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

Which type of nerve carries commands to the skeletal muscles? a. Neuromuscular nerves b. Cardiac nerves c. Visceral nerves d. Somatic nerves e. Synaptic nerves

Imagine an artificial cell made with a selectively permeable membrane that allows water to pass through but does not allow sugar to pass.

What is the Study of the interactions that take place among organisms and their environment

Explain how the galápagos finches may have evolved?!

What did Walter Sutton discover about the relationship between alleles and chromosomes?

If there is a glucose shortage, how does the body produce energy?

Greg is testing two different types of fertilizer on his tomato plants to find the best conditions for his summer garden. He isadding different amounts of fertilizers to his plants. Then he is recording how much the plants grow for 4 weeks.

A species of birds entered a nonnative habitat and is now considered an invasive species. Whats the most likely effect his species will have on native species that share the same reaources?

In which element and a fragmented landscape would you expect to find the largest number of species

2) What is a gene?