Which statement BEST describes the difference between chemotherapy and biological therapy? Biological therapy is all natural therapy, where chemotherapy uses harsh toxins.
Biological therapy is involves radiation; chemotherapy involves drugs.
Chemotherapy targets the cell directly; biological therapy tries to help the immune system so it will attack the cancer cells.
Chemotherapy is given over an extended period of time, where biological therapy is given only once.

Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.

Name three things that show evidence of evolution. write one sentence for each, explaining why it demonstrates evidence. (9 points)

One brief stimulus of a skeletal muscle may result in a single isolated contractile event, which is called a twitch. one twitch can generate max tension in a muscle. are these statements true or false?