All of the following are iron-binding proteins found in humans EXCEPT
A) lactoferrin.
B) transferrin.
C) hemoglobin.
D) siderophorin.
E) ferritin.
D
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The extinction vortex
A. is what happens as a population decreases and becomes more vulnerable to extinction from a variety of causes. B. begins when one species in an ecosystem goes extinct and other species follow. C. is what happens when competing species fight over a single niche, often driving both species to extinction. D. is a spiral of events that occur once a species has become overcrowded through excess reproduction. E. is a spiral of events that includes introduction of competing species, overexploitation, and disease, in that order.
Chestnut blight is caused by a:
a. Bacteria b. Fungus c. Protist d. Worm e. Virus
_____ is performed to detect genetic disorders and birth defects in a fetus
a. Carrier testing b. Prenatal testing c. Genetic screening d. Gene therapy e. Enzyme replacement therapy
Fall is coming, with the prospect of frost, so you decide to pick the last tomatoes on the vine even though they are still green. If you wanted to ripen these tomatoes, which method would be most effective?
A) Put the green tomatoes in a paper bag, and keep the top of the bag open. B) Put the green tomatoes in a dark closet, but with a flash of light about every 4 hours. C) Put the green tomatoes in a plastic bag with an overripe apple. D) Store each green tomato in a separate plastic bag and put them in the dark.