A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the laboratory. Which statement best provides evidence that the substance is a mutagen? -The cells die within hours of being exposed to the chemical. -The cells grow more quickly than those that were not exposed to the chemical. -The cells change after being exposed to the chemical, and this change is passed to the next generation of cells. -The cells continue to divide at the same rate as before they were exposed to the chemical.

Answers

Answer 1

Answer:

The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

Explanation:

Mutation is a process that occurs from time to time to the genetic material of living cells. Mutation is a change in the nucleotide sequence of a DNA or gene. It is usually caused by errors during replication or induced by an external substance called MUTAGEN.

A mutagen is any substance that causes mutation in an organism. Hence, according to the question, the chemical substance which is thought to be a mutagen will change the cells after being exposed to the chemical, and this change is passed to the next generation of cells.

N.B: Since mutation affects the gene, it is passed on to the offsprings during reproduction.

Answer 2

Answer:

its c did the test

Explanation:


Related Questions

You are conducting research into the effects of certain chemicals being dumped into lakes on the populations living in the lakes. Which of the following metrics is NOT used to measure populations? A. The growth rate of the population B. The density of the population C. The rate of food consumption of the population D. The size of the population

Answers

Answer:

B. The density of the population.

Explanation:

Bears eat berries, humans, and large fish; large fish eat smaller fish and insects; humans eat bears, large fish, and berries; Venus flytraps eat insects. The scenario described here is an example of ______.

Answers

Food webs show how food chains are connected and what an ecological group eats. Therefore, this scenario represents a food web.

What is a food web?

An ecological community's food web is a graphical representation of the natural connectivity of food chains as well as the question of what consumes what in that community. The term "consumer-resource system" is another name for the "food web."

There are often two distinct kinds of food webs present in an ecosystem: a grazing food web that is supported by photosynthetic plants or algae, and a detrital food web that is supported by organisms that decompose dead matter (such as fungi).

Learn more about food web, here:

https://brainly.com/question/2233704

#SPJ6

All of the following are protozoans except Mushrooms Amoebas Paramecium Euglena

Answers

Answer:

because they belong in the fungi kingdom

Explanation:

Answer:

Mushrooms

Explanation:

Mushrooms belong to the fungi kingdom

1.What is the Independent Variable?
5 points
Connor and Miguel want to investigate if the type of
fertilizer changes the color of their hydrangea flowers.
They select 10 hydrangea bushes and plant them in the
same yard with the same type of soil. Every bush gets 3
cups of fertilizer, but each receiving a different brand.
One bush gets no fertilizer. All bushes receive morning
sunlight and no afternoon sunlight. All bushes are watered
the same amount every other morning. After four weeks,
the boys observe the color of the blooms on each bush.
the bush
the soil
the fertilizer
the color of the plants

Answers

Answer:

the type of fertilizer

Explanation:

because independent variable is something that effects that the whole outcome of the experiment and here the type of fertilizer chosen is going to be the thing that is going to effect the ending result

Which kind of research is most likely to improve the health of the
environment?

Answers

Answer:

The environment   play a role in people mental and physical being.

Explanation:

Environment  quality and human health  remain factors and taking into multiple interactions economic and cultural context.

Environment through air pollution, chemicals, poor quality water and natural area loss, increase in rates obesity, diabetes, and diseases.

Environment factors are particular matter, environmental tobacco smoke leading,and indicative ranking of environmental impacts of health.

Environment across depend on the pressures relate to pollution and natural resources,pollution reduction and the natural environment distribute populations.

Environmental quality can be policy and population group, incomes, elderly and the educational status, environment burden they focus on health and complex causal path.

Suppose you take glycine tRNA and modify it so that the glycine is changed to valine. You then find that the amino acid sequence in the generated proteins does not show the expected change. This result would suggest that the protein synthesis machinery recognizes the _______ and is _______ with what was actually found by researchers.

Answers

Answer:

Suppose you take glycine tRNA and modify it so that the glycine is changed to valine. You then find that the amino acid sequence in the generated proteins does not show the expected change. This result would suggest that the protein synthesis machinery recognizes the tRNA anticodon and is congruent with what was actually found by researchers.

