What are cytokines?
A) alert hormones that trigger the body to prepare for injury by shrinking capillaries and increasing platelet production
B) enzymes that promote the replication and gathering of leukocytes
C) carbohydrates which reduce inflammation in the body
D) signaling proteins that help cells communicate with each other, initiating and coordinating immune actions
E) organic chemicals which stimulate fever via an increase in metabolism
Answer: D
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Many tropical ferns live on other plants without withdrawing nutrients from them. These ferns are said to be ____
a. epiphytes
b. bryophytes c. parasites d. pathogens e. saprophytes
What Takes Place During Metaphase I? - spindle apparatus - homologue pairs
What will be an ideal response?
A pregnant woman was told by her doctor that while she is pregnant she might want to let someone else care for her cats so she would not contract toxoplasmosis through which mechanism?
a. Cats may have fleas that transmit toxoplasmosis b. Scratches from infected claws c. Exposure to infected cat feces d. Infection from saliva e. Infection from mice the cat may bring into the house
Ions are atoms or molecules that carry an electrical charge sure to the gain or loss of:
A) protons B) electrons C) neutrons D) positrons