Homework Answers
ANSWER
A) TRUE.
* Melanin is a effective absorbent of light and it can dissipate most of the UV radiation
which is absorbed due to this characterstics melanin help to protect skin cells from UV rays
and prevent damage of DNA of skin cells which leads to cancer.
* But over exposure of UV rays result in oxidization of melanin and DNA damage occur in the
skin cells leads to skin cancer.(eg; Malignant melanoma)
Add Answer to:
DNA damage that may lead to skin cancer occurs when ultraviolet rays oxidize melanin. nswers A B A True B False
Most of the damage to DNA caused by x-rays occurs when they interact with water, knocking...
Most of the damage to DNA caused by x-rays occurs when they interact with water, knocking one of the electrons loose and creating a free radical. The energy required to do this is approximately 300 kJ/mole. If a stray photon is moving at the speed of light, estimate the wavelength(s) of electromagnetic radiation needed to create a free radical.
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
Label the following as either proto-oncogene, oncogene or tumor suppressor 3. A gene that initiates apoptosis when DNA damage occurs a. b. A gene that initiates the transition from G1 to S phase A ge...
Label the following as either proto-oncogene, oncogene or tumor suppressor 3. A gene that initiates apoptosis when DNA damage occurs a. b. A gene that initiates the transition from G1 to S phase A gene that inhibits the transition from G1 to S phase c. d. A gene that promotes cell growth, combined with a hyperactive promoter How would methylation of the promoter of the gene in question 3c affect the cell? Be specific using what you know about the...
Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53...
Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53 protein C.Rb protein phosphorylating D. Improper replication of DNA during synthesis E. faulty DNA repair Mark for Review What's This?
All the answers please 63. Thrombocytopenia may lead to petecchiae or ecchymosis a. True b. False...
All
the answers please
63. Thrombocytopenia may lead to petecchiae or ecchymosis a. True b. False 64. Sickled cells development is a function of replacing a non-polar amino acid with a polar amino acid at the 6th position of the beta amino acid chain. a. True b. False 65. Lymphocytes that mature in the thymus are responsible for humoral immunity a. True b. False 66. Natural killer cells do not require prior exposure to be effective a. True b. False...
QUESTION 90 Candidiasis often occurs following antibiotic therapy for bacterial infections, OA) TRUE B) FALSE QUESTION...
QUESTION 90 Candidiasis often occurs following antibiotic therapy for bacterial infections, OA) TRUE B) FALSE QUESTION 91 Infection with Pediculus humanus is called scabies. A) TRUE OB) FALSE QUESTION 92 Blue-green pus is characteristic of Pseudomonas wound infections OA) TRUE OB) FALSE QUESTION 93 The normal flora of the skin is predominantly gram-negative rods A) TRUE OB) FALSE QUESTION 94 Acanthamoeba infections are usually transmitted via insects OA) TRUE OB) FALSE QUESTION 95 The varicella-zoster virus is the causative agent...
Each of the following statements about the structure of DNA may be either true or false....
Each of the following statements about the structure of DNA may be either true or false. Choose the appropriate answer for each of these statements. Bonding between adenine and thymine on opposite strands involves two hydrogen bonds. Nitrogenous bases are located on the outside of the double helix: phosphates are located towards the middle of the double helix. Bonding between guanine and cytosine on opposite strands involves three hydrogen bonds. DNA and RNA are structurally different due to the difference...
manufacturing course ASAP PLZ! 10- Higher MRR may result in tool failure a- True b- False...
manufacturing course
ASAP PLZ!
10- Higher MRR may result in tool failure a- True b- False 11- At the end of non-destructive tests a- there are no damage to the components b- parts are elastically deformed c- parts are permanently deformed 12- Radiography cannot be performed on non-metals a- True b- False 13- Eddy current inspection cannot be performed on non-metals a- True - False 14- One of the major guideline in design for manufacturing is to increase the number...
Question: When sugar dissolves a chemical reaction occurs. This statement is I. True II. False III....
Question: When sugar dissolves a chemical reaction occurs. This statement is I. True II. False III. When Sugar dissolves, the sugar molecules break apart to form ions. IV. when sugar dissolves, dipole-dipole forces are formed between the water and sugar molecules. a) I and III b) I and IV C) II and III D) II and IV
RESTRICTION DIGEST ANALYSIS QUESTIONS(true or yes = A: false or no = b) 1. Larger DNA...
