Answer:
A mutation is a change in the nucleotide sequence of the DNA in a cell. ... Mutations can occur before, during, and after mitosis and meiosis. If a mutation occurs in cells that will make gametes by meiosis or during meiosis itself, it can be passed on to offspring and contribute to the genetic variability of the population.
Explanation:
hope this help....
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alexisatcher was not the imposter
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why are onion cells yellow?
Answer:
I believe they are actually white but onions can be yellow when they are old or when they turn bad
Which of the following structures assist the major structures of the digestive system?
A. gall bladder, small intestine, and liver
B .salivary glands, mouth, and esophagus
C. pancreas, gall bladder, and salivary glands
D. pancreas, stomach, and large intestine
Answer:
that would be C. pancreas, gall bladder, and salivary glands
Dylan wants to observe some onion cells with a microscope. He places the cells on a slide. Describe how Dylan uses the microscope so he can see the cells with a ×20 objective lens.
Answer:
See the answer below
Explanation:
After routinely cleaning the microscope and ensuring that all the parts are working fine, Dylan would have to place the slide on the stage of the microscope, switch on the light source, and adjust the diaphragm of the condenser to ensure that adequate light gets to the slide on the stage.
Thereafter, Dylan would need to turn the revolving nosepiece in order to shift to the lowest objective of the microscope assuming it is not already in place. Then, the slide on the stage is brought into focus (by viewing through the eyepiece/ocular) by using the coarse/fine adjustment knob to bring the stage up/down.
Once the slide is brought into clear focus, the revolving nosepiece is then turned to switch the x20 objective. Generally, at higher objectives, the coarse adjustment knob is rarely needed and the fine adjustment knob is solely used instead to bring the slide back into focus. Thus, Dylan can see the cells of the onion at the desired objective.
Answer:
i dont know
Explanation:
yeah
The amount of Cytosine plus Guanine is 40%. What would be the amount of Adenine?
Answer:
30%
Explanation:
Considering that the amount of Cytosine added to the amount of Guanine is 40%, that explains that Cytosine and Guanine each equal to 20%.
Cytosine: 20%Guanine: 20%Now, the remaining bit is 60%. Since Adenine and Thymine both equal the same, that would mean: 60/2 = 30.
Adenine: 30%Thymine: 30%Cytosine and Guanine pair together and will always be equal to one another. The same goes for Adenine and Thymine. (A=T, C=G)
Always remember that you want it to total up to 100% at the end.
8) What is the term for someone who is near sighted?
A) glaucoma
B) myopia
C) astigmatism
D) hyperopia
I need help with this work sheet please
Answer: 1. I would choose BbEe(black) and bbEe(chocolate) because when they crossover each other, one of the possibilities is bbEe which would be a yellow dog.
2. Yes, because when you cross the two, you will get at least 1 of each color as a result.
3. BE, Be, bE, be
4. When crossing BBee and bbee, the result was Bbee which is also a yellow dog.
5. I would not want BbEe.
6. When you cross bbEe and BBEE, the probability for a black dog would be 16/16. The other colors would be 0/16.
Explanation: If you need more help or have any questions, feel free to message. :3
Please help... This is middle school stuff. It'll be easy for you.
Answer:
Volcano eruptions-when one plate is submerged below another, it melts and goes back to the surface as magma and creates a volcano
Earthquakes- when 2 plates slide against or hit each other
Seafloor spreading- where divergent plates move away from esch other, magma goes up to the surface and solidifies
Mountain formation- When two convergent continental plates hit each other. Continental plates are light so instead of submerging, they both rise higher to the surface and creates high land(mountains)
HOPE THIS HELPS!!!!
Individuals That are well adapted to their environment will survive and produce what
Can anyone help me fast with my homework??
Answer:
A pH scale measures how acidic or basic a substance is.
Explanation:
The pH measures the H+ concentration in a substance. The more lower the pH, the more acidic the substance, the higher the pH, the more basic the substance. It measures from 0-14, with 7 being neutral. Anything less than 7, acidic. Anything above 7, basic.
If I helped, a brainliest answer would be greatly appreciated!
