Outline the evolution of monotreme, marsupial, and placental mammals.
Evolution of Monotreme: About 150 million years ago, the first monotreme have evolved. Early fossils of monotreme have been found in Australia. A genus called steropodon is an example.
Evolution of Marsupial: About 150 million years ago, the first marsupial have evolved. A genus called sinodelphys which was about 6 inches long is an example of earliest found extinct genus.
Evolution of Placental mammals: About 110 million years ago, the earliest placental mammal have evolved. The extinct genus eomaia is an example of this. It was only 4 inches long.
Answer:
Evolution of Monotreme: About 150 million years ago, the first monotreme have evolved. Early fossils of monotreme have been found in Australia. A genus called steropodon is an example.
Evolution of Marsupial: About 150 million years ago, the first marsupial have evolved. A genus called sinodelphys which was about 6 inches long is an example of earliest found extinct genus.
Evolution of Placental mammals: About 110 million years ago, the earliest placental mammal have evolved. The extinct genus eomaia is an example of this. It was only 4 inches long.
Explanation:
___________ is the branch of biology that names and classifies species.
MULTIPLE CHOICE I THINK ITS B JUST CHECKING
Based on the figure below, how does the prion protein differ from the normal protein?
A. The prion has a different chemical formula.
B. The prion has a different shape.
C. The prion is much larger.
D. The prion is more spherical.
Which statement about soil color is true?
a-Soils vary in color based on their depth.
b-Soils do not vary in color based on their depth.
c-Soils close to Earth's surface are always darker.
d-Soils far from Earth's surface are always darker.
The statement that is true about soil color is a-Soils vary in color based on their depth.
Whst is a soil?Soil is the upper or top mostvlayer of the earth that support existence of plants and are use for various things by man.
They are use for construction, buildings and many more.
Therefore, The statement that is true about soil color is a-Soils vary in color based on their depth.
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What is the body system that consists of specialized glands and that affects growth, development, sexual activities, and health of the body?
Which food is at a temperature that allows bacteria to grow fastest servsafe?
The temperature in food that makes bacteria to grow faster is called the danger zone in which it has a temperature of 40 degrees Fahrenheit up until one hundred forty degrees Fahrenheit. Within twenty minutes with the exposure of this temperature, it has the ability to double the numbers of the bacterial growth in the food.
Why might scientists be interested in making transgenic organisms?
Transgenic organisms glow in the dark and provide a light source in dark places.
Transgenic organisms can produce a desired product that may benefit other organisms.
Transgenic organisms can be used to cut strands of DNA molecules into fragments.
Transgenic organisms can be used as a medium to transfer foreign DNA into a host cell
The right answer is Transgenic organisms can produce a desired product that may benefit other organisms.
A transgenic organism contains DNA combining stably integrated in all its cells. In other words, the organism, be it a plant, an animal or a microorganism, has a new piece of DNA embedded in it. a chromosome in each of its cells. This "new piece" of DNA usually contains a gene from another organism (plant, animal or other) that has been modified to be expressed in the new organization. A transgenic organism may even possess the DNA of another organism of the same species. The inserted gene can be called the transgene.
Currently, diabetics are treated by injecting insulin from either a healthy human donor or cultures of genetically modified (transgenic) bacteria that secrete the protein.
Consider the activity and specificity of the three enzymes. Pepsin is most active in the human ________ and helps to digest __________. A) mouth; starch B) mouth; protein C) stomach; protein D) small intestine; lipids
C) stomach; protein
Answer:
The correct answer is C) stomach; protein
Pepsin is an endo-peptidase i.e. it breaks down peptide bond and thus helps in breaking down proteins or larger polypeptide chains into smaller chains.
It is secreted as pepsinogen (zymogen) by chief cells in the stomach. HCl (hydrochloric acid) released from parietal cells in the stomach converts pepsinogen into its active form pepsin.
It usually cleaves at the C-terminal side of amino acids such as tyrosine, phenylalanine, and tryptophan.
Match each kind of scientist with an aspect of the hot spring she or he might study.
A. Geologist
B. Ecologist
C. Sociologist
D. Meteorologist
Relationships between organisms and the hot spring.
Human behavior around the hot spring.
Rocks around and under the hot spring.
Atmosphere and weather around the hot spring.
Answer: A. Geologist : rocks around and under the hot spring
B. ecologist : relationships between organisms and the hot spring
C. sociologist : human behavior around the hot spring
D. meteorologist : atmosphere and weather around the hot spring
A hot spring a natural phenomena or human induced phenomena, in which the hot groundwater comes out from the earth's crust, which is heated geothermally by heat present in the geosphere.
A. Geologist : rocks around and under the hot spring
A geologist is a scientist which will likely to find cause of the hot spring that is related to the types of rocks, gases if any present inside the crater from where the water comes up.
B. ecologist : relationships between organisms and the hot spring
An ecologists is a scientists who observes the interaction of living beings with their external physical environment and also interaction that occurs among the species. An ecologists will likely to find the impact of hot spring on the organisms living around the hot spring.
