Problem: OPTIONS:
- density
- volume
- altitude
- temperature
Q: Q: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? A:
Answer: temperature

Problem:OPTIONS:
- elevation
- equator
- magnitude
- latitude

Q: What is used to measure, in degrees, the distance north or south of the equater? A:
****
A: latitude

Q: A phospholipid is a bond between the glycerol component of a lipid and what else? A:
OPTIONS:
- chlorine molecule
- elemental molecule
- oxygen molecule
- phosphorous molecule
phosphorous molecule

Q: What can be described as a tiny male gametophyte enclosed in a tough capsule? A:
OPTIONS:
- seed
- cell
- dna
- grain of pollen

Answer: grain of pollen

Question: Q: What can be switched off by a protein called the trp repressor? A:
OPTIONS:
- the cytokine
- the chaperone protein
- the genetic precursor
- the operon
Answer: the operon

input: OPTIONS:
- crystals
- eons
- toxins
- ions Now, answer this question: Q: When atoms gain or lose electrons, they can form electrically charged particles called what? A:
A:
output:
ions