A biologist has mixed the polysaccharide agarose with other components to create a gel.

Which choice best describes the next step in gel electrophoresis?

A.The mixture is poured into a special tray and allowed to cool and solidify.
B.An electric current is run through the gel.
C.The gel is placed in a box with positive and negative electrodes.
D.DNA samples are loaded into wells.

Answers

Answer 1

Answer:

a

Explanation:

n.a


Related Questions

13. What happens when a protein is deNtured?

Answers

Denaturation involves the breaking of many of the weak linkages, or bonds (e.g., hydrogen bonds), within a protein molecule that are responsible for the highly ordered structure of the protein in its natural (native) state. Denatured proteins have a looser, more random structure; most are insoluble.


Gut bacteria found in the human stomach (very low pH) would be classified into which kingdom?
plantae
archaebacteria
fungi
protista
animalia
eubacteria

Answers

The 3rd one - fungi, double check

How is a plant cell built?

Answers

Answer:

Plant cells are eukaryotic cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae. Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the absence of flagella or centrioles, except in the gametes, and a unique method of cell division involving the formation of a cell plate or phragmoplast that separates the new daughter cells.

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Weather is——

A- short-term and affects a local region

B- long-term and affects a local region

Answer ASAP and please be correct

Answers

A- short term and affects a local region

if destructive interference occurs between a wave with a six foot trough and a three foot crest, what factors will determine the height of the resulting wave?

Answers

Destructive interference formed when the two meeting waves are out of phase and in some cases, the two wavers maxima are 180 degrees out of phase. The height of waves is determined by the wind speed, how  the long wind blows, and crucially the fetch.

The longer the duration of wave, the larger will be  the wave heights. The longer the fetch, the large will be wave heights.

What is interference?

Some waves jump to cross over or meet with each other. When they do, the reaction between the waves is called interference.

If at a given location, both interfering waves are supersede in the same direction (both up or both down) then it is known as constructive interference.

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in human digestion system trachea and oesophagus both connect to the
a large intestine
b stomach
c pharynx
d rectum

Answers

Explanation:

In human digestion system trachea and oesophagus both connect to the :-

b) Stomach

Answer:

b) stomach

Explanation:

In the human digestion system, the trachea and esophagus both connect to the stomach.

Which of the following describes how the protozoan Stentor overcomes cell size limitations?
Select one:
a. They have a central vacuole filled with water.
b. They have a string of nuclei.
c. They are supported by a myelin sheath.

Answers

The statement 'They have a string of nuclei' describes how the protozoan Stentor overcomes cell size limitations (Option b).

What are protozoans?

The protozoans (kingdom Protista) are unicellular single-celled organisms that generally live in aquatic environments.

The protozoan Stentor is a type of filter-feeding organism, which is heterotrophic and contain cilia.

In conclusion, the statement 'They have a string of nuclei' describes how the protozoan Stentor overcomes cell size limitations (Option b).

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Which process do scientists think provided Earth with an oxygen-rich atmosphere?


photosynthesis


respiration


radiometric dating


spontaneous generation

Answers

Answer:

Photosynthesis

Explanation:

Tiny organisms known as cyanobacteria, or blue-green algae conducted photosynthesis using sunshine, water and carbon dioxide to produce carbohydrates and oxygen.

Marshall made the following table to compare the functions of physical structures in plants and animals:


Function Animal Structure Plant Structure
Provides support for the organism Skeleton
Exoskeleton Stem
Reproductive organs Testes
Ovaries Stamen
Pistil
X Skin
Fur
Feathers Waxy Covering
Bark


Which of the following should replace X?
Protect the internal organs of the organism
Protect the organism from harsh conditions
Transports water throughout the organism
Involved in reproduction of the organism

Answers

Answer:

The answer is Pistil

:}

Explanation:

Which are correct examples of physical (P), chemical (C), and biological (B) barriers? P: complement system; C: saliva; B: coughing P: coughing; C: saliva; B: complement system P: coughing; C: sneezing; B: complement system P: complement system; C: saliva; B: sneezing

Answers

The correct examples of physical (P), chemical (C), and biological (B) barriers is P: coughing; C: saliva; B: complement system.

What are barriers?

Barriers are the immune defence mechanisms used by the body to prevent the invasion of microorganisms from causing harm.

Examples of immune barriers include:

Physical barrier: Example is coughing

Chemical barrier: Example is saliva

Biological barrier: complement system.

