Differentiate between pure and mixed culture

Answers

Answer 1

Answer:

A pure culture contains only one single type; a mixed culture contains two or more different bacteria.

Explanation:


Related Questions

Most of the work done in the field of resource technology occurs where?

Answers

Most of the work done in the field of resource technology occurs in :    

The computer system

What are technology resources ?

Technology resources are resources which are used for the production and dissemination of data. The work done based of these resource is first conceived and planned in the brain and mind of the creator, before the work is been done mostly using a computer system Technology resources include wireless data, video networks ,electronic storage devices and other forms of data extraction.

Hence we can conclude that Most of the work done in the field of resource technology occurs in : The computer system

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Why did Mendel study pea plants?

Answers

Answer:

He chose peas because they had been used for similar studies, are easy to grow and can be sown each year.

Explanation:

I just saw the answer on the website :)

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5 Which statement BEST describes the relationship between photosynthesis and cellular respiration?
A. Both processes use energy to form molecules of glucose.
B. The products of one process are the reactants in the other process.
C. The products of one process are the same products in the other process.
luminate EducationTM, Inc.

Answers

Answer:

B

Explanation:

the formula of photosynthesis is  6CO2 + 6H2O + light/energy → C6H12O6 + 6O2 and the equation for respiration is C6H12O6 + 6O2 → 6CO2 + 6H2O + light/energy

A forested area contains deer, wolves, blue jays, squirrels, and many plant species including the staple diet of the deer. Alfalfa. During
the construction of a mall nearby, humans have changed the flow of water in the area, drying up a stream that feeds the major patches of
Alfalfa. What will likely happen in this environment?
1. The deer population will shrink
II. The wolf population will shrink
III. The blue jay population will increase
IV. The squirrel population will migrate to a new location
A. I, II and IV
B. Just IV
C. I and III
D. I and II

Answers

Answer:

The Answer tothe questioN should be D

Explanation:

its is D because if the deer decrease that affects the wolves as well because its their food source. One affects the other

As per the given scenario, deer population will shrink as well as wolf population will shrink. The correct option is D.

What is competition?

Competition is most commonly determined by the interaction of individuals competing for a small quantity of a shared resource.

It can also be characterized more broadly as the indirect or direct interactions of organisms that results in a change in fitness when the organisms share the same resource.

When members of multiple species start competing for the same resource, this is known as interspecific competition.

Woodpeckers and squirrels frequently end up competing for nesting rights in the very same holes and spaces in trees, while African savanna lions and cheetahs compete for the same antelope and gazelle prey.

As in the given case, the water supply is being limited by the humans, it will most likely to cause the competition for the resource. It will lead to shrinkage of deer population along with wolf population.

Thus, the correct option is D.

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Help! Need to get this done fast

Answers

Answer:

C. 2 short , 2 long

Explanation:

Please mark brainliest .

2. How are the amino acids formed from the codon in Mutation #2 different from those formed from the original codon pattern?

Answers

Mutations are caused by the alteration in the nucleotide bases. These altered bases synthesize diverse amino acids relying upon nucleotide base sequences that code for a specific amino acid.

What is Mutation?

A mutation may be defined as sudden, stable, and inheritable transformations in the sequence of the genome of an organism.

Mutations can bring a different code for amino acid sequences that results in the synthesis of a particular type of protein.

Before mutation amino acids formed from the codon are specific to their nucleotide bases but mutation causes the alteration in the nucleotide bases which alters the sequence of amino acid and proteins as well.

Therefore, it is well described above.

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Why do individuals who are anemic generally not exhibit an increase in respiratory rate or tidal volume, even though their blood is not carrying enough oxygen?

Answers

The amount of oxygen that dissolves in the blood in the lungs' alveoli is unaffected by

Which of the following describes what might happen with a sudden increase in precipitation in the grassland biome?

Rise in drought-tolerant plants
Salt and sediment deposition
Decline in severe storms
Nutrient loss and soil erosion

Answers

Answer

Nutrient loss and soil erosion

Explanation:

Which organisms ) contain this membrane bound organelle ?​

Answers

Answer:

eukaryotic organisms contain this membrane bound organelles.

Which of the following statements are TRUE about plasmids?
I. Plasmids are extra-chromosomal DNA molecules.
II. Plasmids are self-replicating extrachromosomal DNA molecules.
III. Plasmids are associated with antibiotic resistance genes.

