What kind of macromolecule is made from amino acids?

carbohydrate

protein

lipid

nucleic acid

The cell membrane of a red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Since other substances are blocked from coming in, this membrane is called A. perforated. B. semi-permeable. C. non-conductive. D. permeable.

What causes slab pull in Earths crust? a. the movement of salt water near deep ocean beds. b. thick portions of earths crust colliding with thinner portions c. convection currents within earths molten mantle d.

Does the specimen have a depressed body?

Allan pinkerton and j. edgar hoover have what similarities

4. What is the main reason that attitudes are more often revealed in spoken rather than written language? A. In writing, we try to put the "best face" on what we write. B. In spoken language, we are often careless in our use of words. C.

As líquid water freezes, the molecules take up more space than aqua water What do you think would happen if frozen water molecules required less space than liquid water molecules?

Which of the following mineral types can you use radiometric dating on? Homogeneous Inorganic Radioactive Ore

Which type of bond holds a water molecule together

Make a claim that answers the scientific question

A cow eating grass is an example of A) herbivory B) predation C) habitat destruction D) a keystone species