7. Challenge yourself: You have already learned that mutation is one source of
variation in a population. Based on what you have just seen, what is a second
source of variation?
(I just need more information or explanation) please
Answer:
Natural selection would be the other source because organisms that have a beneficial trait will live, but organisms that do not have a beneficial trait might die. So the organsims that do survive will reproduce and pass on those traits to their offspring. Eventually all the organisms that do not have a beneficial trait will die out, leaving most of the population having that beneficial trait.
Environmental science
Answer:
asdasd as
Explanation:
dasdadsad
Please answer as soon as you can
Answer:
Differences in air temperature cause movement in the air, which creates pressure.
The radiant energy from the Sun is transferred to the atmosphere, causing air movement. The air becomes less dense, so it rises.
As the air falls, it becomes more dense and cools to Earth’s surface.
The higher the latitude, the colder the climate; the lower the latitude, the hotter the climate.
The _____________ caused the movement of people to more urban areas.
Answer:
The growth of cities.
What does a tumor and uncontrolled growth cause in the cell cycle?
A cell uses a molecule to transfer energy from the chemical reactions of cellular respiration to other chemical reactions within the cell. Which molecule fulfills the role of a short-term energy transfer molecule?
Answer:
ATP
Explanation:
This fulfils the role of short term energy transfer molecule
Answer:
a)
Explanation:
ATP is the answer of this question
A mother with the genotype
Aa displays the dominant
version of the trait. Her
husband displays the
dominant version of the trait.
What version of the trait
would their child display?
A. The child would display the recessive
trait.
B. The child would display the dominant
trait.
C. The child would display some of the
dominant trait and some of the recessive
trait.
D. We need more information about the
father's genotype.
More information is needed about the father's genotype before the version of the trait that would be displayed by the child can be predicted (option D).
What is genotype?Genotype is the part (DNA sequence) of the genetic makeup of an organism which determines a specific characteristic (phenotype) of that organism.
The genotype responsible for a trait in an organism is usually in pairs or versions called alleles. The allele can either be dominant or recessive depending on whether it is expressed or masked respectively.
According to this question, a mother with the genotype "Aa" displays the dominant version of the trait. Her husband also displays the dominant version of the trait.
However, the exact genotype of the father is required to be able to predict the genotypic outcome of their offsprings.
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When plants perform (photosynthesis OR breathing) they take carbon dioxide out of the
atmosphere and release oxygen.
Answer:
Photosynthesis
Explanation:
Plants perform photosynthesis in the chloroplasts. They take in carbon dioxide and release oxygen.
QUICK I NEEE HELP !!!
Answer:
All cells come from existing cells
Explanation:
only answer that is part of the cell theory as far as i know
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
Its the 3 one
Answer:
I'm pretty sure the answer is that they are in the same biological classification
Explanation:
this is the answer because they evolved from a common ancestor.
Do the people at T mobile keep your browser history and things like that??
Answer:
2x - 9y = 23
5x - 3y = -12x - 9y = 23
5x - 3y = -12x - 9y = 23
5x - 3y = -12x - 9y = 23
5x - 3y = -12x - 9y = 23
5x - 3y = -12x - 9y = 23
5x - 3y = -1
Explanation:
1
A type of mountain formed when magma collects beneath an overlying rock layer, forcing the layer upward
into a blister-like structure is known as a
type of mountain formed when magma collects beneath an overlying rock layer, forcing the layer upward into a blister-like structure is known as a .
-domed mountain
A type of mountain formed when magma collects beneath an overlying rock layer, forcing the layer upward into a blister-like structure is known as a domed mountain.
What is magma?Magma has been defined as the molten or the semi-molten material which is natural and from magma all igneous rocks are formed. Beneath the surface of the earth magma has been found and there are very proofs of magmatism and it has been observed on the other terrestrial planets as well as some of the natural satellites.
Sedimentary rocks are generally made up from directly heat and these are formed when deposition or accumulation of particles that are organic or minerals at the surface of Earth, later followed by the process of cementation. The main feature of sedimentary rock is that they are formed in multiple layers.The rocks are made up of more than one mineral and the size of some rocks are small or big it depends upon their constituents.