Answers

Answer:

ll. (2nd Option)

Explanation:

Plasmids are self-replicating extrachromosomal DNA molecules found in Gram-negative and Gram-positive bacteria as well as in some yeast and other fungi. Although most of them are covalently closed circular double-stranded DNA molecules, recently linear plasmids have been isolated from different bacteria.

Thanks!

Determine whether the description applies to landfills, incinerators, or both.

emits toxins
through combustion
drains liquids
into the ground
generates ash
requires a substantial
amount of land
releases greenhouse
gases
can generate energy

Answers

Emission of toxin and generation of ash is related only with incinerators. Draining of liquid and requirement of substantial amount of land is related with landfills only. Generation of energy and release of greenhouse gases is related with both landfills as well as incinerators.

What are incinerators?

An incinerator is a waste-burning furnace. Pollution control equipment, such as flue gas cleaning, is included in modern incinerators.

Incinerator plant designs include moving grate, fixed grate, rotary kiln, and fluidized bed.

The descriptions can be as follows:

Generation of energy - Both, landfills produce methane gas, which is used to generate electricity, and incinerators produce heat energy, which is also used to generate energy.Emission of toxins through combustion - Incinerators emit dioxins, a hazardous chemical.Draining of liquids into the ground - this is a common problem at all landfill sites.Emission of greenhouse gases - Both landfills and incinerators emit methane and other carbon gases.Necessitates a significant amount of land - landfill site, necessitates a large amount of land to dump city wasteProduction of ash - Incinerator only.

Thus, these can be the description applies to landfills, incinerators, or both.

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Based on the image, which of the following best describes the electronegativity of the carriers and the synthesis and utilization of ATP during the electron-transfer process? Electron carrier I is the least electronegative, and electron carrier IV is the most electronegative. ATP is required for electron transfer between carriers. Electron carrier I is the most electronegative, and electron carrier IV is the least electronegative. ATP is not required for electron transfer between carriers. Electron carrier I is the most electronegative, and electron carrier IV is the least electronegative. ATP is utilized in a distinct reaction, not directly coupled with electron transfer. Electron carrier I is the least electronegative, and electron carrier IV is the most electronegative. ATP is synthesized in a distinct reaction, not directly coupled with electron transfer.

Answers

Based on the image, statement 4. Electron carrier I is the least electronegative, and electron carrier IV is the most electronegative, ATP is synthesized in a distinct reaction, not directly coupled with electron transfer best describes the electronegativity of the carriers and the synthesis and utilization of ATP during the electron-transfer process.

What is the relationship between electron transfer,  carriers, and synthesis of ATP during electron-transfer?

The electron transfer is a process coupled to the generation of ATP by using enzyme carriers during the process of oxidative phosphorylation, which is the third stem of the process of cellular respiration that generates ATP to be used as the source of energy.

Therefore, with this data, we can see that electron transfer carriers help to the synthesis by coupling the electronegativity of certain molecules during the electron-transfer process of oxidative phosphorylation in cellular respiration.

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why norovirus is a good pathogen?

Answers

answer: Noroviruses, unlike the Ebola virus, are extremely hardy, able to travel through the air and stay for days on surfaces where they can infect new people. "Noroviruses are perhaps the perfect human pathogen," one CDC scientist declared in a scientific review.

which one among the elements is a trace ?

Answers

Answer:

iron, copper, zinc, cobalt, molybdenum, selenium, chromium, iodine

Explanation:

An element is a trace element when its below 100 mg.

define plasma osmolality​

Answers

Plasma osmolality measures the body's electrolyte–water balance

Water bends light. This type of bending is called refraction. The drawing tool shows a penny submerged in water, but only part of the path of the light ray is shown. How could the light ray bend as it enters and leaves the water so that you can see the penny at position B? Draw the missing parts of the light ray so the penny is visible at position B.​

Answers

Water makes the penny visible by bending the light rays towards the normal.

What is refraction of light?

Refraction is the bending of light rays as it crosses the boundary of media of different densities.

The ability of water to to bend light is employed in making a penny visible when water is added to container container a penny which was not visible initially.

Therefore, water makes the penny visible by bending the light rays towards the normal.

