Q: In single-celled organisms, plasma membrane extensions, such as whip-like flagella or brush-like cilia, aid in what? Choices: - sensation - sound - pressure - movement A:
movement

Q: What is the process of the fusion of a sperm and an egg called? Choices: - Sperm - embryo - stimulation - fertilization A:
fertilization

Q: Q: What occurs when the bronchioles swell and the muscles around the bronchioles contract? Choices: - bronchitis - nausea - allergies - asthma A:
A: asthma

Question: Q: What do we call structures that have lost their use through evolution, which serve as important evidence of evolution? Choices: - extinct - adaptative - primordial - vestigial A:
Answer: vestigial

*Question*
Q: Muscles are composed mostly of cells called what? Choices: - muscle organelles - muscle filament - muscle polymers - muscle fibers A:
**Answer**
muscle fibers

*Question*
Q: When you heat a pot of water on a stove top, energy moves from the pot to its metal handle by what process? Choices: - induction - convection - thermal radiation - conduction A:
**Answer**
conduction