Which of the following is not true of

telomeres?
a. The have the sequence TTAGGG.
b. They are at the ends of chromosomes.
c. Their sequence is actively transcribed.
d. They shorten by 100 bases with each round
of cell replication.
e. They shorten from the action of DNA
polymerase.


C

Biology & Microbiology

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If a water molecule passes through the outer membrane of a chloroplast, how many more membranes will it have to move through to be in the stroma?  

A.  1 B.  2 C.  3 D.  4 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 the structure of a chloroplast? 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?

Biology & Microbiology

In order to examine mRNA transcripts isolated from cells, one needs to convert an RNA template to DNA. Doing this conversion requires which of the following enzymes?

A) reverse transcriptase B) reverse convertase C) DNA transcriptase D) DNA polymerase E) RNA polymerase

Biology & Microbiology

The two copies of each type of chromosome found in normal somatic (body) cells in an organism, throughout the cell cycle, are called:

A. Homologous chromosomes B. Kinetochores C. Daughter chromosomes D. Sister chromatids

Biology & Microbiology

A change in the number or structure of a chromosome is an example of a

a) beneficial mutation b) harmful mutation c) silent mutation d) chromosomal mutation

Biology & Microbiology