Question 1

Repair enzymes _____.​

Accepted Answer

The answer of Repair enzymes _____.​
...

Question 2

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-along with Watson and Crick, received the Nobel Prize for his contribution to the discovery of DNA's structure

Accepted Answer

Maurice Wilkins, along with James Watson and Francis Crick, was awarded the Nobel Prize in Physiology or Medicine in 1962 for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material. Wilkins' contribution was crucial, especially his work with X-ray diffraction images of DNA, which helped in determining the double helix structure of DNA.

Question 3

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-built the first precise model of DNA that implied its method of replication

Accepted Answer

Watson and Crick are credited with building the first precise model of DNA, which suggested a mechanism for its replication. This discovery was pivotal in understanding the molecular basis of inheritance.

Question 4

What is the spontaneous process by which the base pairing occurs between two strands of DNA?

Accepted Answer

Hybridization is the process where two complementary strands of DNA (or RNA) recognize each other and form hydrogen bonds, leading to the formation of a double-stranded molecule. This is a spontaneous process driven by the base pairing rules (A pairs with T, and G pairs with C in DNA).

Question 5

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-used X-ray diffraction technology to determine that phosphate groups are located on the outside of the DNA molecule and bases on the inside

Accepted Answer

Rosalind Franklin's work with X-ray diffraction technology was crucial in determining the structure of DNA, including the placement of phosphate groups on the outside and bases on the inside.

Question 6

When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them), what happens to the DNA?

Accepted Answer

The dimerization of adjacent bases, such as thymine dimers, causes a kink in the DNA strand, which can interfere with DNA polymerase activity during replication.

Question 7

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-first described DNA as a substance rich in nitrogen and phosphorus

Accepted Answer

Friedrich Miescher was the first to identify DNA as a distinct molecule rich in nitrogen and phosphorus in 1869, laying the groundwork for the future understanding of its role in genetics.

Question 8

What is the effect of ionizing radiation on DNA?

Accepted Answer

Ionizing radiation can cause breaks in the DNA molecule, leading to single or double-strand breaks.

Question 9

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-discovered that the sequence of DNA differs in different organisms

Accepted Answer

Erwin Chargaff discovered that the sequence of DNA differs in different organisms, leading to the formulation of Chargaff's rules, which state that DNA from any cell of all organisms should have a 1:1 ratio of pyrimidine and purine bases.

Question 10

Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that arose from _____.

Accepted Answer

Rosalind Franklin's extensive exposure to X-rays during her research, particularly her groundbreaking work on the structure of DNA, is believed to have contributed to the development of her ovarian cancer. X-rays are a form of ionizing radiation that can cause DNA damage, leading to mutations that may result in cancer.

Question 11

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.​

Accepted Answer

During DNA replication, if an error is made and not caught by DNA polymerase, only the newly synthesized daughter strand will contain the mutation. The original (template) strand remains unchanged. DNA polymerase has proofreading capabilities, but errors can occasionally slip through, leading to mutations in the daughter strand.

Question 12

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-this researcher's work suggested that DNA was double helix

Accepted Answer

The answer of Matching
Answer the following questions by matching each...

Question 13

Order the steps of somatic cell nuclear transfer.
-​Step 1

Accepted Answer

The answer of Order the steps of somatic cell nuclear...

Question 14

Short, single strands of nucleotides that serve as attachment points for DNA polymerase are called _____.

Accepted Answer

Primers are short, single strands of nucleotides that serve as attachment points for DNA polymerase, initiating the synthesis of a new DNA strand.

Question 15

Which enzyme links nucleotides into a new stand of DNA?​

Accepted Answer

DNA polymerase is the enzyme responsible for synthesizing new strands of DNA by adding nucleotides to an existing chain.

Question 16

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-discovered that the amount of adenine in a DNA molecule was equal to the amount of thymine

Accepted Answer

Chargaff's rules state that DNA from any cell of any organisms should have a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine.

