AP BIOLOGY MIDTERM QUESTIONS
WITH CORRECT ANSWERS
The somatic cells derived from a single-celled zygote divide by witch process? - Correct
Answers -mitosis
One difference between cancer cells and normal cells is that cancer cells ___________.
- Correct Answers -continue to divide even when they are tightly packed together
Chemical signal pathways _______________. - Correct Answers -often involve the
binding of signal molecules to a protein on the surface of a target cell
Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small
intestine, however, rapidly move large quantities of glucose from the glucose-rich food
into their glucose poor cytoplasm. using this information, which transport mechanism is
most probably functioning in the intestinal cells? - Correct Answers -facilitated diffusion
A molecule with the chemical formula C6H12O6 is probably a _____. - Correct Answers
-carbohydrate and monosaccharide only
The difference between pinocytosis and receptor-mediated endocytosis is that
__________. - Correct Answers -pinocytosis is nonselective in the molecules it brings
into the cell, whereas receptor-mediated endocytosis offers more selectivity
Binding of a signaling molecule to which type of receptor leads directly to a change in
distribution of ions on opposite sides of the membrane? - Correct Answers -ligand-gated
ion channel
If there are 20 chromatids in the cell, how many centromeres are there? - Correct
Answers -10
Which bonds are created during the formation of the primary structure of a protein? -
Correct Answers -peptide bonds
Which of the following factors would tend to increase membrane fluidity? - Correct
Answers -a greater proportion of unsaturated phospholipids
Large numbers of ribosomes are present in cells that specialize in producing which of
the following molecules? - Correct Answers –proteins
WITH CORRECT ANSWERS
The somatic cells derived from a single-celled zygote divide by witch process? - Correct
Answers -mitosis
One difference between cancer cells and normal cells is that cancer cells ___________.
- Correct Answers -continue to divide even when they are tightly packed together
Chemical signal pathways _______________. - Correct Answers -often involve the
binding of signal molecules to a protein on the surface of a target cell
Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small
intestine, however, rapidly move large quantities of glucose from the glucose-rich food
into their glucose poor cytoplasm. using this information, which transport mechanism is
most probably functioning in the intestinal cells? - Correct Answers -facilitated diffusion
A molecule with the chemical formula C6H12O6 is probably a _____. - Correct Answers
-carbohydrate and monosaccharide only
The difference between pinocytosis and receptor-mediated endocytosis is that
__________. - Correct Answers -pinocytosis is nonselective in the molecules it brings
into the cell, whereas receptor-mediated endocytosis offers more selectivity
Binding of a signaling molecule to which type of receptor leads directly to a change in
distribution of ions on opposite sides of the membrane? - Correct Answers -ligand-gated
ion channel
If there are 20 chromatids in the cell, how many centromeres are there? - Correct
Answers -10
Which bonds are created during the formation of the primary structure of a protein? -
Correct Answers -peptide bonds
Which of the following factors would tend to increase membrane fluidity? - Correct
Answers -a greater proportion of unsaturated phospholipids
Large numbers of ribosomes are present in cells that specialize in producing which of
the following molecules? - Correct Answers –proteins
