Bacteria such as e. coli and salmonella produce invasins that bind host cells, thus causing the cells to:

Answers

Answer 1

Answer:

kill cells and tissues outright

Explanation:

Sometimes bacteria multiply so rapidly they crowd out host tissues and disrupt normal function. Sometimes they kill cells and tissues outright. Sometimes they make toxins that can paralyze, destroy cells' metabolic machinery, or precipitate a massive immune reaction that is itself toxic

Acrroding to http://needtoknow.nas.edu/id/infection/how-pathogens-make-us-sick/


Related Questions

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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What molecule is the source of information for transcription.

Answers

DNA is the molecule, which is the source of information for transcription.

• During the process of transcription, RNA polymerase is an enzyme, which is accountable for copying a sequence of DNA into a sequence of RNA.

• The RNA polymerase monitors the phenomenon of transcription.

• At the time of transcription, the information is stored within a molecule of DNA, which is further copied into a new molecule of messenger RNA.

Thus, the correct answer is DNA.

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Where in the cell would you expect to find the greatest activity of the pyruvate dehydrogenase complex?

Answers

Answer:

Mithochondria

Explanation:

In eukaryotes, the pyruvate dehydrogenase complex, like the enzymes for citric acid cycle and oxidation of fatty acids, is located in the mitochondrion, where is associated with the surface of the inner membrane facing the matrix.

In the cell, mitochondria are the place where it expects to find the greatest activity of the pyruvate dehydrogenase complex.

What is the pyruvate dehydrogenase complex?

The three-enzyme complex known as the pyruvate dehydrogenase complex (PDC) is responsible for pyruvate carbonylation, which converts pyruvate to acetyl-CoA.

This complex connects the glycolysis metabolic pathway to the citric acid cycle by allowing acetyl-CoA to be used to perform cellular respiration.

The enzyme pyruvate dehydrogenase catalyzes the reaction between pyruvate and a lipoamide, which yields acetylated dihydrolipoamide and carbon dioxide. The process requires the coenzyme thiamine pyrophosphate.

Therefore, the site where you find the greatest activity of the pyruvate dehydrogenase complex is mitochondria.

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What is the difference between chromosomes, chromatin, and DNA?
I

Answers

Answer:  

A chromosome is a long DNA molecule with part or all of the genetic material of an organism. and I can't think of the other one sorry.

Explanation:

Name the following:
The cell that covers a large area and is broad and flat in shape.​

Answers

Answer:

skin is the answer please and brainlest pleaaasssseeee

!!!!NEED HELP NOW!!!!


Describe the structures within cells that govern heredity, and describe where they are located. Make sure to have 5 sentences which have to be all on topic use great grammar along with great vocabulary usage.


!!PLEASE ANSWER CORRECTLY!!

Answers

Within cells, the long strands of DNA form condensed structures called chromosomes. Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes. cell nucleus
DNA is the hereditary material in humans and almost all other organisms. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA). DNA contains the code for building and maintaining an organism.

Answer:

The structure that is responsible for the governance of a cell is the DNA, which is located in the nucleus of the cell.

Explanation:

DNA: It is the genetic material containing genetic information.It is present in the chromosomes inside the nucleus. The genetic information of DNA is stored as code in the four nucleobases namely Adenine, Guanine, Cytosine, and Thymine. The most unique feature of the DNA is that it is self-replicated and makes similar copies of itself. DNA is a double helical structure found in all living organisms including some viruses.In Eukaryotes along with the nucleus, DNA is also present in Mitochondria and Chloroplasts.

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What two types of organic molecules make up carbohydrates?

Answers

Answer:

carbon and hydrogen

Explanation:

Have a nice day

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

Scientists can study the human genome using DNA fingerprinting.
DNA fingerprinting allows scientists to

B. break the hydrogen bonds in a gene to allow DNA to replicate itself.

c. determine the location of an abnormal gene on an individual's
chromosome.

A. prevent a gene from matching complementary bases onto a strand of
RNA.

Answers

Answer:

your answer is C.

Explanation:

DNA fingerprinting allows researchers to determine the location of an abnormal gene in a person's chromosomes.

What are the steps in DNA fingerprinting?

DNA fingerprinting is a laboratory technique used to determine the likely identity of a person based on the nucleotide sequences of certain regions of a person's DNA that are unique to individuals.

DNA fingerprinting was used early in legal disputes, particularly in solving crimes and establishing paternity. It is also used to detect inherited genetic diseases and can be used to identify genetic matches between tissue donors and recipients.

In DNA fingerprinting, researchers collect DNA samples  from various sources, such as hair from  crime scenes and blood from  victims and suspects. They then narrow down scattered sections of repetitive DNA in these samples.

