Viruses, viroids, and prions all
A. operate intracellularly.
B. may be considered acellular agents of disease.
C. contain DNA.
D. infect only animals.
E. operate intracellularly AND may be considered acellular agents of disease.
E
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Primary productivity in forests often increases during the early stages of stand development and then decreases again as the forest ages and standing biomass increases
Indicate whether the statement is true or false
In cell membranes cholesterol and glycoproteins are exposed to the extracellular surface for cell
recognition and adhesion to other cells. __________________ Indicate whether the statement is true or false.
You think about some scary situation and realize that you had the same reaction when you were called on in class to answer a question in front of everyone. Your teacher used that exercise to describe that the hormone ________ can be produced in fearful
situations by ________. A) epinephrine; adrenal glands B) epinephrine; parathyroid glands C) glucagon; pancreas D) calcitonin; thyroid gland
Although glycolysis requires an input of ATP, this pathway results in a net gain of two ATP; therefore it is a(n) ________ pathway
A) exergonic B) endergonic C) oxidative D) reductive E) neither exergonic nor endergonic