Answer:
Brain cells start to die if they go without oxygen for just 3-4 minutes and that's exactly what happens during a stroke.
Explanation:
Stroke is an abrupt interruption of constant blood flow to the brain that causes loss of neurological function. The interruption of blood flow can be caused by a blockage, leading to the more common ischemic stroke, or by bleeding in the brain, leading to the more deadly hemorrhagic stroke.
Brain death can occur rapidly as cells begin to die off without any oxygen stores or new oxygen circulating to the brain.
The _____ strand of the opened DNA is easily replicated, but the ______ strand must be replicated in pieces because of it's orientation.
a. lagging; leading
b. leading; lagging
c. bottom; top
d. top; bottom
Answer:
B. Leading; lagging.
Explanation:
The leading strand is made as a continuous piece. The the lagging strand is made in small pieces.
Psychology. A group of scientists have created a new drug X that helps with anxiety.what is your hypothesis?
Answer:
The correct answer would be - hypothesis would be "If Drug X treats anxiety, then people who have anxiety and take Drug X should stop having symptoms.”
Explanation:
A hypothesis is an assumed or purposed explanation for a phenomenon on the basis of the available evidence at the beginning of the investigation. It required a scientific method to check if the hypothesis is true or not.
In the given case the most accurate hypothesis would be based on the fact that the drug X is helpful in case of anxiety and if it really helps such a patient then this drug should stop symptoms of anxiety.
In actuality, the DNA sequence of the human genome is NOT random. Some sequences, including some very large sequences, are repeated many times throughout the human genome. Write two ideas you have for how this fact complicates the use of CRISPR gene-editing technology in humans.
Answer:
repeated DNA sequences decrease the target specificity of the CRISPR-Cas system, and may lead to off-target effects
Explanation:
The CRISPR-Cas system is a versatile and powerful tool for gene editing. This gene-editing tool consists of a single guide RNA (sgRNA) that guides the Cas endonuclease protein to the appropriate genomic locus, where Cas generate a double-strand break in the DNA and thus induces DNA repair either by Non-homologous end joining (NHEJ) or Homologous Recombination (HR) repair pathways. The sgRNA consists of a 17-20 nucleotide sequence which is complementary to the target DNA, this sequence is called crispr RNA (crRNA). The existence of repeated DNA sequences hampers the specificity of the CRISPR-Cas tool because a particular sgRNA is able to guide Cas9 to different genomic loci that have the same (repeated) nucleotide sequence complementary to the crRNA. In consequence, repeated DNA sequences may lead to undesired off-target effects, i.e., unintended cleavage (and therefore unintended mutations) at untargeted genomic sites.
A trait that makes an individual different from other members of it species is called
Answer: An inherited trait that makes an individual different from other members of its species is called a variation.
A trait that makes an individual different from other members of it species is called variation.
What is trait?
Trait is defined as the physical or behavioral traits that are impacted by an organism's surroundings and are handed down to it genetically or through observation.
It can also be defined as a simple trait, also known as a character state, is a specific variation of an organism's phenotypic characteristic that can be inherited or acquired by environmental factors, but it usually results from a combination of the two.
There are basically five types of traits.
Mendel's pea plant traitsDog coat traitsMonogenic traitsPolygenic traitsBehavioral traitsVariation is defined as any genetic variation or the impact of environmental circumstances on the development of genetic potential that results in a difference between cells, individuals, or groups of organisms of any species.
Thus, a trait that makes an individual different from other members of it species is called variation.
