The leopard seal's primary predator is called the:

a. sperm whale.
b. polar bear.
c. killer whale.
d. salt water crocodile.
e. Weddel seal.


C

Biology & Microbiology

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The water lattice illustrated in the figure above forms as a result of ____ between water molecules

a. covalent bonds b. hydrogen bonds c. nonpolar interactions d. ionic bonds e. van der Walls forces

Biology & Microbiology

To allow cell wall extension with new peptidoglycan during cell division, preexisting peptidoglycan is severed using ________ to cleave the ?-1, 4 glycosidic bonds

a. autolysins b. crescentins c. transglycosylases d. both autolysins and transglycosylases

Biology & Microbiology

In the cAMP pathway, the G protein stimulates

a. phospholipase C b. adenylyl cyclase c. the endoplasmic reticulum d. calmodulin

Biology & Microbiology

Feeling tired after a long day of work, you walk across a parking lot at night to get to your car. As you approach the car you see a shadow extending behind the back of the car. You immediately feel a rush of energy, your heart starts pounding, and you

feel wide awake and alert. You are experiencing A) an allergic reaction. B) a drop in blood pressure. C) the fight-or-flight response. D) effects of endocrine disruptors.

Biology & Microbiology