WorksheetsUnit 3 Revision
Total questions: 53
Worksheet time: 34mins
Some lizards tails can be 'broken off' by predators allowing the lizard to escape. This gives these lizards can advantage. This type of tail is a variation and a...
Speciation
Adaptation
Sexually Selected Trait
Genetic Drift
An antibiotic is applied to a colony of bacteria. Most of the bacteria die, but a few survive. The surviving bacteria have genes that make them resistant to the antibiotic. What is most likely going to happen in the future.
Bacteria will soon go extinct
The frequency of the antibiotic resistant bacteria will not change
The bacteria population will evolve a thicker cell membrane
There will be more antibiotic-resistant bacteria in the next generation
Which of the following statements about a population of hawks follows Darwin's idea of natural selection...
Larger hawks tend to have more offspring
Hawks better adapted to the environment tend to leave more offspring
Hawks with variation tend to survive longer
Survival of an individual hawk is more valued than its reproduction
What type of gene mutation has occurred here?
Normal: AGA-TTC-ATA-GCG
Mutant: AGA-TTC-AAT-AGC-G
point
One nucleotide base is changed so only one amino acid is affected.
Substitution Mutation
Point Mutation
Frameshift Mutation
Inverse Mutation
A frameshift mutation where a nucleotide base
is removed from the DNA sequence.
Deletion Mutation
Substitution Mutation
Translocation
Silent Mutation
Part of a chromosome is repeated
Gene Mutation
Translocation Mutation
Nondisjunction Mutation
Duplication Mutation
Part of one chromosome is transported and attached
to a non-homologous chromosome
Inversion Mutation
Translocation Mutation
Duplication Mutation
Point Mutation
What is the role of Chlorophyll in photosynthesis?
It breaks the hydrogen bonds in water molecules
It converts light energy into chemical energy contained in bonds
It releases absorbs green light waves and reflects all of the other ones
it provides energy for the light dependent reactions
What colour of light is best absorbed by plants?
Red and blue
Green and Yellow
Red and green
Blue and green
Only green
How does the calvin cycle differ from the light reactions?
The calvin cycle takes place in the thylakoid
The calvin cycle takes place in the stroma
The calvin cycle takes place in the mitochondria
The calvin cycle produces ATP to be used in the light dependent reactions
What are the outputs of the Light Dependent stage of Photosynthesis?
NADP+
ADP
Pi
Oxygen
NADPH
ADP
Pi
Carbon Dioxide
NADPH
ATP
Carbon Dioxide
NADPH
ATP
Oxygen
Plants that open their stomata at night to take in Carbon Dioxide and store that for use during the day are known as:
C3 Plants
C4 Plants
CAM Plants
Rubisco is:
An Enzyme used in the light independent stage
An Enzyme used in the light dependant stage
A co-enzyme used in the light independent stage
A co-enzyme used in the light dependent stage
Why is the transcription of structural genes of the trp operon turned off in the presence of tryptophan?
Tryptophan is the repressor that binds to the operator, preventing transcription.
The structural genes are used to make tryptophan, which would not be needed if tryptophan is available.
Tryptophan has no effect on the transcription of the structural genes.
Tryptophan RNA polymerase from finding the promoter of the trp operon, preventing structural gene transcription.
Which of the following statements regarding the trp operon is true?
The operator region produces the mRNA that codes for the repressor.
The regulatory gene is not transcribed in the presence of the repressor.
Repressor proteins are inactivated by the presence of the repressor. .
The trp operon is always activated unless deactivated by a repressor
All plasmids have an origin of replication which is necessary for
DNA to be duplicated
DNA to be transcribed into RNA
DNA to be inserted easily
DNA to be cut open
This image is representing a successful bacterial transformation
True
False
Ampicillin (antibiotic) is used in the plates to
isolate and select for only the bacteria that have been successfully transformed
give bacteria energy to grow
act as a trigger to turn on the expression of the gene of interest
give the bacteria a new trait (such as fluorescence or insulin production)
When fragments of DNA are connected from different sources, this creates:
A plasmid
A clone
Recombinant DNA
Fragmented DNA
What type of cut is this photo?
Blunt
sticky
What is the role of Cas9?
Glue sections of DNA together.
Target mutated genes.
Change the sequence or order of DNA bases.
Cut DNA at specific locations.
What is the difference between Somatic Modifications and Germline Modifications?
Somatic deals with genes in non-reproductive cells and Germline deals with reproductive cells.
Germline deals with genes in non-reproductive cells and Somatic deals with reproductive cells.
Both deal with only reproductive cells.
Both deal with only somatic cells which are not reproductive cells.
Why do bacteria have CRISPR? Check all that apply.
To be able to remember which viruses they have been infected with
To be able to edit virus DNA
To cut apart virus DNA thereby stopping the virus infection
To be able to edit their own DNA
A PAM is
a 15-20 bp sequence snipped from a viral genome that serves as a tracer DNA to locate viruses later
a 3 bp sequence that adjacent to viral DNA in a CRISPR array
a girl's name popular in the 1960s
where the DNA is cut
What is the role of the guide RNA?
It helps the cell repair the DNA
ensures that the Cas9 enzyme cuts at the right point in the genome
Recognizes PAM sequences and opens up the DNA
makes a cut across both strands of the DNA
The following sequence is a known GENE MUTATION that geneticists would like to remove. What would be the guide RNA they need to build into a CRISPR-Cas9 enzyme?
TTA CCG
AAU GGC
AAT GGC
TTA CCG
GCC ATT
What type of RNA is used as a GPS of sorts, to find or locate specific genes?
mRNA
gRNA
tRNA
rRNA
Which of the following describes the direction the template strand is read?
5' to 3'
3' to 5'
N terminus to C terminus
C terminus to N terminus
Which of the following describes the correct mRNA sequence from the template strand of 5' - CGGTTA - 3'?
5' - GCCAAT - 3'
5' - GCCAAU - 3'
5' - UAACCG - 3'
5' - TAACCG - 3'
Which answer shows the sections of a gene in the correct order?
Promoter, coding sequence, terminator
Coding sequence, promoter, terminator
Terminator, coding sequence, promoter
Promoter, terminator, coding sequence
The immune response that defends against antigens in body fluids, such as blood and lymph, is called
inflammatory response
interferons
humoral response
cell mediate response
Are the main weapons of the humoral immune response.
T cells
memory B cells
antibodies
antigens
These cells hep to activate or program certain cells in Humoral AND Cell Mediated Response
helper T cell
mast cell
cytotoxic T cell
plasma cells
______ describes the movement of leukocytes toward an injured site due to the presence of certain chemical substances.
chemotaxis
opsonization
anaphylaxis
agglutination