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Consider, pea plants, for which green color is dominant to yellow color, and two leaves are dominant to three. A cross between two plants that are heterozygous green and heterozygous tall is completed. What is the phenotypic ratio? 1:1:1:1
9:3.3:1
1:3:3:9
9:1:3:3
Answer:
The phenotypic ratio is 9:3:3:1
Explanation:
Available data:
green color (G-) is dominant to yellow color (gg)G allele is dominant. g allele is recessivetwo leaves (T-) are dominant to three (tt)T allele is dominant, t allele is recessiveCross: between two plants that are heterozygous green and heterozygous tall
Parentals) GgTt x GgTt
Phenotype) Green color Green color
Two petals Two petals
Gametes) GT, Gt, gT, gt GT, Gt, gT, gt
Punnett Square) GT Gt gT gt
GT GGTT GGTt GgTT GgTt
Gt GGTt GGtt GgTT Ggtt
gT GgTT GgTt ggTT ggTt
gt GgTt Ggtt ggTt ggtt
F1) Genotype:
1/16 GGTT
2/16 GGTt
1/16 GGtt
2/16 GgTT
4/16 GgTt
2/16 Ggtt
1/16 ggTT
2/16 ggTt
1/16 ggtt
Phenotype:
9/16 G-T- --> Green-colored and two-leaved plant
3/16 G-tt ----> Green-colores and three-leaved plant
3/16 ggT---> Yelow-colores and two-leaved plant
1/16 ggtt ---> Yeloow-colores and three-leaved plant
Is colorblindness inherited from a persons parents or do they get it from the environment?
Answer:
The most common kinds of color blindness are genetic, meaning they're passed down from parents. If your color blindness is genetic, your color vision will not get any better or worse over time. You can also get color blindness later in life if you have a disease or injury that affects your eyes or brain.
Answer:
yes ,mostly colorblindness is inherited
Need some quick help with this:
Answer:
Explanation:
D
Answer:
option C
Explanation:
cellular respiration is the correct answer of this question.
plz mark my answer as brainlist plzzzz.
hope this will be helpful to you.
What is a real world example of a molecular pump in the human body?
Answer:
The most common example of a molecular pump in the human body is the pump for sodium and potassium.
Explanation:
Sodium ions and ATP bind to the pump to use energy to change the shape. The sodium then leaves and the potassium can now bind due to the shape change. The potassium ions are then released and the pump goes back to normal for the cycle to repeat again.
A women has blood type o, her baby has type a: is it possible that a man who has the blood type ab could be the father?
Answer: Yes it could
Explanation: type o is the type that can be donated to anyone and it is a rare kind and it's also dominated the father type ab is a type where it's not as dominant but it can take over there for the baby could be type a cause type o is rare to get.
please help me with this , thank you so much
Answer:
1)mitosis 2)meiosis 3)mitosis 4)meiosis 5)meiosis 6)mitosis 7)mitosis 8)meiosis specifically in prophase 1
Explanation:
In RNA processing, the coding sequence that remains
in the final mRNA.
A. exons
B. operon
C. genome
D. diploid
E. nucleosome
F. recessive
G. restriction enzyme
H. haploid
I. dominant
J. gel electrophoresis
Answer:
The answer is A. exons.
Explanation:
Exons-In RNA processing, the coding sequence that remains in the final mRNA.
Which element is the basis for all living things and can combine with other elements in many ways?
phosphorus
carbon
oxygen
sulfur
Answer:
Carbon is the most important element to living things because it can form many different kinds of bonds and form essential compounds.
Believe this ITS CARBON NOT OXYGENNNNN
Carbon is the basis for all living things and can combine with other elements in many ways. Hence, option B is correct.
What is the role of carbon in living organisms?Plants employ carbon to create their leaves and stems, which animals then eat and use for cellular growth. Gases like carbon dioxide are among the forms of carbon that are stored in the atmosphere. Additionally, many different marine species catch it and store it in the oceans.
Carbon serves as the fundamental building block for the majority of cells in the human body. The regulation of the body's physiology is another job for carbon. There are important biological activities that involve carbon in both plants and animals.
Thus, carbon is the basis for all living things and can combine with other elements in many ways. Hence, option B is correct.
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What are Hydrothermal Vents? Do they contribute to the saltiness of the sea? Why or why not?
Answer:
These vents contribute dissolved minerals to the oceans, which is one reason the oceans are salty. Rivers and surface runoff are not the only source of dissolved salts. Hydrothermal vents are recently-discovered features on the crest of oceanic ridges that contribute dissolved minerals to the oceans.
