Biology

Biology Related

Review Biology related questions and content

What type of cells are without a true nucleus?

  • A. Complex.
  • B. Eukaryotic.
  • C. Prokaryotic.
  • D. Simple.
Correct Answer: C

Rationale: The correct answer is C: Prokaryotic. Prokaryotic cells lack a true nucleus and their genetic material is not enclosed within a membrane-bound nucleus. This is a defining characteristic of prokaryotic cells, distinguishing them from eukaryotic cells (choice B), which have a true nucleus. Complex cells (choice A) and simple cells (choice D) are vague terms that do not specifically address the presence or absence of a true nucleus. Prokaryotic cells, such as bacteria, have a simpler internal structure compared to eukaryotic cells, making them distinct in terms of genetic organization and cellular complexity.

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Which type of cells possess a cell membrane?

  • A. Prokaryotic cells only
  • B. Eukaryotic cells only
  • C. Both prokaryotic and eukaryotic cells
  • D. None of the above
Correct Answer: C

Rationale: The cell membrane is a fundamental structure found in all cells, serving as a protective barrier and regulating the passage of substances in and out of the cell. Therefore, both prokaryotic and eukaryotic cells have a cell membrane. This makes option C the correct choice.

Which of the following statements is false regarding cell structures?

  • A. Animal cells use lysosomes to break down old cells
  • B. Animal cells use chloroplasts to gain energy
  • C. Plant cells have a cell wall to maintain structure
  • D. All of the above are true
Correct Answer: B

Rationale: The statement in option B is false because animal cells do not use chloroplasts to gain energy. Chloroplasts are found in plant cells and are responsible for photosynthesis, a process where plants convert light energy into chemical energy. Animal cells rely on mitochondria to produce energy through cellular respiration. Options A and C are true statements as lysosomes are responsible for breaking down old cells in animal cells, and plant cells have a cell wall to provide structural support.

What are the three types of muscle tissue?

  • A. Cardiac, spinal, stomach
  • B. Smooth, skeletal, cardiac
  • C. Neuron, epithelial, collagen
  • D. None of the above
Correct Answer: B

Rationale: The correct answer is B: Smooth, skeletal, cardiac. Muscle tissue in the body is classified into three main types: smooth muscle (found in hollow organs like the digestive tract), skeletal muscle (attached to bones, responsible for voluntary movement), and cardiac muscle (specific to the heart, responsible for its rhythmic contractions). Therefore, option B is the correct answer as it lists the three types of muscle tissue.

A scientist needs 12 mL of a solution. They have a bottle with 0.12 L in it. Do they have enough?

  • A. Yes, they have exactly what they need
  • B. Yes, they have more than what they need
  • C. No, they do not have enough
  • D. None of the above
Correct Answer: B

Rationale: To convert 0.12 L to mL, you multiply by 1000 (since 1 L = 1000 mL). Therefore, 0.12 L = 120 mL. Since the scientist needs only 12 mL, the bottle contains more than enough solution, making choice B the correct answer.

What does the mitochondrion produce that causes it to often be called the powerhouse of the cell?

  • A. ATP
  • B. Enzymes.
  • C. Proteins.
  • D. DNA.
Correct Answer: A

Rationale:

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