MCDB midterm 2 practice exam
questions and answers
1. The one type of cell always lacking a cell wall is the_____ cell.
A) bacterial B) plant C) animal D) fungal E) prokaryotic - Correct Answers -C - animal
An organelle consisting of a series of flattened sacks stacked somewhat like pancakes
is the A) mitochondrion. B) chloroplast. C) Golgi apparatus. D) rough endoplasmic
reticulum. E) lysosome. - Correct Answers -C - golgi apparatus
3. Which of the following is not a characteristic of prokaryotic cells? A) A plasma
membrane. B) A nuclear envelope. C) A nucleoid. D) Ribosomes. E) Enzymes - Correct
Answers -B - nuclear envelope
4. An animal cell has a ___ while a plant cell has ___. A) nucleus; no nucleus B)
cytoskeleton; motile flagella C) rough endoplasmic endoderm (ER); only a smooth ER
D) mitochondria; no mitochondria since it only has chloroplasts E) plasma membrane; a
plasma membrane and a cell wall. - Correct Answers -E - animal cells have plasma
membranes, plant cells have plasma membranes and cell wall
20. When O2 is available, after glycolysis takes place the three pathways of cellular
respiration take place. In what order do these three pathways occur? A) Citric acid
cycle, then pyruvate oxidation, then respiratory chain. B) Pyruvate oxidation, then citric
acid cycle, then respiratory chain. C) Pyruvate oxidation, then respiratory chain, then
citric acid cycle. D) Respiratory chain, then citric acid cycle, then pyruvate oxidation. E)
Respiratory chain, then pyruvate oxidation, then citric acid cycle. - Correct Answers -B)
Pyruvate oxidation, then citric acid cycle, then respiratory chain.
21. The citric acid cycle produces all of the following EXCEPT: A)Reduced electron
carriers (NADH and FADH2). B) CO2. C) ATP. D) Pyruvate. E) Oxaloacetate (to react
with a new Acetyl CoA). - Correct Answers -D) Pyruvate
22. In the respiratory chain, the ultimate purpose of the creation of a protonmotive force
(a proton gradient) across the mitochondria membrane is A) to create NADH and FAD
B) to create ATP. C) to create O2. D) to create H2O. E) to reduce the integral electron
carrier proteins. - Correct Answers -B) to create ATP
questions and answers
1. The one type of cell always lacking a cell wall is the_____ cell.
A) bacterial B) plant C) animal D) fungal E) prokaryotic - Correct Answers -C - animal
An organelle consisting of a series of flattened sacks stacked somewhat like pancakes
is the A) mitochondrion. B) chloroplast. C) Golgi apparatus. D) rough endoplasmic
reticulum. E) lysosome. - Correct Answers -C - golgi apparatus
3. Which of the following is not a characteristic of prokaryotic cells? A) A plasma
membrane. B) A nuclear envelope. C) A nucleoid. D) Ribosomes. E) Enzymes - Correct
Answers -B - nuclear envelope
4. An animal cell has a ___ while a plant cell has ___. A) nucleus; no nucleus B)
cytoskeleton; motile flagella C) rough endoplasmic endoderm (ER); only a smooth ER
D) mitochondria; no mitochondria since it only has chloroplasts E) plasma membrane; a
plasma membrane and a cell wall. - Correct Answers -E - animal cells have plasma
membranes, plant cells have plasma membranes and cell wall
20. When O2 is available, after glycolysis takes place the three pathways of cellular
respiration take place. In what order do these three pathways occur? A) Citric acid
cycle, then pyruvate oxidation, then respiratory chain. B) Pyruvate oxidation, then citric
acid cycle, then respiratory chain. C) Pyruvate oxidation, then respiratory chain, then
citric acid cycle. D) Respiratory chain, then citric acid cycle, then pyruvate oxidation. E)
Respiratory chain, then pyruvate oxidation, then citric acid cycle. - Correct Answers -B)
Pyruvate oxidation, then citric acid cycle, then respiratory chain.
21. The citric acid cycle produces all of the following EXCEPT: A)Reduced electron
carriers (NADH and FADH2). B) CO2. C) ATP. D) Pyruvate. E) Oxaloacetate (to react
with a new Acetyl CoA). - Correct Answers -D) Pyruvate
22. In the respiratory chain, the ultimate purpose of the creation of a protonmotive force
(a proton gradient) across the mitochondria membrane is A) to create NADH and FAD
B) to create ATP. C) to create O2. D) to create H2O. E) to reduce the integral electron
carrier proteins. - Correct Answers -B) to create ATP
