The hollow collection of undifferentiated cells that occurs after fertilization and initial mitosis is called a A. morula. B. blastocyst. C. fetus. D. placenta.

Special proteins in living organisms that speed up a chemical reaction but aren't destroyed or used up are called

Explain why classification is always changing.

What processes take place inside human cells

Potential energy and kinetic energy in a sentence

Which tissue is responsible for voluntary and involuntary movement

A student made a model of an ecosystem inside a sealed plastic bottle. She placed soil, rocks, water, plants, and animals inside the bottle. How is the model different from a natural ecosystem? A. The model lacks producers. B.

The scientific name of an organism is formed from what two parts of the organism's classification?

If the women does not get pregnant, then the corpus breaks down and the level of progesterone stars declining. Once progesterone decreases what happens to the lining of the uterus?

The three stages in the development of a full tropical cyclone are formative, mature, and A. dissipation. B. damage. C. tornado. D. tropical cyclone.

A 6-week-old baby had a cerebrospinal fluid shunt placed two days ago. the shunt is not draining the excess csf and the baby is returning to the or for shunt removal and replacement by the same surgeon who placed the original shunt.