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
Differentiate between biotic and abiotic factors affecting organisms in their environments?
Answers
Answer:
Biotic- Living things
Abiotic- Non- Living
Explanation:
Abiotic- example would be sunlight, water, air (oxygen)
Biotic- examples would be other organisms or other things living
Describe the stage of the cell cycle that takes place before mitosis.
The _____ stage occurs before mitosis. In this stage extra sub-______ structures are produced.
Answers
The interphase stage occurs before mitosis. In this stage, extra sub-phases like G1, S, and G2 are produced various proteins necessary for divisions.
What do you mean by Cell cycle?The Cell cycle may be defined as the process a cell goes through each time it divides.
Interphase is the initial stage of any cell cycle which is the interval between the end of one mitotic or meiotic division and the beginning of another. It is the longest phase of the cell cycle as compared to the mitotic phase.
Therefore, the interphase stage occurs before mitosis. In this stage, extra sub-phases like G1, S, and G2 are produced various proteins necessary for divisions.
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Answer: The Growth stage occurs before mitosis. In this stage extra sub-cellular structures are produced.
Which equation has water as a reactant in chemical reaction?
Answers
Answer:
Na + H2O NaOH + H2 is the ans
help asap 20 pts ill mark brainliest
Using the examples in the lesson, label each interaction as mutualism, commensalism, parasitism, competition, or predation.
Trees in a forest
Cheetah and gazelle
Cattle egret and grazing cattle
Butterfly on a flower
Bees pollinate flowers
Oxpecker and buffalo
Owl hunting mice
Bucks fighting for territory
Mushrooms on a tree trunk
Spider in a web
Bird feeders in a backyard
Mosquito sucking blood
Answers
predation
commensalism
mutualism
mutualism
mutualism
predation
competition
mutualism
commensalism
commensalism (?)
parasitism
Can drinking Gatorade make you a baller like Michael Jordan, claim evidence and reasoning
Answers
Answer:
although Gatorade has electro lights and other substances this is false you need to train be able to train yourself so you can shoot hoops like Jordan
Explanation:
Answer:
Sorryy, MJ is the G.O.A.T, and in my opinion, Gatorade gives you energy.. not Michael Jordan's super powers ;)
Explanation:
how is the hammer structure related to its function
Answers
Answer:
hope it helps you..
Explanation:
Structure to Function Relationship:
The length of the handle allows for a swing that increases the speed of the head of the hammer. The head is composed of hard metal. When the head hits the nail, the metal transmits the force of the swinging hammer into the nail, driving it into the wood .
A very thin slice is removed from a peanut and treated with Sudan III, another indicator that turns red in the presence of a lipid. Then the same slice is treated with Biurets reagent. When the peanut is examined under a microscope, little patches of red and blue-violet can be seen. What conclusions can be drawn from this examination? Why would you expect this result?
Answers
Answer:
Little patches
Explanation:
blue- violet
Little patches and blue- violet.
What is Little patches?Sudan III is a bis(azo) chemical that has a 4-[(2 methylphenyl)diazenyl]phenyldiazenyl group replaced at position 1 of the 2-naphthol ring. a fat-soluble dye that can stain some protein-bound lipids in paraffin sections and is mostly used to show triglycerides in frozen sections.
It functions as a histology dye, a fluorochrome, and a carcinogen. It belongs to the class of azobenzenes, is a bis(azo) chemical, and is a naphthol. It is similar to a 2-naphthol in terms of function.
"It certainly does not mean, as many writers have assumed, that the lipid in question belongs to the carbohydrate-containing glycolipid (cerebroside) group.
Therefore, Little patches and blue- violet.
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4. In biology making the next generation is known as
Answers
Answer: Reproduction. One must reproduce in order to continue the generational line.
Answer:
The answer to this is inbreeding I know this becasue im in biology rn and we just talked about it a few days ago. Hope this helps.
Explanation:
description of anaphase 2
Answers
What exactly happens in Anaphase II?
Centromeres separateSister chromatids turn into single chromosomesThe single chromosomes move to opposite sides of the cellTwo chromatids in every chromosome move to opposite sides of the spindleBest of Luck!
