What endogenous process helps plants to keep their movements and other responses synchronized with the environment?
A. purine monitoring
B. solar tracking
C. a circadian clock
D. auxin cycling
E. gravitropism
C. a circadian clock
Circadian rhythms relate the day-night cycle to the eukaryotic organism that has them.
You might also like to view...
The half-life of carbon-14 is 5,600 years. A fossil that has one-eighth the normal proportion of carbon-14 to carbon-12 is probably
A. 2,800 years old. B. 5,600 years old. C. 11,200 years old. D. 16,800 years old. E. 22,400 years old. 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 half-lives of radioactive isotopes? 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?
The same bacteria that are associated with periodontitis are associated with:
a. atherosclerosis b. the common cold c. influenza d. tuberculosis e. stomach ulcers
A _____________ medium promotes the growth of a specific microbe while inhibiting the growth of certain other microbes.
A) differential B) selective C) general purpose D) nonsynthetic
How many ATPs does the activation step require during a glycolysis energy production?
A) there are not enough ATPs available during this time so it requires 0 ATP. B) 36 ATPs C) 38 ATPs D) 2 ATPs