Which level of organization is characterized by a group of cells that work together to perform a common function?
organ
tissue
organ system
organism

Answers

Answer 1

Answer:

B

Explanation:

Answer 2

Answer:B

Explanation:


Related Questions

The sticky mass in some chemicals on heating was known as _______________________ fibre or fibre _________.

Answers

Answer:

Americans chemical society

Which of the following best describes the difference between a cation and an anion?

Answers

Answer:

An anion is a negatively charged ion that has gained more electrons than protons and added them to it's energy levels. A cation is a positively charged ion that has lost electrons from it's energy levels. It also has more protons than neutrons.

Explanation:

Can someone please help me!

Answers

Answer:

thats the 2 number point okay,plasma contains platelets ,ok

if the velocity of a vehicle starting from rest reaches 5m/2s in 2seconds, is the velocity of the vehicle uniform ?explain.​

Answers

Explanation:

Avg speed × total times = total distance

20×25=500

Since acceleration in the 1st interval is same as deceleration in the 3rd interval and deceleration is from the same velocity achieved after acceleration, t

1

=t

3

s

1

=

2

1

×5t

1

2

s

2

=(5t

1

)t

2

s

3

=(5t

1

)×t

3

2

1

×5×t

1

2

=(5t

1

)×t

1

2

1

×5×t

1

2

s

1

+s

2

+s

3

=5t

1

t

2

+5t

1

2

⇒5t

1

2

+5t

1

t

2

=500−−−−1

2t

1

+t

2

=25−−−−2

Solving (1 ) and (2) ⇒t

1

=5,t

2

=15sec

Which of the following can be inferred from the genetic code?

A.All organisms have a common biochemical evolutionary origin.

B.Organisms can live without genetic code.

C.Four nucleotides.

D.Four nucleosides.

Answers

Answer:

A. All organisms have a common biochemical evolutionary origin.

Explanation:

Genetic code is the biological mechanism by which the DNA in our body is used to synthesize protein needed for growth and development. The genetic code comprises of all the possible 64 codons i.e. a group of three nucleotides that encode an amino acid.

One of the characteristics of the genetic code is that it is UNIVERSAL. This means that all known living organisms make use of the same genetic code and hence, this portrays that all living organisms share a common biochemical evolutionary origin.

Which of the following is a heterotroph?
*cyanobacteria
*gopher
*fir tree
*dandelion

Answers

Correct Answer is gopher

In order for natural selection to occur, organisms must (select all that apply) Check All That Apply have variation that can be passed from one generation to the next. have variation that can be passed from one generation to the next. have differential reproductive success. have differential reproductive success. survive longer than another organism. survive longer than another organism. compete for resources. compete for resources. have adaptations to their environment. have adaptations to their environment.

Answers

Answer:

have variation that can be passed from one generation to the nextsurvive longer than another organismhave adaptations to their environment. have differential reproductive success.

Explanation:

Naturla selection is the survival and reproduction of individuals due to different phenotypes. The naturla selection represents a mechanism of evolution and changes in traits of species.

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

Natural Selection is a mechanism of evolution that occurs when there is a heritable variation for a trait and individuals with one version of the trait have greater reproductive success than do individuals with a different version of the trait.

In order for natural selection to occur, three conditions must be met:

There must be variation for the particular trait within a population.The variation must be inheritableIndividuals with one version of the trait must produce more offspring than those with a different version of the trait.

Thus,

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

Learn more:

https://brainly.com/question/15577096

write at least three difference between arteryand vein with diagram​

Answers

bonjour,

1. Arteries carry blood from the heart to the rest of the body, whereas veins carry blood from the rest of the body back to the heart.

2. Almost all arteries carry oxygenated blood and almost all veins carry deoxygenated blood.

3. Arteries have a thick elastic muscle layer, whereas the muscle layer for veins is much thinner.

Answer:

Difference Between Artery and Vein Artery 1. Vessels which carry blood from the heart to various body parts  2. Arteries carry oxygenated blood from the heart except pulmonary artery  3. Arteries have thick elastic muscular walls  4. Valves are absent  5. Blood flows under high pressure  Vein  1. Vessels which carry blood from the various body parts to the heart  2. Veins carry deoxygenated blood from the various body parts except pulmonary vein  3. Veins have thin non elastic walls  4. Valves are present to prevent the backward flow of blood  5. Blood flows under low pressure

How do the frequencies of the waves compare?

Wave A has a higher frequency because it has a larger amplitude.
Wave A has a lower frequency because it has a longer wavelength.
The waves have the same frequency because they have the same wavelength.
The waves have the same frequency because they have the same amplitude.

Answers

Answer:

The waves have the same frequency because they have the same amplitude.

the drug which is used to reduce pain is ..,....

i) opium ii) bhang iii) hashish iv) marijauna​

Answers

Answer:

hashish

Explanation:

opinum

Explanation:

because it is used to make pain nubbing/pain killer

Which is the difference between an antibiotic and an antiviral?

