Answer:
The nucleus is an organelle found in most eukaryotic cells, the exception being red blood cells. ...
The primary functions of the nucleus are to store the cell's DNA, maintain its integrity, and facilitate its transcription and replication.
PLEASE HELP ME !! THIS IS A TEST!! PLEASE!!!!
Under normal conditions, gases diffuse through small holes in the leaves of a plant. when the weather hot and dry, plants may close these openings to conserve water. how are the closures most likely to affect photosynthesis?
A.) They increase the rate of photosynthesis by increasing the amount of water in the leaf
B.) They have little or no effect on photosynthesis because gases do not take part in the process.
C.) they increase the rate of photosynthesis by increasing the amount of oxygen in the leaf
D.) they decrease the rate of photosynthesis by preventing carbon dioxide from entering the leaf
PLEASE HELP ME!! PLEASE ANS THANK YOU!!!
Answer:
A) They increase the rate of photosynthesis by increasing the amount of water in the leaf.
Which of the following BEST explains how scientists are able to determine the
structure of Earth's interior?
1) Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface.
2)Drilling deep within the Earth.
3)By cutting into other terrestrial planets.
4) Our modern knowledge of the Earth's interior is just a guess that many scientists have accepted.
Answer:
I think number 1 is the answer.
Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface. The correct option is 1.
What are seismic waves?Seismic waves are caused by sudden movement of materials within the Earth, such as fault slip during an earthquake.
Seismic waves generated by earthquakes or explosions can travel through the Earth's interior, revealing information about the properties of the rocks and other materials they pass through.
In addition to seismic data, scientists use other indirect methods such as magnetic and gravitational field studies, as well as analyses of rocks and minerals found at or near the surface.
Scientists collect indirect evidence by observing seismic waves (Earthquakes) as well as what is visible on the Earth's surface.
Thus, the correct option is 1.
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How are plants important in maintains oxygen levels
they make oxygen and so we don't die from too much oxygen
How does carbon from corn end up in human hair?
So if we eat a particular kind of food, and it has a particular kind of carbon in it, that's recorded in us, in our tissues, in our hair, in our fingernails, in the muscles
Explain how mitosis
maintains the chromosome number of the
original cells when forming new cells.
Mitosis is a type of cell division that helps to maintain the chromosome number of the original cells by dividing cells that previously duplicate their genetic material (DNA) during the interphase (S phase).
The cell cycle is divided into the interphase and the mitotic (M) phase.The interphase of the cell cycle is in turn divided into three different phases: Growth 1 (G1) phase, Synthesis (S) phase and Growth 2 (G2) phase.During the S phase, the chromosomes (i.e., the genetic material) of a cell are duplicated.Mitosis is a type of cell division that follows the interphase of the cell cycle by which a somatic (body) cell divides to produce two genetically identical daughter cells.In conclusion, Mitosis is a type of cell division that helps to maintain the chromosome number of the original cells by dividing cells that previously duplicate their genetic material (DNA) during the interphase (S phase).
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The different forms of a characteristic
1) A region of the country is rapidly growing in population, causing the demand for electricity to go up each year. As a result, a new source of electricity is needed. This particular region of the country has plenty of agriculture, rivers, and access to coal deposits underground. Which of the following would be the cheapest way for this region of the country to make electricity, have minimal impact on the environment, yet not add carbon dioxide to the atmosphere?
Group of answer choices
A)Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
B)Use the coal deposits to generate electricity in a few coal fired facilities
C)Build a nuclear power plant in the middle of the region
D)Build dams along the rivers to generate electricity
2)The image provided shows a partial river food web.
The local town relies on this river ecosystem to sustain their population both economically and as a source of food. Using the food web provided, which statement provides the best reasoning for regulating the amount of fish removed from the river by humans.
Group of answer choices
A)Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
B)Regulation will increase the amount of energy transferred from the catfish to the eagle.
C)Regulation will allow contaminated sediments to decrease in the river due the removal of the contamination source.
D)Regulation will ensure that carp will not overpopulate the ecosystem and begin to consume larger organisms like the salmon.
Answer:
The cheapest way for the country to make electricity would be
A) Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
The statement provides the best reasoning for regulating the amount of fish removed from the river by humans is:
A) Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
Explanation:
For the electricity, the use of Biomass meets the demands due to the fact that, it has minimal impact on the environment, does not add carbon dioxide to the atmosphere. Also, it is renewable form of energy.
