Biology Questions And Answers 2022 Latest
A molecule of water is bonded with another molecule of water by what type of bond?
A. Ionic
B. Covalent
C.
... [Show More] Hydrogen
D. Molecular - Answer- C. Hydrogen
Which organelle in animal cells is most similar in function to the chloroplast in plant
cells?
A. Cell membrane
B. Vacuole
C. Ribosome
D. Mitochondrion - Answer- D. Mitochondrion
20. Which of the following describes carbohydrates?
A. They serve as fuel for the body.
B. They are present in DNA but not in RNA.
C. They are the least abundant biomolecule.
D. They cannot be stored in the body - Answer- A. They serve as fuel for the body.
What mineral is responsible for muscle contractions?
A. Chloride
B. Sodium
C. Calcium
D. Magnesium - Answer- C. Calcium
Of all the molecules that are significant to biology, which of the following are
considered the most important?
A. Carbohydrates, lipids, protein, and nucleic acids
B. Carbohydrates, lipids, protein, and calcium
C. Carbohydrates, lipids, protein, and sulfur
D. Carbohydrates, lipids, protein, and iron - Answer- A. Carbohydrates, lipids,
protein, and nucleic acids
After observing an event, you develop an explanation. This explanation is referred to
as which of the following?
A. Hypothesis
B. Experiment
C. Conclusion
D. Theory - Answer- A. Hypothesis
Lipids are better known as fats, but what are they specifically?
(Select all that apply.)
A. Fatty acids
B. Phospholipids
C. Ketones
D. Steroids - Answer- A. Fatty acids
B. Phospholipids
D. Steroids
What are the two categories of fatty acids?
A. Trans fats and saturated fats
B. Trans fats and unsaturated fats
C. Saturated fats and unsaturated fats
D. Saturated fats and polyunsaturated fats - Answer- C. Saturated fats and
unsaturated fats
Which of the biologic molecules are components of the molecules of inheritance?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic acids - Answer- D. Nucleic acids
What is the sum of all chemical reactions that occur in an organism?
A. Catalysis
B. Metabolism
C. Catabolism
D. Anabolism - Answer- B. Metabolism
Which step in cellular respiration yields the greatest amount of ATP?
A. Glycolysis
B. Krebs cycle
C. Electron transport chain
D. Fermentation - Answer- C. Electron transport chain
What is the fundamental unit of biology?
A. Atom
B. Cell
C. Tissue
D. Organ - Answer- B. Cell
A cell division occurs in a human. The resulting cells contain 23 chromosomes. This
is a description of gametes formed by which process?
A. Mitosis
B. Binary fission
C. Meiosis
D. Cytokinesis - Answer- C. Meiosis
Which of the following terms is used to describe the appearance of the organism?
A. Homozygous
B. Heterozygous
C. Phenotype
D. Genotype - Answer- C. Phenotype
During protein synthesis, what process uses an RNA strand to produce a
complementary strand of DNA?
A. Transcription
B. Translation
C. Transfer synthesis
D. Codon synthesis - Answer- A. Transcription
Proteins are polymers of which of the following?
A. Monosaccharides
B. Amino acids
C. Fatty acids
D. Nucleotides - Answer- B. Amino acids
Which type of cell contains no defined nucleus?
A. Prokaryotic cell
B. Eukaryotic cell
C. Animal cell
D. Protest cell - Answer- A. Prokaryotic cell
Which cell organelle functions to transport materials from the endoplasmic reticulum
throughout the cell?
A. Ribosome
B. Golgi apparatus
C. Lysosome
D. Vacuole - Answer- B. Golgi apparatus
Which component of the cell contributes to the protection, communication, and
passage of substances into and out of the cell?
A. Nucleus
B. Cell membrane
C. Endoplasmic reticulum
D. Cytoplasm - Answer- B. Cell membrane
What are the two catabolic pathways that lead to cellular energy production?
A. Fermentation and internal respiration
B. Fermentation and external respiration
C. Fermentation and cellular respiration
D. Fermentation and anaerobic respiration - Answer- C. Fermentation and cellular
respiration
What is the function of water in photosynthesis?
A. Combine with carbon dioxide
B. Absorb light energy
C. Supply electrons in the light reactions
D. Transport hydrogen ions in the dark reactions - Answer- C. Supply electrons in
the light reactions
Which of the following describes how a bacterium reproduces?
