Answer:
Constitutive is natural skin color and facultative is the darkening due to UV or other factors.
Explanation:
Constitutive skin color is the natural color of the skin, and that color has nothing to do with any controllable/external factor and is determined in your genes, while Facultative is the result of ultraviolet light or other environmental factors which causes a change in melanin in the skin therefor making it darker
Which layer(s) do all blood vessels have in common?
Describe the structure and function of capillaries.
What role does smooth muscle play in blood vessels, and where is it located?
Which type of blood vessel is the thickest?
Which type of blood vessel has the greatest amount of blood pressure?
What allows arteries to increase in size as they become filled with blood?
What role do valves play in blood flow?
Name and briefly describe the three main layers of blood vessels
What tissues are likely to be found in arteries?
What tissues are likely to be found in veins?
What mechanisms ensure that blood continuously flows throughout our body?
Blood vessels have three layers that provides strength to the blood vessel when the blood is moving with high pressure.
Which layer(s) do all blood vessels have in common?All blood vessels are all made of three layers i.e. The adventitia or outer layer, the tunica media or a middle layer and an inner layer, or tunica intima.
Capillaries are tiny blood vessels that have thin walls. The capillaries also take waste products such as carbondioxide away from your tissues and loaded the blood with oxygen.
Arteries are the largest blood vessels with the thickest walls which means they are the thickest.
Large arteries receive the highest pressure of blood flow so that's why they are more thick and elastic to accommodate the high pressures.
The valves play greater role in blood flow because valves prevent the backward flow of blood. They are present in heart chambers.
Connective tissues are likely to be found in both arteries and veins in order to ensure their important function.
Pumping of heart is a mechanism that ensure that blood continuously flows throughout our body. As the heart beats, it pumps blood through blood vessels which is called the circulatory system.
So we can conclude that blood vessels have three layers that provides strength to the blood vessel when the blood is moving with high pressure.
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A medically important genus that contains short rods that are facultatively anaerobic, catalase positive, and motile by peritrichous flagella arrangement is the genus _________.
A medically important genus that contains short rods that are facultatively anaerobic, catalase-positive, and motile is the genus Bacillus.
What is Bacillus?Bacillus is a genus of bacteria that are rod-like shaped and are well known to be gram-positive.
These Bacillus bacteria are aerobic (oxygen presence) or also can be anaerobic (fermentative facultative).
In conclusion, a medically important genus that contains short rods that are facultatively anaerobic, catalase-positive, and motile is the genus Bacillus.
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Which of the following is the function of
an enzyme?
A. builds muscle and bone
B. speeds up chemical reactions
C. creates stem cells
D. builds proteins
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B.) speeds up chemical reactions
#KeepOnLearningAnswer:
D
just answer it ok
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A new forensics lab will be opening soon, and the proper elements for polymerase chain reaction (PCR) analysis must be purchased. In addition to the DNA samples from the crime scenes, what other molecular items would be required
Other molecular items would be required Ions, magnesium, dNTP, primers, and buffer.
What other molecular items would be required?Polymerase chain reaction (PCR) is a technique for obtaining a large number of copies of a particular DNA fragment from a small amount of sample. It is sufficient to start from a single copy of that original fragment, or mould. This technique is based on the natural property of DNA polymerases to replicate strands of DNA, using alternating high and low-temperature cycles to separate the newly formed strands of DNA from each other after each replication phase, and then allow the strands of DNA to rejoin so that they can be duplicated again. Today, the entire PCR process is automated by means of a device called a thermal cycler, which allows the reaction tubes to be heated and cooled in order to control the temperature required for each stage of the reaction.
The common PCR is performed with cycles that have three temperature steps:
DNA denaturation double strandHybridization of the primers to the specific zone 3'of each of the strandsExtension of the primer by action of DNA polymeraseThe components necessary to carry out a PCR are:
Divalent Ions: necessary for polymerase function, magnesium ions are generally used and are in the form of magnesium chloride salt MgCl2 . The final concentration of Mg++ should be between 1.5-2.0 mM and is optimal for most PCR products.
dNTP: deoxyribonucleotides triphosphate, used by the polymerase to extend the chain.
