Answer:
B
Explanation:
veins contain valves that ensure blood flows in only one direction.
What are three ways you can reduce the risk of contracting a bacterial disease?
I will give you Brainly just answer please!!
Answer:
Warding off germs and infection
Warding off germs and infectionYou can prevent infections through simple tactics, such as washing your hands regularly, avoiding close contact with people who are sick, cleaning surfaces that are touched often, avoiding contaminated food and water, getting vaccinations, and taking appropriate medications.Warding off germs and infectionYou can prevent infections through simple tactics, such as washing your hands regularly, avoiding close contact with people who are sick, cleaning surfaces that are touched often, avoiding contaminated food and water, getting vaccinations, and taking appropriate medications.
When scientists compare molecular clocks between species, they
have to use the same segment of DNA. Which of these statements
would explain why that is necessary?
A. Not every segment of DNA mutates.
B. Different genes mutate at different rates.
C. Species accumulate neutral mutations at random rates.
D. All mutations cause harmful effects.
Check Answer
Answer:
ITS B: DIIFERENT GENES
Explanation:
Answer:
Yeah same here
Explanation:
The reason is mutation rates differ between species and even between different regions of the genome of a single species. These different rates of nucleotide substitution are measured in substitutions (fixed mutations) per base pair per generation.
Is electricity a "green " energy resource ? Explain why or why not.
Answer:
The U.S. voluntary market defines green power as electricity produced from solar, wind, geothermal, biogas, eligible biomass, and low-impact small hydroelectric sources. ... Such fuel sources include the sun, wind, moving water, organic plant and waste material (eligible biomass), and the earth's heat (geothermal).
Explanation:
PLEASE MARK ME AS BRAINLIEST
Aaron is learning about genetics in science class, and he made a list about what he learned
. An example of a trait is blue eyes
Genes are always passed from offspring to parents
• Traits can be common and uncommon in populations.
. Genes determine most physical traits
Aaron made a mistake on his list. Which of these statements fixes Aaron's mistake
Answer:
Genes are always passed from offspring to parents
Explanation:
Well parents pass on genes to an offspring for one for another the parent will not always pass a gene for a certain trait on, if the trait is not a dominate gene it has the chance of getting replaced by the other parent's more dominate trait
what industry is widely known for the uses synthetic organic compounds?
Answer:
Synthetic Organic Compounds are widely used for pest control. They are in a lot of pesticides and insecticides.
I'll give brainliest
Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct?
Brody is correct because the wave involves an input of energy.
Ethel is correct because energy is not carried from one place to another.
Brody is correct because the pattern repeats.
Ethel is correct because the motion has no pattern.
Answer:
I think its the first one
Explanation:
If not then its the 3rd one
Answer:
its B
i know this for a fact
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Humans depend on ecosystems for ecosystem services and
resources. For example, this river ecosystem provides water, fish,
and a place to swim. The forest ecosystem provides wood, shade,
and erosion control. Choose a resource and describe the possible
effects of its use on society and on ecosystems throughout its life
cycle.
Answer:
Oil.
Explanation:
Oil is a resource which has a great impact on our society because it is widely used in our daily life in the engine of vehicles. It is very necessary in the transportation sector but also adversely affected the ecosystem and the animals and plants living in that ecosystem due to production of harmful gases such as carbondioxide and carbonmonoxide gases that polluted the environment and affect the health of people.
5: What does water have to do with our metabolism?
Answer:
Studies have shown that drinking 17 ounces (0.5 liters) of water increases resting metabolism by 10–30% for about an hour ( 22 , 23 ). This calorie-burning effect may be even greater if you drink cold water, as your body uses energy to heat it up to body temperature ( 21 , 24 ). Water can also help fill you up.
Answer:
Studies have shown that drinking 17 ounces (0.5 liters) of water increases resting metabolism by 10–30% for about an hour ( 22 , 23 ). This calorie-burning effect may be even greater if you drink cold water, as your body uses energy to heat it up to body temperature ( 21 , 24 ). Water can also help fill you up.
Explanation:
Hope this helps.
What is a convergent boundary? How do plates interact with eachother? (due in 10 minutes please help)
QUICK PLEASE HELP!! *** EARTH SCIENCE ****
Answer:
wot
Explanation:
The volume of this aquarium is ?
Answer:4200cm
Explanation:
The equation for this is length times width times height
12 times 25 times 14 is 4200
Answer:
ewan po hahahaha sorry ok
Which statement is the most accurate regarding the first stage of photosynthesis?
Answer:
1. A 2.B 3.B 4. C 5.5.
Explanation:
There are giraffes that show an incomplete dominance in neck size. A giraffe with a tall neck (TT) is
crossed with a giraffe with a medium neck (TS). What fraction of giraffes will also be tall?