Explanation:

A group of researchers led by Seymour Benzer demonstrated that the anticodon of the charged tRNA was recognized by the protein synthesis machinery, when they changed the amino acid sequence. This example shows the exact result as found by the researchers.

what type of cash crops have been genetically modified..... please help!!!!!

Answers

Answer:

Most food modifications have primarily focused on cash crops in high demand by farmers such as soybean, corn, canola, and cotton. Genetically modified crops have been engineered for resistance to pathogens and herbicides and for better nutrient profiles.

Explanation:

Write a few sentences explaining whether the following theme from The Outsiders is universal: “People often struggle to fit in; they question the right way to live their lives.”

Answers

Sample Response: This theme is universal. It can apply to all people, and most people struggle with this question.

"When human settlers arrived on the island of Mauritus, they caused the Dodo bird species to become extinct within 50 years. What did the settlers do to cause their extinction?"

Answers

Answer:

It's commonly believed that the dodo went extinct because Dutch sailors ate the beast to extinction after finding that the bird was incredibly easy to catch due to the fact it had no fear of humans.

Explanation:

“Science is a beautiful gift to humanity ; we should not distort it.”-A.P.J. Abdul kalam.

How does the quote you chose relate to your ideas about the importance of studying science?

Answers

It is a wrong quote. Science is supposed to keep changing as we find new information and discover that our previous theories were wrong.

A possible answer to a scientific question that can be tested is a

Answers

The key to a good and manageable investigation is to choose a topic of interest, then ask what is called a “testable question.” Testable questions are those that can be answered through hands-on investigation by the student.

Which pairings match protozoa with the structures they use to move? amoeba: flagellum; euglena: cilia; paramecium: pseudopod amoeba: pseudopod; euglena: flagellum; paramecium: cilia amoeba: flagellum; euglena: pseudopod; paramecium: cilia amoeba: pseudopod; euglena: cilia; paramecium: flagellum

Answers

Answer:

The correct answer is -  amoeba: pseudopod; euglena: flagellum; paramecium: cilia

Explanation:

Protists use different type of structures for their movement known as pseudopods, flagella, and cillia.

Pseudopods are the structures found in amoeba in which flowing of protoplasm moves the amoeba forward.

A euglena moves by strikes or whip its flagellum, that is a long appendages, like propeller of a helicopter.

Cilia are thin, very small tail-like structure that stretched outward from the of body of paramecium.

Thus, the correct answer is -  amoeba: pseudopod; euglena: flagellum; paramecium: cilia

"Wow! This rose bush is doing so much better on this side of the house than
on the other side. I wonder why that is?"

Answers

East or South side is best

Explanation:

Roses do best in full sun and morning sun is the best place. so always plant roses the along an east wall or south side of your home

Can someone describe these:
Menstrual Phase
Follicular Phase
and Luteal phase

Thanks!!!

Answers

Answer:

(menstrual phase) this is the phase where the unfertilized ovum and endometrium that was formed in readiness for implantation slough off or come out due to a sudden drop in progesterone levels

(follicular phase) this is where the graafian follicle in the ovary develops. from primary follicles due to secretion of follicle stimulating hormone by the pituitary gland and matures there after due LH hormone which will also stimulate the ovary to release the ovum

(luteal phase)this is the phase after the ovum has been released where the remains of the ruptured graafian follicle undergo reorganization to form a corpus luteum/yellow body which now produces progesterone which causes thickening of endometrium in readiness for implantation

hope this helps

Answer:

The menstrual cycle is the regular natural change that occurs in the female reproductive system that makes pregnancy possible. 2) The follicular phase is a phase of the estrous cycle during which follicles in the ovary nature from primary to a fully mature grafian follicle.It ends with ovulation.3) The luteal phase begins during the second half of a menstrual cycle normally lasting around 12 14 days after the ovulation and it is responsible for producing progesterone.

How do earth's system interact to cycle organic matter? Write a statement that responds to the question HELP!

Answers

Answer:

Biosphere comprises all the living components of the Earth. It also includes organic matter that has not yet decayed.

Explanation:

A theory known as the ecosystem better explains the interaction of the biosphere with the other spheres.

What are the uses of the whorls of the flower ​

Answers

Answer:

The outermost whorl of the flower has green, leafy structures known as sepals. The sepals, collectively called the calyx, help to protect the unopened bud. The second whorl is comprised of petals—usually, brightly colored—collectively called the corolla.

