Blood displays a bright red color when
A) oxygen is released by hemoglobin as blood travels through capillaries.
B) four oxygen molecules bind to hemoglobin to create oxyhemoglobin.
C) plasma albumin levels increase as blood goes through the lungs.
D) carbon dioxide binds to the heme group of hemoglobin.
E) deoxyhemoglobin is formed in blood plasma.
B
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In the biological species concept, it is specified that two organisms are of the same species if they
breed and
a. are unsuccessful in producing offspring. b. produce any offspring. c. produce fertile offspring under laboratory conditions only. d. produce fertile offspring under normal circumstances. e. produce infertile offspring.
Comparing DNA sequences from living taxa and calibrating their rates of change with at least one well-dated fossil allows scientists to create time-calibrated trees with minimum and maximum age estimates for all branch points
Such studies are called ________ [two words] studies. Fill in the blank(s) with correct word
What is made by fermenting milk with Streptococcus thermophilus and Lactobacillus bulgaricus?
A. Sour cream B. Kefir C. Tofu D. Yogurt E. Cheese
_________ species can tolerate a wide range of environmental conditions and utilize a wide range of resources.
Fill in the blank(s) with the appropriate word(s).