gene mutations can occur
a. exposure to chemical mutagens
b. exposure to gamma radiations

Answers

Answer 1

Answer:

b

Explanation:


Related Questions

Why are renewable sources of energy better than nonrenewable sources? A. Because they release carbon dioxide B. Because they can be used again C. Because they contain more energy D. Because they are less expensive

Answers

Answer:C

Explanation:because it needs carbon dioxide and it can be used again

Science question-
What are the two types of igneous?

A.Away from each other

B.Toward each other

C.They don’t move

Please help!!Have a good day!

Answers

Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies. Intrusive Igneous Rocks: Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth.

What is the most common stimulant drug used today?
A.Heroin
B.Cocaine
C.Caffeine
D.Alcohol

Answers

Answer:

B. cocaine

Explanation:

What information is necessary to understand how a virus produces the proteins it requires?

A. Whether the virus is in the lytic or lysogenic cycle
B. Whether the genome is made of RNA or DNA, whether the genome is double -stranded or single-stranded, and the sense of the genome
C. Whether the virus has a protein capsid
D. Whether the virus is helical, icosahedral, enveloped, or complex

Answers

Answer:

A is the answer i had same answer

The information is necessary to understand how a virus produces the proteins it requires is " whether the virus is in the lytic or lysogenic cycle".

What is virus ?

A virus would be an infectious submicroscopic creature that only reproduces inside of live cells. All living things, including plants, animals, even microbes like bacteria or archaea, are susceptible to virus infection.

What is lysogenic cycle?

The bacteriophage nucleic acid is integrated into the genome of the bacterial host during lysogeny or a spherical replicon forms in the bacterial cytoplasm.

Therefore, the information is necessary to understand how a virus produces the proteins it requires is " Whether the virus is in the lytic or lysogenic cycle".

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I need help with question 54 .

Answers

Answer: D

In the laboratory, under favorable conditions, a bacterial population will grow exponentially, but in the real environment, these favorable conditions do not always exist.

Oxaloacetate is a key intermediate in the citric acid cycle, but it is also needed as a precursor for the synthesis of glucose during gluconeogenesis. Oxaloacetate is also fairly chemically unstable and undergoes spontaneous decarboxylation to pyruvate. Although oxaloacetate is not depleted by participation in the citric acid cycle, it can become depleted by other processes, necessitating its replenishment by various synthetic pathways. Use the Metabolic Map to identify enzymes that can replenish oxaloacetate or other citric acid cycle intermediates.

Answers

Answer:

Carboxylating pyruvate into oxaloacetate.

Explanation:

Replenishing oxaloacetate is done by carboxylating pyruvate into oxaloacetate through a process that is catalyzed by an enzyme called pyruvate carboxylase. This enzyme speed up the process and the replenishing of oxaloacetate occur quickly and the oxaloacetate is ready to function and participate in different chemical reactions.

Depleted oxaloacetate can be replenished by the carboxylation of pyruvate by the enzyme pyruvate carboxylase.

What is the citric acid cycle?

The citric acid cycle is a cycle which is important in aerobic respiration for the production of ATP.

One of the intermediates in the citric acid cycle is oxaloacetate.

Oxaloacetate combines with acetylcoA to form citric acid.

Depleted oxaloacetate can be replenished by the carboxylation of pyruvate by the enzyme pyruvate carboxylase.

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A calorie is the amount of energy it takes raise the... of 1 mL of water by 1° C.


a) temperature
b) mass
c) volume
d) density

Answers

The answer is a temperature.

Motor proteins provide for molecular motion in cells by interacting with which of the following cellular structures?
components of the cytoskeleton
membrane proteins of the inner nuclear envelope
free ribosomes and ribosomes attached to the ER
cellulose fibers in the cell wall

Answers

Answer:

microtubules more chromosome motor protein required energy in the form of ATP ATP hydrolysis result in a conformational change that allows the protein to mobile of microtubule actor

Were there any extinction events that occurred during the Cambrian period?? Help !!!

Answers

Yes. Oxygen crash led to Cambrian mass extinction

The genootype for a pea plant that is hom0zygous recessive for both height and pea color

a.TtYy
b. ttyy
c. TTYY
d. ttYY

Answers

Answer: b ttyy
Explanation I hope this helps

Plz help ASAP

Marking Brianelist

Answers

Answer:

The answer is D

Which is NOT an example of a fossl fuel
O Coal
O Oll
O Water
O Natural gas
Please help ASAP

Answers

the correct answer is water

How has biotechnology
contributed positively to
our lives?

