Cell Regents Questions

Which term would best represent X?

• human

• tissue

• stomach

• organelle

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Homeostasis in unicellular organisms depends on the proper functioning of

• organelles

• insulin

• guard cells

• antibodies

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Which organelle is correctly paired with its specific function?

• cell membrane-storage of hereditary information

• chloroplast- transport of materials

• ribosome- synthesis of proteins

• vacuole- production of ATP

Muscle cells of athletes often have more mitochondria than the muscle cells of nonathletes. Based on this observation, it can be inferred that the muscle cells of athletes

• have a smaller demand for cell proteins than the muscle cells of nonathletes

• reproduce less frequently than the muscle cells of nonathletes

• have nuclei containing more DNA than nuclei in the muscle cells of nonathletes

• have a greater demand for energy than the muscle cells of nonathletes

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In a cell, information that controls the production of proteins must pass from the nucleus to the

• cell membrane

• chloroplasts

• mitochondria

• ribosomes

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Studies of fat cells and thyroid cells show that fat cells have fewer mitochondria than thyroid cells. A biologist would most likely infer that fat tissue

• does not require energy

• requires less energy than thyroid tissue

• has energy requirements equal to those of thyroid tissue

• requires more energy than thyroid tissue

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Which cell organelle is most directly involved with the bonding of amino acids?

• mitochondrion

• endoplasmic reticulum

• cell wall

• ribosome

One difference between plant and animal cells is that animal cells DO NOT have

• a nucleus

• chloroplasts

• a cell membrane

• centrioles

A structure that performs a specialized function within a cell is known as

• a tissue

• an organelle

• an organ

• a system

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The diagram represents two single-celled organisms. These organisms carry out the activities needed to maintain homeostasis by using specialized internal

• tissues

• organelles

• systems

• organs

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