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- Question
Which describes the correct pairing of DNA bases?
Options- A. guanine - cytosine
- B. adenine - cytosine
- C. guanine - thymine
- D. thymine - cytosine
- Correct Answer
- guanine - cytosine
ExplanationThe correct pairing of DNA bases among the given options is guanine - cytosine.
- 1. A molecule of dna is a polymer composed of
Options- A. Amines
- B. Nuceotides
- C. Chromosomes
- D. Fattyacids Discuss
- 2. What is the function of chloroplast in a plant cell?
Options- A. absorb nutrients from soil
- B. absorb water
- C. absorb sunlight
- D. All of the above Discuss
- 3. Which statement correctly describes the role of chance in evolution?
Options- A. An allele that increases evolutionary fitness cannot be lost from a population by chance events.
- B. The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
- C. Evolutionary change proceeds by an accumulation of changes that occur by chance.
- D. None of the above Discuss
- 4. What compound directly provides energy for cellular work?
Options- A. ATP
- B. ADP
- C. NADP
- D. NADH Discuss
- 5. The functional connection between two neurons is a
Options- A. Axon
- B. Synapse
- C. Neuroglia
- D. Dendrites Discuss
- 6. What is the average Life span of RBC?
Options- A. 120 days
- B. 99 days
- C. 101 days
- D. 111 days Discuss
- 7. The support cells of the nervous system are
Options- A. astrocytes
- B. oligodendrocytes
- C. ependymal cells
- D. All of the above Discuss
- 8. Atrophy is a condition that occurs when
Options- A. muscle decreases in size and function because of disease or trauma
- B. carbon dioxide, lactic acid, and other wastes accumulate in the muscle
- C. increased use of skeletal muscle causes an increase in its strength
- D. the tendons that attach muscle to bone become stretched or injured Discuss
- 9. The primary goal of conservation biology is to
Options- A. counter the loss of biodiversity
- B. estimate the total number of species that exist
- C. integrate human culture back into nature
- D. catalogue species Discuss
- 10. In which body cavities are the lungs located
Options- A. Pelvic cavity
- B. Thoracic cavity
- C. Abdominal cavity
- D. Body cavity Discuss
Biology problems
Search Results
Correct Answer: Nuceotides
Explanation:
A molecule of DNA is a polymer composed of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group.
Correct Answer: absorb sunlight
Explanation:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.
Correct Answer: The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
Correct Answer: ATP
Explanation:
ATP - Adinosine Triphosphate is the compound that directly provides energy for cellular work.
Correct Answer: Synapse
Explanation:
The functional connection between two neurons is a Synapse.
Correct Answer: 120 days
Explanation:
The average Life span of RBC is 120 days.
Correct Answer: All of the above
Correct Answer: muscle decreases in size and function because of disease or trauma
Correct Answer: counter the loss of biodiversity
Correct Answer: Thoracic cavity
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