Chapter 1 Flashcards
What are the principle parts of a eukaryotic cell:
a. fat, carbohydrate, and protein
b. minerals and water
c. organelles
d. phospholipids and protein
c. Organelles
Caveolae
a. serve as repositories for some receptors
b. provide a route for transport into a cell
c. relay signals into cells
d. a & b are correct
e. a,b, & c are correct
Serve as repositories for some receptors
Provide a route for transport into a cell
Relay signals into cells
What is a vault?
a. an organelle
b. barrel-shaped
c. believed to transport mRna into ribosomes
d. a&b are correct
e. a,b,c are correct
An organelle
It is barrel shaped
Believed to transport mRNA to ribosomes
For a cell to engage in active transport, it requires?
a. an expenditure of energy
b. appropriate fuel
c. ATP
d. all of the above are correct
An expenditure of energy
Appropriate fuel
ATP
Which of the following is inconsistent with the others? Diffusion Osmosis Hydrostatic Pressure Phagocytosis
Phagocytosis
Which of the following can transport substances against or up the concentration gradient? Active Transport Osmosis Dialysis Facilitated Diffusion None of the above
Active transport
Imagine that you have an aqueous (water) solution A and an aqueous solution B separated by a membrane that is permeable to the solvent but it is not permeable to the solute. If solution A is isotonic to Human bolo and solution B is hypotonic to human blood, then:
a. net diffusion of the solute will occur from side B to side A
b. net diffusion of the solute will occur from side A to side B
c. Net osmosis will occur from side B to side A
d. Net osmosis will occur from side A to side B
Net osmosis will occur from side B to side A
Which statement is true about cytoplasm
a. it is located outside the nucleus
b. it provides support for organelles
c. it is mostly water
d. all of the above are true
e. only A&b are true
It is located outside the nucleus
It provides support for organelles
It is mostly water
What are Ribosomes?
a. are found on smooth endoplasmic reticulum
b. Are the sites for cellular protein synthesis
c. are synthesized in the cytosol
d. are made of the protein clathrin
e. conduct nerve impulses
Are the sites for cellular protein synthesis
What are activities occurring in the cytosol
a. Intermediary metabolism
b. ribosomal protein synthesis
c. conversion of glucose to glycogen
d. a&b are correct
e. a,b, & c are correct
Intermediary metabolism
ribosomal protein synthesis
conversion of glucose to glycogen
Ligands that bind with membrane receptors include which of the following?
a. hormones
b. antigens
c. neurotransmitters
d. drugs
e. infectious agents
f. all of the above
Hormones Antigens Neurotransmitters Drugs Infectious agents
The products from metabolism of glucose include what?
a. kilocalories
b. C02
c. H20
d. ATP
e. all of the above
e. all of the above
Identify the correct sequence of events for initiation and conduction of a nerve impulse
a. Sodium Permeability Changes
b. Sodium Moves into the cell
c. Potassium permeability changes
d. Potassium leaves the cell
e. Resting potential is reestablished
Sodium Permeability Changes Sodium Moves into the cell Potassium permeability changes Potassium leaves the cell Resting potential is reestablished
Potocytosis
a. it Involves the cellular uptake of small molecules
b. Opens and closes caveolae
c. does not form a membrane enclosed vesicle
d. all of the above are correct
Involves the cellular uptake of small molecules
Opens and closes caveolae
does not form a membrane enclosed vesicle
Cell junctions:
a. Coordinate activities of cells within tissues
b. are an impermeable part of the plasma membrane
c. hold cells together
d. a&c are correct
e. a&b are correct
Coordinate activities of cells within tissues
hold cells together
