Plasma is a serum without the clotting factors
a) true
b) false
Ans: b) false
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How does the patella reflex differ from the pupillary reflex?
Action A baby wetting a diaper Braking a car to avoid an accident Withdrawing your hand from a hot stove surface Sneezing Waving to a friend across the street
Which hypothesis states that life developed from nonliving matter?
a. abiotic evolution b. natural selection c. organic evolution d. chemical evolution e. inorganic evolution
In rats, gene B produces black coat color if the genotype is B-, but black pigment is not produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the genotype is D-, but no pigment is produced when the genotype is dd. Production of both pigments results in brown coat color. If neither pigment is produced, coat color is cream. The phenotype of parents of litters with the following phenotype distribution 3 brown, 3 yellow, 1 black, 1 cream is:
a. Black and cream. b. Black and yellow. c. Brown and cream. d. Brown and yellow.
Oncologists (medical doctors who treat cancer patients) routinely take biopsies (samples) of tissue from patients to determine whether the tissue is cancerous or not. What would be the best technique to use to determine whether cells from the tissue
sample are cancerous? A) Count the number of chromosomes in the cells from the tissue sample and compare to the number of chromosomes in noncancerous cells from the patient. B) Add cells from the tissue sample to a cell culture dish and compare their growth against a sample of noncancerous cells from the patient. C) Measure the amount of DNA in G1 in the cells from the tissue sample and compare it to the amount of DNA in G2 in noncancerous cells from the patient. D) Add cells from the tissue sample to a rat to see whether the rat develops cancer or not.