What is the difference between an f donor and an hfr donor?.

Answers

Answer 1
The Hfr donor has an F factor integrated into its main chromosome, but the F+ donor does not. ... The entire F factor would have to be incorporated into the recipient cell's chromosome.

Related Questions

How many minutes are there in a 40-hour week?

A:2,000

B:2,400

C:1,400

D:1,200

Answers

The answer is B
Explanation:
You multiply 40 by 60 to get 2,400

There will be 2,400 minutes in a week of 40 hours. This can be calculated by the help of unit conversion of time. Thus, the correct option is B.

What is Unit conversion?

Unit conversion is the change of one form of unit to another form of unit of different system such as conversion of units of measurement of weight from gram to kilogram or milligram.

Unit conversion of one unit to another unit is used in order to have accuracy and avoiding the confusion in measurements. For example, the length of pencil is not measured in kilometers rather it is measured in centimeters or inches, which are comparatively smaller than kilometers. In such a case, one has to convert the unit of length from kilometer (km) to centimeter (cm).

The week of 40 hours can be converted into minutes by:

Number of minutes in 1 hour = 60

Therefore, the number of minutes in 40 hours = 60 × 40 = 2,400 minutes

Therefore, the correct option is B.

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What is both the thickest and longest nerve in the body?

Answers

Answer:

The sciatic nerve

Explanation:

When looking at the organization of the human body, smaller units lead to progressively larger units. For instance, groups of atoms are called molecules, groups of cells are called _______________, and various organs that work in coordination are called organ systems.

Answers

Answer:

Tissues because tissue is made out of celss

Mendel knew that the variations in the offspring generations resulted from his experiments because he

Answers

Mendel was able to attribute the variation observed in the offspring of his experiment to the controlled fertilization process.

Mendel was able to control pollination and, thus, the fertilization process in the pea plants used for his experiment.

Mendel was able to effectively predict the outcome with self-pollination or cross-pollination with different results coming from each. Thus, he logically concluded that the variation observed in the offspring of his crosses is due to the fact that he controlled the fertilization process.

More on Mendel's experiments can be found here: https://brainly.com/question/3186121?referrer=searchResults

URGENT MY PROJECT IS DUE TOMORROW

IS CELL REPLICATION BASICALLY MITOSIS?

Answers

Answer:

Yes, mitosis means each cell is replicated perfectly without any changes or alterations.

This process involves replication of the cell's chromosomes, segregation of the copied DNA, and splitting of the parent cell's cytoplasm.

Choose one of the food chains
shown within the food web in Figure 4-3. Write
a paragraph describing the feeding relation-
ships among the organisms in the food chain.

Answers

Answer:

I can't see the figure so sorry I can't answer

Which of the following processes does not contribute to carbon cycling?
A. Condensation
B. Photosynthesis
C. Combustion
D. Respiration

Answers

Answer:

A. Condensation

Explanation:

Condensation is the process that does not contribute to carbon cycling. It is the process by which water vapor in the air is changed into liquid water.

Answer:

A. condensation

Explanation:

#carry on learning


Potato Osmosis Lab
Perform the calculations for the following on a separate sheet of paper:
-300 mL of 0.0 M sucrose solution
-300 mL of 0.2 M sucrose solution
-300 mL of 0.4 M sucrose solution
-300 mL of 0.6 M sucrose solution
-300 mL of 0.8 M sucrose solution

Answers

Answer:

- 102.6 g

-205.2 g

- 41.04 g

- 61.56 g

- 82.08 g

Explanation:

Hello there?

I have attached the calculations for the above answers in the images above.

I hope it helps you out to understand better.

The cell theory states that
(a) all organisms are made of one or more cells.
(b) all cells come from already existing cells.
(c) all the life functions of organisms occur within cells.
(d) all of the above

Answers

Answer:

All of the above

Explanation:

hope this helps

3) When two atoms bond chemically it is because of the interaction between

A) the nuclei of each atom.