A. Mitosis
B. Meiosis
C. Binary fission
D. Cytokinesis - Answer- C. Binary fission
Regarding mitosis and cytokinesis, one difference between higher plants and
animals is that in plants
A. the spindles contain cellulose microfibrils in addition to microtubules, whereas
animal spindles do not contain microfibrils.
B. sister chromatids are identical, whereas in animals they differ from one another.
C. a cell plate begins to form at telophase, whereas in animals a cleavage furrow is
initiated at that stage.
D. chromosomes become attached to the spindle at prophase, whereas in animals
chromosomes do not become attached until anaphase. - Answer- C. a cell plate
begins to form at telophase, whereas in animals a cleavage furrow is initiated at that
stage.
How does meiosis differ from mitosis?
A. In meiosis, each of the daughter cells contains twice as many chromosomes as
the parent.
B. In meiosis, each of the daughter cells contains half as many chromosomes as the
parent.
C. In meiosis, each of the daughter cells is completely identical to the parent.
D. Meiotic division occurs in all body cells, whereas in mitosis the cells only divide in
the gonads. - Answer- B. In meiosis, each of the daughter cells contains half as
many chromosomes as the parent.
If you wanted to determine the probability of a genotype, which of the following would
you use?
A. Karyotype
B. Electrophoresis
C. Punnett square
D. Genotype map - Answer- C. Punnett square
Which organelle serves as the site of energy production in eukaryotic cells?
A. Mitochondrion
B. Lysosome
C. Ribosome
D. Nucleus - Answer- A. Mitochondrion
What nitrogenous base is found only on the RNA codon?
A. Cytosine
B. Guanine
C. Uracil
D. Thymine - Answer- C. Uracil
If a Punnett square depicts the father's gene for eye color as Bb, this gene is said to
be
A. heterozygous
B. homozygous
C. dominant
D. recessive - Answer- A. heterozygous
What organelle contains most of the cell's genetic information?
A. Endoplasmic reticulum
B. Nucleus
C. Golgi apparatus
D. Ribosome - Answer- B. Nucleus
Each daughter cell produced in meiosis
A. is identical to the parent cell.
B. originates from a single parent cell.
C. contains an exact copy of the parent's DNA.
D. contains half as many chromosomes as the parent. - Answer- D. contains half as
many chromosomes as the parent.
During glycolysis, glucose is converted to __________ to produce ATP.
A. NADH
B. water
C. pyruvate
D. oxygen - Answer- C. pyruvate
Which process takes place in the cell ribosomes?
A. Protein synthesis
B. Glycolysis
C. DNA replication
D. Krebs cycle - Answer- A. Protein synthesis
Which of the following statements is correct regarding the difference between ice
and liquid water?
A. Ice has a higher specific heat than liquid water.
B. Ice is heavier than liquid water.
C. Ice has more kinetic energy than liquid water.
D. Ice takes up more space than liquid water. - Answer- D. Ice takes up more space
than liquid water.
Which process results in the formation of four haploid daughter cells?
A. Meiosis I
B. Meiosis II
C. Binary fission
D. Mitosis - Answer- B. Meiosis II
Photosynthesis occurs in what organelle?
A. Nucleus
B. Chloroplast
C. Ribosome
D. Mitochondrion - Answer- B. Chloroplast
The cell membrane is primarily composed of which macromolecules?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids - Answer- A. Lipids
Which phase of cellular respiration produces two molecules of ATP?
A. Glycolysis
B. Krebs cycle
C. Electron transport chain
D. Oxidative phosphorylation - Answer- A. Glycolysis
Human sperm and egg cells each contain how many chromosomes?
A. 23
B. 46
C. 92
D. 184 - Answer- A. 23
Chromosomes migrate to opposite sides of the cell during which phase of mitosis?
A. Metaphase
B. Prophase
C. Telophase
D. Anaphase - Answer- D. Anaphase
Protein synthesis begins when a copy of an original DNA molecule is produced.
What is this new molecule called?
A. tRNA
B. mRNA
C. Codon
D. Stop codon - Answer- B. mRNA
Which organelle contains enzymes that digest food stored within the cell?