C. sociologist : human behavior around the hot spring
A sociologists is a professional who studies the interaction among different population of the human beings. A sociologist will likely to find the response or reaction of a human society towards the hot spring.
D. meteorologist : atmosphere and weather around the hot spring
A meteorologist is a scientist who studies the weather conditions. The meterologist will likely to find the impact of the hot spring on the atmosphere. As the water liberated is extremely hot, the impact of hot water on the atmosphere and weather conditions can be studied by the meteorologist.
n which structure of the female reproductive system are eggs produced? cervix fallopian tube ovary uterus
The ovary is the reproductive organ that helps in the production of an egg.
Further explanation:
The female reproductive system performs several functions. It produces egg cells that are required for the survival of human species. The ova are produced for the fertilization that occurs in the fallopian tubes. The egg is released by the process called ovulation from the ovaries. The fusion of egg and sperm takes place in the fallopian tube, which is than implant in the uterus wall till the next steps or further stages of pregnancy take place. It also helps in the production of several hormones. It is called female sex hormones that are required to maintain the pregnancy.
This system consists of a pair of ovaries, oviducts, vagina, cervix, and uterus. It resides in the pelvic part of the female body. Ovaries (female sex organ) are present on each side of the abdominal cavity. It is about two to four centimeters in length and is connected to the uterus through ligaments. They are divided into two parts, the outer cortex and the inner medulla. The outer cortex contains several ovarian follicles, which are the basic unit of female sex organs. The inner medulla is a highly vascular stroma. It contains embryonic mesenchyme, blood vessel, nerves and lymphatic vessels that are required for the growth of a follicle.
Learn More:
1. Learn more about meiosis https://brainly.com/question/1600165
2. Learn more about the process of molecular diffusion in a cell https://brainly.com/question/1600165
3. Learn more about human sperm and egg cell https://brainly.com/question/1626319
Answer Details:
Grade: High School
Subjects: Biology
Chapter: Reproduction
Keywords:
Reproductive system, egg, survival, ovulation, fallopian tube, pregnancy, hormones, ovaries, medulla, cortex, uterus, follicles, stroma, mesenchyme, lymphatic, vagina, cervix.
The main role of ____ in supporting physical activity is to serve as an antioxidant, protecting tissues from oxidation.â
Which operant conditioning process must researchers use to encourage closer and closer approximations of a target behavior? A. stimulus generalization B. acquisition C. extinction D. shaping
The correct answer is D. Shaping.
Target behaviour is termed as the behavior which is being identified to change the behaviour which is prescribed.
The behaviour can be identified by topography or by function.
There are different types of behaviours, for example,
1. Agressive- the act of anger which is unplanned tends to hurt something or someone.
2. Assertive.
3. Passive.
4. Passive-aggressive.
The basic kind of behaviour is operant behaviour because it acts or operates in an environment. The other one is consequence influence.
At the end of a shift, a labor and delivery nurse leaves a woman in labor before the nurse's replacement arrives. what kind of negligence does this constitute?
2. Give a brief description of how biological dyes work. (2 pts)
Translation of mRNA into segments of tRNA allows which organic molecules to combine to form proteins at the ribosome?
complex carbohydrates
nucleic acids
simple carbohydrates
amino acids
lipids
Answer:
the right answer here is amino acids, not lipids.
Explanation:
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Which term means stricture or narrowing of the rectum?
Classify each of the following as homozygous dominant, heterozygous, or homozygous recessive.
A.Gg
B.rr
C.TT
D.Does not include any dominant alleles
E.Does not include any recessive alleles
The nurse is performing a nutritional assessment on an 80-year-old patient. the nurse knows that physiologic changes can directly affect the nutritional status of the older adult and include:
The nurse should know the physiological changes that an elderly could inhabit due to late age, the nurse would likely assess the elderly has a slow motility in gastrointestinal, has decrease absorption in the gastrointestinal, has taste sensitivity and has decrease in visual acuity where they sight is not as clear as before.
A/an ________ is a malignant tumor of the bone making cells of the red one marrow
Stacie was adopted. Her adoptive mother is a talented painter. Stacie also enjoys painting and drawing. Stacie's interest in art is which kind of trait?
Explanation:
Since, it is given that Stacie was adopted so it is obvious that whatever she will learn or acquire knowledge will be based on her upbringing and surroundings.
For example, Stacie's adoptive mother was a talented painter that is why Stacie also enjoys painting and drawing.
Therefore, it is an acquired trait by Stacie from her adoptive mother.
A solution that has a greater concentration than a cell it would be a ____ solution
Sensory neurons have a resting potential based on the efflux of potassium ions (as demonstrated in activity 1). what passive channels are likely found in the membrane of the olfactory receptor, in the membrane of the pacinian corpuscle, and in themembrane of the free nerve ending?