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what the difference between saturated and unsaturated​

Answers

Saturated fats tend to come from animals, while unsaturated fats come from plants. Saturated fats also don’t have double bonds between carbon atoms, while unsaturated fats normally have at least one. Also, unsaturated fat is healthier than saturated fat.

Answer:

Saturated fast are solid at room temperature, unsaturated fats are a liquid at room temperature.

Explanation:

Saturated fast are solid at room temperature and unsaturated fats are a liquid at room temperature. The reason is because in saturated fats there are no double bond between carbon atoms, this gives them their solid structure .

Unsaturated fats have one or more double bonds between carbon atoms, this gives them their liquid form.

Which of the following would most likely increase a person's risk of invasion by pathogenic microbes? select all that apply
Increased action of cilia
Loss of epidermal tissue
Decreased urine flow
Decreased interstitial fluid osmotic pressure
Increased intestinal motility

Answers

The following would most likely increase a person's risk of invasion by pathogenic microbes are the Loss of epidermal tissue.

What is pathogenic invasion?

The invasion of a number with the aid of using a pathogen can be aided with the aid of using the manufacturing of bacterial extracellular materials which act in opposition to the host with the aid of using breaking down number one or secondary defenses of the frame. Medical microbiologists talk to those materials as invasins.

Active cells, referred to as fibroblasts produce collagenous fibers and floor substances. Blood vessels quickly develop into the epidermis, restoring circulation. If the damage may be very minor, the epithelial cells sooner or later repair the dermis as soon as the epidermis has been regenerated.

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nments
le
es
borations
ry
Teams (Web)
nload
Down Browser
ent Success
cer
What type of aneurysm is pictured in the image provided?
Saccular
Fusiform
Aortic
O Dissecting

Answers

Answer:

what's this yaar I don't know this answer

According to the results, what is the pH of the
water? Check all that are correct.
Above 7
Basic
About 7
Neutral
Acidic
Below 7

Answers

Answer:

about 7 which is neutral

True or False.

There is an increase in the concentration of albumin-bound fatty acids in the blood during a fasting state.

Answers

I believe it is true

What best summarizes the differences between ancient and modern horses?

Answers

An ancient horse was used for labor and was made for carrying heavy loads of water horses are now built with more muscle in their legs

Look at least two molecules diagrams and think about the features of compounds.

Answers

Answer:

---> are isomers of each other

---> have same molecular formula

---> are both hydrocarbons

---> have same number of each kind of atom

Explanation:

Isomers with the same molecular formula.  The molecular formula gives a list of the type and quantity of each element in a molecule.

In other words, they are two different molecules with the same type and amount of atoms. The difference is that their structures are different. That being said, the structural formula of the molecules would not be the same. Hydrocarbons are molecules that only consist of carbon (C) and hydrogen (H) atoms.

What is located in your upper arm

Answers

Answer:

the humerus

Explanation:

One unit of alcohol contains 8 grams of alcohol. calculate the risk of developing liver cancer for someone who consumes 4 units of alcohol a day

Answers

The risk of developing liver cancer for someone who consumes 4 units of alcohol a day is twice as high as normal (hepatocellular carcinoma and intrahepatic cholangiocarcinoma).

What does alcohol do to the liver?

Alters the production of enzymes, changing the rate of metabolism of the alcohol consumed, causing chronic inflammation, alcoholic hepatitis and cirrhosis.  Irritates the mucous membranes of the stomach and esophagus, causing esophagitis, gastritis and diarrhea.

With this information, we can conclude that The risk of developing liver cancer for someone who consumes 4 units of alcohol a day is twice as high as normal (hepatocellular carcinoma and intrahepatic cholangiocarcinoma).

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What is the BEST definition of deciduous?

becoming inactive during the winter or other unfavorable times

shedding leaves on a yearly cycle

moving to an area that is warmer

taking moisture directly from the air

Answers

Answer:

shedding leaves on a yearly cycle

Answer:

shedding leaves on a yearly cycle

What are the fnctions of ovule and sepal.

If u write good answer i will keep u in mark as brainlist.

Answers

Answer:

Ovule is the organ responsible for the formation and containment of reproductive cells and it consist of majorly three parts which are integuments (the outer part), the nucellus and the gametophyte

Sepal acts majorly as a defender providing protection to the reproductive cells also acting as a petal in plants without petals.

During which stage of interphase do cells copy their chromosomes?

