Why must an in vitro observation be confirmed in vivo?
O
A. A living thing does not make its own enzymes.
O
B. A test tube is exactly like a living cell.
O
c. Some enzymes behave unnaturally in a test tube.
O
D. Observations in a test tube are easy to make.

In what part of a chloroplast does glucose production occur? a. atp synthase b. photosystem ii c. photosystem d. stroma

Which blood cell spend most of their time in the lymphatic system?

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.