Answers

Answer:

It has made genetically modified crops and farms to make farming more efficient and productive

Explanation:

A microscope has a 4x ocular lens and a 10x objective, what is this microscope's
total magnification?
4x
14x
40x
400x

Answers

40x total magnification

Answer:

It would be 40x

Explanation: The explanation is that 10x and 4x is 40x on a microscope unless you are working with a different type of microscope with the 50x ocular lens

What type of material is often used to make Impressions of tool marks?

A. cement mix
B. dental paste
C. porcelain clay
D. plaster of Paris​

Answers

Explanation:

I would say/ a rubber base material is used for tool Mark's, I believe dental paste is used because it has the same material as described above....

A researcher wants to study the impact of mutations on health. She focuses her work
on mutations associated with cancer. What would many of the mutations she studies
have in common?
A. They occur only in sex-cells.
B. They have no impact on cell function.
C. They cause the cell cycle to be unregulated.
D. The cause no change in amino acid sequence.

Answers

It is either A or C but I’m not 100% sure

Which spheres of Earth are directly influenced when human-caused air pollution leads to acid rain that dissolves limestone rocks?

atmosphere, cryosphere, geosphere
cryosphere, hydrosphere, biosphere
geosphere, atmosphere, hydrosphere
biosphere, atmosphere, cryosphere

Answers

Answer:

Atmosphere, Geosphere and Hydrosphere

Explanation:

The spheres of earth that get influenced by the human-caused air pollution which leads to acid rains that dissolves the limestone rocks are the atmosphere, geosphere, and the hydrosphere.

This is because the atmosphere contains polluted air which has the components of acid rain. The acid rains accumulate on the hydrosphere if not collected by the geosphere. The geosphere is the one that is drastically affected by the acid rains as the limestone rocks melt.

The atmosphere, geosphere, and hydrosphere are the three spheres of the planet that are affected by human-caused air pollution, which causes acid rains to dissolve limestone rocks.

What is Acid rain?

This is because acid rain is caused by contaminated air, which is present in the atmosphere. If the geosphere does not catch the acid rains, they build on the hydrosphere. As the limestone rocks melt as a result of the acid rains, the geosphere is the one that is most severely impacted.

Any type of precipitation with high concentrations of nitric and sulfuric acids is referred to as acid rain.

Snow, fog, and minuscule pieces of dry material that fall to Earth can likewise represent it. Acid rain typically has a pH between 4.2 and 4.4, whereas normal rain has a slightly acidic pH of 5.6.

Therefore, The atmosphere, geosphere, and hydrosphere are the three spheres of the planet that are affected by human-caused air pollution, which causes acid rains to dissolve limestone rocks.

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PLS HELP!!! 25 POINTSS DUE SOON!!!
Many of the animals that live in the northernmost regions of the Northern Hemisphere have white fur. How does having white fur make these animals more likely to survive in an arctic environment?

Answers

It helps them keep warm and just brings more vibrant things in the world and it makes them feel completely comfortable

Answer:

White fur blends in with the snow!! It helps them prevent being prey or to be a very excellent predator.

Explanation:

:)

A student drew the following model.
Which phase is the best summary of the model

Answers

can you please provide a summary of the model? try posting this question again.

Please help me

What is the advantage of porous bones in birds?
A. their holes assist in ridding the bird of wastes
B. their holes help keep the feathers intact
C. they are lighter, which helps with flight
D. they are lighter, which makes the bird need less food

Answers

Answer:

C. But see the answer under C. Apparently C is the accepted answer.

Explanation:

A. Not A.I don't think that's a problem for gulls especially on beaches.

B. Not B.  Their feather do not look like they need much help in keeping their feathers attached when in flight.

C. This is not really the answer, but it is the best answer of these 4. The actual answer is that the bones are porous for better air intake which provides more oxygen and hence they are better able to fly.

D. Not D. Food has nothing to do with the problem. Birds get an adequate amount of food without their wings being porous. See the answer for C.

Answer:

C. they are lighter, which helps with flight

Explanation:

Have a great day

Which adaptation allows reptiles to live entirely on land check all that apply

Answers

Living on land means reptiles can't rely on absorbing oxygen through their skin like amphibians. All reptiles have lungs they use for breathing -- even those who live most of their lives near or in water, such as crocodiles, must surface to breathe. Lungs allow reptiles to venture far away from aquatic environments.

