An important number in chemistry is known as a voadro's number, which is given in scientific notation as 6.0 X 10 to the 23rd. This is a very
A) large
B) small
Ans: A) large
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The first human diseases that was successfully treated using gene therapy was ______
A. Diabetes B. Cystic fibrosis C. Severe combined immunodeficiency diseases D. Muscular dystrophy
Gardeners sometimes plant clover between productive growing seasons. Why would this practice be beneficial?
A. Several types of nitrogen-fixing bacteria form a symbiotic relationship with the roots of clover. This would increase the amount of nitrogen in the soil available for subsequent seasons of other plants' growth. B. Clover is consumed by a number of animals. This would encourage the animals to feed/graze on the areas, leaving behind nitrogen-rich manure that would act as a natural fertilizer for subsequent seasons of other plants' growth. C. Clover is a unique plant that is capable of atmospheric nitrogen-fixation (pulling nitrogen directly out of the air and turning it into ammonia or amino acids). This directly provides nitrogen compounds for the soil for subsequent seasons of other plants' growth. D. The beneficial effect is more for water retention and elimination of soil erosion in between growing seasons. It has nothing to do with nitrogen compounds in the soil.
ATP is important in living organisms because:a
like all other nucleic acids, it stores hereditary information. b. like RNA, it acts as a source code for the formation of proteins. c. it can transfer some of its energy to other chemicals. d. it is an important structural component of cell membranes. e. it is easily converted to starch for long-term storage.
In double fertilization, one sperm fuses with the egg, and the other sperm fuses with the two antipodal nuclei. Indicate whether the statement is true or false