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| 1 | |
The shape of cells in the body vary based on their |
| | A) | maturity |
| | B) | function |
| | C) | location of reproduction |
| | D) | ability to reproduce |
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| 2 | |
The organelles are found in the |
| | A) | cytoplasm of the cell |
| | B) | nucleus of the cell |
| | C) | both cytoplasm and nucleus |
| | D) | neither cytoplasm nor nucleus |
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| 3 | |
Which of the following statements about the cell membrane in the bilayer model is incorrect? |
| | A) | The membrane forms a boundary around the cellular contents. |
| | B) | The membrane allows some substances to enter and leave the cell but not others. |
| | C) | The basic structure of the cell membrane is a lipid-protein bilayer. |
| | D) | The interior of the cell membrane allows water-soluble substances to pass through it. |
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| 4 | |
Glycoproteins on the surface of the cell membrane function in |
| | A) | controlling substances entry and exit from the cell |
| | B) | providing a reservoir of energy for intracellular functions |
| | C) | recognition of self versus non-self |
| | D) | as hormone receptors |
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| 5 | |
Interconnecting flattened sacs and elongated canals that may contain ribosomes are part of |
| | A) | endoplasmic reticulum |
| | B) | Golgi apparatus |
| | C) | Mitochondria |
| | D) | lysosomes |
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| 6 | |
The organelle that plays a central role in the transport of large substances from inside to outside the cell is the |
| | A) | endoplasmic reticulum |
| | B) | Golgi apparatus |
| | C) | Mitochondria |
| | D) | lysosome |
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| 7 | |
Energy released from glucose and other nutrients is made useful to cells by the |
| | A) | endoplasmic reticulum |
| | B) | Golgi apparatus |
| | C) | Mitochondria |
| | D) | lysosome |
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| 8 | |
The "garbage disposals of the cell" are the |
| | A) | endoplasmic reticulum |
| | B) | Golgi apparatus |
| | C) | Mitochondria |
| | D) | lysosomes |
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| 9 | |
The lack of which organelle in the egg may make human cloning impossible? |
| | A) | centrosome |
| | B) | cilium |
| | C) | microtubule |
| | D) | vesicle |
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| 10 | |
Vesicles that have a role in secretion are formed by the |
| | A) | Golgi apparatus |
| | B) | endoplasmic reticulum |
| | C) | both |
| | D) | neither |
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| 11 | |
Thin, threadlike processes within the cytoplasm that function in various kinds of cell movement are |
| | A) | microfilaments and microtubules |
| | B) | cilia and flagella |
| | C) | both |
| | D) | neither |
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| 12 | |
The nucleolus is a small, dense body composed mainly of |
| | A) | RNA and protein |
| | B) | DNA |
| | C) | invaginated cytoplasm |
| | D) | chromatin |
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| 13 | |
Chromatin fibers coil into rod-like structures known as |
| | A) | ribosomes |
| | B) | lysosomes |
| | C) | chromosomes |
| | D) | all of the above |
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| 14 | |
Passive mechanisms that transport materials across the cell membrane include all of the following except |
| | A) | diffusion |
| | B) | filtration |
| | C) | osmosis |
| | D) | endocytosis |
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| 15 | |
The mechanism in which molecules or ions spread randomly from areas of higher concentration to areas of lower concentration is |
| | A) | filtration |
| | B) | osmosis |
| | C) | exocytosis |
| | D) | diffusion |
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| 16 | |
A cell placed in a hypotonic solution tends to |
| | A) | shrink |
| | B) | swell |
| | C) | remain the same |
| | D) | divide |
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| 17 | |
Substances such as which of these can diffuse readily through the cell membrane? |
| | A) | oxygen |
| | B) | carbon dioxide |
| | C) | both |
| | D) | neither |
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| 18 | |
Molecules that are too large to pass through the membrane pores, such as glucose, and are insoluble in lipids enter the cell using |
| | A) | active transport |
| | B) | filtration |
| | C) | endocytosis |
| | D) | facilitated transport |
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| 19 | |
The substance that moves through the cell membrane during osmosis is |
| | A) | glucose |
| | B) | oxygen |
| | C) | sodium |
| | D) | water |
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| 20 | |
Osmosis is a special case of |
| | A) | filtration |
| | B) | diffusion |
| | C) | facilitated transport |
| | D) | pinocytosis |
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| 21 | |
