Cell membrane

What will be an ideal response?


is two layers of lipids: cholesterol makes it more stable : controls what enters and leaves the cell ;

Biology & Microbiology

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Which of the following is not a component of a nucleotide?

A. a five-carbon sugar B. one or more phosphate groups C. a nitrogen-containing base D. a carboxyl group E. a five-carbon sugar, one or more phosphate groups, a nitrogen-containing base and a carboxyl group are all components of nucleotides.

Biology & Microbiology

The innermost membrane layer surrounding the brain and spinal column is the:

a. dura mater. b. meninges. c. arachnoid. d. pia mater.

Biology & Microbiology

Plants convert bicarbonate to carbon dioxide using the enzyme carbonic ________

Fill in the blank(s) with correct word

Biology & Microbiology

One of the important inherited defects in the second line of immune defense is a condition called chronic granulomatous disease. What is this disease, and how is it caused?

What will be an ideal response?

Biology & Microbiology