The HIV virus contains all of the following components except ________
A) integrase
B) double-stranded RNA
C) single-stranded RNA
D) reverse transcriptase
E) protease
B
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Which of following statements about the causes and effects of global warming are accurate?
a. The effects of global warming will be uniform throughout the world. b. In addition to carbon dioxide, other greenhouse gases include methane and nitrous oxide. c. Melting of the Artic permafrost will slow the process of global warming because of new plant growth in those areas. d. The effects of global warming can be measured today. e. Carbon dioxide absorbs short wavelength radiant energy better than long wavelength radiant energy.
Saturated fats have long, straight tails of fatty acids and can clump tightly together in cells and animal bodies. Unsaturated fats have kinks in their tails due to double bonds, which prevent them from packing together as tightly. Animals that are ectotherms (their body temperature fluctuates with the environment) need to keep their membranes fluid at cooler temperature and thus use in their membranes.
A. mostly unsaturated fats B. mostly saturated fats C. equal amounts of saturated and unsaturated fats D. carbohydrates E. proteins
Where in a cell does glycolysis occur?
a. cytoplasm b. Golgi body c. nucleoid d. mitochondrion e. rough endoplasmic reticulum
Cells use membranes to help maintain set ranges of ion concentrations inside and outside the cell. Which of the following ions is the most abundant inside a typical mammalian cell?
(a) Na+ (b) K+ (c) Ca2+ (d) Cl–