S. aureus is gram positive. What differences in strains might account for differences in phage susceptibilities?

Answers

Answer 1

S. aureus is indeed gram-positive but within the bacteria classed as gram-positive, there are differences that might predispose them to infection by phages.

S. aureus as an organism usually adapts to their environment through mutations on their membranes which can be proteins e.g. surface proteins, or receptor molecules e.g. sugar receptors.

In preventing invasion by phages, mutations are gained that prevents attachment to the bacteria cell surface. This effectively prevents the binding of the phage to the bacteria thus preventing infection.

It is also worthy to note that the differences in bacteria strain could range from a few nucleotides to large variations in chromosomes and thus can aid in identifying specific strains that might have beneficial factors in the context of disease prevention.

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Related Questions

A-Level Environmental Science exam question:

Since the 1950s, the exploitation of the rare-earth elements has increased from a few tonnes per year to over 150 000t per year. They are used in a wide range of applications, including new developments in transport, electronics and healthcare.
Although the main metals used following the industrial revolution are still important, economic development since the mid 1900s has involved the use of relatively small quantities of a much wider range of metals.
Many rare-earth elements have a relatively high mean crustal abundance, but they rarely occur in locally concentrated deposits.
Figure 1.1 shows details of the reserves and production of rare-earth elements in seven countries.
Use the data in figure 1b to calculate the missing values

Answers

153828 a year. Whenever you look at the data it shows how to get what you need to get. The data has 34 and then younmultiply by 66

Define The Meaning Of Organelle "_________ __________."
First To Answer Correctly, Gets Brainliest...

Answers

Answer:

structures that preform many jobs in cells :)

Answer:

any of a number of organized or specialized structures within a living cell.2): a specialized cellular part (such as a mitochondrion, chloroplast, or nucleus) that has a specific function and is considered analogous to an organ.3)In cell biology, an organelle is a part of a cell that does a specific job. ... Organelles typically have their own plasma membrane round them. Most of the cell's organelles are in the cytoplasm. The name organelle comes from the idea that these structures are to cells what an organ is to the body.

Explanation:

mykaren clark

7)
.......... and....
Are weak forces of attraction.

Answers

Answer:

inter molecular forces and van der wall forces are weak forces of attraction.

Explanation:

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What are the differences between an onion and a whitefish cell

Answers

During mitosis, the animal cell will have visible centrioles, where the plant cell will not. In thin section slides, you will also see that the onion cells are all dividing along the same axis, while in the whitefish embryos the plane of division appears to be random.

Onion are something that you can eat and grow on trees while whitefish cells are a part of whitefish.

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Discuss 2 other ways that scientists believe
kingdoms should be divided.

Answers

Answer:

Plants and animals? ...The question says two OTHER ways, and I don't know what ways have already been listed.

Explanation:

The two main kingdoms in the animal kingdom are plants and animals.

Scientists also list four other kingdoms including bacteria, archaebacteria, fungi, and protozoa.

Hope this helps answer the question. Comment if you need further help!

what gives animal cells their shape and structure?

Answers

Answer: Animal cell's shape and structure are determined by the cytoskeleton.

What is the cytoskeleton?

The cytoskeleton is present in all animal cells, prokaryotic (bacterial) cells contain a very rudimentary version of it, while plant cells do not have one at all. It consists of several types of large molecules that provide physical support to the cell as well as internal transport along its length for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. The three main components are microtubules, intermediate filaments and microfilaments which give rise to different structures within the cell. Microtubules are long cylindrical tubes made up of two protein subunits (alpha and beta tubulin) that form a hollow tube. These are the main components of the cytoskeleton, they provide support to the cell while also having transport capacity for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. Microtubules are dynamic structures which means their state is constantly changing i.e., growing, shrinking or moving around depending on requirements of the cell.

. A kidney cell is an example of which type of cell?
a. somatic cell
b. germ cell
c. sex cell
d. haploid cell

Answers

Answer:

A. Somatic cell

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Explanation:

Which structure gives you voluntary control over urination?

Answers

Answer:

d. External urethral sphincter

Explanation: is correct. post protected

what insects don't have piercing and sucking mouth parts?
.​

Answers

Answer:

lice

Explanation:

they bite and chew on their host skin

Insect mouthparts come in different forms. The two most common forms are the chewing and piercing-sucking types (moth and butterflies have a different, unique form of mouthparts). To determine what type of mouth an insect has, get a good hand lens (10 to 15x) or a small microscope and a bright light.

they overcame by the blood of the lamb and the word of their testimony

Answers

Answer:

Revelation 12:11

What is the main purpose for plants to conduct photosynthesis?

Answers

Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.

A DNA microarray contains immobilized DNA that corresponds to different genes. The microarray is hybridized with fluorescently labeled DNA probes reverse transcribed from the control and experimental mRNA samples. The control probe is labeled with a red fluorochrome, while the experimental probe is labeled with a green fluorochrome. What will be the color of the spot representing a gene with moderately upregulated expression in the experimental sample relative to the control one

Answers

The color of the spot of a gene with moderately upregulated expression will be lime-green. A DNA microarray is a technique used to determine the expression level of many genes simultaneously.