Primers: are two short nucleotide sequences that are complementary to the DNA fragment mold. They are generally constituted between 20-40 nucleotides on average and with a GC content of 40-60%.
Buffer: Solution necessary for the reactions to take place, it is in charge of keeping the pH stable.
Taq polymerase: Enzyme in charge of DNA synthesis by adding dNTP. It supports high temperatures however has no corrective activity.
All these components are mixed in one solution.
Thus, Ions, magnesium, dNTP, primers, and buffer.
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1.The expansion of the Mexican wolf population in Arizona raises the possibility of the formation of a hybrid zone with coyotes along the boundaries of their range. Which statement, if true, would most likely result in the formation of a stable hybrid zone?
A.
Coyote-wolf hybrids are less fit in the hybrid zone than either parental species.
B.
Coyote-wolf hybrids are more fit in the hybrid zone than either parental species.
C.
Coyote-wolf hybrids are less fit outside the hybrid zone than either parental species.
D.
Coyote-wolf hybrids are more fit outside the hybrid zone than either parental species.
2.How would a drought in Arizona most likely affect the population density of the Mexican wolf population?
A.
The population density would decrease because insufficient abiotic factors are available to support the population.
B.
The population density would decrease because insufficient biotic factors are available to support the population.
C.
The population density would increase because sufficient abiotic factors are available to support the population.
D.
The population density would increase because sufficient biotic factors are available to support the population.
The most likely result in the formation of a stable hybrid zone is that Coyote-wolf hybrids are more fit in the hybrid zone than either parental species.
What is evolutionary adaptation?Evolutionary adaptation refers to the adaptive features of a population in a given environment.
Moreover, the statement 'the population density would decrease because insufficient abiotic factors are available to support the population' is correct about a drought in a given environment.
In conclusion, the most likely result in the formation of a stable hybrid zone is that Coyote-wolf hybrids are more fit in the hybrid zone than either parental species.
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In aqueous solutions, the charged ________ of phospholipids are attracted to the water phase, and the nonpolar ________ are repelled. This property causes lipids to naturally assume single and double layers.
In aqueous solutions, the charged hydrophilic heads of phospholipids are attracted to the water phase, and the nonpolar hydrophobic tails are repelled.
What do you mean by Phospholipids?Phospholipids may be defined as ad amphipathic molecule that consists of fatty acids, a phosphate group, and an alcohol attached to the phosphate.
The hydrophilic heads of the phospholipids are water-loving which consists of the phosphate group while the hydrophobic tails of the phospholipids are water-hating that comprises of fatty acids.
Therefore, in aqueous solutions, the charged hydrophilic heads of phospholipids are attracted to the water phase, and the nonpolar hydrophobic tails are repelled.
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The Lorax tried talking the Once-ler out of chopping down the Truffula trees, until some event occurred. What happened that convinced the Once-ler he was right
His business failing was the reason why he was convinced that he was right to chop down the tree.
What is Chop?This is defined as the process in which a substance such as a tree is cut down through the use of tools.
Once-ler business failed and he felt chopping down the Truffula trees will result in him having money through the sales of the resources.
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A genetic counselor is someone who
Explanation:
A genetic counselor is someone who works with individual, families, communities and other health care professionals to empower them ....
This part of a prokaryotic cell is a slime layer that helps cell stick things
Food proteins are used most efficiently when we Multiple Choice consume a very-low-kilocalorie diet. consume enough carbohydrates and fats to meet our kilocalorie needs. consume a low-carbohydrate diet. consume them with alcohol.