Reptiles' capacity to deposit amniotic eggs is the main trait that enables them to live exclusively on land. Amniotic eggs have a protective shell around them and include specific membranes that give the growing embryo a self-contained aquatic environment. Amniotic reproduction is the name given to this adaptation.

The amniotic egg has a number of crucial characteristics that let it thrive on land. These qualities consist of:

Shell: By minimizing water loss, the embryo's shell protects it physically and keeps it from desiccating (drying out).

Amnion: The amnion is a membrane that covers the embryo and holds amniotic fluid, which acts as a cushion and source of buoyancy.

The chorion is an additional membrane that encircles the amnion. By facilitating gas exchange, it allows carbon dioxide to leave and oxygen to enter the egg.

The allantois is a sac-like organ that aids in breathing and stores metabolic waste products from the developing embryo.

Egg yolk sac: The yolk sac is a source of proteins, lipids, and minerals that feed the growing embryo.

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6. Which domain includes all multi-cellular organisms?
a. Eukarya
b. Bacteria
c. Archaea
d. None of the above

Answers

Answer:

Eukarya

Eukarya is the only domain that consists of multicellular and visible organisms, like people, animals, plants and trees.

how can strong emotions influence the decisions you make.

Answers

Answer:

Strong emotions can make you do many things (sometimes things you don't want to). When someones is very angry they usually act out of anger and when someone is very sad they usuallu act out of sadness. It takes a strong minded person to be able to control their emotions whithout ever acting out.

Explanation:

what the other person said was 100% true

In normal cells the amino acid phenylalanine attaches to tRNAs with the anticodon AAA. The enzyme aminoacyl-tRNA synthetase catalyzes the reaction that attaches the amino acid to the correct tRNA. Assume that a mutation occurs in the aminoacyl-tRNA synthetase enzyme and causes it to attach lysine instead of phenylalanine to tRNAs with the anticodon AAA. What will be the consequence of this mutation for the translation process

Answers

Answer:

Aminoacyl-tRNA bond is hydrolyzed.

Explanation:

The consequence of this mutation for the translation process is the hydrolysis of aminoacyl tRNA bond occur.  If the incorrect amino acid is attached to other molecule as a result of this reaction, the aminoacyl-tRNA bond is hydrolyzed. This incorrect binding of amino acid occur because of mutation in the aminoacyl-tRNA synthetase enzyme that leads to its hydrolysis.


In your own words, explain what the loss of trees in Uruk did to the agriculture and the population, and why this didn't happen in Anuradhapura

Answers

Answer:

Between approximately 3600 and 2600 BCE, the people of Uruk created the ... collected into a whole and living in a defined place with structures designated for a ... as one of the world's first cities (Uruk is its Akkadian name; its own people called it ... condemned to death, and Gilgamesh has to accept the loss of his friend

Explanation:

Which of the following is an example of olfactory sense?
Select one:
a. Salim predicted the lunch menu by touching the food
O b. Salim predict
the lunch menu just by the smell
of the food

c. Salim predicted the lunch menu by looking at the food
d d. None of these​

Answers

b. Salim predict

the lunch menu just by the smell

of the food

In what form is energy that is NOT used for life processes released from
living things?

A) Light energy
B) Sound energy
C) Thermal energy
D) Chemical energy

Answers

Answer:

a concave lens is exactly the opppostie with outer surfaces  curving inward, so it makes parallel light rays curve outward or diverge. That's why concave lenses are sometimes called diverging lenses. ... The distance from the center of the lens to the focal point is, again, the focal length of the lens.

Explanation:


Help fast plz!!!
In a population of moths, wing color became darker over time. Which of the
following is the best evidence that the change in wing color was an evolutionary change?
a) The size of the moth population changed.
b) The average length of the moths' dark wings increased.
c) The number of eggs that females laid during each breeding season increased.
d) The frequencies of the alleles for dark wing color in the moth population
changed.

Answers

Answer:

d) The frequencies of the alleles for dark wing color in the moth population

changed.

Answer:

D

Explanation:

It would best describe how or what made the moths have more dark/darker collored wings overtime.

Humans originated in Africa about 7 million years ago: if life on earth started 3.5bya ago and represented 24 hours from then to today, how many minutes of these 24 hours would be devoted to this 24-hour clock
a) since the first humans showed up?
b) since Humans showed up 300,000 ya?

