Which of the following is an essential amino acid?

Answers

Answer 1

Answer:

The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.


Related Questions

What best describes enzymes?

Answers

Enzymes are converted into products by the reactions they catalyze. One enzyme can catalyze many different reactions. ... They are molecules made of amino acids that speed up chemical reactions by lowering the activation energy.

Choose THREE examples that correctly predict the effect of a change on the ecosystem.
А
A decrease in the kangaroo rat population will cause a decrease in the coyote
population
B
A decrease in the desert tortoise population will cause a decrease in the
rattlesnake population
Wc
A decrease in the rattlesnake population will cause an increase in the kangaroo

Answers

Answer:

The answer is option A "A decrease in the kangaroo rat population will cause a decrease in the coyote population"

Explanation:

Climate is a significant ecological impact on environments. Changing Climate influences biological systems in an variety of ways. For example, warming may constrain species to relocate to higher scopes or higher rises where temperatures are more helpful for their endurance.

Environmental change not just influences biological systems and species straightforwardly, it likewise communicates with other human stressors, for example, advancement. Although a few stressors cause just minor effects when acting alone, their combined effect may prompt emotional natural changes. For example, environmental change may worsen the pressure that land improvement puts on delicate water front zones. Also, as of late logged forested zones may get defenseless against disintegration if environmental change prompts increments in substantial down pour storms.

how do organelles interact in the production and use of hemoglobin found in theses cells

Answers

Answer:

B

Explanation:

Answer:B

Explanation:

dy÷dx=(x-1)(x+3) at x=2​

Answers

Answer:

[tex]\dfrac{dy}{dx}=\dfrac{4}{25}[/tex]

Explanation:

The given expression is :

[tex]y=\dfrac{(x-1)}{(x+3)}[/tex]

We need to find dy/dx at x = 2

[tex]\dfrac{dy}{dx}=\dfrac{d}{dx}(\dfrac{x-1}{x+3})\\\\=\dfrac{(x+3)\dfrac{d}{dx}(x-1)-(x-1)\dfrac{d}{dx}(x+3)}{(x+3)^2}\\\\=\dfrac{x+3-(x-1)}{(x+3)^2}\\\\=\dfrac{x+3-x+1}{(x+3)^2}\\\\\dfrac{dy}{dx}=\dfrac{4}{(x+3)^2}[/tex]

Put x = 2 in above expression

[tex]\dfrac{dy}{dx}|x=2=\dfrac{4}{(2+3)^2}\\\\=\dfrac{4}{25}[/tex]

Hence, the value at dy/dx is [tex]\dfrac{4}{25}[/tex]

Which image shows both potential and kinetic energy?
NEED HELP ASAP

Answers

the second image shows it

Where are many critical biodiversity hotspots located?

Answers

Answer:

Tropical forests are typically biodiversity hotspots and are usually filled with endemic species. The Upper Amazonia/Guyana Shield, the Congo Basin, and the New Guinea/Melanesian Islands have the highest number of endemic terrestrial (land-living) species on Earth

Explanation:

hope this helped:)

why is energy flow through an ecosystem dependent upon continual energy transformations?​

Answers

Answer:

Organisms must gather energy to survive.

Explanation:

Answer:

food

Explanation:

State the function of red blood cells.

Answers

Answer:

Red blood cells carry oxygen from our lungs to the rest of our bodies. Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.

Explanation:

They transport oxygen

Explanation:

1)It carry oxygen from our lungs to the rest of our bodies.

2)It attracts bacteria

Which layer affects the oceanic and continental plates here on Earth?

Answers

Answer:

lithosphere

Explanation:

What kind of features would you expect to find in a transitional
fossil between Ichthyostega and Eusthenopteron?

Answers

Answer:

hope that help you

Explanation:

Fossils or organisms that show the intermediate states between an ancestral form and that of its descendants are referred to as transitional forms. There are numerous examples of transitional forms in the fossil record, providing an abundance of evidence for change over time.

What are the Complementary DNA base pairs: GGGCCATATAG. What are the Complementary DNA base pairs: ATTGGCCTAGC

Answers

Answer:

CCCGGTATATC

TAACCGGATCG

Explanation:

G and C are complimentary; T and A are complimentary

Just swap each letter following that rule :)

If you are building a dichotomous key and you have 10 species to identify, how many couplets should your key have?
A) 04
B) 05
C) O9
D) 10

Answers

Answer:

10

Explanation:

easch couplet presents the user with 2 alternatives and exclusive sets of character's.

