Q: When do end portions of two nonsister chromatids trade places? Choices: - never - at night - during respiration - at every crossover A:
at every crossover

Q: What serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body? Choices: - cells immune system - super immune system - immense immune system - innate immune system A:
innate immune system

Q: Q: Activities that can reduce the effects of what condition include exercises to keep the blood and lymph flowing through affected areas? Choices: - anemia - inflammation - asthma - edema A:
A: edema

Question: Q: What type of environment is maintained in homeostasis? Choices: - fluid internal - noisy internal - stable external - constant internal A:
Answer: constant internal

*Question*
Q: The most powerful or influential individual in a group is sometimes called what? Choices: - superior - gamma - beta - dominant A:
**Answer**
dominant

*Question*
Q: The word antibiotic comes from the greek anti, meaning "against," and bios, meaning this? Choices: - bacteria - germ - virus - life A:
**Answer**
life