Answers

I don’t quite understand the answers that you’ve provided to choose from, but if we are comparing those millions of years to a 24 hour clock, then humans have only been around for 2.88 minutes of out the entirety of life on Earth.
Sorry if this didn’t answer your question, but I hope this somehow helps.

A-Handpicking
B-Sieving
C-Using a Magnet
1. Fine flour and lumpy flour
2. Mixed nuts
3. Sand and gravel
4. Sand and palay
5. Scrap iron and nail​

Answers

[tex]\huge\mathfrak\pink{answer}[/tex]

1) Fine flour and lumpy flour - B) Sieving

2) Mixed nuts - A) Handpicking

3) Sand and gravel - B) Sieving

4) Sand and palay - B) Sieving

5) Scrap iron and nail - C) Using magnet

(mark me brainliest if you're satisfied with my answer :))

[tex]\large\mathfrak\pink{thank \: you}[/tex]

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Without solving what can you tell about the solution Which pronoun is used toaddress people who are notfamiliar to us, people who areolder than us, or people whoare in a position of power(doctors, politicians, teachers,etc)?A. TiB. EllosC. Usted What are the solutions to the equation y^2-1 = 80? 3.663 rounded to the nearest tenth of an ounce 13. Tikboy earns P 320 a day. This is 4% of her monthly income. How much is her monthly incoma. 800b. 80c. 8,000d 80,000 [T]hey raised their eyes to heaven, their hands clasped high above their heads, and stood straight and perfectly still, invoking the power of the Great Spirit to allow them to see and talk with their people who had died. . . .They would go as fast as they could, their hands moving from side to side.What is Parker describing in this quotation?the ritualized movements of Sioux Indians during a Ghost Dance ceremonythe horrified response of Cheyenne Indians after the Sand Creek Massacrethe celebratory reaction to the signing of the Treaty of Fort Laramiethe anger and fear of white settlers that began after the Battle of Little Bighorn Forensic scientist Bennet asks his technician for the scalar quantity of fingerprints found at his crime scene. What would be the technician's most likely answer? There were 13 fingerprints found at the crime scene. There were fingerprints in the hallway facing the direction of the kitchen and fingerprints in the kitchen pointing toward the door handle. There were individual prints dusted at the crime scene, but they have not been identified yet. There were fingerprints found in the bedroom, some that look like they are sliding down the hallway, and prints leading to the refrigerator. Store A sells boxes of rice for $2.50 each.Store B sells rice by the pound for $2.50 per pound.The cost of an amount of rice at either store can be modeled by the function c(n) = 2.5n, where n is the number of boxes for Store A and n is the number of pounds of rice for Store B.The domain of c(n) = 2.5n is all the real numbers.For each store, drag the restriction needed on values of n for c(n) to model each situation. Find the volume and explain your answer round to the nearest tenth!! similarities of ancient and modern philosophy A certain town never has two sunny days in a row. Each day is classified as being either sunny, cloudy (but dry), or rainy. If it is sunny one day, then it is equally likely to be either cloudy or rainy the next day. If it is rainy or cloudy one day, then there is 60% of chance that it will be the same the next day, and if it changes then it is equally likely to be either of the other two possibilities. In the long run, how frequent are we observing a day for which it is rainy and the next two days are also rainy what is the area of a rectangle whose length is (2x-1) cm and whose width is (X+2) cm?help. PLS HELP ASAP! GIVING BRAINLIST! In which situation would a system of currency exchange be necessary? A. A person in Nigeria trades his bicycle for his friends new skateboard. B. A business in Egypt pays its workers their wages at the end of the week. C. A person in Kenya pays the taxes she owes to the local government. D. A business in South Africa buys automobile parts from a business in China. Montana, Idaho, and ______ grow sugar beets. New Mexico Arizona Colorado Nevada write briefly about your house how are you this which are the rooms of your house write five or six complete in spanish A 2.00 g sample of ammonia (NH3) reacts with 4.00 g of oxygen (O2) according to the equation 4NH3+5O24NO+6H2O. How much excess reactant remains after the reaction has stopped ( knowing that NH3 is the excess reactant )? find the difference between (14-3x) and (-9x+7) 0.6 + 15 b + 4 = 25.6. There are 20 girlsand 12 boys in a class.What would be the probability ofrandomly selecting a girl? (Decimals please)