10 couplets should your key have. If you are building a dichotomous key, and you have 10 species to identify. Hence, option D is correct.

What is dichotomous key?

A dichotomous key, a crucial piece of scientific gear, is used to discriminate between diverse species according to their visible traits. Users must choose one of two possibilities to answer a series of questions that make up dichotomous keys.

A dichotomous key in the identification of trees, for instance, would ask whether the tree has leaves or needles. The key then leads the user down one set of questions if the tree has leaves; if the tree has needles, a different set of questions is shown.

The three most prevalent types of dichotomous keys are nested, connected, and branched. Each sentence has the appropriate response written next to it in nested type.

Thus, option D is correct.

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plz help for brainlyist​

Answers

Answer:

1,3

2, organs

3, i do not know

4, i do not know

food is important for growing amd repairing in the body. ny which process is food broken down into nutrient molecules​

Answers

Answer:

Digestion proper, which is the mechanical and chemical breakdown of food into particles/molecules small enough to pass into the blood. Absorption is the passage of food monomers into the blood stream. Assimilation is the passage of the food molecules into body cells.

Please help!! And thank you!!

Answers

Well, understand it :-

The temperature rises as you get higher in the stratosphere and in the thermosphere.Temperatures decrease as you gain height in the troposphere and the mesosphere.

What created the solar system? *
The Big Bang
A dust cloud
O O O O
O Nebula
A shooting star

Answers

Answer: dust cloud

Explanation:

dust condensed after asteroid collisions at the kepler belt  

in chemical reactions, bonds blank in reactants.

Answers

in chemical reactions, bonds break in reactants

What are the properties of water that you can observe when transpiration takes place?

Answers

Answer:

When water evaporates through the leaves, a pull is created through the xylem, and water moves back to the leaves. This is known as the transpiration pull.

Which of the following is NOT a property of water?
O A) It is a good solvent.
OB) It is denser when frozen than when liquid.
OC) It resists temperature changes.
OD) it is cohesive.
O El It can be found as a solid. liquid. or gas.

Answers

Answer:

It is denser when frozen than when liquid.

Explanation:

Ice is actually less dense than water. The lattice arrangement of ice allows water molecules to be more spread out than in a liquid, making ice less dense than water.

Hope that helps.

Which of the following is a molecule?
A. Argon
B. Water
C. Nitrogen
D. Uranium

Answers

Answer:

Argon- a chemical element

Water- polar molecule

Nitrogen- chemical compound

Uranium- chemical element

Hope this helps! :)

Please give brainliest

:)

Explanation:

In conclusion B. water is a molecule

The smallest unit of life is a ,and all organisms have at least one.

Answers

Answer: A cell

Explanation:

Answer:

Cell

Explanation:

It just is. :/

identify the type of mutation shown in the diagram, with respect to chromosome 20

Answers

I think is Insertion since that other part of the chromosome( the gray) was added to the current chromosome( the yellow).

What are the Complementary DNA base pairs: ATTGGCCTAGC *

Answers

Answer:

taaccggatcg

Explanation:

PLEASEEE HELPPPPP!!!!!!!
which aquatic ecosystem is the most commercially exploited for seafood and minerals.

Answers

Answer:

The coral reefs of the Caribbean are thought to be under threat

Explanation:

Overfishing threatens over 60 percent of Caribbean coral reefs. Declines in coral cover and increases in algal cover have been observed across the region. This analysis identified about one-third of Caribbean reefs at high threat from overfishing pressure and about 30 percent at medium threat.

Which level of organization is shown in the image? Cell. Tissue. Organ. Organ system. "Cobblestones" is not an option.

Answers

This is adipose tissue.-----tissue level

Monomers linked together to form a polymer could be described as beads in a multicolored necklace. Which statement about monomers is true with respect to the above analogy?

A. Monomers in a polymer could be linked in various ways.
B. Monomers in a polymer are of different types.
C. Monomers in a polymer look different but are structurally similar.

Answers

The answer is B

Monomers linked together to form a polymer could be described as beads in a multicolored necklace because monomer in a polymer are of different types.

Bacterial disease is caused by the multiplication of bacteria in a patient. How do pathogenic bacteria harm a patient?

