What are cataracts? What causes them?
What will be an ideal response?
A cataract is a clouding of the lens, which reduces the amount of light that reaches the retina. It initially causes blurred vision but can eventually lead to blindness. Exposure to UV light, steroid use, and diabetes can all lead to cataracts.
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Which of the following most accurately describes what is happening along the electron transport chain in the accompanying figure?
A) Electrons are transferred to ADP to generate ATP at each step in the process. B) Each electron carrier alternates between being reduced and being oxidized. C) ATP is generated at each step of the process. D) Energy of the electrons increases at each step of the process. E) Molecules in the chain give up some of their potential energy.
In a fetal pig, dorsal and ventral refer respectively to
(a) the head and tail regions of the body. (b) the tail and the head regions of the body. (c) the upper (back) portion and the lower (underside) portion of the body. (d) the lower (underside) portion and the upper (back) portion of the body.
The skin and oral cavity may have anaerobic microenvironments
Indicate whether this statement is true or false.
On its own, the product of the C group gene alone in Arabidopsis thaliana triggers ____________________.
A. sepal development B. stamen development C. carpel development D. petal development E. stamen and carpel development