How are bacterial cells and human cells alike?
a. they allow nutrients through the nuclear membrane.
b. they allow carbon dioxide through the cell wall
c. they allow nutrients through the cell membrane.
d. they allow oxygen through the cell wall.

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d

In cellular biology, what is the definition of the word specialized? te o a. carried across the cell membrane by a specific protein a o b. a structure within a eukaryotic cell that performs a specific function o c. adapted to a specific function or condition es essere beste ser bendere s b tele ee o d. containing unique dna ser eeseen les, e nde este ses see ste submit e