Select the type of T cell that plays a role in diminshing an immune response.
A. TH1
B. TC
C. TREG
D. TH17
C. TREG
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What kind of bond holds NaCl molecules together and how does it form?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1) Cytokinesis in plant cells occurs by means of a cleavage furrow. 2) DNA replication occurs in mitosis. 3) Mitosis and cytoplasmic division result in the formation of two genetically identical cells. 4) Germ-line cells are haploid but gametes are diploid. 5) At the end of meiosis I, each daughter cell contains the sister chromatids from only one chromosome from each chromosomal pair. 6) XY individual with a loss-of-function mutation in the SRY gene is expected to be female.
When scientists transferred the gene for the AVP receptor from male voles into male mice, the male mice
a. began to eat roots, a preferred food of voles b. attempted to locate and mate with female voles c. preferred female mice they had already mated with to new females d. ceased normal social behaviors such as grooming and co-sleeping e. became aggressive and territorial
Which of the following most accurately
describes the cellular activity associated with the actual passage of a nerve impulse? a. electrical discharge b. action of sodium-potassium pump c. positive feedback d. hyperpolarization followed by rebalancing e. active transport of ions