Nearly every eukaryotic cell
A) has its genetic material concentrated in a membrane-enclosed nucleus.
B) has a cell wall composed of cellulose that serves as the outer boundary of the cell.
C) contains a hard, noncompressible fluid called the cytosol.
D) possesses flagella and cilia, unlike prokaryotes.
E) contains all of its genetic material in mitochondria.
A
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During the citric acid cycle:
A. fuel molecules are completely reduced. B. ATP is synthesized by substrate level phosphorylation. C. high-energy electrons are removed from NAD+ and FADH. D. ATP is synthesized by oxidative phosphorylation.
The structure in Figure 25-1 labeled C is:
a. a ribosome.
b. the plasma membrane.
c. the capsule.
d. the cell wall.
e. the flagellum.
Pepsinogen catalyzes the hydrolysis of proteins to short polypeptides
____________________ Indicate whether the statement is true or false.
You have a cube of modeling clay in your hands. Which of the following changes to the shape of this cube of clay will decrease its surface area relative to its volume?
A) Pinch the edges of the cube into small folds. B) Flatten the cube into a pancake shape. C) Round the clay up into a sphere. D) Stretch the cube into a long, shoebox shape.