For the regulation of the amount of fish removed from the river helps to maintain the ecosystem balance. If it was not done, the fishes found in the river will be totally harvested thereby disrupting the chains in that river ecosystem.
what are the 3 negative effects of global warming/climate change ?
Answer: Effects on weather. Global warming leads to an increase in extreme weather events such as heat waves, droughts, cyclones, blizzards and rainstorms. Such events will continue to occur more often and with greater intensity.
Explanation: nothing to see at this point ;)
Answer:
The ice is melting specially at the earth's pole. This includes moungain glaciers . Much of this melting ice contributes to increse sea-levels.Hlonal sea levels are rasing 0.13 inches a year.Rasing temperature is also an effect oc vloba warming . This causes to the wildlife.
Write four moral duties you perform every day.
Answer:
i help family in home
i read a book
i work sport
Answer:
Respecting Religion.
being truthful.
being honest
being careful wen speaking to anyone.
Explanation:
Name two possible causes of the largest mass extinction in Earth’s history and explain how this both helped and hurt different species.
Answer:
Explanation:
Two possible causes for the biggest mass extinction event in the history of our planet would be an asteroid impacting the planet and the massive volcanic activity. This mass extinction event is called the Permian-Triassic extinction. This helped many species emerge as survivors and thrive without the oppressive bigger species that died out. It hurt many species that were unable to survive the harsh conditions that resulted from everything that was happening to their habitats and food sources.
Wilting
Stimulus = _______________ Response = ____________________________________________
A not enough water or overwatered, plant stem and leaves are flaccid or droopy
B excessive watering, plant cell vacuole shrinks
C too much sunlight, roots grow downwards
D too much light, plant leaves turn brown
The remora fish attaches itself to sharks for transportation and access to food scraps. The shark is not harmed. What type of example is this?
Answer:
That shark is trained by human
Sorry this is late: You didn't put the answer options, but I was on this question, so the correct answer is commensalism. Don't forget to put the answer options, or no one will understand it. Good luck with the rest of your work!
PLEASE HELP EHHHHHH );
Answer:
1
Explanation:
Answer:
The answers are 1 and 3.
Explanation:
Viruses are tiny particles, smaller than prokaryotic cells. Viruses are not cells and cannot replicate without help, but they have nucleic acids and can evolve.
Hope that helps and please give me brianliest!!
20 points for right answer only (dont put a random answer or you will be reported)
Answer:
25%
Explanation:
let me know if im right
Answer:
50%
(sorry about my handwriting)
If the father has type o blood, the children will have to be either A or B (you can mostly ignore the i's)
A girl is born with hemophilia. Her dad also has hemophilia, but her mother does not.
What genetic explanation can you provide as to why the girl
suffers from hemophilia?
answer:
So daughters get 2 X chromosomes from the mom and dad and if the dad has hemophilia the daughter would get it too and sons would not get because they get Y chromosome from their dad and hemophilia is found in the X chromosome because the X chromosome is the one that has the instructions for making the clotting factor proteins.
Explanation:
A father who has hemophilia has the gene and passes it on to his daughter because daughters get two X chromosomes, one from their mother and the other from their father. This is why daughters of men with hemophilia are called obligate carriers. Since sons only receive a Y chromosome from their father, they would not have inherited hemophilia.
Hope this make sense!
What is the function of Fat cells
How do photoautotrophs make energy?
O They convert carbon dioxide, water, and inorganic compounds into carbohydrates.
O They convert carbon dioxide, water, and organic molecules to carbohydrates.
O They convert carbon dioxide, sunlight, and organic molecules to carbohydrates.
O They covert carbon dioxide, water, and sunlight into carbohydrates.
Answer:
c
Explanation:
Which organ system supplies the body with oxygen? *
Answer: It would be the resperatory system. Your lungs are the main part of that.
Explanation:
Answer:
The respiratory system
Explanation:
The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. It consists of the nose, larynx, trachea, diaphragm, bronchi, and lungs.
Answer and will give brainliest and 10 points
Answer: I don't know if this is right but I think it is
b. at the organ level
Explanation:
What is a volcano?
A. a tall mountain
B. a chemical reaction that produces fire
C. an atmospheric condition
D. an opening in Earth’s crust
Answer:
c
Explanation:
Answer:
D
Explanation:
I hope this is correct and have a great day
Neurons are cells of the nervous system. As part of its normal function, a
neuron pumps sodium ions (Na + ) out of the cell and potassium ions (K + ) into the cell. Which statement describes the role of energy in this process?
a. The process releases energy that is used to make ATP.
b. The process releases energy in the form of heat.
c. The process requires energy that is provided by the sodium and potassium ions.
d. The process requires energy that is provided by ATP.
