Q: In mammals, sound waves are collected by the external, cartilaginous part of the ear called the pinna, then travel through the auditory canal and cause vibration of the thin diaphragm called the tympanum or this? Choices: - speaker drum - microphone drum - head drum - ear drum A:
ear drum

Q: Organelles whose membranes are specialized for aerobic respiration are called what? Choices: - vacuoles - mitosis - chloroplasts - mitochondria A:
mitochondria

Q: Q: What makes a complete orbit around the earth once every 29 1/2 days? Choices: - Mars - the Sun - Gemini - the moon A:
A: the moon

Question: Q: What is the term for genes that control the expression of other genes within specific regions of cells in the developing organism? Choices: - expression genes - age genes - data genes - gap genes A:
Answer: gap genes

*Question*
Q: The oceans affect earth's atmosphere and influence its what? Choices: - earthquakes - mountains - volcanoes - climate A:
**Answer**
climate

(Question)
Q: The heart is an organ in which system? Choices: - nervous system - immune system - respiratory system - circulatory system A:
(Answer)
circulatory system