Q: What genetic unit is formed when the dna double helix wraps around proteins and tightly coils a number of times? Choices: - atom - gene - neutron - chromosome A:
chromosome

Q: Photoreceptors in each ocellus receive light only through the opening where there are none of which cells? Choices: - clear - opqaue - secreted - pigmented A:
pigmented

Q: Q: Fitness and natural selection are parts of what theory that might describe how organisms change over time? Choices: - dessication - gravity - implementation - evolution A:
A: evolution

Question: Q: What process would be impossible without some variation in the inherited traits of organisms within a species? Choices: - environmental selection - darwin's selection - characteristic selection - natural selection A:
Answer: natural selection

*Question*
Q: Producers, primary consumers, higher-level consumers, and decomposers are levels in what? Choices: - food model - energy chain - food flowchart - food chain A:
**Answer**
food chain

(Question)
Q: Nucleic acids are polymers made of monomers called what? Choices: - loops - carotenoids - peptides - nucleotides A:
(Answer)
nucleotides