Answers

Answer:

There are no options in this question, the options are as follows:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

B. Antibiotics treat the symptoms, and antivirals destroy the causing organism.

C. Antibiotics are in liquid form, and antivirals are in mist form.

D. Antibiotics treat patients who have Staphylococcus, and antivirals treat patients who have the flu.

The answer is D

Explanation:

Specific drugs are used to curb infection or diseases caused by specific pathogens. An infection can be caused by either bacteria, virus or fungi. Considering their different mechanism of infection, viral infections are treated with the use of ANTIVIRAL DRUGS while bacterial infections are treated with the use of ANTIBIOTICS.

According to this question, staphylococcus is a bacterial genus and hence, patients with staphylococcus can be treated with antibiotics while flu is a viral disease, hence can only be treated with antivirals.

Answer:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

Explanation:

edg

define the term (1)semi-permeable membrane (2) osmosis tell the answer i will mark u as brainlist​

Answers

Answer:

a)the outermost part of an animal cell that selectively allows things to pass through and come out.

b) the passing of water molecules from higher conc. to lower conc.

Answer:

(a) Semi-permeable membrane:

A semipermeable membrane is a membrane that only allows the movement of solvent molecules but restricts the movement of solute particles across the membrane.

(b) Osmosis:

The process of movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane is called osmosis.

When two nearby concentrations are different, materials will tend to spread out to equalize the concentration. For example, if you put a drop of food colouring in some water it will gradually spread through the whole water.

Chemosynthesis _______. Question 11 options: uses energy derived from hydrocarbons and hydrogen sulfide in place of solar energy produces carbohydrates and sugars occurs around hydrothermal vents near the oceanic ridge system Both a and c are correct. All of the above are correct.

Answers

Answer:

The answer is all of the above are correct.

Explanation:

Chemosynthesis occurs in bacteria and other organisms and involves the use of energy released by inorganic chemical reactions to produce food. All chemosynthetic organisms use energy released by chemical reactions to make a sugar, but different species use different pathways. For example, at hydrothermal vents, bacteria oxidize hydrogen sulfide and add carbon dioxide and oxygen to produce sugar, sulfur, and water:  

CO2 + 4H2S + O2 ⇒ CH20 + 4S + 3H2O.

Chemosynthesis is the process by which food (glucose) is made by bacteria using chemicals as the energy source, rather than sunlight. Chemosynthesis occurs around hydrothermal vents and methane seeps in the deep sea where sunlight is absent. During chemosynthesis, bacteria living on the seafloor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in seawater). Pure sulfur and sulfur compounds are produced as by-products.

A cell membrane is very specific about what it allows to cross.how does this help the cell?

Answers

Answer:

The cell membrane is selectively permeable . It lets some substances pass through rapidly and some substances pass through more slowly, but prevents other substances passing through it at all. Some small molecules such as water, oxygen and carbon dioxide can pass directly through the phospholipids in the cell membrane

. Most of the matter in the universe: A. Exists within stars B. Is made when planets are formed C. Is unknown, called dark matter and energy D. Is blue-shifted

Answers

Answer:

B

Explanation:

is made when planet are formed

The ___ in an experiment is the factor that is being
changed, or tested.

- control group
- dependent variable
- independent variable
- constant

Answers

Answer:

Independent Variable

Explanation:

The independent variable is what we are changing or what is being tested.

The control/constant group is when you do not change anything and you want to see how the object acts under normal conditions.

The dependent group is what you are measuring. (aka your data/results)

Which of the following statements is MOST accurate?
a. Most people who engage in gambling activities become addicted to it
and end up taking bankruptcy because they cannot pay their bills.
b. People at lower income levels lower use a larger percentage of their
income to buy lottery and scratch tickets than people at higher levels of
income.
c. Gambling is a moral issue, with little or no economic or financial impact
on individuals or society.
d. Casinos only have a positive impact on communities because they create
jobs and generate wealth.

Answers

Answer:

C

Explanation:

Explain how homologous and the fossil records support evolution.
Thanks so much!!!

Answers

Answer:

Los fósiles, una prueba de la evolucion. El estudio de los fósiles nos da una idea muy directa de los cambios que sufrieron las especies al transformarse unas en otras; existen muchas series de fósiles de plantas y animales que nos permiten reconstruir cómo se fueron adaptando a las cambiantes

Explanation:

Answer:

homologous: have identical position, value, or structure

Fossils: In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms.

 

Explanation:

The evolution theory is supported by multiple sorts of evidence: homologous structures show common ancestry, whereas similar selective pressure will manufacture similar variations. analogous structures (beneficial features).

