A person who cannot focus well on distant objects has ________
A) farsightedness
B) nearsightedness
C) astigmatism
D) cataracts
B
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Which of the following is not a part of the general viral reproductive cycle?
A. viral recognition of host surface proteins B. genome entry into the cell and immediate expression of some viral genes C. viral proteins are synthesized D. reverse transcriptase converts RNA to DNA E. fully assembled viruses are released
All the bones of an adult human contain red bone marrow and thus produce blood cells.
Indicate whether the statement is true or false
A simplified form of the Fick diffusion equation is J = KA (C1-C2) where J is the rate of diffusion, K is a constant, A is the area across which diffusion is occurring, and C1 and C2 are the concentrations of the substance on either side of the membrane. Given this, which of the following would INCREASE the rate of diffusion of a solute?
A. A decrease in D B. A decrease in A C. An equivalent decrease in both C1 and C2 D. An equivalent increase in both C1 and C2 E. An increase in C1 while holding C2 constant
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with purple flowers produces 3/4 tall purple and 1/4 tall white. What is the genotype of the parents?
A. Dd Pp x Dd pp B. Dd Pp x DD Pp C. DD Pp x dd Pp D. Dd pp x dd Pp E. DD Pp x dd pp