In the human diet, there are no "essential" ______ .
A. amino acids
B. vitamins
C. fatty acids
D. minerals
E. carbohydrates
E. carbohydrates
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Choose the evidence supporting that snakes evolved from legged lizards. Check all that apply.
_____ Snakes have pelvic bones. _____ The oldest snake-like fossils have leg bones. _____ Transitional fossils show sections of the snake backbone evolving into legs. _____ Snake embryos temporarily develop limb buds which are reabsorbed before birth. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the evidence for evolution? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Before they enter the blood stream, what
modification occurs to erythrocytes?
a. they are loaded with ant-bacterial compounds b. they lose their nucleus and other organelles c. they absorb oxygen and release carbon dioxide d. they are wrapped in a double plasma membrane e. they absorb nutrients and expel wastes
A strain of a cereal grain can be either dark tan, medium-dark tan, medium tan, light tan, or cream colored. When a dark tan and a cream plant are crossed, all F1 are medium tan
The F2 are distributed in a ratio of 1:4:6:4:1 from darkest to lightest. How many additive alleles are needed to produce the darkest phenotypes?
Refer to the accompanying figure. The structure labeled as 2 is homologous with the structure labeled as:
a. 1. b. 3. c. 4. d. 5. e. 7.