A. Vacuoles
B. Mitochondria
C. Ribosomes
D. Lysosomes - Answer- D. Lysosomes
Within the biologic hierarchic system of organization, which of the following is least
inclusive?
A. Phylum
B. Order
C. Kingdom
D. Species - Answer- D. Species
In the scientific process, which of the following is a statement or explanation of
certain events or happenings?
A. Hypothesis
B. Observation
C. Experiment
D. Conclusion - Answer- A. Hypothesis
What is the name of the "resting" phase of a cell?
A. Interphase
B. Prophase
C. Metaphase
D. Anaphase - Answer- A. Interphase
Which of the following correctly describes the function of the phospholipid
membrane?
A. It forms a permeable membrane that provides unrestricted flow of nonpolar and
large polar molecules in and out of the cell.
B. It forms an impermeable membrane that prevents leakage of cell contents and
keeps proteins from passing into the cell.
C. It forms a semipermeable membrane that protects the cell while allowing certain
molecules to pass in and out of the cell.
D. It forms a selectively permeable membrane that allows very large protein
molecules to pass in and out of the cell. - Answer- C. It forms a semipermeable
membrane that protects the cell while allowing certain molecules to pass in and out
of the cell.
Variations of a gene that determine a person's genotype are called __________.
A. alleles
B. amino acids
C. codons
D. chromosomes - Answer- A. alleles
Which statement is correct regarding prokaryotic and eukaryotic cells?
A. Both types of cells contain membrane-bound organelles.
B. Only prokaryotic cells reproduce through binary fission.
C. Only eukaryotic cells contain DNA.
D. Both types of cells have a defined nucleus. - Answer- B. Only prokaryotic cells
reproduce through binary fission.
What are the levels of organization of the human body from least complex to most
complex?
A. systems < organs < tissues < cells
B. organs < tissues < cells < systems
C. tissues < cells < organs < systems
D. cells < tissues < organs < systems - Answer- D. cells < tissues < organs <
systems
Which biomolecules are composed of long chains of sugars?
A. Proteins
B. Lipids
C. Carbohydrates
D. Nucleic acids - Answer- C. Carbohydrates
If two parents are heterozygous for the same trait, what is the probability that the
dominant trait will be expressed in the offspring?
A. 100%
B. 75%
C. 50%
D. 25% - Answer- B. 75%
What characteristic allows water to resist changes in temperature?
A. Adhesion
B. Cohesion
C. Low specific heat
D. High specific heat - Answer- D. High specific heat
If one parent has the genotype BB, and the other parent has the genotype bb, what
is the probability that the offspring will inherit the dominant trait?
A. 100%
B. 75%
C. 25%
D. 0% - Answer- A. 100%
Why is the phospholipid structure of the cell membrane so important for cell
function?
A. It forms a permeable membrane that provides unrestricted flow of nonpolar as
well as large polar molecules in and out of the cell.
B. It forms an impermeable membrane that prevents leakage of cell contents and
keeps proteins from passing into the cell.
C. It forms a semipermeable membrane that protects the cell while allowing certain
molecules to pass in and out of the cell.
D. It forms a selectively permeable membrane that allows very large protein
molecules to pass in and out of the cell. - Answer- C. It forms a semipermeable
membrane that protects the cell while allowing certain molecules to pass in and out
of the cell.
Most chemical reactions are catalyzed by which type of molecules?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic acids - Answer- C. Proteins
Which term refers to the division of a single cell into two separate daughter cells at
the end of mitosis?
A. Transcription
B. Interphase
C. Binary fission
D. Cytokinesis - Answer- D. Cytokinesis
Which type of energy conversion takes place during photosynthesis?
A. Thermal energy is converted to electrostatic energy.
B. Solar energy is converted into chemical energy.
C. Chemical energy is converted to thermal energy.
D. Electrostatic energy is converted to solar energy. - Answer- B. Solar energy is
converted into chemical energy.
What type of molecular bonding occurs between base pairs on a DNA strand?
A. Ionic
B. Covalent
C. Hydrogen
D. Molecular - Answer- C. Hydrogen
Why is polarity the most important characteristic of water?
A. The results of the polarity are hydrogen bonding, a high specific heat value, and
its versatile solvent properties.
B. The results of the polarity are covalent bonding, a low specific heat value, and its
versatile solvent properties.
