What structure is a bilayer, surrounds the cell, and controls what enters and what leaves the cell? Question 1 options:

Endoplasmic reticulum

Cytoplasm

Cell wall

Cell membrane

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

Which gas prevents the spread of fire and extinguishes it? is a type of compressed gas that prevents the spread of fire and extinguishes it.

Dna in the nucleus carries the genetic code for making proteins in ribosomes. the diagram shows a model of dna. which part of the dna molecule codes for the amino acid sequence in the protein? a) sugar b) phosphate c) deoxyribosed) nitrogen bases