Certain body sites contain sequestered molecules, called ________ that escaped assessment during development of immune tolerance and are mistaken as foreign.
Fill in the blank(s) with the appropriate word(s).
autoantigens
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If the sperm cell contributes mitochondria to the oocyte, it is called _______
A. paternal leakage B. maternal leakage C. paternal inheritance D. mitochondria E. imprinting
Steroid hormones include
a. estrogens. b. growth hormone. c. melatonin. d. thyroid hormone. e. oxytocin.
Chemical substances secreted by cells into the extracellular fluids that travel through the blood and regulate the metabolic function of other cells in the body are called ________.
A) antibodies B) enzymes C) proteins D) hormones
A biologist is studying the population dynamics of pocket gophers in a meadow in central Oregon. She noted that, when population numbers are high, death rates from disease and starvation increase. This is an example of:
A) r-selected growth. B) the principle of intrinsic rate of growth. C) density dependent control. D) exponential growth.