Tor F 1.Where the enzyme RNA polymerase first binds to the DNA - promoter

T or F 2. The on-off switch - Regulator

T or F 3. Codes for specific proteins - Coding genes

T or F 4. A portion of DNA reverses itself. - Translocation

T or F 5. When mutations produce an extra part or copies of chromosomes.
Duplication

T or F 6. Doesn't code for anything, non-coding regions - Intron

T or F 7. Trp Operon - which determine the formation Ind arrangement of body parts in
multicellular organisms, control gene expression by regulation of - DNA translation T or F 8.

T or F 9. Coding regions on DNA or RNA, codes for proteins - Exon

T or F 10. An acquired mutation in a non-gamete cell; mutation exists only in the cell type that
spawns the mutation - Inherited mutation

What two temperature scales do scientists use

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i.e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.