You ran an experiment in lab that produced the following gel-electrophoresis results. The smallest band recorded was 2.03 kb and the largest band recorded was 17.15 kb.Which well contained a 17.15kb fragment but not a 2.03kb fragment?
A. 1
B. 2
C. 3
D. 4

Answer:

The first blood transfusion in which the donor blood type is A+ and recipient blood type is A- would not be successful as the donor blood is A+, which signifies that the blood comprises both Rh factor and antigen A, while the recipient blood group is A-, which signifies that the blood does not comprise Rh factor and possess only antigen A. Therefore, at the time of transfusion, the Rh factor of donor blood will be regarded as a foreign body by the recipient, and thus, will generate antibody against the donor Rh factor provoking immune rejection and agglutination.  

On the other hand, the second blood transfusion in which the donor blood type is O- and the recipient blood type is AB+, the blood transfusion would be successful as the blood group O- is a universal donor, as it neither possesses any A or B antigen nor Rh factor. This blood group is accepted by all the blood group recipients.  

Answer:

option 1, 2, 4, and 5 are true while 3 is false.

Explanation:

statements are given below.

1) Anaerobic respiration occurs by either lactic acid or alcohol fermentation.

2) Glycolysis is the first step in anaerobic respiration only.

3) only anaerobic respiration produces a net gain of ATP.

4) anaerobic respiration occurs in the cells cytoplasm.

5) aerobic respiration always include the citric acid cycle.

Anaerobic respiration occurs by either lactic acid or alcohol fermentation and produces very low amount of ATP due to the absence of oxygen. Glycolysis refers to the breakdown of glucose molecule in pyruvate and ATP molecules. It only occurs in anaerobic respiration because it does not requires oxygen. Both aerobic and anaerobic respiration produces energy in the form of ATP. Aerobic respiration occurs in the mitochondria of the cell while anaerobic respiration occurs in the cytoplasm. Citric acid cycle is main part of aerobic respiration.

Answer:

Explanation:

In the body, water moves through semi-permeable membranes of cells and from one compartment of the body to another by a process called osmosis. Osmosis is basically the diffusion of water from regions of higher concentration to regions of lower concentration, along an osmotic gradient across a semi-permeable membrane.

Answer: RNA polymerase attaches to the promoter

Explanation:Took the test

The first step that occurs in transcription is that RNA polymerase attaches to the promoter.

Hence, the correct answer is: RNA polymerase attaches to the promoter.

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Answer:

Explanation:

If plant roots are exposed to air, particularly non woody plants that rely on water pressure to stay erect, they start to wilt because of the disruption between the balance of transpiration (loss of water through the stomata) and absorption of water by the roots.

Since the plant's root has been exposed, they are no longer able to absorb water, and then transpiration also occurs which leads to a faster loss of water causing the plants cells to become dehydrated and collapse leading to wilting of the plants.

But if water is provided immediately, they can recover

Answer:

False

Explanation:

The troposphere is regarded as the lowest layer of the atmosphere which is visible and about 10km from the earth surface. The stratosphere however is the region above the troposphere and below the mesosphere.

The troposphere contain about 10 percent of the ozone layer while the stratosphere contain 90 percent. The stratosphere is made up of ozone layers which helps in the absorption of the ultraviolet rays from the sun and converting to heat. This is why depletion of the ozone layer gives rise to global warming.

Answer:

false

Explanation:

Well, the respiratory system is responsible for bringing oxygen into the body. Blood passes in capillaries in the lungs and picks up the oxygen. Blood carries oxygen to different parts of the body. Then the blood take carbon dioxide, a waste gas, back to the lungs. Then the lungs expel the carbon dioxide when you exhale.

Happy to help!

Answer:

Meiosis is the type of cell division in which a parent cell divides into four daughter cells. Meiosis generally occurs in the gamete or sex cells. The haploid cells are produced by the meiosis.

The original cell is diploid that contains the chromosome number (2X). The original is divided into the four daughter cell. The daughter cells produced by the meiosis contains the half chromosome number as compared with original cell (X). The crossing over occurs in meiosis and the daughter cells are quite different from the original cells.

Explanation:

Answer:

it is when a domminant allele mixes with a recesive allele creating a new pattern or genetic variation such as spot colors of a dog

The correct answer is B. Modern technology allowed for larger expanses of land to become cultivated, so farming took over many natural areas that were important for wildlife.

Explanation:

In the last decades, the creation of agricultural technology has increased the efficiency of growing crops. This means now, all the process is more efficient, which leads to more products to be sold and an increase in profit. However, the possibility of large scale agriculture has caused more land is used for this purpose. This often implies natural ecosystems such as forests are destroyed and the land of these ecosystems, which is usually rich in minerals, is used for extensive agriculture. This is a negative consequence of agricultural technology as natural areas important for wildlife are taken for human profit.