RESTRICTION DIGEST ANALYSIS QUESTIONS(true or yes = A: false or no = b) 1. Larger DNA fragments appear near the bottom of the gel. 2. Larger DNA fragments move more rapidly through the gel. D ONA that has many restriction sites for a certain endonuclease will be cut into more fragmets than DNA with fewer restriction sites. 4. Cutting DNA with many different endonucleases will result in more DNA fragments. 5. Restriction enzymes all recognize the same base sequence when...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
Label the following as either proto-oncogene, oncogene or tumor suppressor 3. A gene that initiates apoptosis when DNA damage occurs a. b. A gene that initiates the transition from G1 to S phase A gene that inhibits the transition from G1 to S phase c. d. A gene that promotes cell growth, combined with a hyperactive promoter How would methylation of the promoter of the gene in question 3c affect the cell? Be specific using what you know about the...
Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53 protein C.Rb protein phosphorylating D. Improper replication of DNA during synthesis E. faulty DNA repair Mark for Review What's This?
All
the answers please
63. Thrombocytopenia may lead to petecchiae or ecchymosis a. True b. False 64. Sickled cells development is a function of replacing a non-polar amino acid with a polar amino acid at the 6th position of the beta amino acid chain. a. True b. False 65. Lymphocytes that mature in the thymus are responsible for humoral immunity a. True b. False 66. Natural killer cells do not require prior exposure to be effective a. True b. False...
QUESTION 90 Candidiasis often occurs following antibiotic therapy for bacterial infections, OA) TRUE B) FALSE QUESTION 91 Infection with Pediculus humanus is called scabies. A) TRUE OB) FALSE QUESTION 92 Blue-green pus is characteristic of Pseudomonas wound infections OA) TRUE OB) FALSE QUESTION 93 The normal flora of the skin is predominantly gram-negative rods A) TRUE OB) FALSE QUESTION 94 Acanthamoeba infections are usually transmitted via insects OA) TRUE OB) FALSE QUESTION 95 The varicella-zoster virus is the causative agent...
Each of the following statements about the structure of DNA may be either true or false. Choose the appropriate answer for each of these statements. Bonding between adenine and thymine on opposite strands involves two hydrogen bonds. Nitrogenous bases are located on the outside of the double helix: phosphates are located towards the middle of the double helix. Bonding between guanine and cytosine on opposite strands involves three hydrogen bonds. DNA and RNA are structurally different due to the difference...
manufacturing course
ASAP PLZ!
10- Higher MRR may result in tool failure a- True b- False 11- At the end of non-destructive tests a- there are no damage to the components b- parts are elastically deformed c- parts are permanently deformed 12- Radiography cannot be performed on non-metals a- True b- False 13- Eddy current inspection cannot be performed on non-metals a- True - False 14- One of the major guideline in design for manufacturing is to increase the number...
RESTRICTION DIGEST ANALYSIS QUESTIONS(true or yes = A: false or no = b) 1. Larger DNA fragments appear near the bottom of the gel. 2. Larger DNA fragments move more rapidly through the gel. D ONA that has many restriction sites for a certain endonuclease will be cut into more fragmets than DNA with fewer restriction sites. 4. Cutting DNA with many different endonucleases will result in more DNA fragments. 5. Restriction enzymes all recognize the same base sequence when...
Most questions answered within 3 hours.
-
Let X be the amount of damage a particular company pays out (in
$) for a...
asked 25 minutes ago -
1. Choose the answer that is closest to the definition of a
significance level
a) If...
asked 1 hour ago -
When light is refracted, on what does the angle of refraction
depend? Select all that apply....
asked 1 hour ago -
A (726) g mass is hung on a spring. As a result the spring
stretches (16.5)...
asked 2 hours ago -
SOLUTION NOT NEEDED ONLY NEED THE ANSWERS, HOMEWORK IS DUE IN 30
MINUTES.
4)Which of the...
asked 3 hours ago -
You will select one card from a standard deck of 52 cards. What
is the probability...
asked 3 hours ago -
50% of the volume of a boat, sailing down the Mississippi (where
the water density ρ...
asked 3 hours ago -
Calculate how many moles of ions are in 1.4 L of 2.9 M KNO2
(aq). Remember...
asked 4 hours ago -
Experiment:
In the experiment: Mix together 74 g. (92 ml.) of n-butyl
alcohol and 120 g....
asked 5 hours ago -
This Python module will be menu driven
and use conditions to check user input in order...
asked 5 hours ago -
Tip Calculator App
For this project, you will create a tip calculator Android
app. The user...
asked 6 hours ago -
A first order chemical reaction has an energy of activation of
90.0 kJ/mol and a rate...
asked 7 hours ago