What makes it easy to spot a scientific law?
-Labeled by Theory with a capital "t"
-A mathematical formula
-Graphs of a lot of data
Answers
Answer:
I think it's (Graphs of a lot of data) but I'm not sure
Hydra falls under what kingdom
Answers
Answer:
Animalia
Explanation:
classify each of the following as a stimulus or a response
a._____ the recess bell ringing in an elementary school
b._____ your mouth watering at the sight of food on a plate
c._____ a sudden drop in air temperature
d._____ a flu virus entering your body
e._____ getting “butterflies” in your stomach before giving a speech
Answers
Answer:
A- Stimulus
B- response
C- Stimulus
D- Stimulus
E- Response
Explanation:
Stimuli are what cause responses.
What happened to the compasses when a current flowed through the wire?
Answers
How does water's polarity help it to dissolve so many substances?
Answers
Answer:
When a polar substance is put in water, the positive ends of its molecules are attracted to the negative ends of the water molecules, and vice versa
Explanation:
id if this helped but
Which wavelength of electromagnetic radiation carries the most energy?
a. infrared
b. FM radio
c. visible light
d. ultraviolet
Answers
Answer:
d. ultraviolet
the answer is ultraviolet
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Which of the following structures are present in plant cells but absent in animal cells?
Choose 1 answer:
(Choice A)
A
Cytosol
(Choice B)
B
Mitochondria
(Choice C)
C
Cell walls
(Choice D)
D
Golgi bodies
Answers
Answer:
C
Explanation:
The cell wall in only present in plant cells, not animal cells. Hence, the fact that plant cells are rectangular while animal cells are more circular.
Students in a biology class were discussing outbreaks of food-borne illness. Modern practices of refrigeration are aimed at curbing (limiting) these bacteria. They wanted to know exactly what happened to bacterial colony growth at varying temperatures. The teacher explained that scientists study bacteria in the laboratory by counting colonies that grow on plates filled with agar, which is a nutrient substance. “Design” an appropriate experiment that would test the effect of temperature on bacterial growth. You would have a period of 5 days to conduct an experiment.
Answers
Answer:
I know this isn't a big help answer, but you could use it as a start. You could say something like "I tested it in multiple different temps. including .... (any temps. you want) Then say how all of thoose different temps. changed the bacteria." I hope it helped! :)
Explanation:
Most of the foodborne diseases are caused by those bacteria that can grow well and infect food at normal temperatures, and their population can be controlled by lowering the temperature or raising the temperature too high, which can degrade their cell walls.
What is the effect of temperature on the bacteria?There are numerous bacteria that can infect food and cause foodborne disease when consumed by humans, resulting in diarrhea, stomach aches, and other symptoms. Because most of these bacteria grow at room temperature, keeping food at that temperature degrades it faster, so foods are kept and stored in the refrigerator. This low temperature keeps the cellular activity of bacteria low; as a result, the bacteria cannot produce toxins or grow their population.
Due to this, the refrigerator stores the food for a longer time. Different strains can be kept and stored at different temperatures on an agar plate, but a strain present at a low temperature will produce far fewer colonies than one present at a room temperature. Further the growth depends upon the types of bacteria.
Hence, by refrigerating the food, cellular activity is seized and controlled.
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What are the Characteristics of a good hypothesis
Answers
Hydroponics is defined as the practice of growing plants without soil used to provide support or nutrients or ‘Soilless Farming'. How is ‘Hydroponics' an effective method of farming in arid and dry zones other Earth?
Answers
Answer:
Hydroponics solves the problem of unavailability of water in those arid and dry regions
Explanation:
As rightly stated in the question, hydroponics is a practice that involves the culturing of plants without the need for soil. Hydroponics procedure make use of a moisture-containing solution filled with nutrients.
This procedure of hydroponics, however, comes with some disadvantages but one major effectiveness it has in arid or dry regions is that it SOLVES THE PROBLEM OF WATER UNAVAILABILITY. When it comes to farming practice using soil, constant water supply is an unnegotiable criterion because water is needed for the growth of plants in the soil.
