Answer:
The correct answer is - b. has become F-.
Explanation:
In the case of the cross of two different strains, some genetic material moves to the F- strain from the Hfr strain, but due to genome size, it's not possible that all the genes can pass into a single bacterium.
Instead of complete transfer, each individual F- cell gets a different and random subset of genes from the Hfr. There is no translocation and F' does not contain his+ trp+.
how many people in the world
Answer:
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Explanation:ASjkbxzjb
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A penicillin reaction is a life-threatening event. In those who are allergic to penicillin, the drug acts as a __________ that binds to blood proteins, causing a strong immune response.
Answer:
A penicillin reaction is a life-threatening event. In those who are allergic to penicillin, the drug acts as a hapten that binds to blood proteins, causing a strong immune response.
Explanation:
Low molecular weight chemicals can bind to antibodies, but cannot activate B lymphocytes by themselves (they are not immunogenic). To generate specific antibodies to these small chemicals, immunologists typically bind them to macromolecules prior to immunization. In these cases, the chemical is called a hapten. Penicillin G is a typical hapten that tends to covalently bind to lysine residues both in solution and in protein-bound cells. Penicillin is a drug that behaves as a hapten, since the beta-lactam ring under physiological conditions opens and reacts with the lysine residues of proteins, forming a complex that is the main antigenic determinant of penicillin and other beta-lactams and is capable of to stimulate responses mediated by antibodies or by T cells.
explain water cycle with the help of diagram
Explanation:
The water cycle is defined as a natural process of constantly recycling the water in the atmosphere. It is also known as the hydrological cycle or the hydrologic cycle. During the process of the water cycle between the earth and the atmosphere, water changes into three states of matter – solid, liquid and gas.hope it helps.stay safe healthy and happy...the value 10.00 has sigificant figuers
Answer:
1.e 1,0,0,0
Explanation:
it's just that
Hemophilia is an X-linked recessive condition in which blood does not clot properly. Queen Victoria of England had one allele for hemophilia. Most of her male descendants had the disorder, but few females had it. Why did hemophilia occur more frequently in Queen Victoria’s male descendants?
Answer:
Because hemophilia is an X-linked recessive condition.
Explanation:
As the problem states, hemophilia is an X-linked recessive condition.
Meaning that in Queen Victoria's female descendants (coded XX) which inherited the Queen's one allele, for hemophilia to appear in them it would be necessary to inherit another hemophillia-carrying allele from the father.The Queen's male descendants (coded XY) would always manifest hemophilia if they inherited the Queen's hemophilia allele, as they possesed only one X gene.3 Peroxisomes are cellular organelles: A. with their own genome B. present only in protists C. without membrane OR D. collaborating with the nucleus O E site of some oxidation reactions
Answer:
E.site of some oxidation reactions
are oxygen and glucose products in cellular respiration?
Answer:
no the oxygen and glucose are used to produce ATP in cellular respiration
Which of the following is a material?
A. Wood
B. Rigid
C. Transparent
D. Dull
Answer:
A. Wood
Explanation:
Material is a physical object (something made up of molecules, atoms etc.)
Other listed options are characteristic of that given material. For example, an iron bar is a material, but its shiny lustre is its characteristics.
The material out of the given options is wood. Hence, the correct option is (A) Wood.
Material is something that is used to produce an item or thing. It is an essential element of the natural or synthetic substances that are employed for the manufacturing of different products. Material is used in everyday life as well as in the technical industry.
It refers to a substance that can be used as a raw material or as a semi-manufactured product to make an end-product. Materials are used to create a wide range of things, including clothing, food, medicines, buildings, automobiles, and other consumer goods.
Materials can be classified based on a variety of characteristics, including their composition, structure, and properties. Types of Materials: Materials can be classified into the following categories:
1. Natural materials, which include wood, rubber, and leather
2. Synthetic materials, such as nylon and polyester
3. Semi-synthetic materials, such as rayon
4. Composite materials, which include concrete and fiberglass
5. Electronic materials, which include semiconductors and superconductors
Features of materials: Materials have some characteristics, such as a particular physical and chemical composition, density, texture, and color, that differentiate them from other substances. Furthermore, materials can have a variety of properties, including thermal conductivity, electrical conductivity, tensile strength, ductility, and malleability.
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What molecules transfer heredity from parents to offspring?
Answer:
a molecule called DNA (deoxyribonucleic acid) is passed from adult organisms to their offspring during reproduction.
DNA molecules transfer heredity from parents to offspring.
