Which is most likely the first invention that changed society so much?

a. the airplane

b. the steam engine

c. the car

d. the train

Explain why the several different types of microscopes are all necessary.

Why does tuberculosis spread so readily in prisons?

If a solution has a pH of 10, the solution is said to be ...

What dose a scientist do if a hypothesis is supported? what dose he or she do is not supported

How does the nucleus and ribosomes work together to carry out homeostasis?

How many chromosomes do humans have?

Pairing of homologous chromosomes in prophase of meiosis I appears to be critical for proper alignment, crossing over, and subsequent separation. This pairing is facilitated by the sharing of sequence homology between homologous chromosomes.

What does "leeward" mean?

Which lipid acts as a chemical messenger? a. adipose tissue b. cholesterol c. testosterone d. beeswax

The degradation of alanine yields pyruvate and the degradation of leucine yields acetyl coa. can the degradation of each of these amino acids directly replenish the pool of tca intermediates? explain why or why not.