B) the protons in each atoms.

C) all electrons in the atoms.

D) the valence electrons in each atom​

Answers

Answer:

C - All electrons in the atoms

Explanation:

It depends on the bonding for an explanation.

If one atom is a metal and one is a non metal it will be ionic. This is because one atom transfers its electron to the other atom giving them both a charge. They will then be bonded due to opposite forces of attraction.

If both atoms are non metals it will be covalent. Electrons pair together in the center of two atoms that have merged together and they share their electrons.

(Makes more sense with diagrams)

Hope this helps you!

Look at the diagram Which structure holds the original code from the DNA gene?​

Answers

Answer:

The answer is 4/D)4. Don't expect me to get scientific in this, I'm using brainly and coursehero after all. Sorry for being a year late, hopefully it took you a year to finish the test. . .

Explanation:

K12/Keystone

ILL GIVE U BRAINLIEST
What health-related careers would be of most interest to you? How would learning more about anatomy be helpful for that career?

Answers

A Psychiatrist. A psychiatrist needs to know the human anatomy because they need to be able to prescribe medicine while also knowing the consequences of the patients body. If a psychiatrist was to prescribe a medicine without knowing the human anatomy the psychiatrist would be at risk of injuring the patient. In conclusion learning the human anatomy and mastering it would be helpful for a psychiatrist because it prevents less risk of harming a patient while prescribing a medication.

explain how the skin on the human body functions similarly to the cell membrane of a cell.

Answers

Answer:

The skin surrounds the entire body just as the cell membrane surrounds the entire cell. Both the skin and the cell membrane are semi-permeable, meaning that they only allow specific substances to enter or exit the body.

which farm animal has the largest eyes of any land mammal?

Answers

Answer:

The horse

Explanation:

The horse, being a farm animal, has the largest eyes of any land animal; the eyes of a horse are about 1.34 inches diameter wise.

I hope this helped!! ^v^

what occurs during a point (substitution) mutation?

Answers

Answer:

A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome.

Explanation:

Hope this helps!

based on the magnetic field line diagrams, what will happen next with these two sets of magnets?

Answers

The answer is A

The magnets in step 1 will repel and the ones in set 2 will attract

Answer: its A

Explanation:

Hurricane Katrina chart

Please I’m doing a project and I need help ! I’ll give 20 points and maybe even brainliest

Answers

Answer:

r

Explanation:

Why does DNA need to replicate before cells divide?

Answers

Answer:

Below:

Explanation:

Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.

whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.

Which statement about biochemical reactions is false?

Answers

So where are the statements

The statement that is false is that they can create new energy during the reaction. The correct option is a.

What is biochemical reaction?

Biochemical reactions are chemical processes that occur in live cells to support life and promote cell growth.

To expedite most biochemical reactions, an enzyme is a type of biological catalyst.

The amount of activation energy required for the reaction to start is decreased by enzymes. Most enzymes are proteins that only interact with one particular chemical, known as their substrate.

The ratio of atoms in the reactants and products must always be balanced.

They have the capacity to store energy as a covalent bond. They have the ability to alter the cell's energy's shape. They follow the laws of physics and chemistry.

Thus, the correct option is a.

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Your question seems incomplete, the missing options are:

a. They can create new energy during the reaction.

b. They must always balance the number of atoms in the reactants

and the products.

c. They can store energy in the form of a covalent bond.

d. They can change the form of energy found in the cell.

e. They obey the rules of chemistry and physics.

PLEASE HELP ASAPPP!!


1. List three examples of predator-prey relationships you have observed locally:
(a)
(b)
(c)

Answers

Answer:

(a) frogs-flies

(b) birds-earthworms

(c) snakes-mouses

Answer: Lion-Zebra, Bear-Salmon And Fox- Rabbit

Meaning: Lion eats zebra bears eats salmon and fox eats rabbits

Explanation: There are literally hundreds of examples of predator-prey relations. A few of them are the lion-zebra, bear-salmon, and fox-rabbit. A plant can also be prey. Bears, for example, feed on berries, a rabbit feeds on lettuce, and a grasshopper feeds on leaves.