Which term refers to all areas of Earth where life exists?
biosphere
biome
community
ecosystem

Answers

Biosphere! Your welcome:)

The term that used to represent the land, water, surface and atmosphere of the whole planet where life exists is called the biosphere. So option A is correct.

What is the biosphere?

Multiple species make a population, population makes a community, the community makes an ecosystem, ecosystem makes a biome, and biome makes a biosphere.

The biospheres can be classified as:

Lithosphere: It consists of the land part of the earth. The lithosphere comprises plains, plateaus, mountains, etc.

Hydrosphere: The water constituent of the earth forms the hydrosphere. It includes rivers, oceans, lakes, ponds, etc.

Atmosphere: The air surrounding the earth comprising of varying gases forms the atmosphere of the earth.

So biosphere is the largest unit of ecology which include the whole planet like earth in it. So option A is correct.

Learn more about ecology, here:

https://brainly.com/question/13046612

#SPJ5

A scientist is conducting research about all the plants and wildlife in the Mojave Desert as well as the desert’s resources, such as water and soil. The scientist is studying
a community.
a population.
a species.
an ecosystem.

Answers

Answer:

an ecosystem. I got it right on edge 2020.

Explanation:

A scientist is conducting research about all the plants and wildlife in the Mojave Desert this scientist is studying an ecosystem.

What is the ecosystem?

An ecosystem is a set formed by the interactions between biotic components, such as living organisms: plants, animals and microbes, and abiotic components, chemical and physical elements, such as air, water, soil and minerals.

Broad categories of terrestrial ecosystems are called biomes. In ecosystems, matter and energy are conserved.

See more about ecosystem at brainly.com/question/13979184

answer it answer it .

Answers

Answer:

Pseudopodia

Explanation:

Human uses his legs for locomotion and movement similarly in amoeba pseudopodia is used for movement in amoeba and other unicellular organisms. Pseudopodia is a structure in amoeba which is used for movement and locomotion in amoeba and it is also used for engulfing food, amoebic movement is also considered as a protoplasmic movement.

Answer:

c

Explanation:

nkjbhvcgfxdsftgjkhvghcfgvhjvgc ghuvg

Which state of water concentration is healthiest in an animal cell?
A. Isotonic
OB. Hypertonic
C. Equitonic
D. Hypotonic

Answers

Answer:

D. Hypotonic

Explanation:

Answer:

C. Isotonic

Explanation:

i took the quiz and its right

write five example of bodies which are at rest​

Answers

Answer:

1. A person sitting on a chair.

2. Water in a bucket.

3. Bus without a driver.

4. Electric fan without electricity.

5.Car without engine.

please answer fast
difference between fish and frog on the habitat and structure of heart

Answers

Answer:

the answer is this

Explanation:

hope this help

good luck for your homework

Name 2 features/tools in Drive that makes it easy to collaborate on assignments?

Answers

1. Live action
It shows what people are editing on your assignment so that you know what they have changed on it
2. Comments
When people have a suggestion, all they simply do is comment
Hope this helped! If it did, please mark as brainiest!

The pronghorn antelope resides in temperature grassland biomes of North America. Their primary predators in this region are wolves, coyotes, cougars, and bobcats. The reason pronghorn antelope are not found outside of North America is most likely that Group of answer choices

Answers

Answer:

The options are

A) there are too many pronghorn predators outside North America.

B) its temperature requirements are stringent and not met outside North America.

C) it is a relatively new species in evolutionary terms.

D) its nutritional requirements cannot be met outside this region.

E) it has never dispersed beyond this region.

The answer is E) it has never dispersed beyond this region.

The pronghorn antelope resides in temperature grassland biomes of North America. The reason pronghorn antelope are not found outside of North America is most likely that it has never dispersed beyond this region which could be due to the suitability of the environment to their survival.

The theory of plate tectonics is supported by _______. The Eurasian and African plate are pushed away from the North and South American Plates at the _______. _______ is where rocks are carried back into the mantle of the earth. _______ iron can be magnetized by the magnetism of the earth. Subduction of the ocean floor occurs in _______. Respond to the following based on your reading. Why have rocks older than 200 million years never been found in the oceans? Explain how the movement of tectonic plates is responsible for this recycling of the ocean floor.

