Which of the following organisms first introduced oxygen into Earth's atmosphere?

A. cyanobacteria

B. methanogens

C. early protozoans

D. plants

E. green algae

Cystic fibrosis (CF) is an autosomal recessive disorder involving the secretion of fluids in specific exocrine glands. The genetic defect in CF inclines a person to chronic respiratory infections from a small group of organisms.

Which is a function of genes found in organisms

The process of producing cellular energy without oxygen. anaerobic respiration is a relatively fast reaction and produces 2 atp, which is far fewer than aerobic respiration

What are the primary functions of the pentose phosphate pathway? a) to provide NADPH for reductive biosynthesis and for dealing with oxidative stress b) to provide NADH for reductive biosynthesis and for dealing with oxidative stress c) to provide

Why is the caloric value of some sugar alcohols less than 4 kcal/g? a. They cannot be transported into the mitochondria. b. None remains in the digestive tract. c. They are not completely absorbed. d.

Over many hundreds of years, a stream bed slowly dries up. If the water supply suddenly reappears in the stream bed, which of these is likely to happen?

The nuclear DNA content of a single sperm cell varies depending on the species of the organism.

Which is the best definition of translucent? A. An object that allows some light to pass through. B. An object that blocks all light. C. An object that reflects all light.

Specifically, at night, what sets james' heart "in constant, turbulent" riot?

Energy is relesed from atp when