Which is not true of the cell cycle?
(a) the cell cycle is controlled by internal/external signals
(b) Cyclin is a signaling molecule that increases and decreases as the cycle continues
(c) DNA damage can stop the cell cycle at the G1 checkpoint
(d) Apoptosis occurs frequently during the cell cycle
Ans: (d) Apoptosis occurs frequently during the cell cycle
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A vertebrate paleontologist is hunting through chalk deposits and finds a set of fused clavicles with some other bone fragments. What has she found?
A. The remains of an amphibian. B. The remains of a lobe-finned fish. C. The remains of a bird. D. The remains of a mammal. 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 bird adaptations? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Terminal buds release a hormone that inhibits the growth of nearby lateral buds
Indicate whether the statement is true or false.
How can the amount of yard waste produced by people be reduced?
A) through recycling B) through composting C) by having people bring their own waste to dumps D) through burning
Which of the following is true of both starch and cellulose?
A) They can both be digested by humans. B) They are both structural components of the plant cell wall. C) They are geometric isomers of each other. D) They are both polymers of glucose. E) They are both used for energy storage in plants.