Q: Q: What phenomenon, crucial for evolution, creates new genetic variation in a gene pool and is how all new alleles first arise? Read this paragraph and choose the correct option from the provided answers: Mutation creates new genetic variation in a gene pool. It is how all new alleles first arise. In sexually reproducing species, the mutations that matter for evolution are those that occur in gametes. Only these mutations can be passed to offspring. For any given gene, the chance of a mutation occurring in a given gamete is very low. Thus, mutations alone do not have much effect on allele frequencies. However, mutations provide the genetic variation needed for other forces of evolution to act. Choices: - radiation - natural selection - adaptation - mutation A:
A: mutation

Q: Q: Dinitrophenol (dnp) is an uncoupler that makes the inner mitochondrial membrane leaky to protons. it was used until 1938 as a what? Read this paragraph and choose the correct option from the provided answers: ART CONNECTION QUESTIONS 1. Figure 7.11 Dinitrophenol (DNP) is an uncoupler that makes the inner mitochondrial membrane leaky to protons. It was used until 1938 as a weight-loss drug. What effect would you expect DNP to have on the change in pH across the inner mitochondrial membrane? Why do you think this might be an effective weight-loss drug? 2. Figure 7.12 Cyanide inhibits cytochrome c oxidase, a component of the electron transport chain. If cyanide poisoning occurs, would you expect the pH of the. Choices: - immune system booster - bone density drug - sleep loss drug - weight loss drug A:
A: weight loss drug

Q: Q: What happens to the wire in a fuse if it's current rating is exceed? Read this paragraph and choose the correct option from the provided answers: The image above is one type of electrical fuse. This fuse has a specially designed wire inside glass housing. The wire inside the glass is made of a particular metal and with a particular thickness to give the wire an exact resistance. This resistance will allow passage of normal current plus a marginal percentage more. If, however, the current exceeds the allowed value, the wire in the fuse will heat and melt, thus interrupting current flow through the circuit. The fuse wire is placed in the glass housing and a fuse mount to insulate the melting wire from its surroundings. Any unintended increase in current, such as short circuits, overloading, mismatched loads, or device failure will cause the fuse to burn out protecting the other parts of the circuit from overheating and further damage. Choices: - disappears - ignites - sparks - it melts A:
A: it melts

Q: Q: What structure, containing many internal membranes, is the site of photosynthesis? Read this paragraph and choose the correct option from the provided answers: The chloroplast is the site of photosynthesis. Part of the photosynthesis reactions occur in an internal membrane within the organelle. The chloroplast contains many of these internal membranes, making photosynthesis very efficient. These internal membranes stack on top of each other, just like a stack of pancakes. Choices: - ribosome - mitochondria - genome - chloroplast A:
A: chloroplast