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Chapter 4: Q.2 (page 124)
If the nucleolus were not able to carry out its
function, what other cellular organelles would be
affected?
The nucleolus is a darkly pigmented region within the nucleus that controls ribosome synthesis.
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In humans, _____ are used to move a cell within its
environment while _____ are used to move the
environment relative to the cell.
a. cilia, pseudopodia
b. flagella; cilia
c. microtubules; flagella
d. microfilaments; microtubules
Which of the following is most likely to have the greatest concentration of smooth endoplasmic reticulum?
a. a cell that secretes enzymes
b. a cell that destroys pathogens
c. a cell that makes steroid hormones
d. a cell that engages in photosynthesis
In your everyday life, you have probably noticed that certain instruments are ideal for certain situations. For example, you would use a spoon rather than a fork to eat soup because a spoon is shaped for scooping, while soup would slip between the tines of a fork. The use of ideal instruments also applies in science. In what situation(s) would the use of a light microscope be ideal, and why?
Prokaryotes depend on ________ to obtain some
materials and to get rid of wastes.
a. ribosomes
b. flagella
c. cell division
d. diffusion
Describe how microfilaments and microtubules are involved in the phagocytosis and destruction of a pathogen by a macrophage.
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