Biology problems
- 1. What compound directly provides energy for cellular work?
Options- A. ATP
- B. ADP
- C. NADP
- D. NADH Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: ATP
Explanation:
ATP - Adinosine Triphosphate is the compound that directly provides energy for cellular work.
- 2. 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 Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
- 3. 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 Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
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.
- 4. A molecule of dna is a polymer composed of
Options- A. Amines
- B. Nuceotides
- C. Chromosomes
- D. Fattyacids Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
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.
- 5. Which describes the correct pairing of DNA bases?
Options- A. guanine - cytosine
- B. adenine - cytosine
- C. guanine - thymine
- D. thymine - cytosine Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: guanine - cytosine
Explanation:
The correct pairing of DNA bases among the given options is guanine - cytosine.
- 6. What is the average Life span of RBC?
Options- A. 120 days
- B. 99 days
- C. 101 days
- D. 111 days Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 120 days
Explanation:
The average Life span of RBC is 120 days.
- 7. The support cells of the nervous system are
Options- A. astrocytes
- B. oligodendrocytes
- C. ependymal cells
- D. All of the above Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: All of the above
- 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 Also asked in: AIEEE, Analyst
Correct Answer: muscle decreases in size and function because of disease or trauma
- 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 Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: counter the loss of biodiversity
- 10. In which body cavities are the lungs located
Options- A. Pelvic cavity
- B. Thoracic cavity
- C. Abdominal cavity
- D. Body cavity Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Thoracic cavity
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