In addition to being light and abundant, the capacity of the carbon atom to form _____ bond(s) makes it critical for the chemistry of life.

A) 1
B) 2
C) 3
D) 4


Answer: D) 4

Biology & Microbiology

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A certain cell type has existed in the blood and tissue of its vertebrate host's immune system for over twenty years. One day, it recognizes a newly arrived antigen and binds to it, subsequently triggering a secondary immune response in the body

Which of the following cell types most accurately describes this cell? A) plasma cell B) thyroid cell C) memory cell D) macrophage

Biology & Microbiology

Which of the following is NOT a characteristic of plants

A. Eukaryotic Cells B. Cell walls containing Chitin C. Multicellular structure D. Chloropyll

Biology & Microbiology

What Gram reaction do you expect from acid-fast bacteria?

a. Gram-positive b. Gram-negative c. Both gram-positive and gram-negative d. Can't tell

Biology & Microbiology

Dialysis tubing serves as a __________ for the osmosis experiment.

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

Biology & Microbiology