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molecules can have each of these forms of energy except

Answers

Light energy hope that helps :)

Molecules can have each of these forms of energy except light energy. The correct option is A.

What are molecules?

A molecule is the smallest unit of a substance that keeps its content and properties. It is made up of two or more atoms that are joined together by chemical bonds.

Chemistry is built on molecules. The element symbol and a subscript indicating the number of atoms are used to identify molecules.

Single, neutral particles make up an atom. As neutral objects consisting of two or more atoms joined together, molecules are. A positively or negatively charged particle is called an ion.

There are three different kinds of molecules: atom-sized molecules, element-sized molecules, and compound-sized molecules.

Except for light energy, molecules can possess all of these types of energy.

Thus, the correct option is A.

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Your question seems incomplete, the probable complete question is:

Molecules can have each of these forms of energy, except:

A. light energy

B. Chemical energy

C. Sound energy

D. Kinetic Energy

Hyperopia, myopia and presbyopia are refractive errors that result when the: a. pressure within the anterior chamber of the eye is elevated. b. eye is unable to focus light effectively. c. tympanic membrane ruptures. d. lens of the eye becomes cloudy.Hyperopia, myopia and presbyopia are refractive errors that result when the: a. pressure within the anterior chamber of the eye is elevated. b. eye is unable to focus light effectively. c. tympanic membrane ruptures. d. lens of the eye becomes cloudy.

Answers

hey!

It occurs when the eye is unable to focus light effectively

In hyperopia, the near image is not seen clearly , it is long sightedness
In myopia , the distant images aren’t seen clearly.

A(n) _________ is a device that converts substances like
hydrogen and oxygen to electricity.
A) compact fluorescent
B) energy efficient
C) hybrid vehicle
D) consumer
E) fuel cell
F) mandated

Answers

Answer:

Explanation:

Answer

A fuel cell works on the principal of converting hydrogen and oxygen to electricity. It works on the principle of breaking down the hydrogen into a proton and an electron.  When electrons have passed through a passage (having created electricity) they are united with elements in the atmosphere producing heat and electricity and water.

Using an analogy of a water balloon, describe the function of the bladder. (I'm terrible at biology lol)

Answers

a water balloon holds fluid like a bladder
it expands to a certain point like a bladder
if it starts to fill too much it pops

A genius IQ is considered anything over 144. Let's pretend that
this is a genetic condition and that it is recessive. Genius IQ
is found in approximately 1 in 625 people worldwide (this is a
true statistic). Calculate the following:
1. The frequency of the recessive allele (genius IQ).
2. The frequency of the dominant allele (normal).
3. The percentage of heterozygous individuals (carriers).

Answers

According to the question, The percentage of heterozygous individuals (carriers). Thus, option "C" is correct.

What is the Hardy-Weinberg equilibrium theory?

The Hardy-Weinberg equilibrium theory states that the allelic frequencies in a locus are represented as p and q. Assuming a diallelic gene,  

p is the frequency of the dominant allele,  

q is the frequency of the recessive allele.

The genotypic frequencies after one generation are  

p² (H0m0zyg0us dominant genotypic frequency),  

2pq (Heter0zyg0us genotypic frequency),  

q² (H0m0zyg0us recessive genotypic frequency)

Thus, option "C" is correct.

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Suppose that somite stem cells commit to their cell fates by three days post fertilization. Which result would be MOST likely in the chick embryos receiving somites transplanted in the reverse order

Answers

The organs arising from quail somites develop in the reverse order because transcriptional programs activated in the nucleus can't be reversed.

What is a Nucleus?

This is referred to as the part of the cell which is membrane bound and contains chromosomes.

The fate of the chick embryos receiving somites transplanted in the reverse order is mentioned above.

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Asthma is a condition that causes the airways to constrict, limiting the amount of air that can make it into the lungs. Asthma attacks are generally caused by allergens in the environment and
the overreaction of which body system?

A.Circulatory
B.Digestive
C.Integumentary
D. Immune

Answers

Answer:

immune.

the answer is D.

hope it helps you.

Compare and contrast the left and right hemispheres of the brain, briefly describing their primary functions.

Answers

The Split-brain theory describes the differences between left brain and right brain characteristics, functions, and understand the dominance brain.

What is split-brain theory?