C. The results of the polarity are ionic bonding, a high specific heat value, and its
versatile solvent properties.
D. The results of the polarity are hydrogen bonding, a low specific heat value, and its
versatile solvent properties. - Answer- A. The results of the polarity are hydrogen
bonding, a high specific heat value, and its versatile solvent properties.
Athletes are often concerned with the question of what they need in their diets to
increase muscle mass and strength. What biologic molecule would you recommend
that would accomplish this?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids - Answer- B. Proteins
Which organelle would you expect to be present in a cell responsible for detoxifying
multiple molecules?
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Lysosome
D. Golgi apparatus - Answer- B. Smooth endoplasmic reticulum
A cell from heart muscle would more than likely contain an unusually high proportion
of:
A. Lysosomes
B. Mitochondria
C. mRNA
D. Ribosomes - Answer- B. Mitochondria
The sum of all chemical reactions that occur in an organism is:
A. Product
B. Respiration
C. Metabolism
D. Synthesis - Answer- C. Metabolism
A cell that does not contain membrane-bound organelles or a defined nucleus would
be classified as:
A. Eukaryotic
B. Embryonic
C. Prokaryotic
D. Symbiotic - Answer- C. Prokaryotic
The two catabolic pathways that lead to cellular energy production are:
A. Fermentation and protein synthesis
B. Cellular respiration and glycolysis
C. Fermentation and glycolysis
D. Cellular respiration and fermentation - Answer- D. Cellular respiration and
fermentation
Which part of cellular respiration produces the greatest amount of ATP?
A. Electron transport chain
B. Glycolysis
C. Citric acid cycle
D. Fermentation - Answer- A. Electron transport chain
When plants do not receive enough water, their photosynthetic rate drops. This is
because:
A. Water is a raw material for the light reactions in photosynthesis.
B. Carbon dioxide is not available.
C. Water provides the carbon atoms used to make sugar.
D. Not enough oxygen is produced to keep fermentation running - Answer- A. Water
is a raw material for the light reactions in photosynthesis.
How does asexual reproduction differ from sexual reproduction?
A. Asexual reproduction results in all cells being identical to the original cell; sexual
reproduction results in half of the cells being identical to the original cell.
B. Asexual reproduction results in two cells that contribute genetic material to
daughter cells, resulting in significantly greater variation.
C. Sexual reproduction involves two cells that contribute genetic material to daughter
cells, resulting in significantly greater variation.
D. Sexual reproduction involves one cell that yields all cells produced to be identical.
- Answer- C. Sexual reproduction involves two cells that contribute genetic material
to daughter cells, resulting in significantly greater variation.
13. Why is it important for cells to undergo mitosis?
A. Mitosis allows for reproduction with male and female gametes.
B. Mitosis increases variation within the species.
C. Mitosis produces cells that are different from the parent cell.
D. Mitosis produces cells for growth and repair of body tissue. - Answer- D. Mitosis
produces cells for growth and repair of body tissue.
72 Chromosomes undergo meiosis. How many chromosomes will be in each
gamete?
A. 18
B. 36
C. 72
D. 144 - Answer- B. 36
Which of the following shows how information is transformed to make a protein?
A. DNA-RNA-protein
B. Gene-chromosome-protein
C. ATP-amino acid-protein
D. RNA-DNA-protein - Answer- A. DNA-RNA-protein
What is the result of meiosis II?
A. Two secondary sex cells
B. Four haploid daughter cells
C. Two primary sex cells
D. Duplication of primary sex cells - Answer- B. Four haploid daughter cells
Sodium's ground state electron configuration may be represented as 1s22s22p63s.
How many energy levels does sodium have?
A. 1
B. 2
C. 3
D. 6 - Answer- C. 3
1. Which organelle is responsible for protein synthesis?
A. Mitochondrion
B. Vacuole
C. Cell membrane
D. Ribosome - Answer- D. Ribosome
2. Why is yeast used to make bread rise?
A. It engages in photosynthesis, which produces oxygen gas.
B. Carbon dioxide forms while yeast carries out photosynthesis.
C. Yeast carries out fermentation, producing ethanol and carbon dioxide.
D. Yeast breathes in oxygen and produces carbon dioxide through aerobic
respiration. - Answer- C. Yeast carries out fermentation, producing ethanol and
carbon dioxide.