Answers

Answer:

Host Susceptibility

Resistance to bacterial infections is enhanced by phagocytic cells and an intact immune system. Initial resistance is due to nonspecific mechanisms. Specific immunity develops over time. Susceptibility to some infections is higher in the very young and the very old and in immunosuppressed patients.

Bacterial Infectivity

Bacterial infectivity results from a disturbance in the balance between bacterial virulence and host resistance. The “objective” of bacteria is to multiply rather than to cause disease; it is in the best interest of the bacteria not to kill the host.

Host Resistance

Numerous physical and chemical attributes of the host protect against bacterial infection. These defenses include the antibacterial factors in secretions covering mucosal surfaces and rapid rate of replacement of skin and mucosal epithelial cells. Once the surface of the body is penetrated, bacteria encounter an environment virtually devoid of free iron needed for growth, which requires many of them to scavenge for this essential element. Bacteria invading tissues encounter phagocytic cells that recognize them as foreign, and through a complex signaling mechanism involving interleukins, eicosanoids, and complement, mediate an inflammatory response in which many lymphoid cells participate.

Genetic and Molecular Basis for Virulence

Bacterial virulence factors may be encoded on chromosomal, plasmid, transposon, or temperate bacteriophage DNA; virulence factor genes on transposons or temperate bacteriophage DNA may integrate into the bacterial chromosome.

Host-mediated Pathogenesis

In certain infections (e.g., tuberculosis), tissue damage results from the toxic mediators released by lymphoid cells rather than from bacterial toxins.

Intracellular Growth

Some bacteria (e.g., Rickettsia species) can grow only within eukaryotic cells, whereas others (e.g., Salmonella species) invade cells but do not require them for growth. Most pathogenic bacteria multiply in tissue fluids and not in host cells.

Virulence Factors

Virulence factors help bacteria to (1) invade the host, (2) cause disease, and (3) evade host defenses. The following are types of virulence factors:

Adherence Factors: Many pathogenic bacteria colonize mucosal sites by using pili (fimbriae) to adhere to cells.

Invasion Factors: Surface components that allow the bacterium to invade host cells can be encoded on plasmids, but more often are on the chromosome.

Capsules: Many bacteria are surrounded by capsules that protect them from opsonization and phagocytosis.

Endotoxins: The lipopolysaccharide endotoxins on Gram-negative bacteria cause fever, changes in blood pressure, inflammation, lethal shock, and many other toxic events.

Exotoxins: Exotoxins include several types of protein toxins and enzymes produced and/or secreted from pathogenic bacteria. Major categories include cytotoxins, neurotoxins, and enterotoxins.

Siderophores: Siderophores are iron-binding factors that allow some bacteria to compete with the host for iron, which is bound to hemoglobin, transferrin, and lactoferrin.

Explanation:

What would happen to a cell if its cytoplasm contains 97% water and 3% solute and it is placed into a container that has a solution of 92% water and 8% solute?

Answers

The cell would probably get smaller

A cell if its cytoplasm contains 97% water and 3% solute and it is placed into a container that has a solution of 92% water and 8% solute - cell will lose water and shrink.

A hypertonic solution, the solution has a lower water concentration than the cell cytosol, and water moves out of the cell until both solutions are isotonic

if you place a cell in a hypertonic solution, the cell shrinksit loses water as due to osmosis water moves from a higher concentration inside the cell to a lower concentration outsideThe water will move out of the cell to try to equalize.

Thus, A cell if its cytoplasm contains 97% water and 3% solute and it is placed into a container that has a solution of 92% water and 8% solute - cell will lose water and shrink.

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In hummingbirds feather color is incompletely dominant. A rather large population of hummingbirds has 396 red-sided individuals (RR), 257 brown sided individuals (Re) and 557 tan-sided individuals orr). Calculate the following:_______.
a. What is the allele frequency of the Rallele (o)?
b. What is the allele frequency of the rallele (a)?
Migration season comes and 200 of the red-sided individuals leave the nosulation before mating occurs.
c. After migration season what is the new allele frequency of the Rallele (0)?
d. After migration season, what is the new allele frequency of the rallelelo?
e. Which mechanism of evolution (natural selection, genetic drift, or gene flow) caused the allele frequencies to change?

