Question 5
Ultraviolet (UV) radiation can damage DNA by breaking weak bonds. Which of the following best explains how this occurs?
A
UV radiation disrupts the double helix structure by breaking the covalent bonds between the nitrogenous base pairs,
B
UV radiation disrupts the double helix structure to breaking the hydrogen bonds between the nitrogenous base pairs.
С
UV radiation is able to break DNA strands in two by breaking covalent bonds between the sugar phosphate backbone molecules
D
UV radiation is able to break DNA strands in two by breaking hydrogen bonds between the sugar phosphate bachoone molecules
Answers
UV radiation disrupts the double helix structure to breaking the hydrogen bonds between the nitrogenous base pairs.
WHAT IS DNA?
DNA, known as deoxyribonucleic acid, is one of the two types of nucleic acids. It is a long double helical structure found in the nucleus of cells.STRUCTURE OF THE DNA:
The DNA is made up of nucleotides. Each nucleotide consists of three components namely: phosphate group, nitrogenous bases and a pentose sugar. In the DNA molecule, the four nitrogenous bases are Adenine, Cytosine, Guanine and Thymine. Adenine and Thymine bonds together while Cytosine and Guanine bonds together. Weak hydrogen bonds holds one nitrogenous base to its complementary base.Therefore, an ultraviolet radiation can damage the DNA structure by breaking the hydrogen bonds between the nitrogenous base pairs.
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Related Questions
give two roles of nucleus in the cell
Answers
Explanation:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
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Minerals:
A. were once living
B. are man-made materials
C. are only found in rocks
D. naturally grow into crystals
Answers
The main focus of conservation is to
a. wisely manage natural resources for people's use
b. set aside land and protect it from human activities
c. demand government action to pass environmental laws
d. prevent wild species from becoming endangered
e. limit society's demand for natural resources
Answers
Answer:
A.) Wisely manage natural resources for people's use
Explanation:
Because conservation is like preservation but conservation wants to seek sustainable use of nature by humans for activities such as, hunting, logging, and even mining.
can someone anser this pls
Answers
Answer:
I'm really just guessing but, you should try (B)
Which statement best contrasts the urinary and excretory systems?
The urinary system is involuntary, while the excretory system is voluntary.
The urinary system includes the bladder, while the excretory system does not.
The urinary system filters waste for nutrients, while the excretory system has no filter.
The urinary system removes liquid waste, while the excretory system removes solid waste.
Answers
Answer:
The urinary system removes liquid waste, while the excretory system removes solid waste.
Explanation:
just got it right
Sunspots are dark areas on the surface the Sun.They mark strong magnetic fields, and more sunspots indicate that the Sun is more active and is releasing more energy. The following graph presents the average daily number of sunspots from 1900 through
1944. Each data point is the average for one month.
Answers
5. Explain why a washing machine would be considered technology.
Answers
Answer:
It's technology because it does a certain service for you with less time wasted if you did it by hand.
Explanation:
Hormones in the bloodstream are what
Answers
Answer:
chemical messenger.
Explanation:
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Answer:
CHEMICAL MESSENGER
Explanation:
did the Assignment
A scientist conducted one trial of experiment and got unexpected results. How can the scientist increase confidence in the results? A). by repeating the experiment several times B). by charging the experimental procedure C). by asking other scientists what they think about the results D). by modifying the results so they are close to the expected results
Answers
Answer:
The answer is A by repeating the experiment several times
Explanation:
i did it on edu
By repeating an experiment many times, scientists increase confidence in the results. So, the correct option is (A).
What is an experiment?An experiment is defined as a procedure which is carried out to support or disprove a hypothesis. It determines the efficacy or potential of something previously unusable. It provides insight into cause and effect by demonstrating what results when a particular factor is manipulated.
An experiment is defined as a type of empirical study that involves manipulation of an independent variable, measurement of a dependent variable, and control of extraneous variables. This extraneous variable is any variable other than the independent and dependent variables.
The best approach when conducting a scientific experiment is to test repeatedly and make sure the experiment can be repeated.
Thus, by repeating an experiment many times, scientists increase confidence in the results. So, the correct option is (A).
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Which organelle transports material throughout the cell?
Cell Membrane
O Endoplasmic Reticulum
O Mitochdadria
O Lysosome
o
Answers
Answer:
lysosome I think.
Explanation:
All organisms have organs and/or body systems. True or False?
Answers
Need help emt class
Answers
Answer:
3.
ExplaA bilateral hip replacement, for instance, replaces both hip bones in the same operation.
