Module 2
Which of the following statements about cells is FALSE?
Cells join together to form organelles, which then form our organs and organ systems.
During which of the following phases does DNA replication occur?
Synthesis
Which of the following is primarily composed of DNA?
chromatin
What type of tissue has cells that are tightly packed, sits on a basement membrane, is avascular, and is easily regenerated?
epithelium
A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. This statement describes _____.
exocytosis
Some transport processes use transport proteins in the plasma membrane, but do not require ATP. This type of transport is known as _____.
facilitated diffusion
The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____.
facilitated diffusion
Which of the following is not a major function of proteins in the cell membrane?
forming the entire glycocalyx
Where in a typical eukaryotic cell would you expect to find genes?
in the DNA within the cell's nucleus
Which of the following acts as the digestive system of the cell, breaking down materials?
lysosome
Rheumatoid arthritis is a disease in which acid hydrolase enzymes escape from leaky cellular organelles, causing pain and a burning sensation in joints. The leaky organelles from which these acid hydrolase enzymes escape are the __________.
lysosomes
A primary active transport process is one in which __________.
molecules move through transport proteins that have been activated by ATP
What part of a cell membrane is usually in contact with the interstitial fluid?
phosphate heads of phospholipids
Which of the following is the main component of the cell membrane?
phospholipids
When a person is severely burned, fluid accumulates in pockets of skin called blisters. Which of the following cellular structures has been damaged and is the ultimate cause of fluid accumulation?
plasma membrane
The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. This statement describes _____.
primary active transport
During which of the following phases does chromatin condense and become chromosomes?
prophase
Which of the following lists, in correct order, the phases of mitosis?
prophase, metaphase, anaphase, telophase
Which of the following is NOT one of the three major components of a typical eukaryotic cell?
ribosome
Which organelle synthesizes proteins that are used in the cytoplasm?
ribosomes that are free within the cytoplasm
Which of the following is a characteristic of the cell membrane?
semipermeable
Which of the following lists, in correct order, the phases of interphase?
G1, S, and G2
The final processing of proteins "tagged" for secretion occurs in which cellular organelle?
Golgi apparatus
Which of these organelles is responsible for forming secretory vesicles?
Golgi apparatus