Food proteins are used most efficiently when we : ( B ) consume enough carbohydrates and fats to meet our kilocalorie needs
Our Kilocalorie needsOur kilocalorie needs vary between male and females. An average male needs about 2700 kcal per day while a woman needs about 2200 kcal per day to function properly. In order to meet this kilocalorie needs we have to consume the essential nutrients such as carbohydrates and fats and proteins.
Hence we can conclude that Food proteins are used most efficiently when we consume enough carbohydrates and fats to meet our kilocalorie needs
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which fact supports the opinion that paper bags and less harmful than plastic bags
The paper bags are less harmful than plastic bags because paper bags are made from the tree which is from nature.
What is plastic?Plastic is a unnatural substance. It is bio degradable. The plastic is make stronger by the use of radiation.
The paper bags are made by hands. It contains no processing. While the plastic bags are modified in machines. They involves the use of harmful radiation.
Thus, the paper bags are less harmful than plastic bags.
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Explain the characteristics scientists use when observing organisms and placing them in the six kingdoms
There were several characteristics that the scientists kept in mind while classifying, these are mobility, cell structure, cell type, body type, etc.
What is classification?Classification is the grouping of organisms based on similar characteristics which makes them different from other groups.
There are the following characteristics to classify them:
Mobility: it includes whether the organism is moving or sessile.Cell type: it includes eukaryotic or prokaryotic cells.Cell structure: it includes whether the cells have a cell wall or not.Body type: it includes whether the organism is unicellular or multicellular.Mode of nutrition: It includes whether the organism is parasitic, autotrophic, symbiotic, consumer, etc.Thus, these are the characteristics that the scientists kept in mind before drawing classification.
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PLEASE I WILL MARK BRAINLIST
Answer:
B.
Explanation:
it belived to be one of the earliest chemical
pesticide.
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select the correct answer from the drop-down menu.
zoe is writing a memoir about the first time she tried beets. choose the best way to complete the draft to show a description of the setting.
my dad used to say there aren't really foods he doesn't like, just foods he hasn't liked yet. i'm inclined to agree with him because there's a clear line of demarcation in my life: days of beet disdain and beet delight.
it was an ordinary day . the lunch crowd buzzed as i surveyed the menu, until i landed on a list of appetizing ingredients: bibb lettuce, asparagus, goat cheese, pistachios, and . . . yellow beets with a lemon dill vinaigrette. dressing on the side and hold the beets. that was my first inclination.
According to the context of the text, it can be inferred that the correct option is "When I gathered the courage to try beets for the first time" because it coincides with the information in the text.
What is the text about?The text is about the author's father's reflection on the taste for some foods. In that specific case, the author cites that reflection to refer to the first time he ate beets.
To refer to that moment, the author refers to his father's phrase and later develops that idea by relating it to the day he ate beets. In general, he gives a brief description of what the food looks like and his reaction to the ingredients in his dish.
Note: This question is incomplete because there is some information missing. Here is the complete information:
OPTIONS
And I remember the moment as clearly now as the day it happened.When I gathered the courage to try beets for the first time.At Atwoods Care when I sat at a table for two near the door.When my dad's words truly sunk in for the first time.Learn more about texts in: https://brainly.com/question/18228844
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Answer:
"at Atwoods Cafe when I sat at a table for two near the door"
Explanation:
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Answer:
1. d 2.c 3.A 4. B
Explanation:
Im right mate
what change do you observe in three seed if you use boiled and cooled water of tap water in breaker
1.4.2 Test (CST): Computer-Scored Unit Test
Question 5 of 25
Technology can have good and bad effects. What is a bad effect of spraying
Spraying of pesticides leads to disease in human as well as in other microorganisms.
What is a bad effect of spraying?Spraying of pesticides greatly affected the animals and aquatic life. Some pesticides wash away with rain and add to the water bodies which is responsible for killing of aquatic animals. This spraying also kills some useful microorganisms that are present in soil.
So we can conclude that spraying of pesticides leads to disease in human as well as in other microorganisms.