Answers

Answer:

1. ridges and trenches (either answer is acceptable)

2. mid-atlanitc

3. subduction zone

4. molten

5. oceanic trenches

Explain:

6. Rocks in the ocean eventually get subducted back into earths mantle due to slab pull. New rocks form at mid-ocean ridges as ridge forces two plates to diverge.

1. ridges and trenches (either answer is acceptable)

2. mid-atlanitc

3. subduction zone

4. molten

5. oceanic trenches

Explain:

6. Rocks in the ocean eventually get subducted back into earths mantle due to slab pull. New rocks form at mid-ocean ridges as ridge forces two plates to diverge.

Explanation:

What process is similar in function to genetic engineering but different in the mechanism it uses? A. Replication in a bioreactor B. Cellular Respiration C. Breeding for specific traits D. Genetic Calculus

Answers

Option C. Breeding for specific traits is a similar process in function to genetic engineering but different in the mechanism it uses.

Genetic engineering refers to the process of using recombinant DNA methodologies to alter the genome of a particular organism and thus obtain the desired characteristics/traits in organisms derived from them.

An example of genetic engineering is the use of recombinant DNA methodologies to develop Escherichia coli strains that generate human insulin.

Moreover, selective breeding refers to the process aimed at developing organisms with desirable characteristics by choosing parents with these traits in order to cross them and produce offspring with these phenotypic traits.

For example, wheat plants with better yields can be obtained by crossing between wheat varieties that exhibit desired phenotypic traits.

In conclusion, Option C. Breeding for specific traits has a similar objective that genetic engineering but the mechanism to reach this objective is different.

Learn more in:

https://brainly.com/question/5757079?referrer=searchResults

A garden has a length of 1.5 x102 m and a width of 0.5 x 102 m. what is the area of the garden?

Answers

Answer:

7.5 × 10^3 m^2

Explanation:

The garden described in this question takes the shape of a rectangle, which has a length of 1.5 x102 m and width/breadth of 0.5 x 102 m.

To calculate the area, we use the formula for calculating the area of a rectangle, which is;

Area = length (L) × width (w)

Area = 1.5 x102 m × 0.5 x 102 m

Area = 150 × 50

Area = 7500

This, the area of the garden is 7500m^2 or 7.5 × 10^3 m^2

How much time is required for a P-wave to travel 6,000 kilometers?

Answers

Answer:

294.1 minutes

Explanation:

5,882 seconds (98 minutes) to travel 2,000 km.

2,000 x 3 = 6,000

5,882 seconds x 3 = 17,646

(294.1 minutes) to travel 6,000 km

What is the difference between geophysical and geochemical testing

Answers

Answer:Geochemistry  is about the chemical connection with the earth. On the other hand, geophysics is concerned with the physical relation with the earth.

Explanation:

Proteins in the cell membrane have many functions. Which type of protein would be used for cell recognition and as a receptor? A. Pore proteins B. Endoplasmic proteins C. Glycoproteins D. Integral proteins

Answers

Answer:

C. glycoproteins

Explanation:

Glycoproteins are proteins containing glycans (oligosaccharide carbohydrates) attached to amino acid side chains. These oligosaccharides are attached to the amino acid chain by a posttranslational modification referred to as glycosylation, a modification generally found in extracellular regions. Glycosylation refers to the chemical reaction in which a glycosyl donor (i.e., the carbohydrate) is attached to a functional group in the protein. The glycosylation sites play distinct functional roles for both cell interactions and cell recognition. Moreover, glycosylation sites are also essential for substrate recognition by an enzyme. For example, secreted cytokines are glycosylated, which is required for their binding to receptors.

