
100-14 T&A=86 OF GUANINE AND CYTOSINE
86 G&C ÷2= 43 OF GUANINE AND CYTOSINE
Guanine would be present in 43%.
What do you mean by Nucleotides?Nucleotides may be defined as a combination consisting of a phosphate group, a sugar molecule, and a base. It forms the essential structural unit of nucleic acids such as DNA.
According to Chargaff's rule,
A = T; G = C
The amount of Thymine = 7%
∴ The amount of Adenine = 7%
Now, 100-14 = 86%.
So, the amount of guanine and cytosine = 86%
Therefore, the amount of Guanine = 43%
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Describe the process of skeletal muscle contraction by assembling the following 10 events in the proper order in paragraph form. Begin with an action potential traveling down a motor neuron to the neuromuscular junction and end with the muscle in its relaxed state. (5 points) 1) T and T system undergoes a conformational change, exposing the myosin binding sites on actin 2) myosin heads/cross bridges bind to actin and flex, shortening the sacromere 3) calcium ions bind to the T and T system 4) actin filaments are pulled toward the center of the sacromere, shortening the muscle fiber 5) muscle fiber is stimulated at the neuromuscular junction triggering an action potential 6) myosin head/cross-bridges bind to actin 7) APs travel down the T-tubules to the sarcoplasmic reticulum 8) in response to an AP, calcium ions are released into the cytosol/space around the myofibrils 9) calcium ions actively transported into the sarcoplasmic reticulum 10) myosin head continues to attach, flex, release, extend, and reattach as long as calcium ions are present
5) muscle fiber is stimulated at the neuromuscular junction triggering an action potential
7) APs travel down the T-tubules to the sarcoplasmic reticulum
Released acetylcholine (due to action potential within motor neuron) from the motor neuron initiates depolarisation within the sarcolemma, which is spread through the muscle fibre via T tubules.
8) in response to an AP, calcium ions are released into the cytosol/space around the myofibrils
Depolarisation causes the sarcoplasmic reticulum to release calcium ions necessary for the contraction
3) calcium ions bind to the T and T system
1) T and T system undergoes a conformational change, exposing the myosin binding sites on actin
6) myosin head/cross-bridges bind to actin
The binding sites for the myosin heads located on actin, are covered by a blocking complex (troponin and tropomyosin) that can be unblocked by the calcium binding
2) myosin heads/cross bridges bind to actin and flex, shortening the sacromere
4) actin filaments are pulled toward the center of the sacromere, shortening the muscle fiber
As the individual sarcomeres become shorten the muscle fibres as a whole contracts
10) myosin head continues to attach, flex, release, extend, and reattach as long as calcium ions are present
9) calcium ions actively transported into the sarcoplasmic reticulum
Relaxation of a muscle fiber occurs when a Ca ions are pumped back into the sarcoplasmic reticulum .
The process of skeletal muscle contraction involves a series of events that occur in a specific order, starting from an action potential and ending with muscle relaxation. Calcium ions play a crucial role in this process, binding to the T and T system and exposing the myosin binding sites on actin. The myosin heads then bind to actin, flexing and shortening the sarcomere, which leads to muscle contraction.
Explanation:The process of skeletal muscle contraction involves multiple events that occur in a specific order. First, an action potential travels down a motor neuron to the neuromuscular junction, stimulating the muscle fiber. This triggers the release of calcium ions from the sarcoplasmic reticulum into the cytosol. The calcium ions bind to the T and T system, causing a conformational change that exposes the myosin binding sites on actin. The myosin heads then bind to actin and flex, shortening the sarcomere. This pulling of actin filaments towards the center of the sarcomere shortens the muscle fiber.
The myosin heads continue to attach, flex, release, extend, and reattach as long as calcium ions are present. To maintain muscle relaxation, calcium ions are actively transported back into the sarcoplasmic reticulum. Additionally, the T and T system undergoes another conformational change that covers the myosin binding sites on actin, preventing further contraction.
