Lipids commonly contain fatty acids. What are the two parts of a fatty acid? Check the correct answers below. amino group

long chain of carbon and hydrogen

carboxyl group

R group

nucleotide

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

The distribution of related animals and plants across the world