Biology, 16.01.2021 07:00 abbisauers
Suppose you are on a class field trip to collect fossil shark teeth in the Sandy Beach. Which of the following tools would be best for your teacher to take long for you to use to collect the shark's teeth? Choose all that apply.
A. Mobile x-ray machine (uses x-rays to "see" inside things)
B. Hand trowel (a small shovel with a pointed tip)
C. Hand sieve (separates particles of different sizes)
D. Power drill (hand-held tool that drills holes in things)
Answers: 2
Biology, 21.06.2019 21:00
Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria
Answers: 1
Biology, 22.06.2019 02:20
Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?
Answers: 3
Biology, 22.06.2019 10:50
Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive
Answers: 2
Suppose you are on a class field trip to collect fossil shark teeth in the Sandy Beach. Which of the...
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