How do multi-cellular organisms develop?
a.
cell differentiation - start from a single cell and as the cells divide they become specialized
b.
they all start as skin cells
c.
organisms have the same number of cells all the time.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?