Chapter 3 Quiz

Which of the following statements regarding the mitochondria is false? - The mitochondrial cristae increase the inner surface area of the organelle. - The matrix of the mitochondria contains metabolic enzymes involved in energy production. - Respiratory enzymes are attached to the surface of the cristae. - The mitochondria do not contain DNA or RNA. - The mitochondria produce most of a cell's ATP.

The mitochondria do not contain DNA or RNA.

Arrange the following events in protein secretion in the proper sequence. 1. The polypeptide chain enters the lumen of the endoplasmic reticulum. 2. Protein is produced by a ribosome 3. A secretory vesicle is formed. 4. A transport vesicle is formed. 5. The polypeptide chain enters the lumen of the Golgi complex.

2 - 1 - 4 - 5 - 3

T/F Exocrine glands secrete hormones directly into the bloodstream.

False

T/F Partially digested food traveling through the stomach and small intestine is technically not part of the body's internal environment.

True

T/F Some cells in the human body lack a nucleus, and some cells have more than one nucleus.

True

Which of the following best describes a cell membrane?

a bilayer of phospholipids with imbedded proteins

Which of the following is/are part of the extracellular fluid? intracellular fluid interstitial fluid plasma

bot interstitial fluid and plasma are correct

The fluid portion of the cytoplasm is called ___________.

cytosol

Simple squamous epithelial tissue is most closely associated with which of the following functions? exchange transporting protective secretory none of the above are correct

exchange

Collagen fibers in connective tissue are produced by ___________ cells.

fibroblasts

Which of the following organs is found in the abdominal cavity? gallbladder kidneys urinary bladder lungs heart

gallbladder

Which of the following junctions allows rapid cell-to-cell communication? gap junctions hemidesmosomes adherens junctions desmosomes tight junctions

gap junctions

Which of the following is not one of the four primary types of tissue? epithelial connective nervous glandular muscle

glandular

Cell-matrix anchoring junctions that use intracellular intermediate filaments to connect to matrix proteins are called __________.

hemidesmosomes

Cilia and flagella are composed of ___________.

microtubules

Which of the following is classified as a "mature" bone cell?

osteocyte

Which of the following is *not* a function of membrane proteins? catalyze reactions cell-to-cell recognition production of antibodies transport material signal transduction

production of antibodies

Which of the following is *not* characteristic of connective tissue. -it is the most abundant type of tissue in the body -has varying degrees of vascularity - there is no measurable space between the cells of connective tissue - can be used to store energy - the ground substance can range from a calcified matrix to a liquid

there is no measurable space between the cells of connective tissue

Pseudostratified columnar epithelium would be most closely associated with which of the following organs. trachea digestive tract urinary tract sweat glands alveoli of lungs

trachea