Hydrothermal vents form at locations where seawater meets magma
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You are curious about the dynamic instability of microtubules and decide to join a lab that works on microtubule polymerization. The people in the lab help you grow some microtubules using conditions that allow you to watch individual microtubules under a microscope. You can see the microtubules growing and shrinking, as you expect. The professor who runs the lab gets in a new piece of equipment, a laser beam that is very fine and can be used to sever microtubules. She is very excited and wants to sever growing microtubules at their middle, using the laser beam.
a. Do you predict that the newly exposed microtubule plus ends will grow or shrink? Explain your answer.
b. What do you expect would happen to the newly exposed plus ends if you were to grow the microtubules in the presence of an analog of GTP that cannot be hydrolyzed, and you then severed the microtubules in the middle with a laser beam?
Answer:
Follows are the explanation to the given points:
Explanation:
The polymerization of αβ-tubulin ligands costumes the microtubules. Among rising or reducing processes a microtubule may oscillate. Part of the carbon is a polar framework for two separate ends: a rapidly growing, most ending as well as a slow-growing less end.
In point a:
Severing a mitochondrial membrane throughout the media will create new "plus ends" or "minus ends." when mentioned in the question Then microtube is more prone to growth at most by adding GTP sub-units to some of the most open regions, where β-tubulin is activated. Even so, for some time GTP has also been hydrolyzed, keeping only one cap of the newly created, higher-end GTP-carrier subunits together with the remaining GDP-carrying cylindrical cap.
Consequently, a positive end is developed that consists of GDP subunits. Because the GDP sub-units become less strictly connected than that of the GTP sub-units, they eventually separate from one another. This allows a microtubule to be polymerized which causes the microtubule will shrink. But the newly exposed microtubule and sides will shrink if cut throughout the center.
In point b:
Well if the equivalent of GTP with such a microtubule is separated by laser from a non-hydrolyzable one, the newly exposed plus finish will include GTP carries. This GTP was NOT supplied with both the GDP kinase but would still expand the mitochondrial membrane. The unburned GTP plus microtubule will therefore continue to grow once it is cut in the center. The GTP equivalent is not hydrolyzable.
Agriculture has only a positive impact on the land.
True or False?
False; Agriculture can negatively impact the environment when fertilizer enters the water, contaminating it. Agriculture can also lead to deforestation, the lack of trees will lead to erosion.
What are two ways selective breeding is helpful in agriculture? A. It can take many generations to get desired traits. B. It can cause animals to inherit two recessive alleles C. It can produce crops that are resistant to pests. D. It can result in animals that can produce more food.
The two ways in which selective breeding is helpful are that it can produce crops that are resistant to pests and animals that can produce more food; these are options C and D.
What is the importance of selective breeding?Selective breeding produces plants and animals that are genetically modified to have a specific trait, such as animals being modified to produce higher-quality milk and meat or plants being modified to produce pest-resistant foods. This type of breeding and its resultant product are different from the wild type, and generally, these products are made for the commercial purpose of feeding a large population.
Hence, the two ways in which selective breeding is helpful are that it can produce crops that are resistant to pests and animals that can produce more food; these are options C and D.
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8. In snapdragons, red flower (R) color is incompletely dominant over white flower (1) color. The heterozygous (Rr)
plants have pink flowers.
A. If a red-flowered plant is crossed with a white-flowered plant, what are the genotypes and phenotypes
of the plants F1 generation?
B. What genotypes and phenotypes will be produced in the F2 generation?
C. What kinds of offspring can be produced if a red-flowered plant is crossed with a pink-flowered plant?
D. What kind of offspring is/are produced if a pink-flowered plant is crossed with a white-flowered plant?
Answer:
A. Genotypes: Rr
Phenotypes: All Pink
B. Genotypes in the F2 generation: RR, 2Rr, rr
Phenotypes: red, pink and white
C. 1RR (red): 1Rr (pink).
D. 1Rr (red) : 1rr (white).
Explanation:
This question involves one gene coding for flower color in snapdragon plants. The allele for red color (R) is incompletely dominant over the allele for white color (W), to form an intermediate pink color (RW).
