Small hairlike structures made up of protein on the surface of bacteria are called:a
capsids.
b. fimbriae.
c. chromatids.
d. plasmids.
e. virons.
b
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The area of the retina that is richest in photoreceptors is called the ________
a. choroid b. fovea c. sclera d. optic nerve
The main benefit to a plant from a mycorrhizal association is
a. enhanced water uptake. b. removal of excess carbohydrates. c. enhanced flow of carbohydrates to the roots. d. enhanced mineral ion uptake. e. enhanced protection of roots from bacterial infections.
Once a macrophage ingests a foreign antigen,
the antigen is presented in which of the following manners?
a. embedded directly in the cell membrane of the macrophage b. embedded in the membrane of a transport vesicle and released via exocytosis c. attached to a receptor protein, forming a receptor-antigen complex d. attached to MHC, forming a MHC-antigen complex e. none of these
What is the ability of a gene to cause multiple effects on a phenotype?
A) pleiotropy B) codominance C) polygenic inheritance D) continuous variation