3. How is mitosis different from meiosis?
A. Mitosis is the process by which sex cells are formed.
B. Meiosis creates cells with half the chromosomes of the parent cell.
C. Telophase does not take place in mitosis.
D. Spermatogenesis and oogenesis occur via mitosis. - Answer- B. Meiosis creates
cells with half the chromosomes of the parent cell.
Mitosis creates cells that are exact copies of each other, down to the number of
chromosomes in the cell. Meiosis, which creates sex cells, forms cells with half the
number of chromosomes in the original cell.
4. Which statement is untrue?
A. RNA is single-stranded.
B. RNA contains uracil.
C. DNA codes for proteins.
D. DNA cannot be altered. - Answer- D. DNA cannot be altered.
5. Imagine that two parents both carry the recessive gene for cystic fibrosis. Any
homozygous recessive offspring will manifest the disease. What percentage of the
offspring is predicted to be carriers but not manifest the disease?
A. 0%
B. 25%
C. 50%
D. 100% - Answer- C. 50%
The gene for the disease is recessive, so only homozygous recessive offspring (aa)
manifest the disease. An offspring that carries the recessive gene along with the
dominant A gene (Aa) will carry but not manifest the disease. In a Punnett square,
this would mean two out of four offspring.
6. A cell is in a solution in which the concentration of solutes is higher inside the cell
than outside the cell. What would you expect to happen to the cell?
A. It will swell and possibly burst.
B. It will shrivel and shrink.
C. It will maintain its current size.
D. It will grow a supportive cell wall. - Answer- A. It will swell and possibly burst.
7. What is the purpose of phloem tissue in plant stems?
A. It conducts water up through the stem.
B. It conducts the energy of light to leaves.
C. It conducts food throughout the plant.
D. It conducts carbon dioxide throughout the plant. - Answer- C. It conducts food
throughout the plant.
phloem is the system of narrow tubes that transports sugars and other nutrients.
8. Physical factors such as temperature and pH can alter enzyme activity because
they have an effect on the enzyme's ___________.
A. acidity
B. shape
C. chemistry
D. substrate - Answer- B. shape
The shape of an enzyme controls its fit with its substrate. Changes in temperature
and/or pH can alter an enzyme's shape.
9. Which part of a plant's reproductive system is of a different "gender" than the
others?
A. Stamen
B. Pistil
C. Stigma
D. Style - Answer- A. Stamen - is the male reproductive organ in a flowering plant.
The pistil (choice B) is the female reproductive organ. The stigma (choice C) is the
top part of the pistil, and the style (choice D) is a slender stalk below the stigma.
10. What kind of symbiosis exists between a pneumonia bacterium and a human?
A. Mutualism
B. Parasitism
C. Commensalism
D. Competition - Answer- B. Parasitism
A parasitic relationship is one in which one organism benefits (in this case, the
bacterium) to the detriment of another (in this case, the human).
11. The scientific name for a house cat is Felis catus. This indicates the house cat's
___________ and ___________.
A. kingdom; family
B. order; subspecies
C. phylum; class
D. genus; species - Answer- D. genus; species
12. Beeswax is an example of what kind of molecule?
A. Lipid
B. Carbohydrate
C. Protein
D. Nucleic acid - Answer- A. Lipid
13. What takes place in a lysosome?
A. Ribosomes are made.
B. Food is produced.
C. Water is stored.
D. Food is digested. - Answer- D. Food is digested.
14. Which organism reproduces via binary fission (bacteria)?
A. Mushroom
B. Blue whale
C. Rainbow trout
D. Salmonella - Answer- D. Salmonella
15. In which phase of cell division do the chromosomes replicate?
A. Prophase
B. Interphase
C. Anaphase
D. Telophase - Answer- B. Interphase
During this active phase of a cell's reproductive life, the cell produces nucleic acids
and proteins and doubles its number of chromosomes
16. In a strand of DNA, you would expect to see adenine paired with ___________.
A. cytosine
B. uracil
C. thymine
D. guanine - Answer- C. thymine
17. Hemophilia is a sex-linked trait carried on the X chromosome. In an example of a
male with hemophilia and a female carrier, what ratio of the offspring is predicted to
have the disease?
