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Anatomy And Physiology Exam Practice Test quiz 29

Anatomy And Physiology Exam Practice Test quiz 29

Anatomy And Physiology Exam Practice Test part_4

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Quiz Questions And Answers

Because of mitosis and cytoplasmic division, the resulting cells contain:

Identical chromosomes
Identical DNA information
Both identical chromosomes and DNA information
None of the above.

The 2 major components of the cell membrane are:

Lipids and carbohydrates
Proteins and carbohydrates
Lipids and proteins
Carbohydrates and polysaccharides

The cell membrane functions to:

Maintain wholeness of the cell
Control the entry and exit of various substances
Provide a barrier to water soluble substances
All of the above

Which of the following is not a factor that influences the rate of diffusion?

The distance of diffusion
The concentration of the substance
The amount of energy available for transport molecules
The molecular weight of the diffusing molecules

What characteristic is shared by simple diffusion and facilitated diffusion?

Both require cellular energy for the transport of substances.
Both involve the movement of water across a semi permeable membrane
Both require a special carrier molecule to move substances across the membrane
Both involve themovement ofa substancefrom regions ofhigher concentration to lower concentration without cellular energ

What occurs if a red blood cell is placed in a hypotonic solution?

The cell will shrink
The cell will swell and may eventually burst
Nothing; the cell will remain the same size and shape
Only permeable substances will leave the cell; otherwise the concentrations within the cell do not change

In what phase of mitosis do the chromosomes duplicate?

Prophase
Interphase
Metaphase
Telophase

Which of the following is isotonic to red blood cells?

0.9% NaCl solution
0.9% glucose solution
Distilled water
None of the above

A selectively permeable membrane is defined as one that:

Allows all substances to pass through
Allows all organic substances to pass through but excludes all inorganic substances
Allows some substances to pass through and excludes others
Is leaky or allows substances to leak through

Which of the following organelles has its structures and function correctly described?

✓Endoplasmic reticulum: network of interconnected membranes forming sacs and canals; packages proteins molecules
Ribosomes: membranous vesicles; contains digestive enzymes
Golgi apparatus: particles composed of protein and RNA; synthesizes proteins
Mitochondrion: nonmembranous structure that synthesizes proteins
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