Which of the following correctly describe the color of different cells after using the Gram staining technique?

> Gram-negative - Purple
> Gram-negative - Pink/red
> Gram-positive - Purple
> Gram-positive - Pink/red


> Gram-negative - Pink/red
> Gram-positive - Purple

Biology & Microbiology

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DNA replication is a ____ process

a. non complementary b. semiconservative c. semisynthetic d. mutational e. denaturation

Biology & Microbiology

Which of the following is a physiological response that takes place in many animals when they get too hot?

A) slowing of the heart rate B) constriction of blood vessels in the skin C) contraction of muscles D) increased blood flow to the skin

Biology & Microbiology

One solution to the problem of species extinction is captive breeding in zoos and gardens. What are some of the problems associated with this solution?

What will be an ideal response?

Biology & Microbiology

Older people are more likely to develop autoimmune diseases. One possibility is

a. a heightening of the immune response associated with age. b. an increase in the number of T cells. c. an increase in the activity of B cells. d. a reduction in DNA repair mechanisms leading to a change in self-markers. e. viral infections.

Biology & Microbiology