Answer: The correct answer for the blank is- Non vascular.
Non vascular plants do not possess vascular tissues ( such as xylem and phloem, which are present in vascular plants for the water and mineral transport). Moreover, wide variety of specialized tissues are absent in them.
They are unable to control the rate of loss of water from their tissues. Due to this reason, they are adapted to grow in moist environments so that can absorb water and nutrients by the process of osmosis and diffusion.
Example- Bryophytes ( such as mosses and liverworts), algae.
Before conducting an experiment, a scientist needs to review _____.
A. polls about public opinion
B. details about whether the experiment is important enough
C. trends involving consumers
D. results of other experiments related to the subject
Answer: D. results of other experiments related to the subject.
A literature review is necessary for a researchers to search and read, once before designing the research plan. It helps the researcher to know the process, conclusion, results, advantages and drawbacks of previous research work in the chosen subject. It makes the researcher aware about how his/her research question is appropriate and original. The results of previous studies if correctly matches with the hypothesis can be conclusive and useful for referring for current study if not than relevant precautions can be taken so, that they do not repeat in the current study.
Therefore, before conducting an experiment, a scientist needs to review the results of other experiments related to the subject.
When was the mathematical structure of science discovered?
What happens if homeostasis is disrupted in a living organisms
The definition that offers the broadest range of substances that can be considered acids is the:
The broadest definition of acid was given by G. N. Lewis in 1923. He described that an acid (Lewis acid) is any substance, such as the H+ ion, that can accept a pair of non-bonding electrons. In simple words, the definition of Lewis acid is a substance which accepts an electron-pair.
Answer:
Lewis definition or Lewis acid
Because the majority of cell differentiation occurs during the ____ phase, this is the time when exposure to teratogens can do the most damage.
In 1996, a cloning experiment produced the sheep named dolly. contrary to the more traditional method of cloning by embryo splitting, dolly was produced by which procedure?
The sea breeze effect happens because:
a. there’s nothing to block wind on the open ocean
b. the land heats up faster than the ocean
c. the ocean cools faster than the land
d. when the wind reaches land, it may be blocked by tall buildings or mountains
According to the text, the work of _______ revolutionized our understanding of sexual anatomy and sexual responding.
One function of glial cells is to
Glial cells are essential for the proper function of the nervous system. They guide developing neurons, buffer harmful ions and chemicals, produce myelin sheaths around axons, and protect the nervous system against infections. Various types of glial cells including astrocytes, oligodendrocytes and microglia each play specific roles in these processes.
Explanation:One function of glial cells is to provide support to the nervous system in various ways. These include guiding developing neurons to their destinations, buffering ions and chemicals that could harm neurons, and producing myelin sheaths around axons to enhance communication between neurons. Of note, the different types of glial cells such as astrocytes, oligodendrocytes, and microglia each play a specific role within the central and peripheral nervous system.
Astrocytes, abundant in the central nervous system, contribute to various functions including the regulation of ion concentration in spaces between cells, intake and breakdown of some neurotransmitters, and the formation of the blood-brain barrier which separates the brain from the circulatory system. Oligodendrocyte cells and Schwann cells play significant roles in the production of myelin in the central and peripheral nervous system respectively, enhancing the speed and efficiency of electrical signals along neurons.
While supporting and protecting neurons, microglia also play an important role in safeguarding the nervous system against infections. All these functions underline the fact that glial cells are critical for the proper functioning of the nervous system.
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What is the advantage to a sessile animal to produce free swimming larvae?
A sessile animal to produce free swimming larvae has primarily and radial symmetry. The advantage of this is that the primary and radial symmetry allows for the animals to reach out in all directions from one center such as during feeding. Since they don’t have a high degree of controllable movement even during food collecting periods, they can travel much greater distances than the bottom-dwelling adults, increasing their range. Secondarily, radial symmetric animals are able to receive stimuli from all directions which have efficient defense mechanisms due to their radial symmetric distribution.
Final answer:
Sessile animals like sponges produce free-swimming larvae to spread offspring across new environments, promoting survival and genetic diversity, despite high predation and low survival rates.