In summary, the order of events in skeletal muscle contraction is: 1) Muscle fiber is stimulated at the neuromuscular junction, triggering an action potential; 2) APs travel down the T-tubules to the sarcoplasmic reticulum, causing the release of calcium ions into the cytosol; 3) Calcium ions bind to the T and T system, exposing the myosin binding sites on actin; 4) Myosin heads bind to actin and flex, shortening the sarcomere and pulling actin filaments towards the center of the sarcomere; 5) Myosin heads continue to attach, flex, release, extend, and reattach as long as calcium ions are present; 6) Calcium ions are actively transported back into the sarcoplasmic reticulum, leading to muscle relaxation.
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A trait has two alleles, p and q. If 20% of the alleles in a population are type p, what percent are type q? (enter number only, no % sign)
Darwin meets Mendel—not literally
When Darwin came up with his theories of evolution and natural selection, he knew that the processes he was describing depended on heritable variation in populations. That is, they relied on differences in the features of the organisms in a population and on the ability of these different features to be passed on to offspring.
Darwin described evolution as "descent with modification," the idea that species change and give rise to new species over extended periods of time and that all species can trace their descent to a common ancestor. Today, evolution is typically defined as a change in the genetic makeup of a population over generations—a definition that encompasses both the large-scale evolution Darwin envisioned and the smaller-scale processes we'll discuss in this article.
Natural selection is the mechanism that Darwin proposed to explain how evolution takes place and why organisms are typically adapted, well-suited, to their environments and roles.
The basic idea of natural selection is that organisms with heritable traits that help them survive and reproduce—in a certain environment—will leave more offspring than organisms without those traits. Because the traits are heritable, they will be passed on to the offspring, who will also have a survival and reproduction advantage. Over generations, differential survival and reproduction will lead to a progressive increase in the frequency of the helpful traits in the population, making the population as a group better-suited to its environment.
Natural selection is not the only mechanism of evolution. Populations can also change in their genetic composition due to random events, migration, and other factors. However, natural selection is the one mechanism of evolution that consistently produces adaptation, a close fit between a group of organisms and its environment.
Darwin did not, however, know how traits were inherited. Like other scientists of his time, he thought that traits were passed on via blending inheritance. In this model, parents' traits are supposed to permanently blend in their offspring. The blending model was disproven by Austrian monk Gregor Mendel, who found that traits are specified by non-blending heritable units called genes.
Although Mendel published his work on genetics just a few years after Darwin published his ideas on evolution, Darwin probably never read Mendel’s work. Today, we can combine Darwin’s and Mendel’s ideas to arrive at a clearer understanding of what evolution is and how it takes place.
Microevolution is sometimes contrasted with macroevolution, evolution that involves large changes, such as formation of new groups or species, and happens over long time periods. However, most biologists view microevolution and macroevolution as the same process happening on different timescales. Microevolution adds up gradually, over long periods of time to produce macroevolutionary changes.
Let's look at three concepts that are core to the definition of microevolution: populations, alleles, and allele frequency.
Populations
A population is a group of organisms of the same species that are found in the same area and can interbreed. A population is the smallest unit that can evolve—in other words, an individual can’t evolve.
Alleles
An allele is a version of a gene, a heritable unit that controls a particular feature of an organism.
For instance, Mendel studied a gene that controls flower color in pea plants. This gene comes in a white allele, w, and a purple allele, W. Each pea plant has two gene copies, which may be the same or different alleles. When the alleles are different, one—the dominant allele, W—may hide the other—the recessive allele, w. A plant's set of alleles, called its genotype, determines its phenotype, or observable features, in this case flower color.
Phenotype—flower color
Genotype—pair of alleles
Allele frequency refers to how frequently a particular allele appears in a population. For instance, if all the alleles in a population of pea plants were purple alleles, W, the allele frequency of W would be 100%, or 1.0. However, if half the alleles were W and half were w, each allele would have an allele frequency of 50%, or 0.5.
In general, we can define allele frequency as
Total number of A/a gene copies in population
Number of copies of allele Ain population
start subscript, i, end subscript_ alleles of a gene). In that case, you would want to add up all of the different alleles to get your denominator.