4. The immune system
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What is the smallest or most specific level of organisation you and your neighbors all have in common
Answers
Answer: The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
Explanation:
Answer:population
Explanation: I got it right
is algae plant- like, fungus- like, or animal- like
Answers
Answer:
plant-like
Explanation:
Even though It's a living thing, it contains structures within their cells that resemble plant cell structure. For example, it has chlorophyll.
what are several defenses that keep pathogens from getting inside the body
Answers
Answer:
The body has two lines of natural defense to protect against infection. The first are physical barriers, such as the skin, body secretions and mucous membranes. The second line of defense is the immune system. Specialized immune cells coordinate and execute attacks to kill germs that make it past the body's physical barriers.
Drag each tile to the correct box .
Water evaporates from a lake. Arrange the next steps of the water cycle in the correct order.
Water vapor condenses to form clouds.
Water flows down mountains and hills.
Water falls as rain, snow, and sleet.
Water joins streams or forms groundwater.
Answers
The water cycle is the processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
Sequence of water cycleWater vapor condenses to form clouds. water falls as rain, snow, and sleet. water joins streams or forms ground water. water flows down mountains and hills.Learn more about water cycle here: https://brainly.com/question/282587
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list 3 pros to cow calf operation
Answers
Answer:
1. Profits
2. Forage is cheaper than feed
3. low death loss
Organisms need _____ to conduct essential life activities
Answers
Answer:
The correct answer is energy. Other organisms are not necessary, just like offsprings since there are many organisms that never have offsprings. Light is also not necessary with numerous organisms, especially those like the ones that live deep in the sea where light never reaches. Some form of energy is necessary for everyone.
why do some leaves decompose faster than others?
Answers
Answer:
Over time, decaying leaves release carbon back into the atmosphere as carbon dioxide. In general, the scientists found that plant composition determines the range of rates, and that as temperatures increase, all plant matter decays faster.
Hope this helps. Have a good day!
where does a photosystem occur in a plant cell
Answers
Answer:
thylakoid membrane
Explanation:
yes
THIS IS A PSYCHOLOGY QUESTION.
Describe the major theories for the purpose of sleep. Why do we sleep?
Answers
How do macrophages fight pathogens?
Answers
Answer:
They release antibodies to protect the body. They produce antigens to protect the body. They break down the pathogens that enter the body. They respond to a future invasion of the same type of pathogen.
Explanation:
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- pun
Answer:
With Acid
Explanation:
The first line of immune defense against invading pathogens like bacteria are macrophages, immune cells that engulf every foreign object that crosses their way. After enclosing it in intracellular membrane vesicles, a process called phagocytosis, macrophages kill their prey with acid.
Coastal wetlands are ecologically important because they do all of which of the following a. reduce the impact of storms coming inland b. harbor a low level of biodiversity c. help to destroy nutrients d. provide important habitats for only terrestrial species e. repel large aquatic reptiles
Answers
Answer: The answer is e
Explanation:
What role do decomposers play in the food chain?
Answers
Which renewable resource is not at risk?
1) Fisheries
2) Petroleum
3) Forest
4) Ground water
Answers
Answer:
C, forest.
Explanation:
Trees are easily replaceable. With the other options, those are all considered non renewable energy sources. Those take millions of years to form. When we look at fishery, people can do what's called "overfishing" when they fish too much faster than fish can reproduce. Therefore making C your best answer choice.
Name a pH level that amylase and
alkaline phosphatase share?
Answers
how can you change a sedimentary rock into an igneous rock?
Answers
Answer:
The answer is A. Melting and Cooling.
Explanation:
How do decomposers obtain their food?
A. hunting and killing prey for food
B. changing carbon dioxide and water
into food
C. absorbing food from dead organisms
D. producing food from oxygen and
sunlight
Answers
Answer:
C. absorbing food from dead organisms
Explanation:
Leigh investigates the color of shells deposited on a beach as she walks along the coastline. She wants to know whether this variation in color is due to chance or if it is significant. Data was collected over a minimum 20 cm long region at four sites along the beach coast. Shells were categorized into four different shades, 1 being the lightest and 4 being the darkest. What is the mean number of shells collected?
Answers
Answer:
the data is QUANTITAVE because it includes data that are NUMBERS a CHI-SQUARE will be used ...
Explanation:
right on edge for ap bio
Answer:
slide 4 is 4.79
Explanation:
correct on ap bio edge 2021
Is bacteria the smallest living thing on earth
Answers
Answer:
Image result for Is bacteria the smallest living thing on earth
Mycoplasma genitalium, a parasitic bacterium which lives in the primate bladder, waste disposal organs, genital, and respiratory tracts, is thought to be the smallest known organism capable of independent growth and reproduction.
Explanation: hope this helped