Check all that occur at the cellular level as a result of aging.
What will be an ideal response?
(
Question 2) The process by which there is programmed cellular death is _____.
A.
apoptosis
B.
differentiation
C.
mitosis
D.
cleavage
(
Question 3) The presence of a cellular clock, presence of death genes and damage to DNA or mitochondria are all theories of _____.
A.
cleavage
B.
death
C.
aging
D.
differentiation
(
Question 4) What is the term used to describe a small generic membrane-bound structure that transports substances to the plasma membrane for release by exocytosis?
A.
Secretory vesicle
B.
Proteosome granule
C.
Chromatid
D.
Organelle
E.
Centrosome
(
Question 5) In one form of endocytosis a molecule binds to a specific protein on the cell surface and triggers vesicle formation and endocytosis. What type of transport is this?
A.
Pinocytosis
B.
Facilitated diffusion
C.
Receptor-mediated endocytosis
D.
Active exocytosis
(
Question 6) What is mediated transport?
A.
The movement of molecules across a membrane by means of a protein carrier.
B.
The process of peptide synthesis on the surface of the ribosome.
C.
The ability of molecules to pass through the nuclear membrane.
D.
The movement of vesicles by intermediate filaments.
(
Question 7) What is membrane potential?
A.
The rate of ATP production and transport by mitochondria.
B.
The ability of a membrane to actively transport carbohydrates out of the cytoplasm.
C.
The electrical charge difference across the membrane caused by ion movement.
D.
The ability of molecules to pass through the nuclear membrane.
(
Question 8) Ion movement across the plasma membrane creates an electrical charge difference known as ______.
A.
extracellular glycocalyx
B.
transcription
C.
respiration
D.
membrane potential
(
Question 9) Large molecules move across cell membrane with the help or assistance of protein carriers. This type of transport is generically called _______.
A.
mediated transport
B.
passive transport
C.
active transport
(
Question 10) Which molecule determines the fluidity of the plasma membrane?
A.
Protein
B.
Cholesterol
C.
Phospholipid
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