Answer:

B

Explanation:

Penn Foster

Genral Science

Page 14

Answer:

B. Heterotrophic

Explanation:

Heterotrphic animals depend on other orgamisms for food. They are made of carnaviors and omnavores. They eat other animals for food.

Answer:

simple sugar would not be obtained from carbohydrare

Explanation:

because amylase enzymes catalyse break down of carbohydrate typically starch

Answer:simple sugar would not be obtained from carbohydrare

Explanation:

because amylase enzymes catalyse break down of carbohydrate typically starch

Explanation:

Answer: the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct

Explanation:

Answer:

it is when a green plant or another plant use sunlight to synthesize food from water and carbon dioxide

:

Answer:

catalyze chemical reactions

Explanation:

An enzyme is a proteinous substance that acts as biological catalysts and increases the rate of biochemical reactions in the body. Enzymes are specific in nature which is as a result of the structure/shape of its building block (amino acid).

Enzymes speedens the rate of a chemical reaction in living systems, which would normally not occur or occur at a much slower rate, without the presence of an enzyme. Enzymes acts on the reactants called Substrates by binding to them to form products but they are not used up in the reaction. Hence, enzymes are not reactants.

Answer:

A. group of population

Explanation:

Communities are made up of all the populations of different species in a given area.

Answer:

1. DNA replication.

2. rRNA - is called the ribosomal RNA which serve as structural components of protein-making structures known as ribosomes.

mRNA - is called the messenger RNA which serve as temporary copies of the information found in DNA.

tRNA - is called transfer RNA, that ferry amino acids to the ribosome to be assembled.

3. Protein synthesis.

Explanation:

Hope it helps.

Answer: Please see the explanation column for answers

Explanation: Matching the following, we have

Auditory area------ Temporal lobe

Primary somatosensory cortex-----Parietal lobe

Primary (somatic) motor cortex.------Frontal lobe

Motor speech (Broca's) area-------Frontal lobe

Premotor cortex.------Frontal lobe

Visual area--------Occipital lobe

Gustatory (taste) area------Insula

Seat of intelligence, abstract------Frontal lobe

Answer:

Conservation allows the existence of trees essential for the reproduction of bald eagles.

Explanation:

As you may already know, environmental conservation is a term that represents the set of actions and activities that encourage the conscious and sustainable use of natural resources, allowing all environmental factors to be renewed and available in nature for many years.

One of the best consequences of conservation is the reduction of deforestation, which is very beneficial for the Bald Eagle to maintain its species. That's because this species of eagle keeps its eggs in nests raised in large trees. Without these trees, the bald eagle will not reproduce what will end up exterminating its species over time.

Answer:

I wrote this.

Explanation:

         Adults simply can have PTSD from childhood experiences, more for early adults. For instance poor availability  to comfort as a child or not fully enough boundaries as a child from parents may cause stress in a dult to do better and work hard. Then, they don't think about all that time. You're supposed to heal traumas and really look into yourself and see why and how strong you are for being here, and the problem is people don't do that. If not healed, major outbreaks over slight things.. Refusal and constant playbacks/flashbacks in mind which can cause people to worried or stressed. These signs are serious and need to be taken seriously. It can come from many other places too School, work, out, or just in a simple conversation. Just be mindful, and always kind to get and omit good energy to help these instead of inflicting. 

Answer:

b

Explanation:

because all the rest are about genetics

The one that is not a benefit of genetic engineering is helping to reduce world hunger. The correct option is B.

Genetic engineering is the method of modifying an individual's DNA through the use of research lab innovations.

This could be as simple as changing a single base pair, erasing a region of DNA, or inserting a new DNA segment.

Scientists can use genetic modification to transfer preferred genes from one plant or animal to another.

Genes may also be transferred from one animal to another. GMOs are another term for genetically engineered organisms.

Techniques for genetic engineering have produced the creation of medically valuable things such as human insulin, human growth hormone, and hepatitis B vaccine.

It is also involved in the development of genetically modified organisms such as disease-resistant plants.

Thus, the correct option is B.

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Answer:

Earth is like a magnet, except the atmosphere is the force that pulls us down

Explanation:

Answer:

c. Succinyl-CoA binds at a regulatory site other than the active site

Explanation:

The sigmoid saturation curve is a property of of allosteric enzymes which reflects the cooperaive interactions between the protein subunits in the enzymes.

Allosteric enzymes function through reversible, non-covalent binding of regulatory compounds called allosteric modulators.

Allosteric enzymes  have different binding site for the substrate and for their allosteric modulator.

In the citric acid cycle, succinyl-CoA serves as as allosteric inhibitor of citrate synthase which catalyses the production of citrate from oxaloacetate and acetyl-CoA.