Thank you! :)
Answer:
D. The process requires energy that is provided by ATP.
Explanation:
Neurons use a pump called the sodium-potassium pump, which normally pumps sodium ions out of the cell and pumps potassium ions into the cell.
This pump goes against the concentration gradient to create the resting membrane potential.
Since the pump goes against the concentration gradient, it requires energy, because it is not passive diffusion.
So, D is the correct answer, as the process requires ATP energy.
Neurons are cells of the nervous system. As part of its normal function, a
neuron pumps sodium ions (Na + ) out of the cell and potassium ions (K + ) into the cell. The process requires energy that is provided by ATP. The correct answer is option D.
What is the role of sodium potassium pump ?The role of the sodium potassium pump is the muscle contraction and the nerve impulse. In exchange of 2 potassium ions is the displacement of 3 sodium ion and this exchange is against the concentration gradient thus requires the molecule of ATP for the transfer of the ions.
The Na+/K+-pump an active transporter uses ATP hydrolysis in energy source to move ions across the neuronal membrane down their concentration gradients and assigned specific functions associated with the generation of the action potential as well as with the maintenance of other active transport.
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what is meant by ecosystem diversity?
Answer:
Ecosystem diversity deals with the verity in ecosystems within a location and its overall impact on human existence and the environment.
Explanation:
An example of ecological diversity on a global scale would be in different verity ecosystems, such as deserts, forests, grasslands, wetlands and oceans. Hope this helped and have an awesome day! :)
PLEASE I WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST
WORTH 30 POINTS
Answer:
the second one is 1, the first one is 3, the last one is 5, the fourth one is 2 and the third one is 4
is a gamete a brain cell
Answer:no it’s not a brain cell it’s part of the reproductive system I think
Explanation:
GUYSSS HELPP, ILL MARK YOU BRAINLYYY
Explanation:
1 light energy
2 chemical energy
3 chemical energy
4 light energy
Answer:
1, Light energy
2, Chemical energy
3, Chemical energy
4, Light energy
Bart thinks mice exposed to microwaves will get stronger (maybe he's been reading too much Radioactive Man). You decide to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to 10 other mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse's food. found that 8 out of 10 of the microwave mice were able to push the block. 7 out of 10 of the mice without microwaves were able to do the same.
identify
1. control group
2. independent variable
3. dependent variable
4. what are some of the mentioned control variables?
5. what should bart's conclusion be?
Answer:
Control group = mice that had not been exposed
Independent variable = Mice receiving radiation
Dependent variable = Number of mice that are able to push the block of wood.
Control variables = Health of mice, mass of block
Radiation does not have effect on strength of the mice
Explanation:
In an experiment the variable which changes with respect to the other variable is called the dependent variable and the other variable is called the independent variable.
The control group is the group that does not receive treatment which is used to compare the effect of the treatment.
The control variable is another variable that must be held constant when performing the experiment.
Here the
Control group = mice that had not been exposed
Independent variable = Mice receiving radiation
Dependent variable = Number of mice that are able to push the block of wood.
Control variables = Health of mice, mass of block
It was found that 8 out of 10 of the microwave mice were able to push the block. 7 out of 10 of the mice without microwaves were able to do the same. This means that there was no significant difference hence, the conclusion drawn should be that radiation does not have any effect on their strength.
In humans type A blood is caused by the antigen A in the red cells resulting from gene A. Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood. If a person of blood group AB marries one belonging to blood group O what will be the blood groups of their children? Show the Punnett square for this cross.
Answer:
Type A and type B
Explanation:
This question is describing blood type in humans. According to the question, type A blood is caused by the antigen A of gene A while Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood.
If a person of blood group AB i.e. genotype (iAiB) marries one belonging to blood group O (genotype ii), the following genotypes of offsprings will be produced (see attached image for punnet square):
iAi - blood type A
IBi - blood type B
List 3-5 important facts that highlight Gregor Mendel's work and contribution to genetics
Which statement describes the relationship between minerals and rocks?
Minerals and rocks are the same.
Aggregates of minerals form rocks.
Minerals determine the texture of a rock.
Most rocks are made of a single mineral type.
I will give brainliest
Minerals determine the texture of a rock.
does the moon have phases that change on a monthly basis