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what is the scientific name of mango
Pls help me ASAP
Question 7 of 28
What is one effect of gravity within the solar system?
A. A planet moves at the same speed throughout its orbit because
the force of gravity is constant.
B. A planet experiences increasing gravity throughout its orbit, so it
continuously speeds up.
OC. A planet moves more quickly as it gets closer to the sun because
it experiences more gravity.
OD. A planet moves more slowly as it gets closer to the sun because it
experiences more gravity.
The one effect of gravity within the solar system is planet experiences increasing gravity throughout its orbit, so it continuously speeds up, which means letter B.
How is gravity explained?The force of gravity between two objects is the product of their masses divided by the square of the distance between them. That is, the more mass an object has and the closer it is, the greater its force of attraction on another object.
The concept of gravity is something known naturally, however the gravity that occurs in the solar system and the planets leaves them in orbit and in addition to that with each passing year these planets have an even faster speed.
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what is the cause of the start of dental decay
Answer:
Cavities are caused by tooth decay — a process that occurs over time. Here's how tooth decay develops:
Plaque forms. Dental plaque is a clear sticky film that coats your teeth. It's due to eating a lot of sugars and starches and not cleaning your teeth well. When sugars and starches aren't cleaned off your teeth, bacteria quickly begin feeding on them and form plaque. Plaque that stays on your teeth can harden under or above your gum line into tartar (calculus). Tartar makes plaque more difficult to remove and creates a shield for bacteria.
Plaque attacks. The acids in plaque remove minerals in your tooth's hard, outer enamel. This erosion causes tiny openings or holes in the enamel — the first stage of cavities. Once areas of enamel are worn away, the bacteria and acid can reach the next layer of your teeth, called dentin. This layer is softer than enamel and less resistant to acid. Dentin has tiny tubes that directly communicate with the nerve of the tooth causing sensitivity.
Destruction continues. As tooth decay develops, the bacteria and acid continue their march through your teeth, moving next to the inner tooth material (pulp) that contains nerves and blood vessels. The pulp becomes swollen and irritated from the bacteria. Because there is no place for the swelling to expand inside of a tooth, the nerve becomes pressed, causing pain. Discomfort can even extend outside of the tooth root to the bone.
Explanation:
I hope it helps
How do you think the process of human pregnancy is similar to that of other mammals?
Answer: they give milk to their young and they tend to hold the young in their stomach for longer times than other animals and give birth to live babies
Explanation
What of the following will occur after fire burns down 100 acres of a forest?
A. Adaptive Radiation
B. The forest cannot recover without human intervention
C. Primary Succession
D. Secondary Succession
Deer are herbivores, which means
they eat plants. Which term also
means herbivore?
A. primary consumer
B. carnivore
C. producer
D. heterotroph
right 2003-2022 International Academy of Science. All Rights Reserved.
A. Primary consumer
Explanation:
Primary consumers make up the second trophic level. They are also called herbivores. They eat primary producers—plants or algae—and nothing else. For example, a grasshopper living in the Everglades is a primary consumer.
Having major trouble with this matching section, and I keep getting it wrong over and over again. Nearly at my wit's end and I really need help
Answer:
number 4 is puncture
five is amputation
six is laceration I think
number 2 is incision
that's all I know
Describe the components used in the process of cellular respiration.
Answer:
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Explanation:
What is climate change a global worldwide problem explain in terms of Earth atmosphere’s
Which organ is
primarily
responsible for
ingesting food?
A. mouth
B. heart
C. anus
D. pancreas
Answer:
a. mouth
Explanation: this shouldn't be difficult
Answer:
mouth bec we eat through mouth .
18. identify the three conditions under which ionic reactions can run to completion, and write an equation for each.
Formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.
What are the three conditions under which ionic reactions completed?The three conditions under which ionic reactions can run to completion i.e. formation of a gas, formation of a precipitate and formation of a slightly ionized product.
