What provides an explanation for the presence of mitochondria and chloroplasts in present day cells?

What reactions make up the calvin cycle?

A lion eating a zebra is an example of what ... a) habait destruction b) predation c) a keystone species or d) herbivory

What does the wild-type lacI protein do? a. Acts as a repressor (inhibits transcription from the lac operon). b. Acts as an inducer (induces transcription from the lac operon). c. Recruits RNA polymerase to the lac promoter. d.

Abby meditates with great concentration for 20 minutes, twice a day. what type of meditation is she engaging in?

Which of the following statements is true? Animal cells cannot produce food. Both plant and animal cells can produce food. Some animal cells can produce food. Animal cells have chloroplasts.

Which of these activities is not considered to be a marine ecosystem threat? overfishing. ocean pollution. coastal development. ocean alkalinity?

What is another common intramuscular injection site for 2mL or less of a drug? a Ventrogluteal b. Vastus Lateralis c Deltoid d Infraspinatus

Which element acts as a hydrogen acceptor during aerobic respiration? (A) hydrogen (B) carbon (C) oxygen (D) nitrogen (E) phosphorus Can someone explain this one for me?

How do bacteria and viruses differ in the ways they affect cells in the body?

What does high water potential mean?