The part of an animal cell that serves as barrier between the cell and its environment is the A. nucleus. B. cytoplasm. C. mitochondria. D. cell membrane.

Homeostasis refers to A. the tendency of a cell to maintain a stable internal environment B. the similarity of genetic traits to one another. C. a mixture or solution that is the same throughout D. the effect of natural selection on human evolution

What is the major job of genes to control?

I'm creating products from trees only half of the trees can be used. True Or False?

How do fossils provide evidence of past life

What type of therapy must Maya undergo in order to relearn how to perform certain daily activities?

Mt. Aconcagu is the highest peak of which range

Members of Porifera are diploblastic. Which statement clarifies this? A. They are unsegmented. B. They have a true body cavity. C. They have two germ layers.

In what part of the cell does glycolysis take place

Geological evidence indicates that two landmasses, separated by a deep ocean channel, have been moving apart since 45 million years ago. You are studying a group of organisms that has widespread populations on both of the landmasses.

These are organisms produced with externally introduced genes