Therefore, A type of mountain formed when magma collects beneath an overlying rock layer, forcing the layer upward into a blister-like structure is known as a domed mountain.
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If you answer this can you try to make it your own words thank you!
Answer:
wut?
Explanation:
Ok, so first Biology is something I love
Hope that makes sense
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
B. Evidence from rock layers, fossils, and ice cores.
Explanation:
Right i believe
Answer:
Its the 4th one. I think. Its the 2nd or third but can't tell for sure. When I searched it, the result came as followed: "Plate tectonics shift the continents, raise mountains and move the ocean floor." So yeah. Hope this somewhat helps.
Explanation:
Please help I need the answer ASAP
Answer:
I am guessing Cenozoic
Explanation:
I hope this helps
Explanation:
the answer is A. I'm sure of it
What one characteristic separates both Archaea and Bacteria from the other kingdoms?
A.
prokaryote
B.
heterotrophs and autotrophs
C.
eukaryote
D.
unicellular
Answer:
C. hope it helps.......
PLEASE ANSWER ASAP A certain plant tissue, typically found in the stem and in the hard outer covering of seeds, contains very thick, rigid cells. Which of the following correctly identifies this tissue and its function?
A. meristem tissue; gamete formation
B. dermal tissue; structural support
C. ground tissue; production of sugar
D. vascular tissue, transportation of materials
Answer:
ground tissue;production of sugar
What are two types of evidence that have helped biologists determine the ancestors of modern humans
Answer:
The evolution of modern humans consisted of fossils, direct observation, anatomy, and molecular biology.
The photo shows many similar cells that work together. Which level of organization in living things does this photo represent? O A. Organ system O B. Organism O C. Tissue O D. Specialized cell
Answer:
So it would be c i think this because if all the cells are working to gether to form a certain function that would make up tissues!
Are there any species that you know of that are now extinct? How might the world be different if they still existed on Earth?
Answer:
the pinta giant tortoise
the ecosystem would be healthier in the area they come from
Explanation:
giant tortoises perform many critical roles in shaping healthy ecosystems, such as dispersing seeds of native plants and creating open pathways where other animals and plants can thrive.
good luck :)
hopefully, this helps
have a great day !!
What would happen to an ecosystem if an invasive
species has no predators? Explain in detail.
Please help!!!!!!!!!!
Explanation:
the top predator is removed from the delicate balance of any particular ecosystem, there may be disastrous effects for the other plants and animals that inhabit the environment.
When a top predator is removed from an ecosystem, a series knock-on effects are felt throughout all the levels in a food web, as each level is regulated by the one above it. This is known as a trophic cascade. The results of these trophic cascades can lead to an ecosystem being completely transformed. The impacts trickle down through each level, upsetting the ecological balance by altering numbers of different animal species, until the effects are finally felt by the vegetation
When a top predator is no longer present, populations of their herbivorous prey begin to boom. Without a top predator to regulate their numbers, these animals put a great deal of pressure on the existing vegetation that they require for food and can destroy large amounts of plant life, such as grasses and trees. This then causes further problems, such as soil erosion and loss of animal habitat. Eventually, humans are also impacted due to the resulting lack of soil fertility and clean water that depend on these plants.
Another problem involving the loss of vegetation is the competition that is created between herbivorous species. Competition between species for the remaining plant life is high and weaker species lose out to stronger ones, leading to the potential loss of weaker animals, as well as plant species. Increased competition, therefore, leads to a lack of biodiversity. In contrast, top predators often have varied diets, which means they can pursue a new food source if one is running low, preventing the first source from being eradicated completely. This is one of the ways that top predators are able to maintain biodiversity and the balance of an ecosystem.
The presence of a top predator also helps to maintain balance in an ecosystem by influencing the behaviour and movements of its prey through the fear of being caught. Animals that are prey to a top predator will move around in order to avoid it. This prevents plants and animals in any particular area of an ecosystem from being over-consumed, preserving food sources and habitats. In the absence of top predators, this regulation disappears, allowing certain areas of vegetation to be destroyed completely.
Answer:
That species would likely run rampid, due to it having no predators. The ecosystem may eventually recover, but it won´t be the same.
Explanation:
:) trust me!