Explanation:
The advantage to a sessile animal, such as a sponge, to produce free swimming larvae is that it allows the larvae to disperse into new environments, which increases the likelihood of species survival. Since sessile organisms are fixed in one place, having free-swimming larvae ensures that their offspring can settle in new locations where competition for resources may be lower, and there's a potential for greater access to food. This strategy also contributes to greater genetic diversity within a population, as larvae can travel and potentially mix with different gene pools. External fertilization is common in many aqueous environments, which helps protect the eggs from drying out and permits broadcast spawning, a process where eggs and sperm are released into the water. While this results in a high risk of predation and low survival rates for the eggs, the massive production of eggs increases the chance of fertilization and ensures some will survive to adulthood.
Read the following statements that describe how information flows in the nervous system. What is the correct order in which they occur? 1) Response is carried to glands or muscles. 2) Information is gathered. 3) Information is processed and a response is formed. A. 3,2,1 B. 3,1,2 C. 2,3,1 D. 1,2,3
Answer: C. 2 , 3, 1
Explanation:
The nervous system is a complex network of neurons that carry messages in a body of particular animal.
The flow of information starts from the receptor which is the sense organ . The sensory neurons gathers the signals from the sensory organ and release them through neurons that are interconnected. Then they are received by the relay neuron which is in the spinal cord.Then the spinal cord sends signals back through the motor neuron to the muscle. Thus response is carried to glands or muscles to take away organ from danger.
Hence, the correct order in which they occur :
2) Information is gathered.
3) Information is processed and a response is formed.
1) Response is carried to glands or muscles.
What is the most important property of water for protecting fish in a shallow pond on a hot summer day
Comment on the fact that at present in South Africa it is legal for big game hunters to shoot rhinos as trophies.
Which of the following would present the strongest evidence in a commercial promoting a new pain reliever?
A:Testimony of more than three users endorsing the drug
B:Mention of the magazines that have published details of the drug
C: Introduction by a famous doctor who claims the drug works
D:Details of testing conducted by an unbiased group of scientists
Answer: D: Details of testing conducted by an unbiased group of scientists
Explanation:
People are more likely to listen and beleive a commercial that provides the results of testing that was conducted by scientists that aren't biased, which means they aren't one sided and are trying to prove that what they are trying to sell is authentic.
The option that would present the strongest evidence in a commercial promoting a new pain reliever is the details of testing conducted by an unbiased group of scientists. Thus, the correct option is D.
What is a Pain reliever?A Pain reliever may be defined as a medication that declines or relieve headaches, sore muscles, arthritis, or other aches and pains very effectively.
A commercial promotion involves detailed testing which is significantly conducted by an impartial group of scientists to present the strongest evidence.
Therefore, the correct option for this question is D.
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The was a massive scientific undertaking meant to identify and sequence all of the genes found in a human cell. this is just one example of , the bran
A healthy immune system depends on an adequate supply of proteins that bind to and neutralize harmful invaders. what are these proteins known as?
The proteins that bind to and neutralize harmful invaders in the body are known as antibodies or immunoglobulins. The complement system, consisting of about 20 types of proteins, works alongside these antibodies to destroy pathogens. Neutralization, a process resulting from the action of antibodies, prevents pathogens from infecting cells.
Explanation:The proteins that bind to and neutralize harmful invaders, generally referred to as pathogens, are known as Antibodies or Immunoglobulins (Ig). These proteins are produced by plasma cells, a type of B cells, in response to an antigen, which is a chemical structure on the surface of the pathogens. Antigens bind to T or B lymphocyte antigen receptors, therefore activating B cells and leading to them differentiating into cells producing antibodies.
Another type of proteins that contribute to the immune response are the ones forming the Complement system. Comprising approximately 20 types of proteins, this system functions in harmony with the adaptive immune system to destroy extracellular pathogens. The complement proteins bind to the surfaces of microorganisms and are particularly attracted to pathogens already marked by antibodies.