The types of passive channels found in these sensory neurons include sodium and potassium ion channels. The olfactory receptor uses sodium channels triggered by odorant molecules, the Pacinian corpuscle employs mechanosensitive ion channels, and free nerve endings utilize ion channels sensitive to temperature and chemicals.
Explanation:The passive channels likely found in the membranes of the olfactory receptor, Pacinian corpuscle, and free nerve ending are predominantly ion channels that are selective for sodium and potassium ions. These ion channels include leakage channels, which are always open and allow ions to move according to their concentration gradient; and gated channels, which open or close in response to certain stimuli.
In the olfactory receptor, a special type of sodium channel is utilized that opens upon the binding of an odorant molecule. For the Pacinian corpuscle, which is sensitive to vibration and pressure, mechanosensitive ion channels are used that open in response to physical distortion of the cell membrane. Lastly, for free nerve endings, which are involved in pain perception, temperature-sensitive ion channels (like the TRPV1 channel) and ion channels responsive to chemicals (like the ASIC channels for acid sensing) are utilized.
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Heme iron is absorbed better than non-heme iron.
a. True
b. False
Glucose + glucose —> _____ by _____. glucose + glucose —> _____ by _____. cellulose + water ... hydrolysis maltose + water ... dehydration synthesis starch + water ... dehydration synthesis lactose + water ... hydrolysis sucrose + water ... dehydration synthesis
Glucose and glucose can form maltose through dehydration synthesis, while cellulose can be broken down into glucose through hydrolysis. Sucrose can also be formed through a condensation reaction, and glucose and galactose combine to form lactose.
Explanation:In biology, glucose and glucose can be combined through a dehydration synthesis reaction, which forms maltose and a water molecule. Conversely, cellulose can be broken down into glucose and water through a hydrolysis reaction. Additionally, other reactions involving glucose include the formation of sucrose through condensation reaction and the formation of lactose through the combination of glucose and galactose.
Which of the following actions would be most effective in decreasing the amount of carbon dioxide in the atmosphere while increasing the amount of biodiversity in an area?
Planting more trees to absorb more of the carbon dioxide from the atmosphere.
Converting forests into housing developments to increase the amount of carbon dioxide used.
Digging up native prairies so more crops which use more carbon dioxide can be grown.
Sowing beans or other legumes along with corn to decrease carbon dioxide fixation.
Planting more trees, or reforestation, is the most effective action in decreasing the amount of carbon dioxide in the atmosphere while increasing biodiversity. It allows trees to absorb carbon dioxide via photosynthesis and supports ecosystems with high levels of diverse life forms.
Explanation:The action most effective in decreasing the amount of carbon dioxide in the atmosphere while simultaneously increasing the amount of biodiversity in an area would be planting more trees. This process is known as reforestation. Trees naturally absorb carbon dioxide from the atmosphere during photosynthesis, a process by which they convert carbon dioxide and sunlight into oxygen and glucose. Moreover, forests are rich ecosystems that can support a high level of biodiversity, including various species of plants, animals, and microorganisms.
On the other hand, converting forests into housing developments, digging up native prairies, or sowing beans along with corn, although these actions might temporarily sequester some carbon dioxide, they generally lead to the reduction of biodiversity and destruction of ecosystems. Therefore, they are less effective strategies in the long term.
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what is the structure of dna that watch crick and franklin contributed to discover?
A substance that can elicit an immune response from a lymphocyte is called a(n) ______.
In biology, a substance that elicits an immune response from a lymphocyte is known as an antigen. These substances could be on the surfaces of varied cells which the immune system identifies as foreign, thereby eliciting an immune reaction primarily involving lymphocytes like T-cells and B-cells.
Explanation:A substance that can elicit an immune response from a lymphocyte is commonly known as an antigen. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. The immune system recognizes any cell with these substances on its surface as foreign, and it can elicit an immune response.
Ideally, lymphocytes come to play, where T and B cells, components of lymphocytes in our body, react to these antigens. T-cells directly attack the foreign cells while B-cells produce antibodies that target the antigens to neutralize or eliminate them.
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which object in our solar system reflects light and is a satellite that orbits around one planet
Answer:
is B
Explanation:
i did the exam!
Which of the following best describes computer modeling in biology?
a.A computer is used to create a spreadsheet showing the relationship of the algae population in a lake to the nitrate pollution
b.A computer is used to simulate the growth of algae in a lake due to increasing nitrate pollution.
c.A computer is used to calculate a scale of a lake’s turbidity due to algal growth from too much nitrate pollution in the water.
d.A computer is used to store data and create a database of the changing algae populations in a lake due to nitrate pollution.
Answer:
The answer is B
Explanation:
A computer model is mostly used for simulations. In other words, the computer program can generate scenarios showing the response of the organisms under study when we enter variations in the conditions such as temperature, salinity and rainfall or variations in resources, such as prey type or availability of nesting sites or nutrients.
What are examples of monomers and polymers of carbohydrates lipids proteins nucleic acids?