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WorksheetsChapter 16 Molecular Basis For Inheritance
Total questions: 24
Worksheet time: 12mins
DNA segments come from ...
Nitrogenous Base
Unduplicated Chromosomes
Sugar Phosphates
Complementary Pairs
True Or False:
Each gene is a unit of heredity information consisting of a specific DNA sequence
True
False
The Structure of DNA Consists of: Select all that apply
Nitrogenous Base
Fatty Acids
Deoxyribose
Lipids
Phosphate
Stands of DNA are:
Straight
Parallel
Antiparallel
criss-crossed
Strands of DNA are always in the ----- Direction
7' to 5'
and
5' to 7'
5' to 3'
and
3' to 5'
5' to 2'
and
2' to 5'
4' to 3'
and
3' to 4'
You can only add to the bottom of ----
5'
3'
A pairs with G and T pairs with C
True or False?
False
True
A pairs with (T and U) and G pairs with C
True
False
What are Bases held together by?
Deoxyribose
Water Molecules
Phosphate
Hydrogen Bonds
Two Strands are:
Complementary
Decomplementary
Halfed
Duplicates
During Replication, the parent molecule winds up and a new daughter strand is built using base pairing rules.
True or False?
True
False
True or false:
In a semiconservative model, each daughter molecule will have one old strand from a parent molecule and one newly made strand
True
False
What are the three stages of DNA replication
Unwinding, Priming, and Synthesizing
Stretching, Conditioning, and Minimizing
Separation,
Prepping, and Fusing
Categorizing, Synthesizing, Fusing
Unwinding:
Unwinds the DNA strands
Preps single-stranded DNA
Exposes base pairs
Adds complementary bases
Priming:
Prep single-stranded DNA for replicating enzymes
Add complementary bases to create exact copy
Primes the base pairs
Expose base pairs
Synthesizing
Synthesize the sugar phosphate backbone
Add complementary bases to create exact copy
Expose base pairs
Prep single-stranded DNA for replicating enzymes
DNA Strands are Separated, opening up a(n) :
Enzyme
Replication fork
Replication bubble
Replication tube
Replication proceeds in both directions using :
Replication Forks
Replication Bubbles
Replication Coils
Topoisomerase
DNA Replication involves:
Direction base pairing, exposing base pairs and cutting of DNA strands
Complementary base pairing of opposing strands, DNA nucleotides, and exposing base pairs
DNA strand winding in the complementary direction, replication forks, replication spoons
Short stretch of specific DNA nucleotides, replication forks, and replication bubbles
Eukaryotes use Multiple --- and --- for each linear chromosome
ITRs and Bubbles
ORIs and Bubbles
PIDs and Bubbles
WORs and Bubbles
What are the three major enzymes/proteins required for DNA Replication (Specifically Unwinding)
Helicase, Single-stranded binding, and Topoisomerase
DNA Ligase, Helicase, DNA Primase
Polymerase I, Polymerase II, and Primase
Topoisomerase, Polymerase I, and Polymerase II
Topoisomerase:
Creates new DNA
prevents re-pairing
Relieves strain, breaks, swivels, and rejoins DNA strands
Untwists the double helix at the replication fork
Single-stranded binding proteins:
Untwists and binds to the double helix on the replication fork
Binds to and stabilizes single-stranded DNA and prevents repairing
Repairs DNA and prevents binding to single-stranded DNA
Relieves strain on the binding section of DNA
Topoisomerase:
Tops off the DNA strands with RNA primase and rejoins the DNA strands
Relieves strain, and breaks, swivels, and rejoins DNA strands
Relieves parental strands, and binds to Helicase
Rides the replication form trail and joins DNA strands