K+(aq) + Br−(aq) + Ag+(aq) + C2H3O2−(aq) → K+(aq) + C2H3O2−(aq) + AgBr(s)
Mg2+(aq) + SO42−(aq) + Ba2+(aq) + 2NO3−(aq) → Mg2+(aq) + 2NO3−(aq) + BaSO4(s)
So we can conclude that formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.
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Use the following table to answer the question:
codons found in messenger rna
second base
first base u c a g third base
u phe
phe
leu
leu ser
ser
ser
ser tyr
tyr
stop
stop cys
cys
stop
trp u
c
a
g
c leu
leu
leu
leu pro
pro
pro
pro his
his
gln
gln arg
arg
arg
arg u
c
a
g
a ile
ile
ile
met thr
thr
thr
thr asn
asn
lys
lys ser
ser
arg
arg u
c
a
g
g val
val
val
val ala
ala
ala
ala asp
asp
glu
glu gly
gly
gly
gly u
c
a
g
this table shows the codons found in messenger rna. using this information, what sequence of nucleotides in the template strand of dna could code for the polypeptide sequence val-asp-ser?
guu-gau-agc
caa-cta-tcg
gtt-gat-agc
caa-cua-ucg
Nucleotides from the DNA template strand complement the mRNA's codons. These codons code for amino acids. Option B is correct. CAA - CTA - TCG
What are nucleotids?Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.
Several nucleotides joint by their extremes compose the nucleic acids.
Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information neccesary to carry out cellular functions.
What are codons?Codons are short sequences of three nucleotides that carry genetic information needed to build the protein. These units determine which amino acids are added to the growing chain during the assembly.
More than one codon might code for the same amino acid.
Different sequences of three nucleotides -codons- might code for a different amino acid. This means that the resulting proteins will not be the same, and they will accomplish different functions.
What are the template and coding strand?When DNA molecule unwinds to be transcripted, two single strands get separated,
The coding strandIt receives that name because it is the sequence that codes for each amino acid composing the proteins.
When referring to the coding strand, we are talking about the sequence that turns out to be the same as the mRNA that results from the transcription of the same DNI segment -switching bases T for U-.
The template strand -complementary strand-
This is the one that is used during transcription to synthesize mRNA. The template strand is the one that is going to be complemented by the mRNA.
To get to know the sequence of nucleotides in the template strand that code for the polypeptide sequence val-asp-ser, firts we need to know which codons code for these amino acids.
1)
Amino acid Codon
Val GUU, GUC, GUA, GUG
Asp GAU, GAC
Ser UCU, UCC, UCA, UCG, AGU, AGC
These are all the possible codons in mRNA that might code for these amino acids. Now, we need to identify their complementary bases on the template strand.
2)
mRNA Template strand
GUU CAA
GUC CAG
GUA CAT
GUG CAC
GAU CTA
GAC CTG
UCU AGA
UCC AGG
UCA AGT
UCG AGC
AGU TCA
AGC TCG
The column of the right shows all the possible nucleotides that might complement the mRNA codons. There are several combinations. Now, we need to choose among the options the correct combination.
3)
Options A and D ⇒ guu-gau-agc and caa-cua-ucg
These are not the correct options since they carry uracils instead of thymines. Remember that DNA molecules have thymine, and RNA molecules have uracil.
Option C ⇒ gtt-gat-agc
This is not correct since these sequences do not complement the mRNA codons.
Option B ⇒ caa-cta-tcg
This is correct. You can find these nucleotide sequences among the options written before for the template strand.
Option B) CAA - CTA - TCG is the correct one.
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Answer: CAA - CTA - TCG is the correct one.
Explanation:
In simple terms, what is fracking?
Answer: Fracking is drilling into earth and directing a mixture of water, sand and chemicals at a rock layer to release gas inside.
Answer:
Fracking is revolutionizing oil and gas drilling across the country.
Explanation:
I hope it helps! Have a great day!
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