A. 0 female : 2 male
B. 1 female : 0 male
C. 1 female : 2 male
D. 2 female : 1 male - Answer- B. 1 female : 0 male
picture a Punnett square. Reading the chart clockwise from top left, the cross would
yield one female carrier, one female hemophiliac, one male hemophiliac, and one
normal male who neither carries nor manifests the disease. Only one of the four, a
female XhX, would be a carrier only
18. What is represented by this formula:
A. Glycolysis
B. Cellular respiration
C. Photosynthesis
D. Electronic transport - Answer- C. Photosynthesis
19. Three students measured the mass of a product of combustion. They recorded
measurements of 5.14 g, 5.16 g, and 5.17 g. If the known mass of the product is
5.30 g, how would you describe the students' measurements?
A. Accurate
B. Precise
C. Both accurate and precise
D. Neither accurate nor precise - Answer- B. Precise
The students' measurements were precise, in that they corresponded closely with
each other. However, since the true measurement differed from theirs by at least
0.13 g, the measurements were not terribly accurate.
20. Which statement regarding energy content is true?
A. Decomposers > secondary consumers
B. Primary consumers > producers
C. Producers > secondary consumers
D. Secondary consumers > primary consumers - Answer- C. Producers > secondary
consumers
The greatest energy content is at the base of the energy pyramid, where the
producers of energy congregate:
poducers > primary consumers > secondary consumers > decomposers
21. How should a researcher test the hypothesis that eating chocolate leads to acne
in teenagers?
A. Take 100 teenagers and feed each one a different amount of chocolate daily for
60 days; then test for acne.
B. Take 100 teenagers and feed 50 two bars of chocolate daily for 60 days while the
other 50 eat no chocolate; then test for acne.
C. Take 1 teenager and feed him or her two bars of chocolate for 30 days and no
chocolate for 30 days; then test for acne.
D. Take 100 teenagers and feed them no chocolate for 30 days and two bars of
chocolate apiece for 30 days; then test for acne. - Answer- B. Take 100 teenagers
and feed 50 two bars of chocolate daily for 60 days while the other 50 eat no
chocolate; then test for acne.
22. Which is not a step in the water cycle?
A. Condensation
B. Transpiration
C. Nitrification
D. Absorption - Answer- C. Nitrification (is a step in the nitrogen cycle)
23. Why do we perceive chlorophyll as green?
A. It absorbs yellow and blue light.
B. It primarily absorbs green light.
C. It fails to absorb green light.
D. It primarily absorbs red light. - Answer- C. It fails to absorb green light.
Chlorophyll absorbs red and blue light but reflects green light
24. Why are bacteria and blue-green algae often classified together?
A. Both are gymnosperms.
B. Both are prokaryotes.
C. Both are autotrophs.
D. Both are pathogens. - Answer- B. Both are prokaryotes.
Bacteria and blue-green algae are prokaryotes, organisms whose cells have no true
nucleus
25. Which of these molecules contains glucose?
A. Proteins
B. Lipids
C. Nucleic acids
D. Carbohydrates - Answer- D. Carbohydrates
1. Which organelle is the site of energy production?
A. Mitochondrion
B. Vacuole
C. Cell membrane
D. Ribosome - Answer- A. Mitochondrion
2. What happens to glucose during glycolysis?
A. Its energy is entirely lost.
B. It splits into molecules of pyruvic acid.
C. It is stored in NADH.
D. It joins with molecules of citric acid. - Answer- B. It splits into molecules of pyruvic
acid.
3. What process do cells in the tip of a plant's root undergo to increase in number?
A. Meiosis
B. Cytokinesis
C. Fractioning
D. Mitosis - Answer- D. Mitosis
Mitosis is cell division that produces new cells with the same number of
chromosomes as the original cell.
Meiosis (choice A) is the type of cell division that produces cells with half of the
organism's normal chromosome number
4. How do RNA and DNA derive their names?
A. From the sugar each contains
B. From the structure of their nucleotides
C. From the information they transfer
D. From their formative processes - Answer- A. From the sugar each contains
RNA is ribonucleic acid; its sugar is ribose. DNA is deoxyribonucleic acid; its sugar is
deoxyribose
5. Huntington's disease is carried on the dominant allele. In a situation where two
heterozygous parents have the disease, what percentage of their offspring are
predicted to be disease-free?... [Show Less]