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Human Physiology Practice Questions for MCQ exam, Level 4 Module
What is human physiology study?
How functions in the human body occur/regulate.
What does homeostasis mean?
Maintenance of relatively stable internal environment.
What does dynamic disequilibrium mean?
Gradients are maintained even though there is still movement.
What does phenotypic plasticity mean?
Changes in phenotype.
What is one of the unifying themes of human physiology?
1) Physiological phenomena are manifestations of chemical and physical properties.
2) Physiological processes are regulated to maintain homeostasis.
3) Physiological phenotype = genotype and environment.
4) Physiological processes are products of evolution.
What is one characteristic of membranes to allow for transport across it?
Membranes are semipermeable.
What does semipermeable mean?
Small, nonpolar solutes can cross the membrane on their own.
What are some examples of nonpolar solutes?
Dissolved gases, fatty acids and steroid hormones.
What is necessary to transport other types of solutes?
Protein-mediated transport.
What does a channel protein do?
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Form a solute-specific pore in the membrane.
Some characteristics of channel proteins?
Some are always open and some are gated.
Examples of channel proteins that are always open?
Aquaporins, Ion leak channels.
Examples of gated channel proteins?
Ligand-gated, Voltage-gated and Mechanically-gated.
What must carrier proteins have?
A conformational change each time they transport a solute.
What is a uniporter?
It is a carrier protein that transports a single solute in the same direction.
What is a symporter?
A carrier protein that transports multiple solutes in the same direction.
What is an antiporter?
A carrier protein that transports multiple solutes in the opposite direction.
What do some carrier proteins use??
Active transport to move solutes against their gradients.
What does active transport require and what is an example of it?
ATP, Na/K, ATPase
What does gradient mean?
Difference between two points in concentration, charge, pressure and temperature.
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Human Physiology Practice Questions for MCQ exam, Level 4 Module
What is human physiology study?
How functions in the human body occur/regulate.
What does homeostasis mean?
Maintenance of relatively stable internal environment.
What does dynamic disequilibrium mean?
Gradients are maintained even though there is still movement.
What does phenotypic plasticity mean?
Changes in phenotype.
What is one of the unifying themes of human physiology?
1) Physiological phenomena are manifestations of chemical and physical properties.
2) Physiological processes are regulated to maintain homeostasis.
3) Physiological phenotype = genotype and environment.
4) Physiological processes are products of evolution.
What is one characteristic of membranes to allow for transport across it?
Membranes are semipermeable.
What does semipermeable mean?
Small, nonpolar solutes can cross the membrane on their own.
What are some examples of nonpolar solutes?
Dissolved gases, fatty acids and steroid hormones.
What is necessary to transport other types of solutes?
Protein-mediated transport.
What does a channel protein do?
Find more resources on this topic on
, dmuwodmfdmuwodmfdmuwodmf-c707c93d0145f4320e5d87845e2f3a8c
Form a solute-specific pore in the membrane.
Some characteristics of channel proteins?
Some are always open and some are gated.
Examples of channel proteins that are always open?
Aquaporins, Ion leak channels.
Examples of gated channel proteins?
Ligand-gated, Voltage-gated and Mechanically-gated.
What must carrier proteins have?
A conformational change each time they transport a solute.
What is a uniporter?
It is a carrier protein that transports a single solute in the same direction.
What is a symporter?
A carrier protein that transports multiple solutes in the same direction.
What is an antiporter?
A carrier protein that transports multiple solutes in the opposite direction.
What do some carrier proteins use??
Active transport to move solutes against their gradients.
What does active transport require and what is an example of it?
ATP, Na/K, ATPase
What does gradient mean?
Difference between two points in concentration, charge, pressure and temperature.
Save time with the right summary on