The process in which antibodies disable pathogens or toxins is known as Neutralization. It prevents them from attaching to cells, therefore inhibiting potential infections. The neutralizing antibodies play a crucial role in the protective effects of vaccines as they help the body develop immunity against diseases.
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Most starch digestion and breakdown of disaccharides occurs in which section of the gi tract?
Final answer:
Most starch digestion and the breakdown of disaccharides occur in the small intestine, involving various enzymes, with monosaccharides absorbed into the bloodstream.
Explanation:
Most starch digestion and the breakdown of disaccharides occurs primarily in the small intestine. Initially, in the mouth, salivary amylase starts the breakdown of starch into maltose and dextrins. The digestion of starch then continues in the small intestine. The pancreatic juices, which contain pancreatic amylase, further break down starch and glycogen into maltose. Enzymes such as maltase, sucrase, and lactase, located in the brush border of the small intestinal wall, cleave these disaccharides into monosaccharides like glucose, fructose, and galactose, which are then absorbed into the bloodstream.
Biological organization extends beyond the organism to include which of the following?
A.populations,communities, and ecosystems
B. DNA,RNA , and protein
C. Cells, tissues, and organs
Answer:
the right answer is (populations, communities, and ecosystems)
Explanation:
The process by which water enters deep into the geosphere is condensation evaporation infiltration transpiration
Tension on the vocal cords is regulated by the
They are made up of twin infolding of mucous membrane that are extended across the larynx from back to front.
What Tension on the vocal cords is regulated?The vocal cords' size has an impact on voice pitch. The recurrent laryngeal branch of the vagus nerve controls the laryngeal folds, which vibrate when speaking or singing and are open when breathing.
Because the vocal folds are linked to the arytenoids and move together with them, the arytenoid cartilages aid in the movement of the vocal folds, allowing tension, relaxation, or approximation of these.
The arytenoids are also linked to several intrinsic laryngeal muscles and ligaments, which can move them.The vocal control system may become uncoordinated during extended periods of muscle stress in the voice box.
Therefore, movement of the arytenoid cartilages and contraction of laryngeal muscles.
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A cell goes through cellular respiration and produces ATP which it then uses to move a molecule across the cell membrane. How does the energy in the original glucose molecule change during this process?
Answer: Cellular respiration is a metabolic process that involves the oxidation of biological fuel (glucose) in presence of inorganic electron acceptor ( oxygen) in order to release large amount of energy in the form of ATP( adenosine triphosphate) that is upto 38 molecules.
CO₂ and H₂O are produced as waste products. The energy from ATP is utilized for various cellular activities.
The energy from glucose is changed to ATP through a series of metabolic reactions that occur in three phases that is glycolysis, kreb cycle, and electron transport chain.
The decline in bone breakdown and increased mineralization causes blood calcium to ____________ back to normal levels.
The professional organization that brought together physicians, physical educators, and physiologists interested in physical activity and health was the
The American College of Sports Medicine is the organization that is being described above as they are focused in the study of sports and are usually composed of the physical educators, coaches, physicians, medical doctors, athletic trainers and physiologist who are all involve and have interest in physical activities.
Explain the connection between the beginning of life and the universal genetic code
The connection between the beginning of life and the universal genetic code is that they all started with a simple one celled molecule. The Universal genetic code is a common language for almost all organisms to translate nucleotide sequence of deoxyribonucleic acid that is DNA and ribonucleic acid that is RNA to amino acid sequences of proteins. All living Organisms have a genetic code generally represented by the sequence of nucleotides in their DNA.
A genetic code shared by many different organisms provides important evidence for the origin of life on Earth.
What is genetic code?The genetic code is composed up of basically a three-letter nucleotide combinations referred to as codons, each and every of which corresponds to a different amino acid or stop signal.
Francis Crick and his colleagues pioneered the concept of codons.
Even when organisms do not use the standard code, the differences are minor, such as a change in the amino acid encoded by a specific codon.
A genetic code shared by a variety of organisms provides crucial evidence for the origin of life on Earth.
