If the sugar concentration in a cell is 4% and the concentration in the cell's environment is 2%, how can the cell obtain more sugar?
A. Sugar can diffuse straight through the phospholipid bilayer.
B. Sugar can undergo facilitated diffusion through a channel protein and no
energy is required.
C. The cell CANNOT obtain any more sugar. It is doomed,
D. The cell must use active transport to pump the sugar in. Energy is
required.

Which of the following systems in absorbing oxygen and releases carbon dioxide

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.

Need , i need a scenario of: artificial selectionmutationnon random mating