CELLULAR AND MOLECULAR BIOLOGY FINAL EXAM
NEWEST 2024 ACTUAL EXAM 180 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) |ALREADY GRADED A+
Which of the following statements is FALSE about protein structure
A. both the alpha-helix and the beta-sheet secondary structures are formed by hydrogen bonds
B. the tertiary structure is referred to as the final functional form of a protein
C. disulfide bond is a strong intra-molecular covalent bond formed between cysteines
D. a protein usually can form into several interchangeable 3D structures while maintaining the same
function - answer-D
When a protein is denatured,
A. the peptide bonds are disrupted and amino acids are separated
B. it loses its 3D structure
C. it forms a complex with other protein
D. it becomes a new protein with a different function - answer-B
A mature functional hemoglobin complex is formed by two alpha and two beta subunit proteins. Which
of the following is TRUE
A. the mature hemoglobin complex is called a hetero-tetramer
B. the mature hemoglobin complex exhibits the tertiary level of protein structure
C. each of the alpha and beta hemoglobin subunit proteins is also called a motif
D. the folding of the beta subunit protein requires the binding of the alpha subunit protein - answer-A
Transporter proteins are typically located
A. in the cytoplasm
B. on the cytoplasmic membrane
C. outside the cell
,D. in the blood stream - answer-B
differential centrifugation is a common method to fractionate cell homogenate. Which cell component is
usually brought down to a pellet by VERY HIGH SPEED centrifugation
A. nucleus
B. mitochondrion
C. small vesicle
D. ribosome - answer-D
Which of the following is true about the goblet cells in the intestine?
A. they perform the absorption function for the intestine
B. the mature goblet cells contain no nucleus
C. they are characteristic with large vesicles
D. They contain special organelles for nutrient storage - answer-C
In the cell diversity lab, the unique biconcave shape of mature red blood cells is due to
A. absence of nucleus
B. multilobed nucleus
C. large vesicles
D. binding of oxygen - answer-D
Hematoxylin and eosin (H&E) staining is a common histological method that stains the nuclei in
_________ and the cytoplasm in _____
A. red; purple
B. purple; pink
C. red; green
D. green; pink - answer-B
, To measure the size of a cheek cell, you prepare a slide of stained cheek cells and examine them under a
compound scope at 400x magnification. Two cheek cells are aligned with the ruler (2.5 mm/bar) shown
on the right. What is the diameter of the lower cell
A. 10 mm
B. 30 mm
C. 60 mm
D. 100 mm - answer-c
To pipet 230 mL solution, you should use the __________ micropipetter and turn the setting knob to set
the tree digits at: A. p200; 0-2-3
B. p200; 2-3-0
C. p1000; 0-2-3
D. p1000; 2-3-0 - answer-c
a photo spectrometer allows you to
A. measure the amount of color substance in a solution
B. measure the volume of a solution
C. pipet microliters of a solution
D. resolve the structure of a protein - answer-A
When the letter 'p' is put under a compound microscope, what will it look like in the eye piece?
A. b
B. d
C. p
D. q - answer-b
Which of the following is FALSE about dissecting microscopes?
A. it provides a large working space for dissection work
B. it provides up to 100x magnification for detail observation
NEWEST 2024 ACTUAL EXAM 180 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) |ALREADY GRADED A+
Which of the following statements is FALSE about protein structure
A. both the alpha-helix and the beta-sheet secondary structures are formed by hydrogen bonds
B. the tertiary structure is referred to as the final functional form of a protein
C. disulfide bond is a strong intra-molecular covalent bond formed between cysteines
D. a protein usually can form into several interchangeable 3D structures while maintaining the same
function - answer-D
When a protein is denatured,
A. the peptide bonds are disrupted and amino acids are separated
B. it loses its 3D structure
C. it forms a complex with other protein
D. it becomes a new protein with a different function - answer-B
A mature functional hemoglobin complex is formed by two alpha and two beta subunit proteins. Which
of the following is TRUE
A. the mature hemoglobin complex is called a hetero-tetramer
B. the mature hemoglobin complex exhibits the tertiary level of protein structure
C. each of the alpha and beta hemoglobin subunit proteins is also called a motif
D. the folding of the beta subunit protein requires the binding of the alpha subunit protein - answer-A
Transporter proteins are typically located
A. in the cytoplasm
B. on the cytoplasmic membrane
C. outside the cell
,D. in the blood stream - answer-B
differential centrifugation is a common method to fractionate cell homogenate. Which cell component is
usually brought down to a pellet by VERY HIGH SPEED centrifugation
A. nucleus
B. mitochondrion
C. small vesicle
D. ribosome - answer-D
Which of the following is true about the goblet cells in the intestine?
A. they perform the absorption function for the intestine
B. the mature goblet cells contain no nucleus
C. they are characteristic with large vesicles
D. They contain special organelles for nutrient storage - answer-C
In the cell diversity lab, the unique biconcave shape of mature red blood cells is due to
A. absence of nucleus
B. multilobed nucleus
C. large vesicles
D. binding of oxygen - answer-D
Hematoxylin and eosin (H&E) staining is a common histological method that stains the nuclei in
_________ and the cytoplasm in _____
A. red; purple
B. purple; pink
C. red; green
D. green; pink - answer-B
, To measure the size of a cheek cell, you prepare a slide of stained cheek cells and examine them under a
compound scope at 400x magnification. Two cheek cells are aligned with the ruler (2.5 mm/bar) shown
on the right. What is the diameter of the lower cell
A. 10 mm
B. 30 mm
C. 60 mm
D. 100 mm - answer-c
To pipet 230 mL solution, you should use the __________ micropipetter and turn the setting knob to set
the tree digits at: A. p200; 0-2-3
B. p200; 2-3-0
C. p1000; 0-2-3
D. p1000; 2-3-0 - answer-c
a photo spectrometer allows you to
A. measure the amount of color substance in a solution
B. measure the volume of a solution
C. pipet microliters of a solution
D. resolve the structure of a protein - answer-A
When the letter 'p' is put under a compound microscope, what will it look like in the eye piece?
A. b
B. d
C. p
D. q - answer-b
Which of the following is FALSE about dissecting microscopes?
A. it provides a large working space for dissection work
B. it provides up to 100x magnification for detail observation