Other Questions
Which is not necessary in a historical essay?O A. argumentative thesis statementB.first-hand accountsOc.historical evidenceD.interpretive claimsOE.properly cited resources In this activity, you will explain global warming: its causes and effects. You may want to pick a certain area to focus on (for example, how global warming will affect sea levels and the fish population).Conduct online research to collect information about the major effects of global warming and climate change on food production. Write a short essay summarizing your research. PLEASE HELP OR JUST GIVE ME AN IDEA F WHAT TO WRITE!!! *PLEASE ANSWER TY* What is the volume of a hemisphere-shaped coffee if the width of the coffee cup is about 16.51 centimeters? (Use 3.14) List the two places you should look first when considering a topic to write about. PLS HELP I WILL MARK BRAINLIST AND GIVE YOU A THANK YOU An octagonal pyramid ... how many faces does it have, how many vertices and how many edges? A triangular prism ... how many faces does it have, how many vertices and how many edges? a triangular pyramid ... how many faces does it have, how many vertices and how many edges? There are two cells, one with OER as 2.5 and other as 7. Which cell is more sensitive to radiation? 1)The cell with OER 2.52)The Cell with OER 73)Both the cells4)Insufficient data A customer buys a variable annuity and elects a payout option of Life Income with a 20 year period certain. This means that payments will continue for: Just need to calculate the area of the shaded region, thanks Linda and Juan went shopping. Linda spent $16 less than Juan. If we let w represent how much Juan spent, write an algebraic expression for how much Linda spent. Example for answer: 3x^2+1, x/5, (a+b)/c What are the conditions of floatation in a liquid? Find the mean of the data in the pictograph below. describe importance of public participant What is the equivalent annual annuity of a project that requires an investment of $50,000 today and is expected to generate free cash flows of $15,000 per year for the next five years? The companys weighted average cost of capital is 13.1% per year. Which statement about balancing selection is correct? View Available Hint(s) Hint 1.opened hint What is balancing selection, and how does it differ from other forms of selection? Which statement about balancing selection is correct? When balancing selection occurs, no single phenotype has a distinct advantage over others in terms of fitness. When balancing selection occurs, all phenotypes have equal fitness. When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare. When balancing selection occurs, phenotype does not matter. solving polynomial(2x+8)(-3y-8) PLEASE help me with this question!!! REALLY URGENT! Type your response in the box. Read the excerpt from Arthur Conan Doyles The Adventure of the Speckled Band. Pay attention to the character Dr. Grimesby Roylott. Based on the excerpt, analyze Roylott using the STEAL method. Use all the STEAL elements that are relevant to the passage. Use details from the text in your analysis. STEAL method is: Speech Thoughts Effects on others Actions Looks Heres the Passage: The Adventure of the Speckled Band by Arthur Conan Doyle (excerpt) A large face, seared with a thousand wrinkles, burned yellow with the sun, and marked with every evil passion, was turned from one to the other of us, while his deep-set, bile-shot eyes, and his high, thin, fleshless nose, gave him somewhat the resemblance to a fierce old bird of prey. "Which of you is Holmes?" asked this apparition. "My name, sir; but you have the advantage of me," said my companion quietly. "I am Dr. Grimesby Roylott, of Stoke Moran." "Indeed, Doctor," said Holmes blandly. "Pray take a seat." "I will do nothing of the kind. My stepdaughter has been here. I have traced her. What has she been saying to you?" "It is a little cold for the time of the year," said Holmes. "What has she been saying to you?" screamed the old man furiously. "But I have heard that the crocuses promise well," continued my companion imperturbably. "Ha! You put me off, do you?" said our new visitor, taking a step forward and shaking his hunting-crop. "I know you, you scoundrel! I have heard of you before. You are Holmes, the meddler." My friend smiled. "Holmes, the busybody!" His smile broadened. "Holmes, the Scotland Yard Jack-in-office!" Holmes chuckled heartily. "Your conversation is most entertaining," said he. "When you go out close the door, for there is a decided draught." "I will go when I have said my say. Don't you dare to meddle with my affairs. I know that Miss Stoner has been here. I traced her! I am a dangerous man to fall foul of! See here." He stepped swiftly forward, seized the poker, and bent it into a curve with his huge brown hands. "See that you keep yourself out of my grip," he snarled, and hurling the twisted poker into the fireplace he strode out of the room. PLEASE HELP! 15 points reward and brainliest! original answers ONLY PLEASE HELP ME ANSWER ALL THESE QUESTIONS Large capacitors can hold a potentially dangerous charge long after a circuit has been turned off, so it is important to make sure they are discharged before you touch them. Suppose a 120 F capacitor from a camera flash unit retains a voltage of 140 V when an unwary student removes it from the camera. If the student accidentally touches the two terminals with his hands, and if the resistance of his body between his hands is 1.8 k, for how long will the current across his chest exceed the danger level of 50 mA?