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vai trò của nước đối với quang hợp là

Answers

Answer:

At a fundamental level, water provides electrons to replace those removed from chlorophyll in photosystem II. Also, water produces oxygen as well as reduces NADP to NADPH (required in the Calvin cycle) by liberating H+ ions.

Explanation:

What are the three types of posttranscriptional processing?.

Answers

Answer:

5' capping, addition of the poly A tail, and splicing.

Explanation:

I got it right on the test!!!! I hope this helps.

objects are brought into focus on the retina by changes in the curvature and thickness of the

Answers

hi the answer is lens

Objects are brought into focus on the retina by changes in the curvature and thickness of the lens.

What is eye lens?

The lens basically directs light rays onto the retina. The lens is clear and replaceable if necessary. As we age, our lenses deteriorate, necessitating the use of reading glasses.

The lens is normally clear and is located behind the iris. The pupil directs light to the lens.

Small muscles attached to the lens can cause the lens to change shape, allowing the eyes to focus on objects that are close or far away.

Light bends (refracts) and focuses on the retina at the back of the eye as it passes through the lens.

The lens's thickness and curvature can be adjusted to focus on objects at various distances and ensure that the image is as clear as possible (this process is known as accommodation).

Thus, eye lens helps to focus the object.

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Body size in mice (length from nose to base of tail) is controlled in part by genetics. The following data shows the number of mice grouped by lengths:

Length Group Number of Mice
Very small (4-5 cm) 2
Small (5-7 cm) 6
Average (7-10 cm) 15
Large (10-12 cm) 7
Very large (12-13 cm) 1
Based on this data and your knowledge of inheritance patterns, identify the inheritance pattern that this trait follows in mice.

(1 point)

complete dominance

polygenic

incomplete dominance

pleiotropic

Answers

Answer:

polygenic!

Explanation:

Based on this data and your knowledge of inheritance patterns, identify the inheritance pattern that this trait follows in mice is polygenic.

What is Polygenic inheritance?

Polygenic inheritance occurs when one character is controlled by two or more genes.

Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin colour, eye colour and weight.

Thus, option "B" is correct.

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give 3 exampels of where potential energy was converted to klinetic energy

Answers

Answer:

1. A rock falling off a cliff

2. Roller coaster starts plummeting from the top

3. Pendulum swings from the top to the middle, once it starts the second up swing the kinetic turns back into potential energy

Answer:

1. Pushing a large rock down a hill.

2. Kicking a stationary soccer ball.

3. Releasing a taut rubber band

I don't know how varied your class's examples of potential energy have been so far, but there are many kinds if you need more variety.

Explanation:

You can just use your imagination for these if you want to! Potential energy is the energy that an object can have, its potential to have energy (just like it says), while kinetic energy is the energy of a moving object. All you need to do is take a still object and apply force to it.

Which statement explains why ammonites are a good example of an index fossil?

Answers

Answer:

Ammonites existed only in the oceans.

Explanation:

Index fossils serve as a relative dating marker for geologic time periods and the rocks formed at those times. The fossils are of species that lived for only a short while, though that could be millions of years, and were widespread on the Earth. Ammonites are good index fossils for several reasons. First, they are easily identified by their spiral shells.

The statement explains why ammonites are a good example of an index fossil

Ammonites existed only in the oceans.

What is an Index fossil?

Index fossil are plants and animals which have been preserved in rock

surfaces over a long period of time and are usually characteristic of a

particular geographical location.

Examples of Index fossils include:

Ammonites Brachiopods, Graptolites NanofossilsTrilobites

Ammonites are animal fossils which are characteristic of the marine

environment.

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Which best describes convention

Answers

Answer:a way in which something is usually done, especially within a particular area or activity.

Explanation:"the woman who overturned so many conventions of children's literature"

A network of interwoven anterior rami of spinal nerves is a:

Answers

The answer is plexus

Which statement is true?(1 point)

Hair color and IQ are examples of Mendelian traits.


Mendelian traits follows a normal distribution.

Mendelian traits are controlled by multiple genes.

Mendelian traits cannot be shown on a bell curve.

Answers

Answer:

A. Hair color and IQ are examples of Mendelian traits.

Explanation:

Answer:

Mendelian traits cannot be shown on a bell curve.

Explanation:

NO LINKS. PLZZ HELP WILL MARK BRAINLIEST AND 55 POINTS!

Which nucleic acid moves the code for protein synthesis from the nucleus to the ribosomes?

A. dRNA

B. tRNA

C. rRNA

D. mRNA

Answers

Answer:

mRNA

Explanation:

enjoy mate

Answer:mRNA

Explanation: Just had this unit.

HELP ASAP

What evidence shows that biological molecules on earth form naturally?/What evidence shows that biological molecules on Earth form naturally?

