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- Question
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
- Correct Answer
- The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
- 1. What compound directly provides energy for cellular work?
Options- A. ATP
- B. ADP
- C. NADP
- D. NADH Discuss
- 2. The functional connection between two neurons is a
Options- A. Axon
- B. Synapse
- C. Neuroglia
- D. Dendrites Discuss
- 3. Most Type 2 diabetics do not produce insulin.
Options- A. TRUE
- B. FALSE Discuss
- 4. The definition of Lysogeny is Discuss
- 5. The oval window is connected directly to which passageway?
Options- A. scala tympani
- B. external auditory meatus
- C. scala vestibuli
- D. pharyngotympanic tube Discuss
- 6. 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
- 7. A molecule of dna is a polymer composed of
Options- A. Amines
- B. Nuceotides
- C. Chromosomes
- D. Fattyacids Discuss
- 8. Which describes the correct pairing of DNA bases?
Options- A. guanine - cytosine
- B. adenine - cytosine
- C. guanine - thymine
- D. thymine - cytosine Discuss
- 9. What is the average Life span of RBC?
Options- A. 120 days
- B. 99 days
- C. 101 days
- D. 111 days Discuss
- 10. The support cells of the nervous system are
Options- A. astrocytes
- B. oligodendrocytes
- C. ependymal cells
- D. All of the above Discuss
Biology problems
Search Results
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: FALSE
Explanation:
In Type 1 diabetes, body do not produce any insulin. In type 2 diabetes, body can produce some insulin.
Hence, the given statement that most type 2 diabetics do not produce insulin is "FALSE."
Correct Answer: The definition of Lysogeny is a dormant viral infection of bacteria in which the genetic material of a virus combines with that of a host bacterium
Correct Answer: scala vestibuli
Explanation:
The oval window is connected directly to scala vestibuli.
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: 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: guanine - cytosine
Explanation:
The correct pairing of DNA bases among the given options is guanine - cytosine.
Correct Answer: 120 days
Explanation:
The average Life span of RBC is 120 days.
Correct Answer: All of the above
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