Which of the following includes all the others?
a. sucrose
b. glucose
c. cellulose
d. glycogen
e. carbohydrate
Answer: e
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Marathon runners are long-distance runners (marathons are races that are 26.2 miles long). Studies have shown that the muscles of marathon runners contain an abundance of slow-twitch muscle cells. Which of the following statements about these fibers is
true? A) Slow-twitch fibers have lots of mitochondria to make ATP aerobically. B) Slow-twitch fibers have lots of mitochondria to make ATP through fermentation. C) Slow-twitch fibers have few mitochondria and make ATP aerobically. D) Slow-twitch fibers have few mitochondria and make ATP through fermentation.
Which of the following is true about telomeres and immortality?
A. Immortal cell lines lack telomeres. B. Immortal cell lines lack telomerase. C. Reactivation of telomerase in humans will cause them to become immortal. D. Tumor cell lines can be immortal if their telomerase gene is reactivated. E. Immortal cell lines have telomerase activity but cannot form t-loops and don't have protective proteins to prevent recombination repair.
Localized regions of plasma membranes that contain cholesterol and proteins involved in cell signaling are known as
A) gap junctions. B) arterial plaques. C) cadherin junctions. D) lipid rafts. E) plasmodesmata.
Pea fowl (peacocks and peahens) show sexual dimorphism -- males have long blue-green tail feathers with eyespots, while females have short brown tail feathers. Which statement best describes the graphed data about peacocks?
A. There are no peacocks with less than 140 eyespots.
B. The fewer eyespots that a peacock has in his tail, the more mates he attracts.
C. Actually eyespots have very little to do with mate-attracting activities.
D. The more eyespots that a peacock has in his tail, the more mates he attracts.
E. There are no peacocks with more than 165 eyespots.
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 sexual selection? 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?
Reflection 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?