Why do the alveoli fill with fluid.

Answers

Answer:

Your lungs contain many small, elastic air sacs called alveoli. With each breath, these air sacs take in oxygen and release carbon dioxide. Normally, this exchange of gases occurs without problems. But sometimes, the alveoli fill with fluid instead of air, preventing oxygen from being absorbed into your bloodstream.

Explanation:

Answer:

The fluid represents the outermost layer of the alveolar surface that is directly exposed to air and thus to the environment. Alveolar fluid prevents desiccation of the epithelial cells and also functions as a physical protection barrier against inhaled particles and irritants.                                        Explanation:     hope this helps

deoxygenated blood is transported to the pulmonary capillaries in the lungs by the pulmonary veins; oxygenated blood is transported away from the pulmonary capillaries by the pulmonary arteries is false

Answers

Answer:

no it is not false can be transported

a bacterium is infected with an experimentally constructed bacteriophage

Answers

The complete question is:

a bacterium is infected with an experimentally constructed bacteriophage composed of the T2 phage protein coat and T4 phage DNA. The new phages produced would have

A) T2 protein and T4 DNA

B) T2 protein and T2 DNA

C) a mixture of DNA and proteins of both phages.

D) T4 protein and T4 DNA

E) T4 protein and T2 DNA

A bacterium infected with an experimentally constructed bacteriophage will give new phages with the virus' DNA and the type of proteins that this DNA encodes.

A bacteriophage is a virus that attaches itself to a bacteria and uses it to replicate itself. Viruses have two main parts, a protein coat and their DNA inside it.

The experimentally constructed bacteriophage has one type of protein that makes the coat, the T2. This type of protein will allow the virus to attach and infect the bacteria. Once the virus attaches itself to the bacteria, it will introduce its DNA, T4 type, and use the bacteria elements to replicate it and create new phages.As a result, the new phages will have T4 DNA, and the proteins that the virus synthesizes will be the same type as the DNA.

In conclusion, The new phages produced would have D) T4 protein and T4 DNA.

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Oxygen is consumed in the mitochondria during oxidative phosphorylation. What is the fate if this oxygen

Answers

Oxygen is consumed in the mitochondria during oxidative phosphorylation. What is the fate of this oxygen? Oxygen can be reduced to water by electron respiratory chain. You just studied 8 terms!

What transformation takes place wen u light up a match

Answers

Answer:

Transformation that happens when you strike a match is from mechanical energy to thermal energy.

Explanation:

When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. (Thermal energy is heat energy)

Answer:

mechanical energy to thermal energy.

Explanation:

When the match is struck, it burns and the chemical energy in it produces heat energy and light energy

When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. This is a transformation from mechanical energy to thermal (heat) energy.

In regular alcohol consumers, lipids get accumulated in the liver and are stored as small droplets in liver cells and this condition is known as ________.

Answers

Answer:

Fatty Liver

Explanation:

Which of the following are molecules? (Select all that apply.)
K
MgCl2
H2
Mg
Grade -5-

Answers

Answer:

MgCI2

H2

Explanation:

any combination of elements is a molecule

transcription begins at a promoter. what is a promoter?

Answers

Answer:

A site in DNA that recruits the RNA Polymerase

Explanation:

Some fungal species live in or on plants, producing compounds that can kill herbivores while feeding off of sugars from its plant host. What type of relationship does this fungus have with its host

Answers

This is a symbiotic relationship because both the plant gets benefitted with protection from the fungus, and the fungus gets benefitted by getting food from the sugars in the plant.

How did mendel prove the law of segregation.

Answers

Mendel proposed the Law of Segregation after observing that pea plants with two different traits produced offspring that all expressed the dominant trait
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