What molecules both enters AND exits the Kreb's cycle?

a. acetyl Co-A

b. citric acid

c. pyruvic acid

d. oxaloacetate

How does optimal foraging improve an individual's overall fitness?

In most plants, which organs are adapted to capture sunlight for photosynthesis?

Which process copies DNA quickly without using bacteria?

In ostriches, there are 2 types: ones that run fast and those that run slowly. The fast birds can reach up to 40 miles an hour. Jackals love to eat ostrich, and they can reach speeds of up to 35-40 miles per hour.

A dog breeder decides that he wants to make his chihuahuas smaller. He calls another breeder and borrows their smallest female chihuahua to breed with his smallest male chihuahua. This is an example of A. natural selection. B. selective breeding. C.

What is the polymer of lipids

Suppose you look at a microscope to look at a cell from leaf of a tree. What structure will you see that would not be found in a cell from you finger nail. A) cilia B) mitochondria C) ribosomes D) chloroplasts

Write the equation for photosynthesis using both words and the chemical symbols

Which change shows a tenfold increase in concentration of H + ions?

Which valve prevents backflow into the right atrium?