Q: Fatty acids, triglycerides, phospholipids, and steroids are examples of what? A:
OPTIONS:
- tissues
- enzymes
- proteins
- lipids
lipids

Q: What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes? A:
OPTIONS:
- cooling era
- cold age
- freezing point
- ice age

Answer: ice age

Question: Q: What is the layer of electrons that encircle the nucleus at a distinct energy level called? A:
OPTIONS:
- molecular shell
- vortex shell
- ions shell
- electron shell
Answer: electron shell

input with options: Q: If a gas in a closed area experiences increases in pressure and decreases in temperatures, what other attribute of the gas will be affected? A:
OPTIONS:
- gravity
- velocity
- temperature
- volume
output: volume

Q: Q: A sequence of amino acids in single polypeptide is the primary structure for what? A:

OPTIONS:
- lipids
- cells
- dna
- proteins

A: proteins

Q: What are nutrients the body needs in relatively large amounts called? A:
OPTIONS:
- adulterants
- abundances
- vitamins
- macronutrients
macronutrients