In mammals, which of the following substances is produced in a muscle that operates anaerobically?
(A) Citrate
(B) NADPH
(C) Lactate
(D) Oxygen
Ans: (C) Lactate
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The organelle that resembles a "stack of pancakes" is the
a. ribosome. b. lysosome. c. nucleolus. d. Golgi body. e. peroxisome.
Hydropower can have an affect on
a. water pollution. b. soil erosion. c. deforestation. d. river and ocean life. e. mineral leaching.
The organisms formerly classified in the Kingdom Protista ________
A) all contain chloroplasts B) form a single monophyletic group C) include the last universal common ancestor (LUCA) of life D) are scattered throughout all branches of the eukaryote family tree E) have a fossil record extending back 3.4 million years
Scientists have a complete fossil record showing the evolution of horses over millions of years, with the legs becoming longer and the teeth larger, as ancestors of the modern horse adapted from living in forest to grasslands. This is an example of
A. punctuated equilibrium. B. extinction. C. a postzygotic barrier to evolution. D. gradualism. E. a prezygotic barrier to evolution.