Alberto had a bad bump on his leg, so he went to see the doctor about it. The physician diagnosed it as a blood clot and said that blood clots can float away into the circulation. One of these floaters is called a(n) ________
A) embolus B) prothrombin C) formed element D) platelet plug
Answer: A
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Because they differ from all other living organisms by lacking a discrete nucleus and many other cell inclusions, Bacteria and Archaea are considered to be:
A. karyoki B. prophasic C. histrionic D. prophylactic E. prokaryotic
Linen is woven from strands of sclerenchyma _______ that occur in the phloem of flax (Linum spp.).
A. tracheid B. sieve C. sclerid D. collenchyma E. fiber
carbon fixation
What will be an ideal response?
Which of the following types of reproductive barriers separates a pair of species that could interbreed but for the fact that one mates at dusk and the other at dawn?
A) temporal isolation B) habitat isolation C) behavioral isolation D) mechanical isolation