In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms. This supports Darwin's organic process theory, whereby straightforward life forms {progressively|increasingly|more and additional} evolved into more advanced. Proof of adolescence forms comes from fossils.

The statements on the left are incorrect
Write the correct statement.
Incorrect statements
1. Breathing produces carbon
dioxide from glucose
2. Only animals carry out
respiration. If someone can help with this it’d be greatly appreciated

Answers

Answer:

Carbon dioxide creates oxygen so we can breathe and seperates it from glucose

All species and humans breathe fish have gills to breathe underwater so not just animals have respiration.

Explanation:

Write down the functions of
1.microtubules
2.tripletsof microtubules

Answers

Answer:

Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility

Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.

Hope it helps :)

Answer:

Microtubules have several functions. For example, they provide the rigid, organized components of the cytoskeleton that give shape to many cells, and they are major components of cilia and flagella (cellular locomotory projections). They participate in the formation of the spindle during cell division (mitosis).

triplet microtubules are linked together to make the walls of the cylinder.

Explanation:

How do I make a Punnet Square without knowing if traits are Dominant or Recessive? I cannot refer to the parents of the current generation, so I have to rely on that generation to create a theoretical next generation.

Answers

If you are referring to a previous generation, that would probably mean that the traits they have are the dominant ones

Explanation:

if you know all the traits possible, then the ones the parents have of a previous generation are most likely the dominant ones, from there, you can hopefully figure out another generation. could you attach a picture if this didn't help? thanks

List three of water’s unique properties.

Answers

Explanation:

1.water is called universal solvent it can dissolve almost every solute on it

2.water can show anamolus expansion which mean it density will me most on 4 degree celsius

3.it is neutral substance

universal solvent, water cane expand, neutral substance

Explain the reciprocal relationship between human society and limiting factors

Answers

Answer:

humans try to modify environment factors to suit their needs. Limiting factors can be controlled in a specific area however, we can't control larger area. Like water or energy.

Complete the table by filling in the missing information. Use these choices:

frameshift
substitution


7. UGU-CCG-GAA-CGA

UGC-CGG-GAA-CGA

8. GAA-CGU-AGC-GGU

GAU-CGU-AGC-GGU

9. UGU-UUC-CCU-UAA

UGU-UCC-CUU-AA

Answers

Answer:

7. Substitution mutation

8. Substitution mutation

9. Frameshift mutation

Explanation:

A substitution mutation is any kind of mutation that involves replacement of one or more nucleotide base by another in a sequence.

A frameshift mutation, on the other hand, is a mutation that changes the reading frame of the sequence. Two types of mutations cause frameshift viz: insertion and deletion mutation.

In the following sequences, mutation has occured as follows:

7. UGU-CCG-GAA-CGA to UGC-CGG-GAA-CGA - Substitution mutation has occured because nucleotides C and G has replaced C and U in the first and second codons respectively.

8. GAA-CGU-AGC-GGU to GAU-CGU-AGC-GGU- A substitution mutation because nucleotide U has replaced A in the first codon.

9. UGU-UUC-CCU-UAA to UGU-UCC-CUU-AA - A frameshift mutation because nucleotide U has been removed from the second codon, hence, causing a change in the reading frame.

The diagram below shows a light ray striking Medium A and Medium B at the same angle. (4 points)

A rectangle labeled Medium A is drawn on the left. A ray of light travels through air and strikes the surface of medium A making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium A and makes an angle of about 15 degrees with the vertical. A rectangle labeled Medium B is drawn on the right. A ray of light travels through air and strikes the surface of medium B making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium B and makes an angle of about 25 degrees with the vertical.

Which statement is correct?
The speed of the light ray is the same in air and Medium A.

The speed of the light ray is the same in air and Medium B.

Medium A and Medium B have different densities because light refracts at different angles.

Medium A and Medium B have the same density because the light ray strikes both at the same angle.

Answers

Answer:

A the speed of the light ray is the same in air and medium

what is science?????​

Answers

Answer:

Science is the study of nature around us.

Answer:

As scientist discovered that Science is the method of learning everything about the natural world.

which describe the complex carbohydrate cellulose

Answers

Answer:

Cellulose is a polysaccharide consisting of a linear chain of several hundred to many thousands of linked glucose units. Cellulose is an important structural component of the cell walls of plants and many algae.

Explanation:

What would be considered a quantitative observation

Answers

Answer:

height of radish seedlings is measured.

Quantitative observation is a method of collecting objective data that is largely focused on numbers and values — the phrase means "related with, of, or portrayed in terms of a quantity." Sending out surveys, questionnaires, or polls is a common method of quantitative observation.

quantitative observation include age, weight, height, length, population, size, and other numerical values while, qualitative observation are color, smell, taste, touch or feeling, typology, and shapes.

OAmalOHopeO

Answer:

Gathering data in large quantities to help solve the situation.

