Biology

Biology Related

Review Biology related questions and content

What term describes the process of producing the RNA strand from a DNA template?

  • A. Metabolism.
  • B. Transcription.
  • C. Synthesis.
  • D. Replication.
Correct Answer: B

Rationale: The correct answer is B: Transcription. Transcription is the process where RNA is synthesized from a DNA template by RNA polymerase. During transcription, the DNA double helix unwinds, and one strand is used as a template to create a complementary RNA molecule. This process occurs in the cell nucleus and is essential for gene expression.

Choice A, Metabolism, refers to the chemical reactions that occur in living organisms to maintain life and is not directly related to RNA synthesis. Choice C, Synthesis, is a general term that does not specifically describe the process of RNA production from a DNA template. Choice D, Replication, is the process of copying DNA to create an identical DNA molecule, not RNA synthesis. Therefore, the correct term for producing an RNA strand from a DNA template is Transcription.

You may also like to solve these questions

Why is DNA important for metabolic activities of the cell?

  • A. It initiates cellular mitosis.
  • B. It provides cell wall stability.
  • C. It increases glucose absorption.
  • D. It controls the synthesis of enzymes.
Correct Answer: D

Rationale: DNA is crucial for metabolic activities as it contains the genetic information needed for the synthesis of enzymes, which are essential for various metabolic reactions within the cell. Enzymes are biological catalysts that regulate and speed up chemical reactions, allowing the cell to carry out necessary metabolic processes efficiently. Therefore, DNA's role in controlling enzyme synthesis directly impacts the cell's metabolic activities, making option D the correct answer.

Why can animal cells use a contractile ring but plant cells cannot?

  • A. Plant cells can divide using both methods.
  • B. Animal cells divide faster, requiring them to pinch apart.
  • C. Plant cells are too rigid to utilize a contractile ring.
  • D. Plant cells have a cell wall that hinders the formation of a contractile ring.
Correct Answer: D

Rationale: The correct answer is D because plant cells have a cell wall surrounding them, which provides structural support but makes it challenging for them to form a contractile ring during cell division. The cell wall restricts the flexibility needed for the contractile ring to constrict and separate the cells. In contrast, animal cells do not have a cell wall, allowing them to form a contractile ring composed of actin filaments that constrict during cytokinesis, facilitating cell division.

Where is the apical side of an epithelial cell located?

  • A. Is exposed to fluid or air
  • B. Is on the top side of the cell
  • C. Does not allow any substances to pass through
  • D. None of the above
Correct Answer: B

Rationale: The apical side of an epithelial cell refers to the top surface of the cell that is exposed to the external environment, such as fluid or air. This surface is specialized to perform specific functions like absorption, secretion, or protection. The apical side faces the lumen or external environment and is crucial for the cell's interactions with its surroundings. Therefore, the correct answer is that the apical side of an epithelial cell is on the top side of the cell.

Which disease is caused by a bacterium?

  • A. Mumps
  • B. Strep throat
  • C. AIDS (HIV+)
  • D. Common cold
Correct Answer: B

Rationale: Strep throat is caused by the bacterium Streptococcus pyogenes. Unlike mumps, which is a viral infection, AIDS caused by the HIV virus, and the common cold usually caused by rhinoviruses, strep throat is specifically a bacterial infection that can be treated with antibiotics.

Which disease is caused by a bacterium?

  • A. AIDS (HIV).
  • B. Strep throat.
  • C. Mumps.
  • D. Common cold.
Correct Answer: B

Rationale:

Copyright © 2025 Nokea. All rights reserved.