How do enzyme aid in cell regulation?
a. enzyme speed up reactions that sustain life
b. enzyme slow down reactions that sustain life
c. enzyme speed up reactions to stop life
d. enzyme slow down reactions to stop life

What type of cell is produced after fertilization occurs and the gametes combines ?

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?