A population is composed of individuals of
a. the same species.
b. interacting species of different kinds.
c. interacting species and nonliving things.
d. a single species interacting with nonliving
things.
e. all species found in a given area
A
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Which of the following will help you distinguish between the two final suspects?
You are a forensic technician working on a DNA sample obtained from a crime scene. Your job is to compare the unknown DNA sample with known DNA samples collected from five different suspects. Preliminary analysis using only a few DNA markers revealed that the unknown sample could possibly match two of the suspects. After consulting the case file, you find out that these two suspects are brothers (but not twins). You realize that you will have to do a more detailed analysis on the samples so that you can distinguish between the brothers and determine which brothers' DNA matches the unknown sample. A. single nucleotide polymorphisms (SNPs) B. human genome map C. linkage data D. markers on the Y chromosome Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about genetic maps and DNA markers? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
In many cells, the adhesion to the extracellular matrix through integrins causes the activation of kinases in the cytoplasm. This suggests that:
A. integrins promote the activation of signaltransduction pathways. B. integrins are kinases. C. extracellular matrix proteins are receptors and integrins are ligands.
Which of the following forms a protective layer outside of the plasma membrane of the plant cell?
A. cell wall B. cellulose C. chitin D. pectin E. proteoglycans
During exercise, the skeletal muscles receive
__________ blood, the brain receives __________ blood, and the gut receives __________ blood than at rest. a. more; the same amount of; less b. more; less; less c. the same amount of; the same amount of; less d. the same amount of; the same amount of; more e. less; more; less