Multiple Questions Answers

1. The least usable form of energy is
A. a calorie.
B. ATP.
C. food.
D. heat.

2. The energy used by living organisms on Earth comes from
A. the sun.
B. fossil fuels.
C. the oceans.
D. volcanoes.

3. A carbon molecule that has a different arrangement of atoms is known as a/an
A. monomer.
B. peptide.
C. isomer.
D. nucleotide.

4. Single-celled organisms that do not have a membrane-bound nucleus are called
A. prokaryotes.
B. organelles.
C. Golgi bodies.
D. eukaryotes.