A 50%
B 100%
C 25%
D 75%
HELPPP
Answer:
The Correct answer is 50%
Explanation:
The gametes produces are T, T by 1st parent and T, S by 2nd parent
T T
T TT (tall) TT (tall)
S ST (medium) ST (medium)
So, the fraction of giraffes that are tall = [tex]\frac{2}{4} = \frac{1}{2}[/tex] = 0.5×100% = 50%
So, The Correct answer is 50%
Cells require a structure that regulates the transfer of material in and out of the cell. This structure is the –
Cells require a structure that regulates the transfer of material in and out of the cell, and this structure is the cell plasma membrane, as substances can go in or out of the cell such as oxygen, water, etc.
What is the purpose of the cell plasma membrane?The cell plasma membrane's purpose is to protect the cell from outside materials such as matrix proteins, pathogens, and so on, as well as to give the cell the proper shape and size, and at the same time it consists of many channels, pumps, etc. Through the channels, the substance can flow in and out of the cell plasma membrane, and the energy may or may not be needed for the movement.
Hence, cells require a structure that regulates the transfer of material in and out of the cell, and this structure is the cell plasma membrane, as substances can go in or out of the cell such as oxygen, water, etc.
Learn more about the cell plasma membrane here.
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What does this article reveal about the role Black inventors have played in America's history? Explain your answer.
Answer:
The article revealed the fact that Black inventors have always played an active role in inventing new things in America. In the 18th and 19th centuries they were denied the right to patent their inventions because of their status as slaves. This has changed for the better in present times as many Black inventors are being granted patent rights.
Explanation:
The article, "America’s always had black inventors – even when the patent system explicitly excluded them", by Shontavia Johnson, explained the active role that Black Americans, both free and slaves played in inventing things in the United Slaves. The article explained that although the patent rights signed into the constitution in 1787 was written in a neutral tone, it did not change the fact that black inventors were actually denied patent rights.
This segregation affected people like Henry Boyd, Ned, Benjamin Montgomery among others. In recent times, this segregation has significantly been curbed as many Black inventors are now owners of patents. An example is Lonnie Johnson, inventor of the Water Gun and owner of more than 80 patents.
Answer: The article revealed the fact that Black inventors have always played an active role in inventing new things in America. In the 18th and 19th centuries they were denied the right to patent their inventions because of their status as slaves. This has changed for the better in present times as many Black inventors are being granted patent rights.
Explanation: To be Honest
Question 9 (1 point)
In peas, long stem (A) is dominant over short stem (a). A heterozygous, long stem plant (Aa) is crossed with a homo-zygous, short stemmed plant (aa).
Which of the above squares represent plants that are heterozygous?
Question 9 options:
Box 1
Box 1 and box 2
Box 1 and box 3
Box 2 and box 3
Answer:
Box 1 and 3
Explanation:
Box 1 represents the allele Aa
Box 2 represents the allele aa
Box 3 represents the allele Aa
Box 4 represents the allele aa
So the answer is Box 1 and 3 because Aa is a heterozygous allele and aa is a homo-zygous allele.
A cross among individuals with contrasting variations at one locus for the attribute is called a monohybrid cross. Each parent provides one type of allele or a trait to their offspring.
Monohybrid cross can be shown using the Punnett square, to determine the probability of a progeny expressing that genotype.
The correct answer is :
Option C. Box 1 and box 3
The reason for the answer is:
1. Box 1 will produce offspring with genotype: Aa
2. Box 2 will produce offspring with genotype: aa
3. Box 3 will produce offspring with genotype: Aa
4. Box 4 will produce offspring with genotype: aa
Therefore, Box 1 and Box 3 represents heterozygous alleles, whereas box 2 and box 4 represents purebred alleles.
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RNA is a molecule with characteristics and a role similar to DNA. Why is RNA necessary for DNA to fulfill its function?
Answer:
Like DNA, RNA (ribonucleic acid) is essential for all known forms of life. ... Messenger RNA (mRNA) carries the genetic information that directs the synthesis of proteins. Some viruses use RNA instead of DNA as their genetic material. Most of the RNA, however, does not code for proteins.
The RNA necessary for DNA to produce proteins that do all work in the cell system.
Transcription:
It is the process by which DNA form mRNA via the RNA Polymerase.
This mRNA is translated into the proteins bythe Ribosome. tRNA bring Amino acids to the ribosomes to produce protein chain.Therefore, the RNA necessary for DNA to produce proteins that do all work in the cell system.
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Biology it’s due today pls help
Answer:
Labelled diagram of air travel to aloevia hope it will help you
What affects do an insertion mutation have on a DNA strand?
