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

Answer 1

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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Question 5Ultraviolet (UV) Radiation Can Damage DNA By Breaking Weak Bonds. Which Of The Following Best

Related Questions

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.

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:

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.

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The organs of the urinary system are organs of excretion—they ... filter the blood to remove metabolic wastes and then modify the resulting fluid, which al- ... But in the kidneys, we find an unusual capillary bed that is both...

Answer:

The urinary system removes liquid waste, while the excretory system removes solid waste.

Explanation:

just got it right

What role do decomposers play in the food chain?

Answers

Answer: Decomposers breaks down dead or decaying organisms. Decomposers carry out the natural nutrients to decomposition
They break down dead organisms

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

So why didn’t you look the answer up
Look the answer up on google trust me you will find what your looking for

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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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.

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

Water 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

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 cycle

Water 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.

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where does a photosystem occur in a plant cell

Answers

Answer:

thylakoid membrane

Explanation:

yes

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:

hope i helped?? :))

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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.

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

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

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.

I’m gonna go with D. Prevent wild species from becoming endangered . Because most of the time, the purpose of conservation is to protect species from extinction.

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.

is it ok if u could try and help me with my last question if so thx


Hormones in the bloodstream are what

Answers

Answer:

chemical messenger.

Explanation:

yw loves!!!!

Answer:

CHEMICAL MESSENGER

Explanation:

did the Assignment

Minerals:

A. were once living
B. are man-made materials
C. are only found in rocks
D. naturally grow into crystals​

Answers

Common Minerals are only found in rocks

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

can someone anser this pls

Answers

Answer:

I'm really just guessing but, you should try (B)

(B) a gamate containing a complete set of the genetic information

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:

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!

All organisms have organs and/or body systems. True or False?

Answers

Yes it is very True (:

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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Name a pH level that amylase and
alkaline phosphatase share?

Answers

A ph level that amylase and alkaline are phosphatase share is chlorine

list 3 pros to cow calf operation

Answers

Answer:

1. Profits

2. Forage is cheaper than feed

3. low death loss

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

C.absorbing food from dead organisms .

Answer:

C. absorbing food from dead organisms

Explanation:

Which organelle transports material throughout the cell?
Cell Membrane
O Endoplasmic Reticulum
O Mitochdadria
O Lysosome
o

Answers

Answer:

lysosome I think.

Explanation:

THIS IS A PSYCHOLOGY QUESTION.
Describe the major theories for the purpose of sleep. Why do we sleep?

Answers

sleep serves a number of different physiological and psychological purposes including cleaning up brain toxins and consolidating information into memory.

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.

how can you change a sedimentary rock into an igneous rock?

Answers

Answer:

The answer is A. Melting and Cooling.

Explanation:

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