Q: What do you call the energy that must be overcome in order for a chemical reaction to occur, or the minimum energy required to start a chemical reaction? Choices: - expression energy - phase energy - kinetic energy - activation energy A:
activation energy

Q: Some membrane proteins that actively transport ions contribute to what? Choices: - organism potential - protein potential - cellular potential - membrane potential A:
membrane potential

Q: Q: Red algae and green algae are the closest relatives of what? Choices: - transfer plants - arctic plants - water plants - land plants A:
A: land plants

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

*Question*
Q: The reaction of calcium oxide with carbon dioxide forms what? Choices: - nitrogen carbonate - carbon monoxide - nitrogen - calcium carbonate A:
**Answer**
calcium carbonate

(Question)
Q: What is an advantage of brightly colored fruits? Choices: - make pretty paintings - dyes for clothing - warning of poisons - attract animals to disperse their seeds A:
(Answer)
attract animals to disperse their seeds