How do erupting volcanoes change landforms? Answers:
A. Erupting volcanoes become flat and form plateaus.
B. Hot lava erodes rocks and makes mountains smaller.
C. Cooled lava forms layers of rock that can become Islands.
D. Cooled lava forms soil that supports animal and plant life on plains.
I would say b Answer:
Explanation:
Because of the heat the mountains will slightly melt which changes their size and shape
Random mutations may occur because a change in the order of nitrogen bases in a codon. One type of mutation involves a substitution of one of the nitrogen bases in a codon. What amino acid is called for by GGA codon?
Answer:
Alanine
Explanation:
Using the codon chart (see the attached image), that is, a chart of triplet codes and the corresponding amino acids that they represent, the amino acid called for by GCA codon is alanine.
There are 64 possible codons in nature from 4 nitrogen bases - adenine (A), guanine (G), cytosine (C), and uracil (U). The codes are degenerates because they represent only 20 naturally occurring amino acids. Hence, more than one codons codes for each amino acid. Apart from GCA, other codons that translate as alanine include GCU, GCC, and GCG.
Hii..
Plzz answer..
Note the relationship between the first two words and suggest the suitable word(s) for the fourth place.
Ques. - Axons : Nerve :: Cytons : .......
BB, Bb and bb are examples of?
dominant
recessive
genotypes
phenotypes
BB, Bb and bb are examples of genotypes. Thus, the correct answer is genotype.
A genotype is the genetic constitution of a trait in an individual. It is the genotype that results in the particular phenotype. Phenotype is the observable result of the trait.
Capital letter indicates that the allele is dominant and for recessive allele, small letter is used. Thus, B indicates dominant allele of that trait and b indicates recessive allele for that trait.
Depending on the genotype, the individual can be homozygous dominant, homozygous recessive or heterozygous for a trait.
In this case, BB is for denoting homozygous dominant, Bb is for heterozygous dominant and bb is for homozygous recessive.
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How can knowledge of cell structure and function help in the fight against infectious
diseases?
Answer:
if you know how a cell functions then you know where it can potentinally be injured or killed.
How does an atom become a positive ion?
A- It loses an electron,
B- It gains an electron,
C- It gains a neutron,
D- It loses a neutron
Answer:
A- It loses an electron,
Explanation:
When one or more electrons is knocked off of an atom, it becomes positively charged. It is now an positive ion.
Hope this helps :)
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Which type of large-scale environmental impacts are the most detrimental? Is all human impact on the environment negative? How can we prevent the occurrence of large-scale, negative environmental impacts?”
Answer:d all of the above
Explanation:
all you need is in the photo
ASAP
Answer:
B
Explanation:
Please help what's the answer
Answer:
A. replication forks
Explanation:
A replication ___fork___ is the area that results after the double helix separates during replication.
UNA CADENA ALIMENTARIA ES LA RELACON ENTRE LOS MIEMBROS DE UN ECOSISTEMA PARA QUE UNA PARTE DE LA ---------------SEA TRANSFERIDA ENTRE ELLOS
Answer:
UNA CADENA ALIMENTARIA ES LA RELACON ENTRE LOS MIEMBROS DE UN ECOSISTEMA PARA QUE UNA PARTE DE LA -ENERGIA- SEA TRANSFERIDA ENTRE ELLOS
ExplanatioN:
La cadena trófica es un procesos de tranferencia de energía entre distintos organismos de un ecosistema, en el cual cada organismo en un nivel se alimenta de organismos provenientes del nivel anterior y es comido por organismos del nivel siguiente. Los primeros eslabones de la cadena son autótrofos (fotoautotrofos o quimioautotrofos), productores que sintetizan la materia orgánica a partir de productos inorgánicos. Los eslabones siguientes son los consumidores heterótrofos: herbívoros, carnívoros, detritívoros.
Paso de energía entre niveles:
Del total de energía que llega a la superficie terrestre, solo el 1% es tomado por los fotoautótrofos. Esta energía adquirida que ingresa a la cadena trófica, tiene un recorrido unidereccional por donde pasa de nivel a nivel, desde los autótrofos hasta los heterótrofos, hasta que finalmente esa energia es disipada nuevamente en el ambiente.
Regla del 10%:
Esta regla establece que solo el 10% de energía utilizada por un nivel trófico pasa al siguiente nivel trófico. Solo el 10% de energía almacenada como biomasa en uno de los niveles tróficos, por unidad de tiempo, se convierte en energia almacenada del siguiente nivel trófico.
Esta progresiva reduccion de energía determina en número de niveles tróficos en esa cadena, que puede ser de cuatro o cinco eslabones.