What is a group of protons and neutrons in the center of all atoms?

In what way is cytokinesis in plant cells similar to binary fission in a bacterium? All of these choices are correct. A microtubule-like structure constricts the plasma membrane between the two nuclei to separate the daughter cells.

Which statement explains blood pressure? A. Blood pressure is highest in the veins near the heart. B. Blood pressure is highest in the arteries near the heart. C. Blood pressure is highest in the veins farthest away from the heart. D.

Describe a simple nervous system. Give an example of an organism that has a simple nervous system.

In figure 12-5, what is adding base pairs to the strand

What is the function of a vesicle, sometimes called a vacuole, in an animal cell? A. It stores substances such as food, water, and wastes. B. It is the location where photosynthesis occurs. C. It generates all of the energy for the cell. D.

If you look at the sky and see the Moon as a half-circle, what do you expect should be true about the tides that day? A. The low tides will be much lower than usual. B. The high tides will be much higher than usual. C.

What are the five evidences that a chemical change has taken place?

In frogs muscle tissue is usually grouped into large

after the brain receives information from the body's sensory receptors, what is the next step in responding to this information?

What does the endosymbiont theory explain about the origins of plant and animal cell