Nicotine is
a. tar.
b. the addictive substance in marijuana.
c. the addictive substance in tobacco.
d. present even in coffee.

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6300 nucleotides. its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.if the yellow mottle virus begins its infection of a cell by using its genome as mrna, which of the following would you expect to be able to measure? a) replication rateb) transcription ratec) translation rated) formation of new transcription factors

1. risk factors (1 point) a) refers to being in good shape or physical condition b)the process and function of the body c) social needs, social behaviors, and social problems d)traits that increase the possibility of developing an illness or diseases

Which organisms are consumers in an ecosystem? choose all answers that are correct. 1 grass 2 bacteria 3 lion 4 wolf