Q: What is the term for a watertight seal between two adjacent animal cells? Choices: - cell membrane - cell wall - placental barrier - tight junction A:
tight junction

Q: The conservation of momentum principle can be applied to systems as different as a comet striking earth and a gas containing huge numbers of atoms and these? Choices: - particles - ions - protons - molecules A:
molecules

Q: Q: Mendel's observation of pea plants also included many crosses that involved multiple traits, which prompted him to formulate the principle of this? Choices: - independent contain - independent texture - dependent evolution - independent assortment A:
A: independent assortment

Question: Q: If particles have enough kinetic energy to completely overcome the force of attraction between them, matter exists as a what? Choices: - liquid - solid - vapor - gas A:
Answer: gas

*Question*
Q: A hot-water heating system uses what type of energy to heat water? Choices: - negative energy - potential energy - atmospheric energy - thermal energy A:
**Answer**
thermal energy

(Q).
Q: An action potential that starts at the axon hillock moves along the axon only toward what? Choices: - nerve endings - ionic pathways - polar synapses - the synaptic terminals A:
(A).
the synaptic terminals