Let’s look at an example. Consider the very small population of nine pea plants shown below. Each pea plant has two copies of the flower color gene.
The frequencies of all the alleles of a gene must add up to one, or 100%.
Phenotype frequency: How often we see white vs. purple
Allele frequency: how often we see each allele
Where are over half the bones in the skeleton located
probably by the ribs or something as it protects the Lungs the Heart and the Stomach
Which layer of the alimentary canal is responsible for segmentation and peristalsis?
A) Serosa
B) muscularis externa
C) mucosa
D) submucosa
Answer:
B) muscularis externa
Explanation:
Muscularis externa is a muscle layer of gastrointestinal tract (GI)that consists of an inner circular muscular layer and a longitudinal outer muscular layer.
Peristalsis is one-way contraction (followed by relaxation) of muscles found in GI which moves the caudal direction. Peristalsis involves rhythmic contractions of the longitudinal muscles in the gastrointestinal tract, most commonly in the eosophagus.
Segmentation is also process of muscular contractions in the GI. Segmentation involves contractions of the circular muscles in the digestive tract and its function is to move chyme in both directions.
The muscle layer responsible for segmentation and peristalsis in the alimentary canal is the muscularis externa, which comprises an inner circular layer and an outer longitudinal layer.
Explanation:The correct answer to which layer of the alimentary canal is responsible for segmentation and peristalsis is B) muscularis externa. This layer is also known simply as the muscularis. It is composed of two main muscle layers: an inner circular layer and an outer longitudinal layer. Together, these muscle layers are crucial for performing the movements that facilitate the physical breakdown of food (mechanical digestion) and propel the food through the digestive tract.
Segmentation refers to the alternating contractions and relaxations of nonadjacent segments of the intestine. This process breaks apart the food and mixes it thoroughly with digestive juices. Peristalsis, on the other hand, involves rhythmic, wave-like muscle contractions that move the food along the alimentary canal. Both functions are essential for the efficient digestion and transportation of food within the alimentary canal.
Which layer of the digestive tract controls digestive propulsion?
A. serosa
B. mucosa
C. submucosa
D. muscularis externa
Answer:
D. muscularis externa
Explanation:
The gastrointestinal tract or digestive tract consist of four main layers:
• Mucosa- consists of the epithelium together with glandular tissue and the lamina propria (connective tissue)
• Submuscosa- consists of fibrous connective tissue with larger blood vessels, lymphatics, nerves..
• Muscularis externa-smooth muscle layer that consists of three layers, responsible for movement (propulsion) and physical break down of the food
• Serosa-consists of connective tissue continuous with the peritoneum.
In what states can hydroelectric power be found? (United States) *will give brainiest!
The hoover dam is a great example! :D
New York has the largest hydroelectricity generation capacity of all states east of the Mississippi River!
how can multimedia presentations capture people's attention in a positive way
They end up being entertaining
What do scientists hope to accomplish using recombinant DNA?
Ability to prevent infectious disease
Replacement of defective genes with normal genes
Easy access to medical treatment for individuals with any genetic disease
Cheaper medications for those with single-gene diseases
The correct answer is: Replacement of defective genes with normal genes
Recombinant DNA molecules are made in laboratory by the methods of genetic recombination such as molecular cloning. The aim of these methods is to bring together genetic material from different sources, creating “combinations” that usually couldn’t be found in the genome. The process of recombination is possible because, DNA molecules from all organisms share the same chemical structure (nucleotides are same among different species, difference is only in the nucleotide sequence).
Scientists hope to accomplish several goals using recombinant DNA technology, including the prevention of infectious diseases, the replacement of defective genes with normal genes, and the development of cheaper medications for single-gene diseases.
Explanation:Scientists hope to accomplish several goals using recombinant DNA technology. One goal is the ability to prevent infectious diseases. This can be achieved by creating vaccines and other preventive measures using recombinant DNA techniques. Another goal is the replacement of defective genes with normal genes. This can potentially cure genetic diseases by replacing the faulty gene with a functional one. Lastly, scientists hope to use recombinant DNA technology to develop cheaper medications for those with single-gene diseases, making medical treatment more accessible.
