How many chromosomes are in a red blood cell taken from a normal person? ____________________ Fill in the blank(s) with the appropriate word(s)
ANS: none
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Oxygen moves from alveoli to the bloodstream ____
a. because the concentration of oxygen is greater in alveoli than in the blood b. mainly due to the activity of carbonic anhydrase in the red blood cells c. against a concentration gradient d. to equal the concentration of CO2 in the blood e. by active transport
If one left a "pasteurized" flask of broth for a long time at room temperature, it would stay sterile forever, at least in principle.
Answer the following statement true (T) or false (F)
One goal of pedigree analysis is to determine ____
a. what diseases a family will display b. if two people are related c. gene loci d. whether a gene has a dominant or recessive pattern of inheritance e. what treatment a person should undergo
Which adaptation is found among the majority of desert plants?
a. A period of dormancy b. Flowering only at night c. They deter predators d. A quick growing cycle e. Reduced water loss