Chapter 3: The Cellular Level of Organization Quiz

56) The control center for cellular operations is the A) nucleus. B) mitochondria. C) Golgi apparatus. D) endoplasmic reticulum. E) ribosome.

A) nucleus.

47) Which structure organizes the mitotic spindle during cell division? (use SC) A) 1 B) 2 C) 3 D) 5 E) 6

B) 2

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.

B) It sends transport vesicles to the RER.

The watery component of the cytoplasm is called A) cytosol. B) protoplasm. C) extracellular fluid. D) interstitial fluid. E) a colloidal gel.

A) cytosol

Which of the following descriptors regarding cytoplasm is false? A) extracellular fluid contains more protein B) the material that fills a cell C) variable consistency D) includes cytoskeleton E) includes cytosol

A) extracellular fluid contains more protein

Each of the following is an example of a nonmembranous organelle *except* A) lysosomes. B) cilia. C) centrioles. D) ribosomes. E) cytoskeleton.

A) lysosomes

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

A) rough endoplasmic reticulum

The plasma membrane is composed of A) a bilayer of proteins. B) a bilayer of phospholipids. C) carbohydrate molecules. D) carbohydrates and proteins. E) carbohydrates and lipids.

B) a bilayer of phospholipids.

42) Each of the following is a function of smooth endoplasmic reticulum except A) storage and release of calcium ions. B) modification of protein. C) synthesis of steroid hormones. D) synthesis of triglycerides. E) detoxification of drugs.

B) modification of protein.

39) Which organelle is most prominent in cells that make large amounts of protein? A) nucleus B) nucleolus C) chromosome D) proteasome E) mitochondria

B) nucleolus

The smallest living unit within the human body is A) a protein. B) the cell. C) a tissue. D) an organ. E) an organ system.

B) the cell

Match the organelle (1-4) with the correct description (5-8). 1. mitochondrion 2. centriole 4. endoplasmic reticulum 4. cytosol 5. intracellular transport 6. liquid in cell 7. provides cell energy 8. aids the formation of the spindle apparatus A) 1 and 7, 2 and 6, 3 and 8, 4 and 5 B) 1 and 8, 2 and 5, 3 and 6, 4 and 7 C) 1 and 7, 2 and 8, 3 and 5, 4 and 6 D) 1 and 5, 2 and 6, 3 and 7, 4 and 8 E) 1 and 6, 2 and 8, 3 and 5, 4 and 7

C) 1 and 7, 2 and 8, 3 and 5, 4 and 6

49) Which structure produces ATP for the cell? (use SC) A) 1 B) 2 C) 3 D) 5 E) 6

C) 3

50) Which organelle renews the cell membrane and modifies and packages proteins for secretion? (use SC) A) 4 B) 5 C) 6 D) 7 E) 8

C) 6

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.

C) digestion of materials.

The tails of a phospholipid molecule are A) hydrophilic. B) composed of amino acids. C) hydrophobic. D) facing the cytosol. E) interlocked to provide membrane strength

C) hydrophobic.

51) The structure labeled "1" permits the cell to (use SC) A) attach to neighboring cells. B) produce more cells. C) increase surface area for increased absorption. D) swim in extracellular fluid. E) trap bacteria.

C) increase surface area for increased absorption.

Components of the cytoskeleton may include all of the following except A) microfilaments. B) intermediate filaments. C) microsomes. D) microtubules. E) thick filaments.

C) microsomes.

43) 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. Material moves from cisterna to cisterna by means of transfer vesicles. 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

D) 3, 5, 6, 1, 4, 2

48) Synthesis of carbohydrates and lipids occurs in the structure labeled (use SC) A) 4. B) 5. C) 6. D) 7. E) 8.

D) 7.

41) Which of the following statements concerning mitochondria is false? A) The cristae increase the inner surface area of the organelle. B) The matrix contains metabolic enzymes involved in ATP synthesis. C) Respiratory enzymes are attached to the surface of the cristae. D) The mitochondria require carbon dioxide and produce oxygen in the process of energy transformation. E) The mitochondria produce most of a cell's ATP.

D) The mitochondria require carbon dioxide and produce oxygen in the process of energy transformation.

Which of following properties of the cytoskeleton is incorrect? A) supports organelles B) controls cell shape C) provides cell strength D) made of cytobones E) moves organelles

D) made of cytobones

Most of the ATP required to power cellular operations is produced in the A) cytoplasm. B) endoplasmic reticulum. C) nucleus. D) mitochondria. E) cilia.

D) mitochondria.

Most of a cell's DNA is located in its A) ribosomes. B) lysosomes. C) Golgi apparatus. D) nucleus. E) nucleolus.

D) nucleus.

Functions of the plasma membrane include all of the following except A) separation of the cytoplasm from the extracellular fluid. B) regulation of exchange of materials with the extracellular environment. C) sensitivity to chemical changes in the extracellular fluid. D) thermal insulation. E) structural support.

D) thermal insulation

40) If an animal cell lacked centrioles, it would not be able to A) move. B) synthesize proteins. C) produce DNA. D) metabolize sugars. E) form the mitotic spindle.

E) form the mitotic spindle.

In the mitochondrion, folds are to cristae as the contained fluid is to A) actin. B) microvilli. C) cytosol. D) basal body. E) matrix.

E) matrix.

52) The components of ribosomes are formed within A) the endoplasmic reticulum. B) Golgi complexes. C) lysosomes. D) mitochondria. E) nucleoli.

E) nucleoli.

Which form of endoplasmic reticulum modifies and packages newly synthesized proteins? A) ribosomal endoplasmic reticulum B) proteosomes reticulum C) raised endoplasmic reticulum D) smooth endoplasmic reticulum E) rough endoplasmic reticulum

E) rough endoplasmic reticulum

The endoplasmic reticulum is responsible for A) drug and toxin neutralization. B) lipid synthesis. C) modification of new proteins. D) shipping molecules to the Golgi apparatus. E) All of the answers are correct.

E) All of the answers are correct

Peroxisomes A) contain enzymes that break down hydrogen peroxide. B) absorb and break down fatty acids, generating hydrogen peroxide in the process. C) are produced from other peroxisomes. D) are more abundant in cells with higher metabolic rates. E) All of the answers are correct.

E) All of the answers are correct.

Which of the following terms is/are not used to define the structure that separates the contents of a human cell from its surrounding medium? A) cell wall B) cell membrane C) plasma membrane D) phospholipid bilayer E) both a cell wall and a phospholipid bilayer

E) both a cell wall and a phospholipid bilayer

The organelles and the watery component of the cell together is called A) cytosol. B) protoplasm. C) extracellular fluid. D) interstitial fluid. E) cytoplasm.

E) cytoplasm.