ch 6 part 1reviews

Question 1

Why is DNA so valuable?

Answer 1

1-all living oragnism carry DNA in almost every cell in their body
2-every person’s DNA is unique except for identical twin
3-DNA is also exist in the things we leave behind like hair , blood , dead skin cells , saliva

Question 2

the discovery of DNA structure was by ___________

Answer 2

james weston
francis in 1953

Question 3

the structure of DNA is

Answer 3

X-ray crystallography data
and chargaff’s rule or complimentary base-pairing

Question 4

review of DNA structure

Answer 4

1-douple helix held togather by hydrogen bond
2-complimentary base-pairing
2-monomers are nucleotide
4-sugar phosphate backbone
5-strands are anti paralle

Question 5

unit of DNA ________and types

Answer 5

nucleotide , phosphate group
sugar , nitrogen-containg base

Question 6

necleotide types :

Answer 6

c and p=sugar phosphate back bone
c and o=sugar
N and c =nitrogen-contating base

Question 7

inforamtion flows in cell or central dogoma of biology

Answer 7

DNA-RNA-protein
or
DNA transcription RNA translation protein

Question 8

genome

Answer 8

an organism’s complete set of dna
can found in nucleus
in eukaryotic cell

Question 9

chromosome

Answer 9

Linear or circular piece of DNA with specific base pair sequences
-contain many gene
linear in eukaryotic
circular in prokaryotic

Question 10

gene

Answer 10

sequence of nucleotide on chromosome
thar carriers info for RNA OR PROTEIN
-very improtant for protein synthesize

Question 11

human have __________chromosome from father and mother
total is _______

Answer 11

23
46

Question 12

alleles is
type ?

ali ill z

alleles

Answer 12

different form or version of gene that code for the same trait
orange and yellow and purple

Question 13

trait

Answer 13

any characteristic of an organism like eye color or height or flower color

Question 14

DNA does not code for protein is ___________
and noncoding region is __________

Answer 14

noncoding DNA
intron

Question 15

How do genes work?

Answer 15

1-the gene is storehouse for information
needs
-transcription
-translation

Question 16

transcripton versus translation

Answer 16

transcription ?
the gene sequense is copied from DNA to go between mRNA
translation ?
teh gene sequences is now encoded in mRNA which direct the production of protein