Which of the following criteria is most useful in determining whether two organisms are related?

A) Both ferment lactose.
B) Both are gram-positive.
C) Both are motile.
D) Both are aerobic.
E) Each answer is equally important.


B

Biology & Microbiology

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Which of the following statements is true of histones?

A) Each nucleosome consists of two molecules of histone H1. B) Histone H1 is not present in the nucleosome bead; instead, it draws the nucleosomes together. C) The carboxyl end of each histone extends outward from the nucleosome and is called a "histone tail." D) Histones are found in mammals, but not in other animals or in plants or fungi.

Biology & Microbiology

Many ferns live on other plants without

withdrawing nutrients from them. These ferns are said to be

a. epiphytes. b. bryophytes. c. parasites. d. pathogens. e. saprophytes

Biology & Microbiology

What are three proteins or groups of proteins you would expect to find bound to the core promoter region in eukaryotes?

What will be an ideal response?

Biology & Microbiology

Shigellosis is typically acquired via the respiratory route.

Indicate whether the statement is true or false.

Biology & Microbiology