Antibiotics are effective against covid 19

a. true
b. false


Ans: b. false

Biology & Microbiology

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What ion is mainly responsible for seawater being slightly alkaline?

a. Carboxylic acid b. Carbon dioxide c. Bicarbonate d. Nitrogen

Biology & Microbiology

The process of moving water through a plant by transpiration works because water molecules stick to each other with

A. adhesion. B. hydrogen bonds. C. osmosis. D. ionic bonds. E. turgor pressure.

Biology & Microbiology

The DNA in a prokaryotic cell is in the ________ region of the cytoplasm

Fill in the blank(s) with correct word

Biology & Microbiology

Neural crest cells:

a. originated in the first chordates. c. migrate during development. b. develop only into neurons. d. produce only beaks in birds.

Biology & Microbiology