Answers

Answer:

The S phase (Synthesis phase)

DNA replication takes place during the S-phase of interphase, creating two identical sets of DNA. The DNA coils and condenses into units known as chromosomes during the start of mitosis. The two identical sister chromatids that make up each chromosome are joined by a centromere.

How does DNA replication work?

The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication.

A double helix of two complementary strands makes up DNA. These strands are split apart in the replication process. The method of semi-conservative replication uses each strand of the original DNA molecule as a template to create its counterpart.

Several enzymes that carry out this process are given below, along with their activities.

____________

DNA Dependent DNA POLYMERASE is a class of enzymes that is responsible for all organisms' DNA replication processes. It accelerates DNA replication in the 5′ to 3′ range.The enzyme known as TOPOISOMERASE is involved in the over- or under-winding of DNA.HELICASE—Using the energy from ATP hydrolysis, which is characterized by the breakdown of hydrogen bonds between annealed nucleotide bases, helicases are frequently employed to separate the strands of a DNA double helix or a self-annealed RNA molecule.DNA GYRASE, a particular kind of topoisomerase, relieves strain caused by DNA helicase's unwinding action.DNA LIGASE- Joins the OKAZAKI FRAGMENT of the lagging strand and re-anneals the semi-conservative strands.PRIMASE - Primase catalyzes the production of a short primer, which is a ssDNA template-specific piece of RNA (or DNA in other species).

REPLICATION FORK -(Attachment #1)

_________________

REPLICATION PROCESS -

INITIATION - The beginning of DNA replication takes place at certain locations in the DNA molecule known as ori-sites or regions. Enzymes often recognize these locations and initiate the process. As opposed to C-G base pairs, which produce three hydrogen bonds, A-T base pairs only form two hydrogen bonds, making them easier to strand split. As a result, these sites are typically "AT-rich" (rich in adenine and thymine bases). Following the discovery of the origin, enzymes create a pre-replication complex that unzips the double-stranded DNA. The enzyme topoisomerase is involved in this process.Elongation - The 5'-3' activity of the DNA polymerase enzyme. Now, a new strand was created by DNA polymerase enzymes in the direction of 5′ to 3′ (note: the DNA template is read in 3' to 5' direction). RNA primers were simultaneously created by the primase enzyme and utilized by the polymerase to create new strands of RNA.

As DNA polymerase enzyme has 5′ - 3′ direction so two types of strand are form -

LEADING STRAND - A DNA polymerase with high processivity that has the direction 5′ - 3′ (template strand 3′-5′) extends the continuous strand from the primer in the same direction as the replication fork that is expanding. One RNA primer is applied to the leading strand.

LAGGING STRAND - It is the discontinuous strand whose synthesis is going in the opposite direction of the replication fork that is developing. Each primer extends the lagging strand intermittently to create Okazaki fragments. A low processivity DNA polymerase that is different from the replicative polymerase enters to fill the gaps after RNase eliminates the priming RNA pieces. Multiple primers are applied to the lagging strand, and then the Okazaki fragments are joined by the ligase enzyme, filling in the gaps.

TERMINATION - Replication forks meet and end at several locations throughout the chromosome because eukaryotes start DNA replication at various locations; it is unknown how these are controlled. Termination necessitates the halting or blocking of the DNA replication fork's forward motion. When termination occurs at a particular locus, it includes the interaction of two elements: (1) a DNA sequence known as a termination site sequence, and (2) a protein that binds to this region to actually cease DNA replication.

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The rapid acceleration of globalization has also increased the amount of international migration. Sanderson’s results from a cross-national study indicated that:
Group of answer choices

international migration increases overall levels of human development

international migration increases a country’s Gross Domestic Product (GDP)

international migration decreases overall levels of human development

international migration decreases a country’s Gross Domestic Product (GDP)

Answers

Sanderson's cross-national study indicated that international migration increases overall levels of human development. Thus, the correct option is A.

What is Migration?

Migration may be defined as the movement of people from one place to another in search of resources better than their native one.

International migration increases the overall standards of human development because it initiates new opportunities and trade aspects of people of one country to another.

It also leads to improved human development outcomes in major areas like education, health, and finance.

Therefore, the correct option for this question is A.

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Which kind of mutation is most likely to lead to a new trait in an organism?