However, in arid regions, which are usually very dry due to lack of rainfall, the practice of hydroponics can substitute for soil farming in order not to cause food scarcity.
Which option correctly describes the role of the nucleus in the cell?
The nucleus controls the making of proteins.
The nucleus controls the storage of food and water.
The nucleus controls the production of energy within the cell.
The nucleus controls the breakdown of old cell parts.
Answers
Functions of the nucleus:
control of the genetical information of the cell and the heredity characteristics of an organism
control of the protein and enzyme synthesis
control of cell division and cell growth
storage of DNA, RNA and ribosome
regulation of the transcription of the mRNA to protein
production of ribosomes
Answer: The nucleus controls the making of proteins.
Ecosystem services are services that are supplied by humans for the environment.
O a. True
O b. False
Answers
How can the study of biology improve human lives? Give two examples.
Answers
Answer:
the study of biology can improve someone's but them understanding live the word biology comes with the root word live
Explanation:
Do flies have white blood cells?
Answers
Answer:Sort of
Explanation:
Insects do have blood -- sort of. It's usually called hemolymph (or haemolymph) and is sharply distinguished from human blood and the blood of most animals that you would be likely to have seen by an absence of red blood cells.Oct
What is the name of the group of proteins that can speed up the process or reduce the activation energy of a reaction? a) enzymes b) lipids O c) ions d) vitamins Please help me
Answers
Answer:
The answer is a) enzymes
How do I set up and collect data in a data table and identify trends?
Answers
Answer:
Explanation:
To collect information you need to read and understand why it works and make an analysis of what you understood about the information in the table
and this is how you find the trends. A trends can often be found by establishing a line chart. A trendline is the line formed between a high and a low. If that line is going up, the trend is up. If the trendline is sloping downward, the trend is down.
Certain cells, such as erythrocytes, do not contain DNA. Which of these is MOST likely true for these
cells?
o
A. They do not move.
o B. They do not reproduce.
o
C. They do not contain proteins,
o
D. They do not perform homeostasis.
Answers
Answer:B
Explanation:
Geologists, more specifically mineralogists, identify minerals based on ________. A. Optical properties. B. Solid properties. C. Behavioral properties. D. Physical properties.
Answers
The minerals are mostly characterized by the Physical properties (D) which includes the hardness, lustre, density etc. The mineralogists check the detailed view of minerals by using high powered microscope.
The minerals are chemical compounds which are formed as a result of physical processes or geological processes. They mostly occur in crystalline form. For Example: Cacite, Sulfur, Quartz etc[tex].[/tex]
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How does diagnosis explain why 1 ml of liquid from her small intestine digested protein slowly but 1 mg of her pure protease protein normally?
Answers
Answer:
Due to the absence of proteolytic enzymes.
Explanation:
The study diagnosis that small intestine digested protein slowly due to the absence or decrease quantity of proteolytic enzymes in the small intestine. Proteolytic enzymes are responsible to speed up the digestion process and after digestion amino acid is produced which is directly injected into the blood that is used by the body for the formation of muscles.
Which best defines homeostasis? modifying the external environment maintaining a stable internal environment controlling what enters and exits the cell movement of materials into the cell
Answers
Answer:
B. maintaining a stable internal environment
Explanation:
Took the test :)
Answer: yes its B
Explanation:
The Calvin cycle takes place in the stroma. What happens in the thylakoid
membranes?
thylakoid
stroma
grana
O A. The Krebs cycle
O B. All of photosynthesis
O C. Light reactions of photosynthesis
D. Dark reactions of photosynthesis
Answers
Answer:
B
Explanation:
I think so ................
Light reaction of photosynthesis takes place in the thylakoid membrane. The correct option is C.
What is chloroplast?Chloroplast is a cell organelle that contains chlorophyll, and is the place of photosynthesis. It is present in only photosynthetic organisms.
Integral membrane proteins in thylakoid membranes play an important role in light harvesting and photosynthesis's light-dependent reactions.
Thus, the correct option is C.
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