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Terms in this set (16)
What is the function of the enzyme primase during DNA replication?
to add an RNA primer to enable replication of DNA
The short DNA segments formed on the discontinuously replicated strand are called
Okazaki fragments
True or False:
After DNA polymerase synthesizes new segments of DNA and the RNA primers are removed, an enzyme called RNA polymerase joins together the newly synthesized segments of DNA on the lagging strand.
False
True or False:
DNA replication results in two identical daughter molecules each consisting of one old (original) strand and one newly
synthesized strand
True
True or False:
The point where separation of the DNA occurs is called the replication fork.
True
What order represents how the components of a DNA nucleotide are connected?
phosphate-sugar-base
What is a characteristic of double-stranded DNA?
-2 nanometers in length
-10 base pairs per turn
-0.34 nanometers per base per
-2 nanometers in width and 10 base pairs per turn
(all of these are correct)
What DNA molecule would be the most stable?
GCGTGCAC
CGCACGTG
True or False:
Double-stranded DNA consists of two antiparallel
strands, meaning that one strand is oriented in the 5´ to 3´ direction, while the other is oriented in the 3´ to 5´ direction.
True
True or False: Asymmetrical spacing of the backbones of the DNA double helix generates major and minor grooves
True
The addition of what key component to an endonuclease gene drive could cause a gene preventing transmission of malaria to not only be inserted into a mosquito and passed on to its offspring but also to be passed on to all future descendants of the offspring?
CRISPR
After a tautomeric shift in adenine,
adenine bonds with cytosine.
A mutation that causes a change in a single nucleotide in DNA
changes the corresponding nucleotide in mRNA, resulting in a different codon.
In a tautomeric shift
hydrogen atoms move to form a base with altered hydrogen bonding properties
True or False:
A mutation that changes a single nucleotide can result in a different amino acid being added into a protein.
True
True or False:
DNA mutations are passed on to daughter cells produced by mitosis.
True
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Verified questions
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How does the inheritance of sex chromosomes result in approximately equal numbers of males and females among the offspring of fruit flies?
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Many of the images in this chapter come from the Hubble Space Telescope. List three of your favourite images from this chapter and write down one sentence describing each.
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What are some advantages and disadvantages of light microscopes and electron microscopes?
Verified answer
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Which statement about prions is true? A. Prions are renegade pieces of RNA that infect cells. B. Prions are infectious proteins. C. Prion-based diseases only affect cows. D. Prions are a newly discovered type of genetic material.
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