Before mitosis, chromosomes appears as

A) microtubules.
B) matrix.
C) chromatin.
D) spindle fibers.


Ans: C) chromatin

Biology & Microbiology

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Steroid hormones can trigger gene expression in a select number of cells because

a. only target cells allow the steroid hormone to cross the plasma membrane. b. nontarget cells have a steroid hormone response element encoded in their DNA. c. only target cells have the correct receptor in their cytosol to bind to the hormone. d. nontarget cells lack the genes found in target cells. e. only target cells have the genes that steroid hormones activate.

Biology & Microbiology

Since epithelial tissues lack blood vessels, nutrients will reach the cells by __________

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Approximately what percent of the water that enters a plant is lost by transpiration?

a. 5 b. 10 c. 25 d. 50 e. 95

Biology & Microbiology

Which of the following is not true concerning the large intestine?

a. It is also called the colon. b. It harbors beneficial bacteria. c. It is involved with the absorption of sodium. d. It is involved with the absorption of water. e. It secretes digestive enzymes.

Biology & Microbiology