Q: A membrane has what property if it can control what molecules or ions enter or leave the cell? Choices: - indiscreet permeability - impermeability - susceptible permeability - selective permeability A:
selective permeability

Q: Why do adult herbivores in a herd surround their young? Choices: - to protect them from other adult herbivores - to keep them warm on long cold nights - to show them love - to protect them as they are vulnerable to predators A:
to protect them as they are vulnerable to predators

Q: Q: What type of plants do not typically require deep roots or woody stems? Choices: - surface plants - dry plants - bacterial plants - aquatic plants A:
A: aquatic plants

Question: Q: What do covalent bonds give atoms a more stable arrangement of? Choices: - protons - neutrons - cell walls - electrons A:
Answer: electrons

*Question*
Q: What are biological catalysts that speeds up biochemical reactions? Choices: - carbohydrates - hormones - proteins - enzymes A:
**Answer**
enzymes

(Question)
Q: What is the study of the chemical elements necessary for plant growth called? Choices: - photosynthesis - phototropism - plant propagation - plant nutrition A:
(Answer)
plant nutrition