Before a pathogen can be destroyed in the antibody-mediated process, a T helper cell must recognize
an __________ on the surface of a macrophage.
a. antigen-MHC complex
b. antibody
c. interleukin
d. HLA group
e. antigen
A
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Suppose you have two traits controlled by genes on separate chromosomes. If sexual reproduction occurs between two heterozygous parents, what is the genotypic ratio of all possible gametes?
What will be an ideal response?
How is potocytosis different from pinocytosis?
a. Potocytosis involves receptors to import highly specific small molecules and fluid. b. Potocytosis initiates phagocytosis instead of pinocytosis. c. Potocytosis engulfs much larger volumes than pinocytosis. d. Potocytosis only happens in cases of cellular infection by a pathogen.
Four of the five answers listed below are
related to translation. Select the EXCEPTION.
a. ribosomes b. transcription c. DNA polymerase d. mRNA e. tRNA
When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur?
a) the cell will become flaccid b) the cell membrane will lyse c) plasmolysis will shrink the interior d) the cell will burst e) the cell will become turgid