Le Lesson 2.2
These questions deal with organelles. Look in your notes.
REMEMBER: PERIOD# followed by FIRST & LAST NAME.
- 1.
Which structure is the boundary between a living cell and its environment?
- A.
Cell membrane
- B.
Cytoplasm
- C.
Vacuole
- D.
Ribosome
Correct Answer
A. Cell membraneExplanation
The membrane is the boundary. It controls what goes in & out of a cell and also offers protection from the outside environment.Rate this question:
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- 2.
The cell nucleus functions
- A.
In obtaining energy for the cell
- B.
In the storage of digestive enzymes
- C.
As the center of control for cell metabolism and reproduction
- D.
In the transport of materials throughout the cell
Correct Answer
C. As the center of control for cell metabolism and reproductionExplanation
The nucleus contains DNA, which is necessary for reproduction.Rate this question:
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- 3.
The genetic material of an animal cell is found in the
- A.
Nucleus
- B.
Cytoplasm
- C.
Ribosome
- D.
Vacuole
Correct Answer
A. NucleusExplanation
DNA (genetic material) is found in the nucleus.Rate this question:
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- 4.
Current evidence indicates that ribosomes are most closely associated with
- A.
Contraction of the cytoplasm
- B.
Production of DNA
- C.
Synthesis of protein
- D.
Regulation of mitosis
Correct Answer
C. Synthesis of proteinExplanation
RIBOSOMES make proteins. SYNTHESIS means "to make."Rate this question:
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- 5.
Mitochondria are organelles in which
- A.
Digestive enzymes are stored
- B.
Secretory products are packaged and stored
- C.
The energy needed by the cell is released from nutrients
- D.
Protein manufacture occurs
Correct Answer
C. The energy needed by the cell is released from nutrientsExplanation
The mitochondria release energy from glucose in the form of ATP.Rate this question:
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- 6.
Which cell organelles are most closely associated with energy changes in a plant?
- A.
Mitochondria and chromosomes
- B.
Chloroplasts and mitochondria
- C.
Chromosomes and nucleus
- D.
Chloroplasts and nucleus
Correct Answer
B. Chloroplasts and mitochondriaExplanation
CHLOROPLASTS create glucose using the energy from the sun. MITOCHONDRIA release the energy stored in glucose in the form of ATP.Rate this question:
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- 7.
Which is the most accurate statement concerning protein synthesis in cells?
- A.
Proteins are synthesized at the mitochondria in all living cells.
- B.
Proteins are synthesized at the ribosomes in all living cells.
- C.
Proteins are synthesized at the ribosomes in plant cells only.
- D.
Proteins are synthesized by nuclei in animal cells only.
Correct Answer
B. Proteins are synthesized at the ribosomes in all living cells.Explanation
Proteins are synthesized by the ribosomes. LOOK IN YOUR NOTES!!!Rate this question:
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- 8.
In both plant and animal cells, the cell membrane
- A.
Produces enzymes
- B.
Controls reproduction
- C.
Is composed of sugars
- D.
Regulates diffusion
Correct Answer
D. Regulates diffusionExplanation
The cell membrane controls what goes in and out of a cell. Substances get into and out of a cell membrane through the process of diffusion.Rate this question:
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- 9.
The structures labeled A, B, C, and D in the following diagram represent
- A.
Organelles
- B.
Organs
- C.
Nuclei
- D.
Mitochondria
Correct Answer
A. OrganellesExplanation
A nucleus and mitochondrion is selected, but they all are organelles.Rate this question:
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- 10.
Structure A is most probably a
- A.
Mitochondrion
- B.
Ribosome
- C.
Vacuole
- D.
Nucleus
Correct Answer
C. VacuoleExplanation
Vacuoles are for storage. That substance is being stored inside the cell in a VACUOLE.Rate this question:
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