The split-brain phenomenon is caused by the surgical severing of the corpus callosum, the main route of communication between the cerebral hemispheres. The classical view of this syndrome asserts that conscious unity is abolished

The left brain handles reading, writing, and calculations. Some call it the logical side of the brain whereas The right brain is more visual and deals in images more than words. It processes information in an intuitive and simultaneous manner.

The left hemisphere controls the muscles on the right side of the body while the right hemisphere controls those on the left.

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What is thought to have caused the extinction at the end of the Cretaceous period

Answers

Answer:

To answer your question the most common belief of the mass extinction of the Cretaceous period was due to an asteroid impact.

Explanation:

How many baby formula plants are in the united states?.

Answers

There are four major baby formula companies in the United States of America and they are Abbott, Mead Johnson Nutrition, Nestlé USA and Perrigo.

What are Baby formula foods?

Baby formula foods are foods specially designed as substitutes or supplements to breastmilk for infants or babies.

Baby formula foods are designed to assist mothers who are not able to breastfeed their babies to provide their babies with the nutrients they need.

In the United States of America, there are four major baby formula companies; Abbott, Mead Johnson Nutrition, Nestlé USA and Perrigo.

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H
Animals store most of their excess energy reserves as _____
and this is explained because

Answers

Animals store the extra energy as the complex carbohydrate glycogen.

What is glycogen?

Glycogen is a polysaccharide of glucose. It serves as a form of energy storage in fungi as well as animals and is the main storage form of glucose in the human body.

The excess energy reserve as starch in case of plants and glycogen in case of animals.

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Organic material made by plants and animals is _______.
A) biomass
B) ethanol
C) geothermal
D) geyser
E) peat

Answers

The answer to this question is A) Biomass!

Answer: A) Biomass

Hope this helps

Which gland is responsible for your metabolism? why is this so important?.

Answers

Answer:

Thyroid gland

The thyroid gland is an endocrine gland in your neck. It makes two hormones that are secreted into the blood: thyroxine (T4) and triiodothyronine (T3). These hormones are necessary for all the cells in your body to work normally

•It plays a major role in the metabolism, growth and development of the human body.

•It helps to regulate many body functions by constantly releasing a steady amount of thyroid hormones into the bloodstream.

Its correct functioning depends on a good supply of iodine from the diet.

if glucose levels get too high in our body, what diseases may occur because of it?

Answers

Answer:

Hyperglycemia or high blood glucose

Explanation:

Hyperglycemia or high blood glucose occurs when there is too much sugar in the blood. This happens when your body has too little insulin (the hormone that transports glucose into the blood), or if your body can't use insulin properly. The condition is most often connected with diabetes.

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:)

What condition must be met for conduction to occur

Answers

The molecules of the substances must be touching.

The embryo becomes a fetus when a person is how many months pregnant?.

Answers

Answer:

Within 24 hours after fertilization, the egg that will become your baby rapidly divides into many cells. By the eighth week of pregnancy, the embryo develops into a fetus.

Sayaka sets up an experiment to see how heat affects the movement of an object. She cuts a paper plate into a spiral. She uses scissors to make a hole at the middle of the spiral and attaches some floss with a knot. She ties the other end of the floss loosely around the center of a stick so she can suspend the spiral in the air.

Sayaka asks her aunt to light a candle and move the candle underneath the spiral. The video shows what happens. Record your observations.

Answers

Answer:

the heat will to up in to the spiral witch then will go though the hole in the center

Hope This Helped

Answer:

the heat will to up in to the spiral witch then will go though the hole in the center

Explanation:

A (n) _______ is a jet of hot liquid or steam shooting out of earth’s crust.
A) biomass
B) ethanol
C) geothermal
D) geyser
E) peat

Answers

Answer:D) geyser

Hope this helps

State similarities and differences between the laboratory thermometer and the clinical thermometer

Answers

Answer:

Its simple

Explanation:

Answer: Similarities Both thermometers are used to measure temperature and both of them use mercury. Differences Clinical thermometer is used to measure human body temperature whereas laboratory thermometer is used to measure temperature of other object which has higher temperature than human body temperature.

how many chromosomes are in the daughter cells after meiosis is completed?

Answers

Answer:

23 chromosomes

Explanation:

Each daughter cell will have half of the original 46 chromosomes, or 23 chromosomes. Each chromosome consists of 2 sister chromatids. The daughter cells now move in to the third and final phase of meiosis: meiosis II.

Answer:23. Just take half of 46 away and there's your answer.

Explanation:

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