A. A frameshift mutation

B. A nonsense mutation

C. A missense mutation

D. A silent mutation

Answers

A frameshift mutation is a kind of mutation which is most likely to lead to a new trait in an organism. Thus, the correct option is A.

What is Mutation?

A Mutation may be defined as the sudden, stable, and inheritable alterations in the genomic sequence of an organism.

A frameshift mutation occurs when the reading frame modifies the grouping of the bases and thereafter transforms the amino acids that are encoded. Here, the encoded protein is non-functional.

A missense mutation arises when there is a blunder in the DNA code and one of the DNA base pairs is altered.

A nonsense mutation occurs when a single change in the base sequence outcomes in the exhibition of a stop codon, thereby concluding protein synthesis prematurely.

Therefore, it is well described above.

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1. A driver who operates a private passenger vehicle will most likely receive which license classification?A. BB. CC. MD. D Calculate the volume in milliliters of 2.80 M potassium hydroxide that contains 14.5 g of solute which of the following items are initially recorded as an expense on the income statement? which are not oxidative reaction?(look at the image) If k(x) = 5x-6, which expression is equivalent to (k+ k)(4)? Mike mixes paint at a hardware store. A certain shade of orange paint is made bymixing white, red, and yellow paint in a ratio of 4 to 3 to 2. If Mike wants to make 3gallons of paint that is this shade of orange, how many gallons of red paint will heneed? In early April, an investor buys 1 XYZ Oct 60 call for $9 and sells 1 XYZ Jul 70 call for $4. If the investor buys back the Jul call for $1 and sells the Oct call for $12, what will the pretax profit or loss be? i can use some help please State the value of 'x' in this equation, and explain why you know this to be true without doing any calculations. 5X=59 Anita knows that she is one of the best basketball players on her team. Several colleges have been interested in recruiting her. One has offered her the opportunity to work with a specialist in biometrics once she joins the team. Anita does not think that this is really necessary since she is already a very skilled athlete. What is the BEST advice to give Anita? A. If everyone else on the team is doing it, she probably should too.B. Even the most skilled athletes can benefit from attention to biometrics.C. Using biometrics will help with her overall fitness but probably not her game.D. She probably already has all of the necessary skills since colleges are scouting her. Identify the emergent properties of the human respiratory system A Complication or TwoWhich statement best explains the author's purpose?a)He wants to tell his children how much he loves them and uses a great deal of imagery to do so.b)He wants to share something he has learned about life and concludes the narrative with a life lesson.c)He wants to share something funny about his wife and includes many details about her.d)He wants to explain his career choice and provides many facts to support his decision. West Co. recorded the following inventory information during the month of February:UnitsUnit costTotal costUnits on handBalance on 2/1800$2$1,600800Purchased on 2/81,00033,0001,800Sold on 2/141,500300Purchased on 2/172,00012,0002,300Sold on 2/231,600700Purchased on 2/2880043,2001,500West uses the FIFO method to cost inventory. What amount should West report as cost of goods sold at the end of February under each of the following methods of recording inventory?PerpetualPeriodicA.$3,900$3,900B.$3,900$5,900C.$5,900$3,900D.$5,900$5,900 What term describes a plant's response to external stimuli like light, gravity, and touch? Kaylee's refrigerator suddenly breaks down. It's old and would be expensive to repair, so she decides to buy a new one. Kaylee chooses a refrigerator with a 12-month, no-interest financing offer. The sales agreement lists the sale price, the amounts and dates of payments, the APR that will apply if Kaylee doesn't pay off the refrigerator in 12 months, and a lot of other information. The law that requires sellers to provide this information to purchasers is What are m and b in the linear equation y=2x+8 Specialised Plant cells are used to absorb water from the soil.Explain how the structure of these specialised cells are adapted for its function.(I need this to be slightly unprofessional,so please do not copy off a website,I also need this quick) Other than abstinence, what contraceptive method is most effective against hiv if used properly?. Part B: What evidence from the song supports the answer to Part A? Group of answer choices "You want a revolution? (New York!)/I want a revelation/(In New York!)" "Excuse me, miss, I know it's not funny/But your perfume smells like your daddy's got money/Why you slummin' in the city in your fancy heels..." "And when I meet Thomas Jefferson/Unh!/I'm 'a compel him to include women in the sequel!" "Look around, look around at how/Lucky we are to be alive right now!" in which situation is a country most likely to choose a fixed exchange rate for its currency