CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA

sequence

How can scientists use this technique to control gene expression?

A By activating or deactivating specific genes

B By calculating the number of genes different organisms produce

C By identifying how closely related one individual is to another

D By determining the number of chromosomes in an organism

ker notes

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

69 is the correct math for the amino acids

d. organisms have cells with different shapes and functions.