CH3

58) ________ secretions are released into interstitial space to diffuse into the blood. A) Endocrine B) Exocrine C) Mucous D) Serous E) Ribosomal

A) Endocrine

33) Every substance that enters or leaves the internal environment of the body must cross an epithelium. A) True B) False

A) True

48) Chondrocytes secrete a firm but flexible matrix to form what tissue? A) cartilage B) bone C) loose connective tissue D) fat E) blood

A) cartilage

31) Glands that secrete hormones into the blood via tissue fluids are A) endocrine glands. B) mixed glands. C) exocrine glands. D) unicellular glands. E) None of the answers are correct

A) endocrine glands.

68) Close examination of an organ reveals a lining of several layers of cells. The layers do not contain any blood vessels, and one surface of the cells faces the internal cavity of the organ. This tissue is probably A) epithelium. B) muscle tissue. C) connective tissue. D) neural tissue. E) fat tissue.

A) epithelium.

19) The number of mitochondria in skeletal muscle cells is ________ adipose (fat) cells. A) greater than B) less than C) equal to

A) greater than

55) The study of tissue structure and function is called A) histology. B) plasticity. C) differentiation. D) physiology. E) remodeling.

A) histology.

5) Which of the following is an example of a membranous organelle? A) lysosome B) cilia C) centriole D) ribosome E) cytoskeleton

A) lysomome

20) The control center for cellular operations is the A) nucleus. B) mitochondria. C) Golgi complex. D) endoplasmic reticulum. E) ribosomes.

A) nucleus.

44) This modifies proteins and packages them into secretory vesicles for export from the cell. A) endoplasmic reticulum B) Golgi apparatus C) lysosomes D) mitochondria E) peroxisomes

B) Golgi apparatus

15) The proteins synthesized in the rough endoplasmic reticulum are then sent to the A) smooth endoplasmic reticulum for storage. B) Golgi complex for packaging. C) lysosome for modification. D) cell membrane for secretion. E) nucleus for cellular use.

B) Golgi complex for packaging.

35) The simple squamous epithelial lining of blood vessels is called A) basolateral epithelium. B) endothelium. C) luteal cells. D) the vasa recta. E) None of the answers are correct.

B) endothelium.

54) The combination of fibers and ground substance in supporting connective tissues is known as A) cytoplasm. B) extracellular matrix. C) blood. D) mucous. E) micelles.

B) extracellular matrix.

66) The tissue(s) that is/are considered excitable because of the ability to generate electrical signals is/are called ________ tissue. A) muscle B) neural C) epithelial D) muscle tissue and neural E) muscle tissue, neural tissue, and epithelial

B) neural

21) The beta cells of the pancreas produce insulin, a protein-based hormone. Which of the following organelles would be found in higher levels in the beta cells? A) mitochondria B) ribosomes C) microvilli D) lysosomes

B) ribosomes

65) Examination of a sample of glandular cells reveals an extensive network of smooth endoplasmic reticulum. Which of the following would be a likely product of these cells? A) digestive enzymes B) steroid hormones C) protein (peptide) hormones D) transport proteins E) antibodies

B) steroid hormones

50) Nucleoli function in the production of A) peroxisomes. B) secretory vesicles. C) RNA for ribosomes. D) DNA that controls all cell functions. E) proteins.

C) RNA for ribosomes.

37) Cells that store fat are called A) fibroblasts. B) liposomes. C) adipocytes. D) mast cells. E) melanocytes.

C) adipocytes.

16) If a cell lacked lysosomes, it would not be able to A) synthesize lipids. B) produce enzymes. C) digest cellular wastes and bacteria. D) destroy H2O2. E) transport water-soluble molecules.

C) digest cellular wastes and bacteria.

34) The function of microvilli, often seen on the apical membrane of transporting epithelia, is to A) increase the movement of extracellular fluid. B) increase the resistance of the cell to viruses. C) increase the cell's surface area. D) increase the toughness of the cell. E) allow the cell to move through a fluid medium.

C) increase the cell's surface area.

