Q: Amplification that occurs in which cells often requires signal transduction pathways involving second messengers? A:

OPTIONS:
- axons
- optic nerves
- catayst cells
- sensory receptor

Answer: sensory receptor

Problem: OPTIONS:
- ion
- quark
- neutron
- electron
Q: Q: Because atoms are always electrically neutral, for each added proton, one of what is also added? A:
Answer: electron

Problem:OPTIONS:
- depth
- amount of life
- amount of light
- amount of salt

Q: How are aquatic biomes often classified? A:
****
A: amount of salt

Q: The waves on the strings of musical instruments are transverseso are electromagnetic waves, such as visible light. sound waves in air and water are this? A:
OPTIONS:
- symmetrical
- hydroelectric
- horizontal
- longitudinal
longitudinal

Q: A channel protein is an example of what type of protein? A:
OPTIONS:
- component proteins
- choice proteins
- hemoglobin protein
- transport proteins

Answer: transport proteins

input with options: Q: Like mitochondria, plastids contain their own what? A:
OPTIONS:
- riboflavin
- bacteria
- molecule
- dna
output:
dna