Chapter 8: DNA and RNA

Question 1

what year was DNA discovered?

Answer 1

1947

Question 2

how many chromosomes does a human have in each cell

Answer 2

23 pairs.

Question 3

nucleotide

Answer 3

the basic monomer of the complex nucleic acid polymer

Question 4

DNA bases

Answer 4

Adenine with Thymine Cytosine with Guanine

Question 5

Steps in DNA replication

Answer 5

1. DNA helicase unzips 2. Polymerase attaches new bases 3. DNA repair enzymes check the strand 4. DNA ligase connects everything

Question 6

codon

Answer 6

every three letters in RNA

Question 7

anti-codon

Answer 7

tells the process to stop

Question 8

somatic cells

Answer 8

cells that make up the body

Question 9

gametes

Answer 9

sex cells sperm in men eggs in women

Question 10

inversions

Answer 10

section of a chromosome is broken and becomes reattached but in reverse order

Question 11

translocations

Answer 11

a section of a chromosome is broken out of one chromosome and reattached into a different chromosome

Question 12

Duplication

Answer 12

a section of a chromosome is replicated and inserted right next to the original

Question 13

Deletion

Answer 13

aberrations result when a broken piece of chromosome becomes lost before it can be re-attached