What is DNA?DNA or deoxyribonucleic acid exists considered the genetic material that transmits genes from Parents to offspring. DNA exists found almost inside every cell. The molecular structure of DNA existed discovered by James Watson and Francis Crick in the year 1953. They obtained Nobel Prize for it in the year 1962.
DNA exists created up of molecules called nucleotides. Each nucleotide contains three elements: a phosphate group, which stands for one phosphorus atom bonded to four oxygen atoms; a sugar molecule; and a nitrogen base.
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It is observed that constipation is more common among people in the western countries who eat more meat and processed food than us. What could be the reason for this? What should be changed in their diet?
I already know this answer, just checking, it's cuz of roughage
Answer:
yes your answer is correct
Explanation:
Constipation happens when the colon absorbs too much water, this can occur if the muscles in the colon are contracting slowly or poorly, causing the stool to move too slowly and lose more water. As meat need much water to digest, so they leads to problem of constipation. Hence, they should eat sufficient amount of water to cure constipation.
Constipation is common among people in western countries who eat more meat and processed food because there is no enough roughage in their bodies which prevents constipation .Fruits and vegetables like like corn etc contains lot of roughage.
Answer:
hi here is your answer is that Constipation is common among people in western countries who eat more meat and processed food because there is no enough roughage in their bodies which prevents constipation .Fruits and vegetables like like corn etc cpntain lot of roughage
Explanation:
i hope this answer will help you
What are physical and chemical properties
Question 8 of 24
Which item is a carbon sink?
A. Beach sand
B. Ocean water
C. Glaciers
D. Forest fires
SUBMIT
Answer:
oceans water
Explanation:
Which toxin is of particular concern for the infected host if antibiotics are used resulting in mass pathogen lysis? Cholera toxin Tetanus toxin Botulinum toxin Endotoxin
Answer: Endotoxin
Explanation:
Antibiotics generally target the cell walls of bacteria with the aim to dissolve it so that the body's immune system can be better able to attack it. When the antibiotics target these cell walls, pathogen lysis occurs and ruptures the cell.
Endotoxins are located in those cell walls and once free, are a source of concern because they can cause an array of medical problems with inflammation being amongst the mildest.
╭☞ Which toxin is of particular concern for the infected host if antibiotics are used resulting in mass pathogen lysis?
ANSWER:╭☞ Endotoxin
Explanation:
Base on our researcher endo toxin is particular concern for the infected host if antibiotics are used resulting in mass pathogen lysisFor More Information:
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___________
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what are the difference between DNA and RNA
Answer:
There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
Why do you think taking an action or providing measures to prevent disasters ever though you are not experiencing it yet is important?
_____________ is a post-translational modification that occurs in the endoplasmic reticulum or Golgi apparatus to make proteins functional.
Answer:
Lipidation is a post-translational modification that occurs in the endoplasmic reticulum or Golgi apparatus to make proteins functional.
define cell and atom
Answer:
cell is the structural and functional unit of live.
Atom are the smallest particle of chemical element
Describe a metabolic pathway that is inhibited by the action of a pesticide.
Explanation:
The mecanism is termed as feedback inhibition.
Explanation:
In an enzyme catalyzed sequential reaction the end product of that reaction inhibits the activity of the activity of the enzyme catalyzing the ist step This type of regulation is called Feed back regulation or feedback inhibition.
The main function of human body is to maintain the homeostasis of the all the components it contains.When the end product of an ongoing enzyme catalzsed sequential reaction is produced in a high lebel at that time to maintain its own homeostatis that end product inhibits the functioning of the enzyme catalzsing the ist step of that biochemical reaction.
For Example Cytidine tri phosphate inhibits the activity of aspartate transcarbamoylase catalyzing the de novo biosynthesis pathway of pyrimidine metabolism.
The statement that there must be a preexisting cell in order for a new cell to form is known as cell
Answer:
cells duplicate so when there is no cell it cant make any
Explanation:
The statement that there must be a preexisting cell in order for a new cell to form is known as cell theory.
What is cell theory?The scientific idea that cells make up living organisms, that they are the fundamental structural and organizational unit of all species.
They all originate from previously existing cells is known as cell theory. It was first proposed in the middle of the nineteenth century.
Because cells are the building blocks of all life, cell theory is essential for our understanding of biology.
We can have single-celled organisms like yeasts and bacteria. All living things grow and develop on the basis of cell division, or the division of a cell from one to two to four.
A vital process for life is mitosis. A cell divides into two identical daughter cells after duplicating all of its components, including its chromosomes.
Thus, the statement "cell arises from pre-existing cells" comes from cell theory.