A. If a red-flowered plant (RR) is crossed with a white-flowered plant (rr), the genotypes of the offsprings will be Rr with a pink color phenotype.
B. In the F2 generation i.e. Rr × Rr, the following will be produced: RR (red), 2Rr (pink), and rr (white).
C. if a red-flowered plant is crossed with a pink-flowered plant, the following will be produced: 1RR (red): 1Rr (pink).
D. if a pink-flowered plant is crossed with a white-flowered plant, the following will be produced: 1Rr (red) : 1rr (white).
How would you compare
and contrast physical and chemical properties?
Answer:
The Answer is in the Explanation Bellow
Explanation:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.
Answer: Chemical change produces a new substance, while a physical change does not. A material may change shapes or forms while undergoing a physical change, but no chemical reactions occur and no new compounds are produced.
Explanation:
How does carbon dioxide leave the atmosphere?
Explain how these terms work together IN TRANSLATION: mRNA, tRNA, codon, amino acid, and protein.
please help :( this assignment is due soon...
Answer:
The mRNA leaves the nucleus and travels to the ribosome where proteins are synthesized
Explanation:
During transcription, a messenger RNA (mRNA) molecule is synthesized from a specific DNA region which is referred to as a gene. Subsequently, the mRNA leaves the cell nucleus through the nuclear pores of the nuclear membrane and travels to the ribosome, where this sequence serves as template to synthesize a protein, in a process known as translation. Within the ribosomes, triplets of consecutive RNA nucleotides called codons bind to complementary RNA nucleotides (called anticodons) of the transfer ribonucleic acids (tRNAs). Each tRNA attaches a specific amino acid that corresponds to its anticodon sequence, which is then added to the nascent polypeptide chain.
If there are 21 boys and 42 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
We have that for the Question "If there are 21 boys and 42 girls in a room, fill out all of the possible ratios of boys to girls that could be made." it can be said that
the possible ratios of boys to girls that could be made are
21:421:210:205:10And any ratio that gives a ha
From the question we are told
If there are 21 boys and 42 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
Generally the equation for the Ratio is mathematically given as
x=21:42
Therefore
21:42
1:2
10:20
5:10
Therefore
the possible ratios of boys to girls that could be made are
21:421:210:205:10And any ratio that gives a half
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Question 18 of 20 :
Select the best answer for the question.
18. How has the use of herbicides affected agricultural productivity?
O A. Fewer pesticides are needed because of parasitoids.
OB. Fewer people are needed to weed because of herbicides.
O C. Fewer crops are produced because of herbicides.
O D. Fewer crops are organic because of the use of Bt toxin.
O Mark for review (Will be highlighted on the review page)
Answer:
B. Fewer people are needed to weed because of herbicides.
Explanation:
Herbicides are chemical substances specifically used to control the widespread growth of weeds i.e unwanted plants. Using herbicides has been useful in eradicating the weeds that pose a great threat to agricultural productivity.
Since chemical control (herbicides) has proven to be a faster and effective method, fewer people are needed to involve in the physical control of weeds i.e. weeding. Hence, the use of herbicides has affected agricultural productivity by helping to reduce the amount of laborers.
What are the 3 ways to dissolve a solute in a solvent? HELP!
Dissociation
Ionization
Aspiration
Dispersion
Answer:• Apply a strip of masking tape, about 3 inches long, to the outside of each jar. Label each vial in writing on the masking tape with the marker. Write the following labels: hot water, cold water, RT water, vinegar, alcohol.
• Add 1 cup of the appropriate liquid to each of the labeled jars. Wear eye protection when working with vinegar or alcohol.
• Add 2 tablespoons of sugar to the pitcher of cold water. Immediately start the stopwatch and begin to stir slowly until all the brown sugar is dissolved. Record how long the process took.