Answers

Answer:

a) Frequency of the R allele: [(396 x 2) + 257] / (396 x 2) + (257 x 2) + (557  x 2) = 1049 / 2420 = 0.433

b) Frequency of the r allele: [(557 x 2) + 257] / (396 x 2) + (257 x 2) + (557  x 2) = 1371 / 2420 = 0.567

c) Frequency of the R allele: [(196 x 2) + 257] / (196 x 2) + (257 x 2) + (557  x 2) = 649 / 2020 = 0.321

d) Frequency of the r allele: [(557 x 2) + 257] / (196 x 2) + (257 x 2) + (557  x 2) = 1371 / 2020 = 0.679

e) migration is gene flow  

Explanation:

Gene flow (also referred to as gene migration) is the movement of genes that acts to change allele frequencies in local populations by transferring genetic material from one population to another. Gene flow may be caused either by the movement of organisms that reproduce in new populations (migration), or by the movement of gametes (for example, pollen dispersal in plants).

Discuss the roles of the enzymes secreted by the pancreas during digestion.

Answers

During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.
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Write the equation of the line that is parallel to y = -6x + 10 and crosses the y-axis at -4. What do you think the following things areAtmosphere:Geosphere:Biosphere:Hydrosphere:Cryosphere: 5. The scale on the map of a park is 5 in.: 3 mi. The distance from the entrance of the park to the playground is 9 miles. How many inches long is the distance on the map? Under the Articles of Confederation, which principle of government is reflected in the fact that the states kept all powers and rights that were not expressly given to the United States? A.Limited government B.states rights C.popular sovereignty D.epresentative government I need help with this question pls The difference of 2 numbers is 7. The sum of those numbers is 23. What are the 2 numbers? 1.to make information known publicly; to attractively display merchandiseexercise2.to describe the qualities ofdehumanize3.to decompose by electric currentmesmerize4.to exert the muscleselectrolyze5.to regard with blind admiration or devotioncharacterize6.to stimulate or shock with an electric current; to spur; startleadvertise7.to treat as less than humangalvanize8.to hypnotize; to enthrallidolize What dividend is represented by the synthetic division below? How many 1/5s are there in 8/10?Please answer right away helpers!!!The time is ticking by now. II. Mr. Roy sold a cupboard to Mohan for RO 60 and earned a profit of RO 10. Mohan spent RO 27 to polish and repair the cupboard. He then sold it to Gopi at a profit of RO 8. After using the cupboard for a year , Gopi sold it to a furniture dealer for RO 90. Did Gopi make a profit or a loss in the deal? * Write the power of 10 to multiply the divisor by to make it a whole number. Then, write the equivalent problem and find the quotient.16.65 divided by 0.37 i need halp wit this and also i brainly keeps deleting meh questions Which equation describes a line perpendicular to line R that passes through the point (3, 6)? A.x 3y = 21B.3x + y = 3C.3x y = 15D.3x y = 3 Management anticipates fixed costs of $74,200 and variable costs equal to 35% of sales. What will pretax income equal if sales are $342,000? A. $119,700. B. $148,100. C. $267,800. D. $45,500. E. $183,750. The management of Ro Corporation is investigating automating a process. Old equipment, with a current salvage value of $21,000, would be replaced by a new machine. The new machine would be purchased for $420,000 and would have a 6 year useful life and no salvage value. By automating the process, the company would save $145,000 per year in cash operating costs. The simple rate of return on the investment is closest to (Ignore income taxes.): (Round your answer to 1 decimal place.) What developments did Bismarck anticipate in the relationship between Austria and Germany?Helpppp plzzzz I use the word "unprecedented," because at no previous time has American security been as seriouslythreatened from without as it is today.What does the information presented in the text reveal about the author's purpose?AHe hopes to motivate government officials through fear.BHe wants to impress the danger upon the American people.He seeks to create a sense of extreme urgency in his audience.DHe attempts to build trust in his audience through candidness. What marked the official transition from Roman Republic to Roman Empire?1) When Gaius Marius began his rule as Consul2) When Augustus, formally known as Octavian became Emperor of Rome3) When Sulla marched on Rome and declared himself dictator4) When Tiberius beliefs threatened the Senate and gained support of Rome's underclass Consider the sets below.U=x| x is a real number}A= x| x is an odd integer)R=x|x=3, 7, 11, 27}Is RCA?O yes, because all the elements of set A are in set RO yes, because all the elements of set R are in setAO no, because each element in set A is not represented in set RO no, because each element in set R is not represented in set A 1000 divided by 4 equal to what What process lead to biological nitrogen fixation?