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Marvin BI 112 Exam 3 Questions and Answers Already Graded A+
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Marvin BI 112 Exam 3 Questions and Answers Already Graded A+ What is the significance of the pH level in enzyme activity? A) It determines the color of the enzyme B) It affects the shape and function of the enzyme C) It influences the speed of cellular respiration D) It has no effect on enz...

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  • October 5, 2024
  • 39
  • 2024/2025
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Marvin BI 112 Exam 3 Questions and
Answers Already Graded A+
What is the significance of the pH level in enzyme activity?

A) It determines the color of the enzyme

B) It affects the shape and function of the enzyme

C) It influences the speed of cellular respiration

D) It has no effect on enzymes


✔✔B) It affects the shape and function of the enzyme




How does temperature influence the rate of photosynthesis?

A) Higher temperatures always increase the rate

B) There is an optimal temperature range for maximum rate

C) Temperature does not affect photosynthesis

D) Lower temperatures always increase the rate


✔✔B) There is an optimal temperature range for maximum rate




Which molecule acts as the primary energy currency of the cell?

A) NADH

1

,B) FADH2

C) ATP

D) Glucose


✔✔C) ATP




What structure is responsible for the selective permeability of the cell membrane?

A) Phospholipid bilayer

B) Cell wall

C) Cytoplasm

D) Nucleus


✔✔A) Phospholipid bilayer




In what part of the cell does glycolysis occur?

A) Nucleus

B) Mitochondria

C) Cytoplasm

D) Endoplasmic reticulum


✔✔C) Cytoplasm


2

,What is the role of the spliceosome during mRNA processing?

A) To add a poly-A tail

B) To remove introns from pre-mRNA

C) To initiate translation

D) To transport mRNA out of the nucleus


✔✔B) To remove introns from pre-mRNA




Which cellular process involves the uptake of large particles through membrane invagination?

A) Exocytosis

B) Phagocytosis

C) Pinocytosis

D) Receptor-mediated endocytosis


✔✔B) Phagocytosis




What is the main function of the sodium-potassium pump in a cell?

A) To synthesize proteins

B) To maintain the resting membrane potential


3

, C) To promote cellular respiration

D) To facilitate photosynthesis


✔✔B) To maintain the resting membrane potential




Which of the following is a characteristic of prokaryotic cells?

A) Membrane-bound organelles

B) Nucleus

C) Circular DNA

D) Complex cytoskeleton


✔✔C) Circular DNA




What is the primary outcome of the Calvin cycle in photosynthesis?

A) Production of glucose

B) Release of oxygen

C) Generation of ATP

D) Splitting of water


✔✔A) Production of glucose




4

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