The movement of water across a membrane from an area of high to low water concentration is an example of ____
a. active transport only
b. endocytosis only
c. osmosis only
d. both osmosis and active transport
e. both diffusion and osmosis
ANSWER: e
You might also like to view...
Photosynthesis and respiration were the main causes of fluctuations in atmospheric CO2 levels over the last 500 million years
A. true B. false
Which of the following can be used as an energy source inside a human body?
a. proteins b. carbon dioxide c. water d. oxygen
Each of the following statements regarding CD95-stimulated programmed cell death is true except
A) CD95 ligand binding with CD95 receptor stimulates recruitment of adaptor proteins. B) adaptor proteins stimulate the PI3K-Akt pathway. C) recruitment to sites of receptor clustering activates initiator caspase (caspase 8) activity. D) initiator caspases proteolytically cleave executioner procaspases (procaspase 3). E) a caspase cascade results in the cleavage of many types of proteins in the target cell.
Which of the following statements about the brain is NOT correct?
A. The medulla oblongata has reflex centers for vomiting, coughing, sneezing, and swallowing. B. The thalamus relays sensory input from lower brain areas to the cerebrum. C. The hypothalamus is concerned with homeostasis and regulation of thirst, hunger, and blood pressure. D. The cerebellum functions in muscle coordination, posture, and balance. E. The pineal gland secretes serotonin, which is involved in mood changes.