WorksheetsSTAAR Biology Category 2 Review
Total questions: 40
Worksheet time: 45mins
Put each label in the correct location in the Venn Diagram. (Make sure to put answers in DESCENDING number order.)
Explain two main differences between DNA and RNA. (Must use complete sentences.)
Which part is the building block of DNA?
Which part is responsible for the genetic diversity of life?
Which part is the backbone of DNA?
DNA
Holds the genetic information of all living things.
mRNA
Carry protein information from the DNA in a cell's nucleus to the cell's cytoplasm.
rRNA
Major constituent of ribosomes.
tRNA
Brings the amino acids and places them in the correct potsition to create the desired protein
When DNA splits into single strands to act as a template for a new strand of complementary DNA, it is called (a) . The process by which DNA is copied to (b) , which carries the information needed for protein synthesis is called (c) . The mRNA formed in transcription is transported out of the (d) , into the cytoplasm, to the ribosome (the cell's protein synthesis factory). With the help of tRNA the protein chain is assembled in a process known as (e) .
What type of RNA is shown?
mRNA
tRNA
rRNA
A nucleotide from DNA and RNA are shown in the image, what is the difference between them regarding the sugars involved?
DNA and RNA have the same sugar
DNA has a ribose sugar while RNA has a deoxyribose sugar
DNA and RNA have no sugar
DNA has a deoxyribose sugar while RNA has a ribose sugar
Which statement correctly describes the sequence of bases found in DNA?
It changes every time it replicates
It is exactly the same in all organisms
It directly controls the synthesis of starch within a cell
It determines the characteristics that will be inherited
Which processes occurs in the nucleus? (two answers)
DNA replication
transcription
translation
digestion
If a portion of a mRNA molecule contains the base sequence A-A-U, the corresponding tRNA base sequence is
T-T-C
G-G-T
U-U-A
A-A-U
The picture shows a nucleotide. What could the green box represent?
adenine
phosphate
deoxyribose
ribose
What is Phe in this picture represent?
the codon
the anticodon
a polypeptide
an amino acid
What molecule is represented by #6 in the picture?
tRNA
mRNA
DNA
protein
In a portion of a gene, the nitrogenous base sequence is T-C-G-A-A-T. Which base sequence would normally be found bonded to this section of the gene?
A-G-C-T-T-A
U-G-C-A-A-U
A-C-G-T-A-A
A-C-G-U-U-A
Use your codon chart to match the DNA sequence GAA to the correct amino acid
VAL
TYR
LEU
PHE
Use your codon chart to match the DNA sequence TGA to the correct amino acid.
Thr
Ala
Val
Gly
Use your codon chart to find the amino acid that codes for AGU
Tyr
Gly
Arg
Ser
The Himalayan rabbit's habitat has cold, snowy winters and mild summers. The body is typically covered in white fur except for the nose, feet, tail, and ears, which are covered in black fur.
A scientist shaved an area of white fur on the back of a Himalayan rabbit and placed an ice pack over the shaved area . The shaved area grew black fur.
Which of these best explains why the hair that grew back where the Ice pack was placed was black and not white?
The white hair mutated to black hair as the rabbit's body temperature decreased.
The coat color changed from white to black with the age of the rabbit.
The genes for black hair were activated by specific temperatures.
White hair only grows during certain times of the year.
CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism . Using this technique scientists can add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?
By determining the number of chromosomes in an organism
By identifying how closely related one individual is to another
By calculating the number of genes different organisms produce
By activating or deactivating specific genes
What type of mutation is this?
Substitution
Deletion
Insertion
According to the Punnett square in basic mendelian genetics: B reprepsents the dominant gene for blue feathers and b represents the recessive gene for red feathers. Two heterozygous birds have one offspring. What percent chance does it have for red feathers?
0%
25%
75%
100%
Study the Punnett Square. What is the probability of a dominant trait showing up?
0%
25%
50%
100%
Study the Punnett Square. What is the probability of having heterozygous dominant traits?
0%
25%
50%
75%
Study the Punnett Square. What is the probability of having a recessive trait?
100%
50%
25%
0%
What is the final result in meiosis?
Two new daughter cells with the exact same chromosomes.
Four new cells, each with half the chromosomes.
Four new cells, each with twice the chromosomes.
HOW MANY CHROMOSOMES DO HUMAN GAMETES HAVE?
46
23
47
22
Red is incompletely dominant to white in snapdragons. Which cross would result in 100% pink flowers?
RR x rr
rr x rr
Rr x Rr
RR x RR
Mama Suga has a blood type of AB. What are Papa Daichi's possible blood types if their son has a blood type of B? Select all that applies.
A
B
AB
O
What type of non-mendelian inheritance does the picture show?
codominance
multiple alleles
incomplete dominance
polygenic inheritance
What type of inheritance pattern does the diagram represent?
Incomplete Dominance
Codominance
Multiple Alleles
Polygenic Inheritance
What is the mode of inheritance shown here?
Recessive because it "skips" a generation
Dominant because it shows up in every generation
If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?
HH
Hh
hh
Colorblindness is more common in males than in females because......
fathers pass the allele for colorblindness to their sons only
the allele for colorblindness is located on the Y chromosome
the allele for colorblindness is recessive and located on the X chromosome
males who are colorblind have two copies of the allele for colorblindness
