Biological magnification refers to the
1.increase in size of animals as they progress through a food chain.
2.increase in size of organisms as they progress through ecological succession.
3.increase in the efficiency of energy utilization as organisms progress through a food chain.
4.accumulation of toxic pollutants as animals pass through a food chain.
5.growth of organ size within organisms.
4
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What is the correct order of these events in recombination that is resolved by the crossover pathway?
1. Double-strand break formation 2. Strand invasion 3. Resection 4. Resolution of the double Holliday junction 5. Branch migration 6. Formation of a double Holliday junction A) 6, 1, 2, 5, 3, 4 B) 1, 2, 5, 3, 6, 4 C) 6, 4, 1, 2, 5, 3 D) 1, 3, 2, 6, 5, 4 E) 1, 2, 3, 5, 6, 4
The left ventricle in mammals is more muscular than the right ventricle because
A. the right ventricle only pumps blood into the right atrium. B. the left ventricle has to pump blood throughout the body at high pressure. C. the left ventricle pumps more total blood than the right ventricle. D. the left ventricle is always contracting to maintain a systemic blood pressure. E. the left ventricle pumps blood with a higher hematocrit than the blood that leaves the right ventricle. 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 mammalian heart? 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?
A set of cells that host various DNA fragments collectively representing an organism's entire set of genetic information is _____
a. genome b. clone c. genomic library d. GMO
What is the correct sequence of events during the life cycle of a moss?a. Gametes are produced in the archegonia and antheridia.b. Spores are released.c. The zygote develops within the archegonium.d. The mature sporophyte develops from the gametophyte and produces spores.e. Flagellated sperm swim towards the egg for fertilization.f. Spore germinates into the protonema.
A. f - e - b - d - a - c B. a - b - d - c - b - f C. a - e - c - d - b - f D. a - e - f - d - b - c