Answer the following question given this paragraph: The cell membrane consists of two layers of phospholipids. It encloses the cytoplasm and controls what enters and leaves the cell. Q: How many layers of phospholipids does the cell membrane contain? Choices: - four - five - three - two A:
two
Answer the following question given this paragraph: Q: Sexual signaling molecules released by fungi are known as what? Choices: - sperm - hormones - vibrations - pheromones A:
pheromones
Q: Answer the following question given this paragraph: A mutation is a change in the base sequence of DNA or RNA. Environmental causes of mutations are called mutagens. The effects of a mutation depend on the type of mutation and whether it occurs in a gamete or body cell. Q: What is the term for environmental causes of mutations? Choices: - pollutants - catalysts - carcinogens - mutagens A:
A: mutagens
Question: Answer the following question given this paragraph: Plastids are organelles in plant cells that may have various jobs. The main types of plastids are chloroplasts, chromoplasts, and leucoplasts. Q: Chloroplasts, chromoplasts, and leucoplasts are all plastids, organelles found in what kind of cells? Choices: - animal cells - lung cells - heart cells - plant cells A:
Answer: plant cells
*Question*
Answer the following question given this paragraph: Q: Dry soils are relatively unproductive because plants need a sufficient quantity of liquid water to carry out what process? Choices: - contraction - shrinkage - flowering - photosynthesis A:
**Answer**
photosynthesis
(Q).
Answer the following question given this paragraph: Q: What basic plant structure can add support and anchorage? Choices: - lower leaves - soils - stems - roots A:
(A).
roots