What cytokine is secreted by active T cells and natural killer cells, and inhibits viral replication, enhances phagocytosis in macrophages, boosts production of antibodies by B cells, and activates both natural killer cells and cytotoxic T cells?
A) interleukin-4
B) interleukin-10
C) interferon-alpha
D) interferon-gamma
E) interleukin-5
Answer: D) interferon-gamma
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Which label, A, B, C, or D, points to a neurosecretory neuron responsible for release of ADH and oxytocin?
1.A
2.B
3.C
4.D
The bones that make up the digits of the hands or feet are known as the ________
A) metatarsals B) carpals C) phalanges D) tarsals
Centromeres are
A. composed of microtubules. B. two identical sides of a metaphase chromosome. C. regions that attach chromosomes. D. the structures that contain genetic material.
An example of an ectothermic organism that has few or no behavioral options when it comes to its ability to adjust its body temperature is a _____
A) sea star living deep in the ocean B) bass living in a farm pond C) hummingbird flying through a prairie D) honeybee in a hive on a rural farm