Worksheetsunit 5 and unit 6
Total questions: 23
Worksheet time: 25mins
what enzyme unzips and unwinds?
(a)
Reorder the following in order for protein synthesis
mRNA is made in the nucleus from a DNA template (transcription)
mRNA leaves the nucleus into the cytoplasm
mRNA attaches to a ribosome with the help of a an rRNA
mRNA is translated into a strand of amino acids with the help of tRNA
A protein/polypeptide chain is created
Made during transcription because DNA is too big and fragile to leave the nucleus
mRNA
Used to attach the anticodon
tRNA
enzyme that adds nucleotides to the template strand to make a complimentary strand
DNA polymerase
unzip and unwinds the DNA
Helicase
enzyme used to transcribe DNA to RNA
RNA polymerase
which of the following creates haploid (1n=23 chromosomes) cells
Meiosis
Mitosis
Protein synthesis
DNA replication
which of the following are diploid (2n) cells?
Gametes
Somatic cells
different forms of genes
ex: eye color gene has blue and brown
Alleles
small section of DNA that codes for a protein which determines a trait
ex: eye color
genes
ALWAYS expressed (mendelian genetics) and represented by capital letters
dominant allele
only expressed when no dominant allele is present. represented by lowercase letters
recessive allele
2 alleles that an organism has for a specific trait
genotype
Normal: ATG ATT GCC
Mutated: ATG GTT GCC
Point mutation
Normal: ATG ATT GCC
Mutated: ATG TTG CC
Deletion
Normal: ATG ATT GCC
Mutated: ATG AAT TGC C
Insertion
What is the result of DNA replication?
2 identical pieces of DNA fully conservative
2 identical pieces of DNA semi-conservative
3 identical DNA conservative
2 different pieces of DNA
What part of the DNA is responsible for how you look?
(a)
TRANSLATE the following DNA:
ATG GCC TTT
(a)
Where is DNA located in a eukaryotic cell?
Chloroplast
Mitochondria
Nucleus
Ribosome
write the COMPLEMENTARY STRAND for the following DNA strand:
ATT GCC AAA
(a)
DNA is what kind of biomolecule
Carbohydrate
Nucleic Acid
Protein
Lipid
Who took the first x-ray picture of DNA
Rosalind Franklin
Francis Crick
James Watson
What elements are nucleic acid made of?
(a)
which is homozygous? select all that apply
AA
Aa
aa
Which of following ends with 4 haploid cells?
Meiosis
Mitosis
Gametes are
cancer cells
sex cells
body cells
organelles
Which part of meiosis do chromosomes recombine?
(a)
Mixing/Blending of alleles; heterozygous genotype creates a mix
Incomplete dominance
Both alleles are show up together when heterozygous!
Both are dominant
Co-Dominance
only found on x-chromosomes: tend to affect males more
Sex-linked
Dominant always takes over!
Mendelian genetics
Dominant is not always going to take over
Non-mendelian genetics
which one leads to more diversity?
Mitosis
Meiosis
Mutations can only be passed down to offspring if the mutation is-
in somatic cells
in the bloodstream
in the brain
in gamete cells
adenine and guanine
Purines
cytosine and thymine/uracil
Pyramidines
Adenine
complimentary to Uracil
guanine
complimentary to cytosine
