Course

Introductory Biology

Study Pack

Set 6 Cell Structure And Internal Compartments

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Question 1

(Multiple Choice)

Free
The boundary structure that physically defines a cell is the

A)plasma membrane.
B)protein channel.
C)hydrophilic layer.
D)phospholipid side chain.

Answer

Question 2

(Multiple Choice)

Free
Which of the following statements is false?

A)Eukaryotes use RNA as the hereditary genetic material.
B)Eukaryotes can be multicellular.
C)Eukaryotes have a membrane-enclosed nucleus.
D)Eukaryotes have membrane-enclosed organelles.

Answer

Question 3

(Multiple Choice)

Free
Volvox, the multicellular green alga shown below, has flagellated cells on its surface cells but not on interior cells. How might this condition develop? Volvox, the multicellular green alga shown below, has flagellated cells on its surface cells but not on interior cells. How might this condition develop?   A)Interior cells attempt to grow flagella, but the lack of open space suppresses the effort. B)Interior cells discard the genetic instructions for flagella once their interior position is established. C)The commitment of resources for photosynthesis reduces the availability of protein and other biomolecules needed to produce flagella. D)Signals from surface cells or the absence of signals from the environment to the plasma membranes of the interior cells suppresses the growth of flagella.

A)Interior cells attempt to grow flagella, but the lack of open space suppresses the effort.
B)Interior cells discard the genetic instructions for flagella once their interior position is established.
C)The commitment of resources for photosynthesis reduces the availability of protein and other biomolecules needed to produce flagella.
D)Signals from surface cells or the absence of signals from the environment to the plasma membranes of the interior cells suppresses the growth of flagella.

Answer