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If a drug that was an inhibitor of PP1 activity was ingested by a person
Glycogen phosphorylase would be de-phosphorylated and inactive.
Glycogen phosphorylase would be de-phosphorylated and retain some activity.
Glycogen phosphorylase would remain phosphorylated and inactive.
Glycogen phosphorylase would remain phosphorylated and retain some activity.
The correct answer is: Glycogen phosphorylase would remain phosphorylated and retain some activity.
Glycogen phosphorylase is directly involved in the regulation of glucose levels since it is a glucose sensor in liver cells: when glucose levels are low, phosphorylase is active and it has PP1 bound to it (phosphatase activity of PP1 is prevented). Therefore, there phosphorylase a will accelerate glycogen breakdown.
In African areas that are prone to malaria having normal blood leaves you prone to contracting malaria and death. Having sickle cell anemia makes your blood unable to effectively transport oxygen and typically leads to early death. However, being heterozygous for normal blood and sickle cell anemia leads to the blood being able to effectively transport oxygen and resistance to malaria, allowing for a longer life expectancy.
Is this Directional, Stabilizing, or Disruptive selection
Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
how does the circulatory system and respiratory system related to ATP and cellular respiration?
The Respiratory system controls the intake of oxygen and the exhale of waste products such as carbon dioxide from our circulatory system. The lungs control the gas exchange between our respiratory system and our circulatory system. Once the nutrients are in the blood stream, the circulatory system, red blood cells and white blood cells and other cells floating through arteries, all controlled by the pumping of the heart. Once the nutrients inhaled by the respiratory system are brought to the cells by the circulatory system (from the pulmonary vein to the heart to the arteries) through the much smaller capillaries, they are used in cellular respiration. The oxygen is used to help the products of glycolysis enter the mitochondria to produce more ATP.
The waste products are then put back into the circulatory system through the capillaries. The circulatory system then takes the nutrients through veins back to the heart where it is then put through the pulmonary artery to the lungs. Once in the lungs gas exchange occurs, expelling the waste products and reoxygenating the blood.
Source: https://sites.google.com/a/student.oprfhs.org/ap-biology-interdependence/interdependence/interdependence-of-the-circulatory-system
Hopefully this helps you with your confusion!
Bacteria that live around deep-sea, hot-water vents obtain energy by oxidizing inorganic hydrogen sulfide belched out by the vents. They use this energy to build organic molecules from carbon obtained from the carbon dioxide in seawater. These bacteria are _____. See Concept 27.3 (Page 579) View Available Hint(s) Bacteria that live around deep-sea, hot-water vents obtain energy by oxidizing inorganic hydrogen sulfide belched out by the vents. They use this energy to build organic molecules from carbon obtained from the carbon dioxide in seawater. These bacteria are _____. See Concept 27.3 (Page 579) chemoautotrophs photoautotrophs chemoheterotrophs photoheterotrophs
The correct answer is: chemoautotrophs
Since these bacteria obtain energy by the oxidation of electron donors (inorganic hydrogen sulfide) in their environments (chemical reactions) we can classify them as chemotrophs. In addition, they synthesize all necessary organic compounds from CO2 so they are autotrophs (opposite from heterotrophs that are unable to fix carbon).
Bacteria that live around deep-sea, hot-water vents and obtain energy by oxidizing inorganic hydrogen sulfide and using this energy to build organic molecules from carbon dioxide in seawater are chemoautotrophs.
Explanation:The bacteria that live around deep-sea, hot-water vents and obtain energy through oxidizing inorganic hydrogen sulfide and using this energy to build organic molecules from carbon dioxide in seawater are chemoautotrophs. Chemoautotrophs are organisms that can use inorganic compounds as a source of energy to convert carbon dioxide into organic matter.
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Which organism has fur and mammary glands, but does NOT have opposable thumbs? A) The lizard B) The salmon C) The hamster D) The chimpanzee
your answer is c. the hamster
Well, neither lizards or salmon have fur so A and B are wrong. The question asks which does not have opposable thumbs. The chimpazee does have them, so the answer is C.