Question 17

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-proved that DNA, not protein, transmits a full complement of hereditary information

Accepted Answer

Hershey and Chase conducted experiments with bacteriophages (viruses that infect bacteria) and radioactive labeling to demonstrate that DNA, not protein, is the genetic material passed from the viruses to the bacteria, thus carrying the hereditary information.

Question 18

Hybridization of DNA is _____ and is driven entirely by _____.

Accepted Answer

Hybridization of DNA is a spontaneous process that occurs due to hydrogen bonding between complementary nucleotide bases. This process does not require ATP or any other form of energy input, as the formation of hydrogen bonds releases enough energy to drive the hybridization.

Question 19

The addition of methyl groups to DNA by chemicals in tobacco can cause DNA to _____.​

Accepted Answer

The addition of methyl groups to DNA, a process known as DNA methylation, can lead to mutations. This is because methylation can alter gene expression and potentially cause errors during DNA replication or repair, leading to mutations. Tobacco chemicals are known to induce such methylation changes, contributing to the mutagenic effects of tobacco.

Question 20

Chemicals in tobacco smoke can cause _____.​

Accepted Answer

The answer of Chemicals in tobacco smoke can cause _____.​
...

Quiz 7: Dna Structure and Function

Repair enzymes _____.

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -along with Watson and Crick, received the Nobel Prize for his contribution to the discovery of DNA's structure

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -built the first precise model of DNA that implied its method of replication

What is the spontaneous process by which the base pairing occurs between two strands of DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -used X-ray diffraction technology to determine that phosphate groups are located on the outside of the DNA molecule and bases on the inside

When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them) , what happens to the DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -first described DNA as a substance rich in nitrogen and phosphorus

What is the effect of ionizing radiation on DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -discovered that the sequence of DNA differs in different organisms

Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that arose from _____.

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -this researcher's work suggested that DNA was double helix

Order the steps of somatic cell nuclear transfer. -Step 1

Short, single strands of nucleotides that serve as attachment points for DNA polymerase are called _____.

Which enzyme links nucleotides into a new stand of DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -discovered that the amount of adenine in a DNA molecule was equal to the amount of thymine

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -proved that DNA, not protein, transmits a full complement of hereditary information

Hybridization of DNA is _ and is driven entirely by _.

The addition of methyl groups to DNA by chemicals in tobacco can cause DNA to _____.

Chemicals in tobacco smoke can cause _____.

Quiz 7: Dna Structure and Function

Repair enzymes _____.​

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -along with Watson and Crick, received the Nobel Prize for his contribution to the discovery of DNA's structure

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -built the first precise model of DNA that implied its method of replication

What is the spontaneous process by which the base pairing occurs between two strands of DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -used X-ray diffraction technology to determine that phosphate groups are located on the outside of the DNA molecule and bases on the inside

When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them) , what happens to the DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -first described DNA as a substance rich in nitrogen and phosphorus

What is the effect of ionizing radiation on DNA?

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -discovered that the sequence of DNA differs in different organisms

Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that arose from _____.

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.​

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -this researcher's work suggested that DNA was double helix

Order the steps of somatic cell nuclear transfer. -​Step 1

Short, single strands of nucleotides that serve as attachment points for DNA polymerase are called _____.

Which enzyme links nucleotides into a new stand of DNA?​

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -discovered that the amount of adenine in a DNA molecule was equal to the amount of thymine

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -proved that DNA, not protein, transmits a full complement of hereditary information

Hybridization of DNA is _____ and is driven entirely by _____.

The addition of methyl groups to DNA by chemicals in tobacco can cause DNA to _____.​

Chemicals in tobacco smoke can cause _____.​

Repair enzymes _____.

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.

Order the steps of somatic cell nuclear transfer. -Step 1

Which enzyme links nucleotides into a new stand of DNA?

Hybridization of DNA is _ and is driven entirely by _.

The addition of methyl groups to DNA by chemicals in tobacco can cause DNA to _____.

Chemicals in tobacco smoke can cause _____.