Solutions with a higher osmotic pressure than body fluids are called |
| | A) | isotonic |
| | B) | hypertonic |
| | C) | hypotonic |
| | D) | supersaturated |
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| 22 | |
When fluid is forced through a membrane by hydrostatic or blood pressure, the mechanism is called |
| | A) | filtration |
| | B) | facilitated diffusion |
| | C) | controlled by electrically gated channels |
| | D) | hormone mediated |
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| 23 | |
Processes that require energy to move substances into and out of the cell without crossing through the cell membrane include |
| | A) | endocytosis |
| | B) | pinocytosis |
| | C) | phagocytosis |
| | D) | all of the above |
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| 24 | |
A process that combines endocytosis and exocytosis to transport a particle across a cell is called |
| | A) | Transcytosis |
| | B) | Pinocytosis |
| | C) | Active transport |
| | D) | Facilitated diffusion |
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| 25 | |
The phase of the cell cycle in which cell contents grow and duplicate is |
| | A) | interphase |
| | B) | metaphase |
| | C) | prophase |
| | D) | telophase |
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| 26 | |
Chromosomes first appear during |
| | A) | prophase |
| | B) | metaphase |
| | C) | anaphase |
| | D) | telophase |
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| 27 | |
The phase of mitosis in which chromosomes return to the area of the centrioles is |
| | A) | prophase |
| | B) | metaphase |
| | C) | anaphase |
| | D) | telophase |
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| 28 | |
Which of the following series of events of mitosis is in the correct sequence? |
| | A) | telophase, anaphase, metaphase, prophase |
| | B) | prophase, telophase, metaphase, anaphase |
| | C) | anaphase, prophase, metaphase, telophase |
| | D) | prophase, metaphase, anaphase, telophase |
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| 29 | |
The process by which cells develop different characteristics in structure and function is called |
| | A) | maturation |
| | B) | replication |
| | C) | hybridization |
| | D) | differentiation |
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| 30 | |
Which of the following are characteristic of cancer? |
| | A) | hyperplasia |
| | B) | dedifferentiation |
| | C) | metastasis |
| | D) | all of the above |
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| 31 | |
Human cells are the same as bacterial cells, the only difference is our greater number of cells. |
| | A) | True |
| | B) | False |
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| 32 | |
A defect in an individual's response to infection, because disease-fighting cells do not stay in the injured area, can be due to a problem with cell adhesion. |
| | A) | True |
| | B) | False |
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| 33 | |
All of the structures described in the composite cell can be found in every cell regardless of function. |
| | A) | True |
| | B) | False |
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| 34 | |
The cell membrane is an inert structure that separates one cell from another. |
| | A) | True |
| | B) | False |
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| 35 | |
The cell membrane contains many kinds of proteins, each with a special function. |
| | A) | True |
| | B) | False |
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| 36 | |
Proteins that pass through the cell membrane serve as "channels" that permit entry of specific ions into the cell. |
| | A) | True |
| | B) | False |
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| 37 | |
Nutrients are received, processed, and used in the cytoplasm of the cell. |
| | A) | True |
| | B) | False |
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| 38 | |
Flagella are found on the free surfaces of epithelial cells; cilia are longer, more abundant, and move cells within the body. |
| | A) | True |
| | B) | False |
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| 39 | |
Microtubules are composed of a globular protein, tubulin. |
| | A) | True |
| | B) | False |
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| 40 | |
The cytoplasm is the site of ribosome production. |
| | A) | True |
| | B) | False |
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| 41 | |
The cell membrane is a selective barrier that controls which substances enter and leave the cell. |
| | A) | True |
| | B) | False |
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| 42 | |
Diffusion continues until the concentrations of a molecule or ion are the same on both sides of a membrane. |
| | A) | True |
| | B) | False |
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| 43 | |
Glucose passes easily through the cell membrane by simple diffusion. |
| | A) | True |
| | B) | False |
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| 44 | |
All cells come from lineages of stem cells and progenitor cells. |
| | A) | True |
| | B) | False |
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