When activated, lysosomes function in
A) formation of new cell membranes.
B) synthesis of proteins.
C) digestion of materials.
D) synthesis of lipids.
E) cell division.
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Question 2) The ________ typically consists of five or six flattened membranous discs called cisternae.
A) centrioles
B) rough endoplasmic reticulum
C) Golgi apparatus
D) smooth endoplasmic reticulum
E) mitochondria
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Question 3) The following is a list of the steps involved in the process of secretion by the Golgi apparatus. What is the proper order for these steps? 1. Cisternae move from the forming face toward the maturing face. 2. Exocytosis 3. Products from RER are packaged into transport vesicles. 4. Secretory vesicles are formed at the maturing face. 5. Vesicles arrive at the forming face. 6. Enzymes modify arriving proteins and glycoproteins.
A) 5, 6, 1, 4, 2, 3
B) 2, 3, 5, 6, 1, 4
C) 4, 3, 1, 6, 5, 2
D) 3, 5, 6, 1, 4, 2
E) 1, 3, 6, 4, 2, 5
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Question 4) Which of the following statements about the Golgi apparatus is false?
A) It receives transport vesicles from the RER.
B) It sends transport vesicles to the RER.
C) It produces lysosomes.
D) It supplies new membrane components.
E) It produces secretory vesicles.
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Question 5) Examination of a sample of glandular cells reveals an extensive network of smooth endoplasmic reticulum. Which of the following is the likeliest product of these cells?
A) digestive enzymes
B) steroid hormones
C) protein hormones
D) transport proteins
E) antibodies
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Question 6) Each of the following is a function of smooth endoplasmic reticulum except
A) storage and release of calcium ions.
B) synthesis of protein.
C) synthesis of steroid hormones.
D) synthesis of triglycerides.
E) detoxification of drugs.
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Question 7) The endoplasmic reticulum is responsible for all of the following except
A) drug and toxin neutralization.
B) lipid synthesis.
C) modification of new proteins.
D) passing molecules to the Golgi apparatus.
E) housing the chromosomes.
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Question 8) Which form of endoplasmic reticulum modifies and packages newly synthesized proteins?
A) all forms of endoplasmic reticulum
B) simple endoplasmic reticulum
C) raised endoplasmic reticulum
D) smooth endoplasmic reticulum
E) rough endoplasmic reticulum
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Question 9) Which of the following consists of a network of intracellular membranes with attached ribosomes?
A) rough endoplasmic reticulum
B) smooth endoplasmic reticulum
C) mitochondria
D) nucleoli
E) Golgi apparatus
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Question 10) Synthesis of lipids and glycogen takes place at the
A) ribosomes.
B) rough ER.
C) smooth ER.
D) Golgi apparatus.
E) mitochondria.
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