Where is the auxin receptor ABP1 located in plant cells?
a. cell wall
b. cytoplasm
c. endoplasmic reticulum
d. plasma membrane
e. nucleus
D
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Phagocytosis
A. is the ingestion of particles and may be performed by animal cells. B. is the ingestion of particles and may be performed by bacteria. C. is the secretion of proteins. D. is the formation of a lysosome. E. is the ingestion of particles and may be performed by bacteria AND is the formation of a lysosome.
Which of the following is only true of RNA, but not DNA?
A. Guanine pairs with cytosine. B. Adenine pairs with uracil. C. The backbone is made up of alternating 5-carbon sugars and phosphate groups. D. It is comprised of nucleotides.
Platelets are large cells that aid in blood clotting
Indicate whether the statement is true or false
How is the development of autoimmunity normally prevented?
A) T lymphocytes that respond to autoantigens in the thymus undergo clonal deletion. B) T lymphocytes require a specific set of cytokine signals to become activated. C) Regulatory T cells suppress autoimmune responses. D) Clonal deletion of T cells and regulatory T cell suppression prevent autoreactive T cell activation. E) Clonal deletion of T cells, lack of necessary cytokine signals, and regulatory T cell suppression prevent activation of autoreactive T cells.