What is a main function of the structure in the accompanying figure labeled A?

A. It controls cell shape.
B. It separates DNA during cell division.
C. It helps nerve cells lengthen.
D. It is found in hair.
E. It helps regulate DNA replication.


Answer: B

Biology & Microbiology

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Discuss how the therapy for PKU would be different if the disease was not caused by the essential amino acid phenylalanine, but rather by a non-essential amino acid. Would the disorder be potentially more or less life-threatening? Explain your reasoning

What will be an ideal response?

Biology & Microbiology

____________ is a segment of a chromosome that controls a specific function

a. DNA b. RNA c. An enzyme d. A gene e. An amino acid

Biology & Microbiology

Referring to the figure showing helper T cell function, which statements are true? (Check all that apply.)



_____  Cytokines are produced in both diagrams.
_____  Antigens play a role in both diagrams.
_____  Naïve cells are involved in diagram I.
_____  The humoral response is represented in diagram II.

Biology & Microbiology

The sex of all animals is determined by chromosomes.

Answer the following statement true (T) or false (F)

Biology & Microbiology