47) Fibroblasts that secrete collagen-rich matrix dominants this tissue. A) cartilage B) bone C) loose connective tissue D) fat E) blood

C) loose connective tissue

43) This is the digestive system of a cell, degrading and/or recycling bacterial or organic components. A) endoplasmic reticulum B) Golgi apparatus C) lysosomes D) mitochondria E) peroxisomes

C) lysosomes

30) Epithelial cells that are adapted for membrane transport of materials, such as ions and nutrients, usually have ________ on their apical surface. A) mitochondria B) cilia or flagella C) microvilli D) junctional complexes E) vesicles

C) microvilli

28) Each of the following is a primary tissue type EXCEPT one. Identify the exception. A) muscle tissue B) neural tissue C) osseous tissue D) connective tissue E) epithelial tissue

C) osseous tissue

13) Which of the following is NOT a molecule synthesized in the smooth endoplasmic reticulum (SER)? A) fatty acids B) steroids C) proteins D) lipids E) All are synthesized in the SER.

C) proteins

67) The distinguishing characteristic of connective tissue is A) that it is arranged in sheets of tissue that lie on body surfaces. B) that it is always dividing, constantly being replaced throughout the body. C) the presence of extensive extracellular matrix containing widely scattered cells. D) the collagen fibers that offer support. E) All of these characteristics help make connective tissue unique.

C) the presence of extensive extracellular matrix containing widely scattered cells.

57) ________ secretions are released onto an epithelial surface. A) Nuclear B) Hormonal C) Microtubular D) Exocrine E) Endocrine

D) Exocrine

12) All of the following are synthesized along various sites of the endoplasmic reticulum EXCEPT one. Identify the exception. A) proteins B) fatty acids C) steroids D) RNA E) phospholipids

D) RNA

8) Each of the following statements concerning mitochondria is true EXCEPT one. Identify the exception. A) The mitochondrial cristae form the inner membrane forming separate compartments. B) The matrix of the mitochondria contains metabolic enzymes involved in energy production. C) The intermembrane space plays an important role in mitochondrial ATP production. D) The mitochondria contain no DNA or RNA. E) The mitochondria produce most of a cell's ATP

D) The mitochondria contain no DNA or RNA.

10) Microvilli are found A) mostly in muscle cells. B) on the inside of cell membranes. C) in large numbers on cells that secrete hormones. D) in cells that are actively engaged in absorption. E) only on cells lining the reproductive tract.

D) in cells that are actively engaged in absorption.

29) Functions of epithelia include all of the following EXCEPT A) providing physical protection. B) controlling permeability. C) producing specialized secretions. D) storing energy reserves. E) movement.

D) storing energy reserves.

The esophagus is a tube that carries food from the mouth to the stomach. It does not secrete any enzymes or absorb any nutrients, but it does need to stand up to significant friction and stress. The type of epithelium most likely lining the esophagus would be A) cuboidal epithelium. B) simple squamous epithelium. C) simple columnar epithelium. D) stratified squamous epithelium. E) transitional epithelium.

D) stratified squamous epithelium.

Which of the following is NOT a function of membrane proteins? A) respond to extracellular molecules B) creating junctions between cells C) act as transport molecules for various solutes D) anchor or stabilize the cell membrane E) produce energy

E)

36) Functions of connective tissue include A) establishing a structural framework for the body. B) transporting fluids and dissolved materials. C) providing protection for delicate organs. D) storing energy reserves. E) All of the answers are correct.

E) All of the answers are correct.

32) Exocrine glands A) may make either mucous or serous secretions. B) release their secretions into the external environment. C) release their secretions through open tubes, called ducts. D) may work as single cells or as a multicellular organ. E) All of the statements are true.

E) All of the statements are true.

22) If the adrenal cortex produces lipid-based hormones such as aldosterone, which organelle would be higher in cells of the adrenal cortex than in the adrenal medulla? A) Golgi apparatus B) mitochondria C) ribosome D) rough endoplasmic reticulum E) smooth endoplasmic reticulum

E) smooth endoplasmic reticulum

What is/are the major role(s) of the cellular membrane?

it forms a barrier to water-soluble molecules, and that selectively allows lipid-soluble molecules and to provide a framework for membrane proteins

74) The endoplasmic reticulum is considered

membranous organelle

73) Cilia are considered

protein fiber