To direct the synthesis of proteins from amino acids, all known living systems use nucleic acids and the same three-base codons.
In all cells of all organisms, the mRNA codon UUU, for example, codes for phenyl alanine. As a result, genetic code is universal.
Thus, this is the basic connection between beginning of life and the universal genetic code.
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Cam plants are adapted to live in hot, dry environments because they __________.
CAM plants are adapted to hot, dry environments by utilizing nocturnal CO₂ uptake and storing it as an acid, which allows them to perform photosynthesis during the day without opening their stomata, thus conserving water.
CAM plants are adapted to live in hot, dry environments because they only open their stomata at night to minimize water loss. This process, known as Crassulacean Acid Metabolism or CAM photosynthesis, allows these plants to take in CO₂ at night and store it in the form of acid within the central vacuole. During the daytime, when the stomata are closed to conserve water, the stored CO₂ is released from the acid and utilized in the Calvin cycle to produce sugars.
Some examples of CAM plants include cacti, pineapples, epiphytic bromeliads, sedums, and the "ice plant", all of which are well-suited to survive in environments with high daytime temperatures, intense sunlight, and low soil moisture. Unlike C3 and C4 plants, CAM plants reduce the risk of photorespiration by fixing carbon dioxide at night, which is a key adaptation for survival in arid conditions.
Which carbohydrate can be used by the body as an immediate source of energy? glucose
cellulose
chitin
glycogen
Glucose is an important energy source of the body. It can be rapidly used as a fuel for the energy needs of the body or can be stored as glycogen in the liver and muscle cells.
Further Explanation:
Carbohydrates are macromolecules which are composed of atoms of hydrogen, carbon, and oxygen. The carbohydrates are used as a fuel to perform normal body functions. They are categorized as monosaccharides, oligosaccharides, disaccharides, and polysaccharides.
The monosaccharides are simple sugars namely fructose, galactose, and glucose. These monosaccharides have a similar molecular formula [tex]\textbf{C}_{6}\textbf{H}_{12}\textbf{O}_{6}[/tex] but show different arrangements of atoms in their structural formula. The disaccharides are made when two simple sugars are linked together. For example, glucose and fructose are linked or bonded together to form sucrose. The molecules containing three to six monosaccharide units form the oligosaccharides.
The polysaccharides are complex molecules consisting of monosaccharide units in large numbers. For example, cellulose is a vital structural constituent in plants and is comprised of many glucose units. Starch and glycogen are found respectively in plants and animals as an energy source. They are long-chain branching polymers of glucose. Chitin is also a fibrous component present in the cell walls of fungi. It is a polymer of a glucose derivative which is N-acetylglucosamine.
In order to use energy stored in glycogen, cellulose, and chitin, they have to be broken down into simple molecules or monosaccharides (glucose). This glucose is then utilized during cellular respiration to form ATP (adenosine 5' triphosphate).
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Answer Details:
Grade: High School
Subject: Biochemistry
Chapter: Carbohydrates
Keywords:
Carbohydrates, monosaccharides, oligosaccharides, disaccharides, polysaccharides, glucose, starch, glycogen, chitin, cellulose, ATP, cellular respiration, macromolecules, simple sugars.
Glucose is the immediate source of energy for the body as it is a primary fuel for cellular activities. It is broken down from carbohydrates and transported in the bloodstream. The cells use glucose to produce energy via cellular respiration.
The carbohydrate that can be used by the body as an immediate source of energy is glucose. Glucose is a monosaccharide and is the primary source of fuel for cellular activities in the body. When we consume carbohydrates, they are broken down into glucose, which is then transported through the bloodstream to be used by cells for energy production via a process known as cellular respiration.
The tube leading from the bladder to the outside of the body is the:
What type of earth scientist would most likely study the earth's storms?
By gaining weight slowly and steadily, you add less body fat and more ____________________.
Two fruit flies produce the following generation: 33 flies with recessive vestigial wings (ww) and 87 flies with normal wings (WW or Ww). What can you conclude about the parents of this generation?