Explanation:

imagine a boy name Marco was doing a science project about a certain specimen like a plant but he couldn't understand it he would need to us quantitive observation skills to understand an break down the problem.

PLEASE HELP Calculate the volume of the block using the formula

Answers

Answer:

21.553125

Explanation:

You can round to whatever you feel, but this is the answer when you multiply 2.75 x 2.75 x 2.85

:D

Why people get cholera in our community​

Answers

Answer:

Search Results

Featured snippet from the web

A person can get cholera by drinking water or eating food contaminated with cholera bacteria. In an epidemic, the source of the contamination is usually the feces of an infected person that contaminates water or food. The disease can spread rapidly in areas with inadequate treatment of sewage and drinking water.

Explanation:

The mode of transmission of Cholera is through fecal contamination of food or water. Transmission is therefore closely associated to poor environmental management due water and sanitation issues

Other Questions
I need two examples of rounding to the thousandths place. SHOW ALL WORK! Which of the following is a correct statement regarding the standard unmodified opinion audit report? Group of answer choices The auditor's responsibility paragraph includes a statement that the auditors are responsible for selecting the appropriate accounting principles. The format of the audit report for public and nonpublic entities are identical. The audit report includes the name of the lead partner on the audit. The auditor's responsibilities paragraph includes a statement that the auditor considers internal controls when designing the audit procedures performed. Polynomial: 3x^4 + 5x - 4; Divisor: x - 1 On her summer abroad in France, Jane bought a pair of shoes for 54.82 euros. The store owner only had francs to give her as change. She gave him 55 euros. How much did he give her back in francs please me in the math[tex]6 {x}^{6} + 6 {x}^{4} + 6 {x}^{2} and \: \\ 4 {x}^{6} - 4 {x}^{x} \\ it \: is \: lcm[/tex] Read these sentences from the excerpt:What he most dreaded, that I most desired. What he most loved, that I most hated. That which to him was a great evil, to be carefully shunned, was to me a great good, to be diligently sought; and the argument which he so warmly urged, against my learning to read, only served to inspire me with a desire and determination to learn.Which statement best explains why the author uses parallel structure to advance his purpose?a . to illustrate the need for the slaves and slave owners to come together to end slaveryb . to stress the author's belief that reading and writing are important skills for gaining freedom c . to show how the author disagrees with slave owners about the issue of slaveryd .to provide more details that support the claim that reading and writing are necessary for freedom Which angles are adjacent to each other? Angle KGD and Angle AEB Angle BEC and Angle AEB Angle AEB and Angle ECU Angle JCI and Angle KGD The horse says. ' My mother and an old horse ......seemed to know all about it.' What was it that they knew about? How did they know? Que es la salsa casino? (Por fis no lo pongan tan corto) Chemosynthesis _______. Question 11 options: uses energy derived from hydrocarbons and hydrogen sulfide in place of solar energy produces carbohydrates and sugars occurs around hydrothermal vents near the oceanic ridge system Both a and c are correct. All of the above are correct. Complete the following conversation at a caf according to the instructions in parentheses. Liquidity is _________. Question 10 options: equal to the market value of a firm's total assets minus its total liabilities generally most associated with intangible assets a measure of the use of debt in a firm's capital structure valuable to a firm even though liquid assets tend to be less profitable to own equal to current assets minus current liabilities Complete the table by filling in the missing information. Use these choices:frameshiftsubstitution7. UGU-CCG-GAA-CGAUGC-CGG-GAA-CGA8. GAA-CGU-AGC-GGUGAU-CGU-AGC-GGU9. UGU-UUC-CCU-UAAUGU-UCC-CUU-AA What are four factors that can cause mental disorders? What was a prominent cultural trait of Italian immigrants? A. Political and economic gain was the paramount goal of Italian culture. B. talian history and culture promoted a strong bond with strangers and the upper class members of society. C. The family was the purpose of existence and thc heart of the social/cultural system. D. Italian Catholics did not believe in the use saints as intermediaries to God. The exam will consist__ two sections.(fill the blank space) In cell K8, create a formula using the SUM function that calculates the total of the range D17:D20 and subtracts it from the value in cell J8. The length of a rectangle is increasing at a rate of 7 cm/s and its width is increasing at a rate of 6 cm/s. When the length is 12 cm and the width is 8 cm, how fast is the area of the rectangle increasing The soil samples for the next field indicate that fertilizer coverage needs to begreater. To achieve this, you need to increase flow rate. How would you achievethis?A. Increase speed to approximately 7.1 mph so that you cover the field morequicklyB. Increase the engine speed to approximately 2,000 rpmC. Decrease speed to approximately 6.0 mph so that you cover the field moreslowlyD. Shift to second gear so that the engine speed slows Complete the square to solve the equation below. Check all that apply.x^2-10x-4=10