From the given options:

a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction is wrong because it has its own binding site as an allosteric modulator.

b. Succinyl-CoA binds covalently to the enzyme is wrong because allosteric enzymes functions through non-covalent interactions.

c. Succinyl-CoA binds at a regulatory site other than the active site is true because citrate synthase is an allosteric enzyme

d. Succinyl-CoA competes with acetyl-CoA for binding at the active site is wrong because acetyl-CoA binds to the active site while succinyl-Coa binds to the regulatory site.

e. Succinyl-CoA competes with oxaloacetate for binding at the active site is wrong because oxaloacetate binds to the active site while succinyl-Coa binds to the regulatory site.

Explanation:

We have attached a figure that shows the diagram of the given equation.

We need to find how many angles are alternate exterior angles with angle 5?

We know that an exterior angle is the angle that is made outside of the shape and an alternate angle is the angle opposite of a transversal line of another angle.

From the figure, 8, 7, 9, 10, 12, and 11 are the angles that are on the same transversal. 8, 7, 9, 10, and 12 are just exterior. It means that 11 is the alternate exterior of angle 5. So, only one angle is alternate exterior angles with angle 5.

Answer:

1

Explanation:

The polychaete worms living near the underwater volcanic vent are called Pompeii worms because they look like the ancient Roman city of Pompeii and because they are the most heat-tolerant animals on Earth.

Polychaetes are found in many parts of the world and play many important roles in the environment, such as their importance in marine and freshwater ecosystems. They also have a rich fossil record, which helps scientists study evolution, polychaetes are commonly used as model organisms in biological research, and polychaetes are studied to clean up contaminated environments through bioremediation.

Hence, the polychaete worms living near the underwater volcanic vent are called Pompeii worms because they look like the ancient Roman city of Pompeii and because they are the most heat-tolerant animals on Earth.

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Answer:

I think it uses the original strand as a template for replication.

Complete question:

Drag each tile to the correct box.

Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.

Answer:

4. Receptors in her toe receive stimuli

3. The sensory neuron generates an impulse.  

1. Interneurons relay the impulse to motor neurons in the spinal cord.

5. Motor neuron signal the leg muscles    

2. She immediately moves her foot.  

Explanation:

The reflex arc refers to an action mechanism that responds to different stimuli.  It is an involuntary reaction involving different nervous vias. The reflex arc is composed of receptors, afferent nervous fibers, efferent nervous fibers, and effectors.    

Receptors are located in nervous terminals and are widely distributed in the organism. Receptors are capable of receiving stimuli from different nature, and most of them are specialized in one kind of stimuli such as vision, audition, touch, among others. In the exposed example, these sensory receptors were located in the toe, and probably they were touch receptors.

When they receive the stimulus the sensory neuron transforms it into an excitatory nervous impulse that goes to the central nervous system along the afferent nerves. This stage is known as the afferent via, beginning with the environmental information received by sensory receptors, and ending in the arrival of the transcripted message to the central nervous system.

When the central nervous system receives the information, it processes it and sends an appropriate answer according to the stimulus. The message goes along the interneurons to the motor fibers, which are in charge of taking that answer to its destiny, the effectors. Effectors are usually muscles or glands, and they transform the received impulse into a motor answer that executes the reflex action. In the exposed example, the effector in the muscle. This stage is known as the efferent via, beginning in the central nervous system sending an answer impulse and ending in the effector (muscle) executing the answer.

Answer:

Receptors in her toe receive stimuli.

The sensory neuron generates an impulse.

Interneurons relay the impulse to motor neurons in the spinal cord.

Motor neurons signal the leg muscles.

She immediately moves her foot.

Explanation:

right on edMentum

Answer:

A. Concentration of substrate can affect the rate of reaction by two condition given below-

1. At low concentration of substrate, there will be increase in the rate of reaction by increasing the concentration of substrate. There would be catalytic site of enzyme available to bind to substrate.

2. The enzyme becomes saturated with substrate as the substrate concentration increases. At a point when the rate of product formation now depends on the activity or the available active sites of the enzyme itself, so, increasing more substrate will not leads to any effect on the rate of the reaction to any significant level.

Thus, there was not a significant difference in the reaction rate with 800 mg of substrate as compared to 400 m as at 400 mg all the catalytic site or active site are bound already.

B. Increasing the enzyme concentration will lead to increase the rate of reaction at 800 mg as there will be more active sites to bound to substrate.

Answer:

True

Explanation:

It gets passed doen like one dominant brown eye and a recessive blue eye. most likley the brown would be passed down.  

Answer:

3) burning more fossil fuels

Explanation:

Transformative changes are defined as the practical or strategic process that leads to revolutionary changes in the environment.

Transformative changes have a positive impact on the environment and society.

All the given options are revolutionary changes along with positive impact on the environment except burning of fossil fuel. Burning of fossil fuel causes pollution and leads to global warming which is harmful for environment.

Hence, the correct option is 3) burning more fossil fuels.

Answer:

The dependent variable is the amount of ice that melted away

Explanation:

In an experiment, the dependent variable is what is affected by/changed by the IV (which is the type of salt, in this experiment)

The type of salt will change how much ice melted away, which means that the amount of ice that is melted away will be the dependent variable.