Which of the following plant structures shares the most common features and functions with a fungal hyphae?
A) stomata
B) vascular cambium
C) lenticels
D) root hairs
E) prop roots
Answer: D
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You are examining the effect of maturation-promoting factor (MPF) in sea urchin cells, which have a diploid number of 36. If you fuse a dividing sea urchin cell with a G1 arrested oocyte, what would be the outcome?
A. The G1 cell would enter mitosis, but would likely arrest at the spindle checkpoint because the chromosomes have not been properly replicated. B. The G1 cell would undergo mitosis and its daughter cells would each have 36 chromosomes. C. The G1 cell would undergo mitosis and its daughter cells would each have 18 chromosomes. D. The G1 cell would first go through S phase and then mitosis. Its daughter cells would have 36 chromosomes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about MPF? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
Which of the following statements about tRNA is FALSE?
A. tRNAs of both eukaryotes and prokaryotes share common features. B. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern. C. tRNAs are produced in the nucleus. D. tRNAs can be spliced by splicesomes. E. tRNAs possess an anticodon complementary to the codon.
Normally in humans, all the sons of a male showing a sex-linked phenotype will inherit the trait
Indicate whether the statement is true or false
Why does DNA polymerase I carry the number one?
A. It is the smallest polymerase. B. It is the first polymerase to be activated during DNA replication. C. It was the first polymerase isolated from E. coli. D. It is the only polymerase that has both 3' to 5' and 5' to 3' exonuclease activity.