Answers

The first evidence for the origin of life on the Earth was given by Oparin and Haldane independently in the 1920s.

THIS AIN'T BUILD A B-

What kind of fish is on the brink of commercial extinction?


Question 3 options:


Alaska Wild Salmon



The Pacific Cod



North Atlantic Salmon



South Atlantic Swordfish

what are known to swim near dolphins for protection?


Question 5 options:


cod



tuna



salmon



sharks

Answers

Answer:

The legendary humpback Mahseer, one of the worlds most iconic freshwater fish, is on the brink of extinction according to scientists from Bournemouth University in the UK

Explanation:

hope this helps I don't know Its correct answer

What are the nerve roots that are shaped like a horse's tail and that extend down from the end of the spinal cord?

Answers

Answer:

a. Cauda equina

Explanation: is correct

Which of the following statements is TRUE?

Paraplegia may occur when traumatic injury occurs along the upper vertebral column C1 to C7.
Quadriplegia may occur when traumatic injury occurs along the upper vertebral column C1 to C7.
Paraplegia is paralysis of everything below the neck.
None of the above

Answers

Answer:

b. Quadriplegia may occur when traumatic injury occurs along the upper vertebral column C1 to C7.

Explanation: is correct

Answer:

B

Explanation:

(thank you sunrise you've helped me with like 4 units now)

Which objects would cause refraction of light? (Select all that apply.)
prisms
magnifying glasses
wooden boxes
eyeglasses

Answers

Answer:

prisms

eyeglasses  

Explanation:

i new the answer

have a great day ;)

how are unicellular and multicellular organisms alike

Answers

Answer:

that they exhibit all the functions of life

Explanation:

4. Arrange Write the following steps in the order in which they occur during glycolysis

A six-carbon molecule is broken down into two three-carbon molecules.

Two NADP molecules are converted into two NADH molecules.

Two phosphate groups from two ATP molecules are joined to glucose.

Two three-carbon molecules are converted into two Folecules of pyruvate as four
molecules of ATP are produced.

Answers

The correct order of glycolysis reactions is:

Two phosphate groups from two ATP molecules are joined to glucose.Two NADP molecules are converted into two NADH molecules.A six-carbon molecule is broken down into two three-carbon molecules.Two three-carbon molecules are converted into two molecules of pyruvate as four  molecules of ATP are produced.

During glycolysis, the glucose molecule is converted to Glucose-6-phosphate as a result of phosphorylation. The phosphate group from ATP is joined to the glucose molecule by an enzyme known as hexokinase.

The glucose-6-phosphate then undergoes isomerization to become fructose-6-phosphate which is then phosphorylated again by the hexokinase enzyme to become fructose-1,6-biphosphate.

An aldolase enzyme converts fructose-1,6-biphosphate to one molecule of glyceraldehyde-3-phosphate and one molecule of dihydroxyacetone phosphate. The latter is then converted to another molecule of glyceraldehyde-3-phosphate.

A dehydrogenase enzyme converts glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate with NADH being generated from the reduction of NAD+.

A kinase enzyme then converts 1,3-bisphosphoglycerate to 3-phosphoglycerate with ATP being generated from ADP. A mutase enzyme quickly converts the 3-phosphoglycerate to 2-phosphoglycerate while an enolase enzyme converts the latter to phosphoenolpyruvate.

Finally, a pyruvate kinase enzyme converts phosphoenolpyruvate to pyruvate with another ATP being generated.

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what is the structural function labelled M?​

Answers

Answer:

your answer is correct it is B

connecting the bone to the muscle

mark me as brillianist plz

The use of biological processes to protect and repair the environment from negative human impacts is part of a growing area of biological applications called .

Answers

Bioremediation is that process which use the biological organisms to protect and repair the environment.

Bioremediation refers to the use of biological agents or processes in order to protect and repair the environment from negative human impacts. This phenomenon depends on stimulating the growth of specific type of microbes that utilize contaminants such as oil, solvents and pesticides as a sources of food and energy.

These microbes has the ability to use these harmful substances as a food and convert these contaminants into water as well as harmless gases like carbon dioxide so we can conclude that bioremediation is that process which use the biological organisms to protect and repair the environment.

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Animals are helpless when their natural habitat is damaged by floodsor forest fires. What are the ways to prevent these from occurring sothat animals do not suffer?

Answers

Answer:

Obey local laws regarding open fires, including campfires, Keep all flammable objects away from fire, have firefighting tools nearby and handy, Carefully dispose of hot charcoal,

Drown all fires, Carefully extinguish smoking materials, do NOT use fireworks in heavily wooded areas, use in large, open areas with concrete flooring.

Explanation:

What does the nucleus do.

Answers

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information.
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