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What measurements are in the si system
Answer:
Length - meter (m)
Time - second (s)
Amount of substance - mole (mole)
Electric current - ampere (A)
Temperature - kelvin (K)
Luminous intensity - candela (cd)
Mass - kilogram (kg)
Explanation: in the chart above are the measurements in the si system.
why your 21st century sophisticated, how do you explain the role of the plant in the change of the air in the jar
Answer: The gas of Fire constrains the atoms that make up oxygen in the air. Plants release oxygen, and take in carbon dioxide.
Summarize the steps of Scientific method in one paragraph in your own words.
Answer:
Ask a question or identify a problem.Gather information and form a hypothesis.Create an experiment to test your hypothesis.Collect data and observations by doing/ performing the experiment. Draw a conclusion.Share your findings.If you want as paragraph:
Ask a question or identify a problem. Gather information and form a hypothesis. Create an experiment to test your hypothesis. Collect data and observations by doing/ performing the experiment. Draw a conclusion. Share your findings.
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Identify the phases of meiosis I described below
Which of the following was not part of the original cell theory, but was added later after we learned more about cellular structure
where is full question man
Differentiate between pathogenicity and hypersensitivity; Also write different methods of inoculating the plants.
Answer:
As nouns the difference between pathogenesis and pathogenicity. is that pathogenesis is the origin and development of a disease while pathogenicity is the quality or state of being capable of causing disease.
A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?
More bubbles will be produced because the solution is becoming more concentrated.
Fewer bubbles will be produced because of fewer collisions of reactant molecules.
The solid will get smaller at a faster rate because of more collisions of reactant molecules.
The solid will get larger at a slower rate because precipitate is coming out of the solution.
Answer: Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Answer:
B) Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Explanation:
on Edge
In a diploid cell, a FISH probe should produce ____________ signals in metaphase FISH and ____________ signals in interphase FISH.
Answer: Four, two
Explanation:
FISH (fluorescence in situ hybridization) is a technique for chromosome mapping with probes that emit fluorescence and allow the visualization, distinction and study of chromosomes of nuclei in metaphase or inferophase. In this way, any type of anomaly such as inversions, aneuploidies, duplications or microdeletions can be seen. To do this, a non-specific DNA staining is performed with DAPI (a fluorophore that marks the nucleus where DNA is present) and the fluorescence will be seen under the microscope.
When cells are in metaphase, their chromosomes are condensed in preparation for cell division. To stop them in metaphase, colchicine is used which is a microtubule depolymerizing agent responsible for separating the sister chromatids of a chromosome, thus preventing the progression of cell division and arresting the cell cycle in metaphase. Here we will see translocations, microdeletions or duplications.
Interphase FISH is used to see decondensed chromatin, which allows higher resolution in detecting small abnormalities. It is mainly used for the detection of aneuploidies or large deletions, duplications or translocations when samples are difficult to grow or are scarce, as in the case of fetal or tumor cells. It is not possible to distinguish between a normal karyotype and a karyotype showing a balanced translocation. In addition, it can be used in the analysis of solid tumors, which divide very infrequently.
During metaphase, the chromosomes are duplicated so there would be two sets of chromosomes (a total of four chromosomes). Then, there would be four signals for each probe. During interphase, the chromosomes are not dupicated. Since it is a diploid organisms, there would be two chromosomes and this will represen two signals for probe.
Provide details about Meiosis.
Explanation:
a type of cell division that results in four daughters cells each with half the numbers of chromosomes of the parent cell , as in the production of gametes and plant spores
The protein calcineurin binds to the protein calmodulin with an association rate of 8.9 × 103 M-1s-1 and an overall dissociation constant, Kd, of 10 nM. The dissociation rate kd is:_____. Please explain step by step.
A. 8.9 × 10^3 M-1s-1
B. 8.9 × 10^2 s-1
C. 1.1 × 10-10 s-1
D. 8.9 × 10-5 s-1
Answer:
D
Explanation:
From the information given:
Association rate [tex]K_a[/tex] = [tex]8.9 \times 10^3 M^{-1}s^{-1}[/tex]
dissociation constant [tex]K_D[/tex] = 10 nM
dissociation rate [tex]K_d[/tex] = ???
Using the following relation from equilibrium dissociation constant to determine the dissociation rate, we have:
[tex]K_D =\dfrac{ K_d}{K_a}[/tex]
[tex]K_d = K_D \times K_a[/tex]
[tex]K_d =(10*10^{-9} \ M) \times (8.9*10^3 \ M^{-1}{s^{-1})[/tex]
[tex]\mathbf{K_d =8.9*10^{-5} \ {s^{-1}}}[/tex]
What is silk thread?
