The ____ of marine mammals receives normal blood supply during deep dives

a. lungs
b. heart
c. brain
d. blood vessels
e. heart, brain, and blood vessels


ANSWER: c

Biology & Microbiology

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A person with blood group A has both A and B type antibodies

a. True b. False Indicate whether the statement is true or false

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Match the second messenger on the left with the properties on the right.

A) activates protein kinase C B) opens sensory-associated ion channels C) can bind calmodulin D) glucose mobilization E) opens calcium channels 1) cAMP 2) IP3 3) DAG 4) calcium 5) cGMP

Biology & Microbiology

The disaccharide shown above is ____

a. sucrose b. maltose c. lactose d. cellulose e. fructose

Biology & Microbiology

A region of chromatin has recently become DNAse I hypersensitive. Which enzyme has been activated to cause this change in chromatin structure?

A) histone methyltransferase B) histone acetylase C) histone deacetylase D) phosphatase E) kinase

Biology & Microbiology