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WorksheetsWill Fardig AP Biology Unit 6 Part 1
Total questions: 20
Worksheet time: 7mins
The nitrogenous base adenine pairs with what other base to form a base pair?
(a)
Check all of the correct functions of DNA.
Stores genetic information
Expresses coded information as phenotypes
Activates a receptor
Undergoes precise replication
Before replication, the DNA helix is ________
Unwound
Coiled
Fragmented
Compressed
Semiconservative replication is the process in which a strand of the parental DNA acts as ____________ the new strand
the opposite of
the template for
During synthesis, nucleotides are added to the __ side of the growing new strand
5'
3'
4'
Deoxyadenosine triphosphate, deoxythymidine triphosphate, deoxycytidine triphosphate, and deoxyguanosine triphosphate are collectively referred to as:
deoxyribonucleoside triphosphates
deoxyribonucleic acids
triphosphate groups
base pairs
DNA (a) catalyzes the addition of nucleotides to a new DNA chain.
Eukaryotic chromosomes are what compared to prokaryotic chromosomes? Select all correct answers.
Faster at replicating
Longer
Linear rather than circular
Circular rather than linear
The (a) fork is where the DNA is split into singular chains to allow binding.
What is an Okazaki fragment's purpose?
To help synthesize DNA on the lagging strand
To alter the direction of the replication fork
It is the only way to stop DNA replication
It prevents the DNA from making errors
Which strand of newly synthesized DNA grows away from the replication fork and is made up of Okazaki fragments?
lower strand
lagging strand
complex strand
leading strand
Select all correct information regarding telomeres.
Telomeres are a string of repeated sequences in DNA.
They prevent chromosomes from accidentally attaching.
If missing, they are added by telomerase
All of these are true
Errors in replication can be mended by:
Okazaki fragmentation
Proofreading
Mismatch repair
Removal of the original DNA from the cell
The polymerase chain reaction allows scientists to create several copies of a short DNA sequence in a test tube. Choose all correct ingredients to this reaction.
A sample of DNA to be the template
The four dNTPs
Two short, artificial primers
A DNA polymerase and salts to neutralize the pH
(a) are inherited changes in genes.
Somatic and germline are types of:
Enzymes
Polymerases
Mutations
Organisms
What is the total DNA sequence present in all a cell's chromosomes called?
Genus
DNA strand
Genome
Canonical strand
Genes are transcribed into the (a) , which are in turn translated into the amino acid sequences that make up proteins.
A _______ mutation results from the gain, loss, or substitution of a single nucleotide, and a _______ mutation has extensive changes in the chromosomal structure.
Swap, chromosome
Degenerative, regenerative
Chromosomal, point
Point, chromosomal
___________ are substances that cause mutations, like radiation or certain chemicals.
Mutations
Acids
Mutagens
Particles
