In what scenario would a cell want to "ramp up" the expression of a particular gene? a. When a person faces an infection that requires the immune system to rapidly respond with antibodies
b. When a cell differentiates to become a specialized blood cell
c. After an organism consumes a large meal and more digestive enzymes are needed for digestion
d. All of the above

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

What molecules does hemoglobin decay into over time

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.