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WorksheetsBioscience final 2022
Total questions: 90
Worksheet time: 1hrs 21mins
A gene is (mark all that apply)
A distinct portion of the somatic cells responsible for increasing hormone concentrations during interphase
A distinct sequence of nucleotides forming part of the chromosome
A unit of heredity transferred from the parents to their offspring
A type of protein
All are functions of proteins, except for ____
Structural - Hair and fingernails
Hormonal - Regulate organ growth and development
Energy - Provide short term energy for cell fermenation
Enzymes - Catalyst for reactions
RNA is different than DNA because ___ (Mark all that apply)
It is a single strand instead of a double helix
It contains Uracil instead of Thymine
It is an nucleic acid instead of an amino acid
It is shorter in length
3' A A A T T T C 5'
The matching strand would read...
RNA contains a nitrogenous base that is different from DNA. What is the name of the nitrogenous base?
Thymine
Uracil
Adenine
Cytosine
Guanine
What is the process called when DNA is made into mRNA.
translation
transcription
transcribe
translate
What type of RNA moves to the ribosome to start protein synthesis?
tRNA
mRNA
rRNA
nRNA
What does tRNA stand for?
transition RNA
transcription RNA
transfer RNA
translation RNA
Which macromolecule is made up of amino acids?
carbohydrate
lipid
nucleic acid
protein
mRNA is read into amino acids during what process?
transcription
transfer
translation
transition
What enzyme transcribes DNA into mRNA?
DNA polymerase
RNA polymerase
helicase
rRNA
What makes up a codon?
2 amino acids
3 amino acids
2 nucleotides
3 nucleotides
Where would you find the anti-codon?
tRNA
mRNA
ribosome
rRNA
The genetic code can help you translate mRNA into ___________?
nucleotides
fatty acids
amino acids
glucose
Why must transcription occur where DNA can be found?
because DNA can't leave
because ribosomes are in the nucleus
because DNA polymerase is found there
because helicase unzips the DNA
A polypeptide is a sequence of ____________________ held together by a ______________ bond.
amino acids; peptide
fatty acids; ionic
proteins; hydrogen
fatty acids; covalent
TRANSCRIBE this DNA sequence: TACGTTACT
AUGCAAUGA
ATGCAATGA
AUGGATUGA
TACGTTACT
GTAGTCA
When using your codon chart, what sequence can you use to find the correct amino acid?
DNA
mRNA
tRNA
Any of these will do
What organelle reads the mRNA and finds the correct amino acid?
DNA
Nucleus
Ribosome
Chloroplast
How many codons: AAU GCG AUG
9
1
3
15
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA
Met-Pro-Ala-Val
Met-Pro-Val
Tyr-Gly-His
Tyr-Gly-Arg-His
What amino acid would be added to the protein being formed during translation if the mRNA codon reads "AUG?"
Phenylalanine
Tyrosine
Leucine
Methionine
Which portion of an amino acid provides its unique characteristics to the amino acid?
alpha carbon
R group
carboxyl group
amino group
Which type of chemical reaction links amino acids when making a protein?
dehydration synthesis
hydrolysis
either of these
neither of these
Which portion of an amino acid is likely to have properties of an acid (release a hydrogen ion)? Think about what you have learned about images of the pH scale.
amino group
alpha carbon
carboxyl group
both the amino group and the carboxyl group
Choose the diagram that represents a quaternary protein structure?
The functions of many proteins is determined by the shape. Shape is often determined by characteristics of amino acids. The _____________ region of a protein would orient towards the watery surface of a cell.
Hydrophobic
Hydrophilic
Charged
The _____________ region of a protein would orient away from the watery surface of a cell.
Hydrophobic
Hydrophilic
Charged
The diagram shows the structure of collagen. Based on the diagram, what is the structural level of collagen?
Primary
Secondary
Tertiary
Quartenary
Based on the diagram, the side chain of amino acid alanine is;
NH2
COOH
H
CH3
Which of the following describes the secondary structure of proteins?
The sequence of amino acids
The α-helix and β-pleated sheet folding
The folding of the polypeptide chain due to the 'R' groups
The joining of different protein molecules to make one big molecule
Tertiary protein structures are mainly maintained by
hydrogen bond
disulfide bridges
covalent bonds
all of the above
What mutation has occurred here?
T-G-A-C-C-A
T-G-A-G-C-A
Substitution
Deletion
Insertion
Frameshift
Which of the following would result in a frameshift mutation?
Insertions only
Substitution only
Deletion only
Insertions and Deletions
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
Substitution
Deletion
Insertion
Inversion
A mutation is defined as:
A change in the cell's structure
Anything that changes in an embryo
Any change in the physical features of a human
A change in the DNA sequence
A substitution mutation that has no effect
on amino acids sequence
Insertion Mutation
Translocation
Silent Mutation
Deletion Mutation
Condition caused by nondisjunction at pair 21 during meiosis.
Individuals have an extra chromosome
at pair 21, or a total of 47 chromosomes.
Also called Trisomy 21.
Cystic Fibrosis
Translocation
Hemophilia
Down Syndrome
A point mutation where DNA adenine (A)
is replaced by thymine (T) resulting in a single amino acid change during translation(affects blood cell
shape and function)
Encephelitis
Hemophilia
Sickle Cell Anemia
Influenza
B = brown fur b = white fur
In the Punnett square, what is the probability for white fur?
0%
25%
50%
75%
B = brown eyes
b = blue eyes
One brother has genotype BB and the other brother has genotype Bb.
Which statement is true about these two brothers?
They have same phenotype and genotype
They have different phenotypes and genotypes
They have same phenotype, but different genotypes
They have different phenotypes, but the same genotype
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any white-flowering plant resulting from this species?
rr
rR
RR
Rr
(Grey fur (G) is dominant over white fur (g) and Black eyes (B) are dominant over red eyes(b))
A male rabbit GGbb crossed with a female rabbit with ggBb.
How many out of 16, have grey fur and red eyes?
4
8
12
16
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
9/16
3/16
1/16
16/16
Objective #13
This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?
Aa
AA
aa
A?
What is the correct genotype for individual I-2?
Cystic Fibrosis is a recessive trait. What is the genotype of Bill?
CC
Cc
cc
Cystic Fibrosis is a recessive trait. If Barbie and Ken have another child, what are the chances that it will not have cystic fibrosis? (Hint: make a punnett square)
0%
25%
50%
75%
100%
Fragile-X syndrome is a recessive sex-linked disorder located on the X chromosome.
Study the pedigree. What is the Genotype of #3?
XHXh
XhXh
XHXH
XHY
A normal human zygote should have _____ chromosomes inside.
46
23
92
64
You are viewing a patients karyotype. You see 23 chromosomes total. There are no homologous chromosomes. Which type of cell are you viewing?
Egg cell
Zygote
Skin cell
White blood cell