• Add 2 tablespoons of sugar to the jug of hot water, start the timer and stir the liquid at the same rate as in step 1 until all the brown sugar is dissolved. Write down how long it takes.
• Repeat the process of adding the sugar, stirring, and the time it takes for all the sugar to dissolve for the jugs of room temperature water, alcohol, and vinegar.
• Compare your results. Does sugar dissolve faster or slower from one solvent to another? Does sugar completely dissolve in each solvent? How did the temperature of the water affect the time it took for the sugar to dissolve?
Explanation:
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How is the nitrogen cycle important to humans?
OS
It produces free nitrogen that humans can breathe.
It converts nitrogen into a form that humans can obtain by eating other organisms.
It produces nitrogen compounds that humans can breathe.
It converts nitrogen into a form that humans can obtain by absorbing it through their skin.
Answer:
B. It converts nitrogen into a form that humans can obtain by eating other organisms.
Explanation:
Right for e2020
Some plants produce fruit which contains their seeds. How does producing fruit benefit the plant?
Answer:
The Answer is B
Explanation:
I got it right on my Bio hw
animal often carry the seeds away from parent when they eat fruit is a type of seed dispersal.
what is seed dispersal ?Seed dispersal can be defined as the process where the movement and spread of seed away from the parent plant by different carrier
Dispersing seeds there is less competition between seeds and The act of seed dispersal includes three phases such as departure, transfer and settlement
There are five different dispersal mechanism such as wind (anemochory) water (hydrochory), gravity (barochory), ballistic and dispersal done by animals (zoochory).
the most effective method was the zoochory, but today the most effective seed dispersal is the seed dispersal done by humans, because of the big technology boom.
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It maintains homeostasis by working with all body systems
A. Musculatory
B. Skeletal
C. Nervous
D. Digestive
Answer:
The answer is C. Nervous
Blease give me BRAINLEST
Answer:
C
Explaination:
Why are fossils not found in igneous rocks?
Igneous rocks are too dark in color to contain fossils.
Igneous rocks are found too deep underground.
Igneous rocks are made from cooling of lava or magma.
Igneous rocks are too dense to contain fossils.
Answer:Igneous rocks are made from cooling of lava or magma.
What happens during Go phase of the cell cycle?
O A. The cell splits in two.
B. The cell starts to die.
O c. The cell continues to live.
D. The cell makes new chromosomes.
Explanation:
The answer is C. because this is a new cell that is not preparing to divide or die..
Knowing that the genetic code is universal, scientists use molecular biological methods to insert the human beta-globin gene into bacterial cells, hoping the cells will express it and synthesize functional beta-globin protein. Instead, the protein produced was nonfunctional and is found to contain many fewer amino acids than does beta-globin produced by eukaryotic cells. Explain why.
Answer is given below :
Explanation:
When the beta-globin gene is inserted into the bacterial chromosome, during insertion, beta-globin forms a stop codon between the coding sequences of beta globin, resulting in a reduced amino peptide. Acid on translationFurthermore beta-globins form a tertiary protein complex with alpha-globin, which in addition to the ham-subgroup forms functional hemoglobin. Since we only put the beta-globin gene on the bacterium-chromosome that is not enough to make a functional protein, we found a non-functional proteinSevere storms all have extremely strong winds that can cause a lot of environmental damage.
Which storm below has the strongest winds?
O cyclone
O hurricane
O thunderstorm
O tornado
The storm that has the strongest winds is TORNADO.
A tornado can be defined as a narrow-violent rotating column of air in contact with the ground, which is often attached to the base of a thunderstorm.It is hard to observe a tornado unless it forms a condensation vertical wind tunnel composed of water droplets and dust. In the most violent tornadoes, wind speed may reach 300 miles (480 kilometers) per hour.In conclusion, the storm that has the strongest winds is TORNADO.
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Answer: its tornado i just took the test on edge2020 on the storm assignment.
Explanation: :)