An increase in the calcium ion level in the sarcoplasm starts the sliding of the thin filaments. when the level of calcium ions declines, sliding stops.

a. True

b. False

The marine flatworms (polycladids) are the smallest of the free-living flatworms sometimes reaching lengths of 15 centimeters true or false?

Bread rises due to the action of fungi called molds. true or false

What gives an atom or ion the most stability A. a valence shell filled with electrons B. a valence shell incompletely filled with electrons.

The rigth and left iliac regions are also caled therigt and left inguinal area

Outside the nucleus, what is one structure where genetic material is stored in an animal cell?

Why are fats important to organisms?

What are the four types of biomolecules?

Plants appear green because they do not absorb the green wavelengths of light what happens to those green light waves when they hit the plant

The geographical processes that shape earths features today

Researchers working with Rob Dunn set out to collect and identify microbes found in belly buttons. When the researchers began identifying these microbes, they found that the microbes represented a wide range of metabolic activities.