A DNA microarray is a laboratory technique used to identify the genes that are being expressed in a cell.

A DNA microarray contains many tiny spots of specifically labeled cDNA samples referred to as probes, which can be hybridized by base complementarity to transcribed (mRNA) gene sequences.

In the DNA microarray, the probes can be fluorescently marked gene sequences.

After hybridization, the DNA microarray is then scanned in order to determine the level of gene expression of each mRNA that hybridizes with their corresponding probes on the slide.

In this case, green spots evidence genes that are being strongly expressed in the sample.

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who has a German shepherd? I want a dog and need some information form a dog owner.Plz help​

Answers

Answer:

That is the type of dog that police use to find drugs, look for people, etc.

Explanation:

Which is the odd
one? Explain.

A. RR
B. Rr
C. Aa
D. aa

Answers

Answer:

d aa its not capitalized like the other ones

Explanation:

Which part of the plant cell does photosynthesis occur? Please help

Answers

Answer:

Photosynthesis occurs in the chloroplast of the plant cell.

Explanation:

Photosynthesis (Where does the electron that is excited by light is taken). What is the source of the electron, where does it end up?

Answers

Answer:

The source of the light electron is the sun and it is taken in by the chlorophyll contained in the chloroplasts.

Explanation:

Question 3 of 10
What is immigration?
O A. When animals die in an ecosystem
O B. When animals are born in an ecosystem
O C. When animals move into an ecosystem
O D. When animals leave an ecosystem
SUBM

Answers

Answer:

the answer to your question is is c.

In angiosperm double fertilization, one sperm nucleus fertilizes the ______ to form the diploid ______, and a second sperm nucleus fuses with the two nuclei in the central cell of the embryo sac.

Answers

Answer:

one sperm fertilizes the egg cell, forming a diploid zygote

Explanation:

Hope it helped

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In angiosperm double fertilization, one sperm nucleus fertilizes the egg to form the diploid zygote, and a second sperm nucleus fuses with the two nuclei in the central cell of the embryo sac.

The egg is the female gamete in an angiosperm. It is a haploid cell that contains one set of chromosomes. The zygote is the fertilized egg. It is a diploid cell that contains two sets of chromosomes. The zygote will eventually develop into an embryo. The central cell is a cell in the embryo sac that contains two haploid nuclei.

Double fertilization is a unique feature of angiosperms. It is a type of fertilization in which two sperm nuclei fertilize two different cells in the embryo sac. The first sperm nucleus fertilizes the egg to form the zygote. The second sperm nucleus fuses with the two nuclei in the central cell to form a triploid cell. This triploid cell will eventually develop into the endosperm, which is a food reserve for the developing embryo.

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in response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releases:

Answers

It release carbon dioxide

what percentage of extracellular fluid is accounted for by interstitial fluid and plasma?

Answers

Answer:

80%

Explanation:

As a part of her homework, June make a flowchart about the steps involved in hearing the sound energy produced by wind chimes.

A flowchart with four steps. The first step is the rods vibrate back and forth. The second step is wind chime rods hit each other. The third step is sound waves are created. The fourth step is the sound travels into your ears.

Which statement best explains the error in June's flowchart?

The wind chime rods hit each other before they begin to vibrate.
Sound waves are created before the wind chime rods hit each other.
The sound of the wind chimes travels to your ear before the rods vibrate.
The spin of the rods causes sound energy, not its vibrations.

Answers

Answer:

A is the final answer........

different types of cells in your body look and function differently. the basis for these differences is:

Answers

Different types of cells look and function differently, the basis for these differences is DIFFERENT PATTERNS of gene expression. This process (differential gene expression) leads to cell specialization.

Gene expression refers to the process by which the genetic information flows from a DNA sequence (i.e., a gene) to an mRNA molecule and finally to a protein.

In somatic (body) cells, the differential patterns of gene expression lead to the generation of different proteins and ultimately to different types of cells (cell phenotypes).

In consequence, cells are specialized to perform specific functions because different genes are being expressed.

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What are valence electrons?

Answers

Answer: : a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom.

Explanation:

High-energy electrons from NADH and FADH2, are passed into and along the____ The energy from the electrons moving down the chain is used to move H+ ions across the_____ H+ ions build up in the_____ space, making it_____ charged and making the matrix negatively charged. in the inner membrane. H+ ions move through channels of______ The ATP synthase uses the energy from the moving ions to combine ADP and phosphate, forming high-energy______​

Answers

Answers:

High-energy electrons from NADH and FADH2, are passed into and along the   electron transport chain   .

The energy from the electrons moving down the chain is used to move H+ ions across the   inner membrane   .

H+ ions build up in the    intermembrane     space, making it    positively     charged and making the matrix negatively charged.

In the inner membrane, H+ ions move through channels of   ATP synthase   .

The ATP synthase uses the energy from the moving ions to combine ADP and phosphate, forming high-energy         ATP          .

how is cell division normally controlled or regulated

Answers

Answer:

A variety of genes are involved in the control of cell growth and division. ... Tight regulation of this process ensures that a dividing cell's DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes.

Explanation:

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You are attempting to carry out a transposon mutagenesis experiment using the pRL27 system. The Donor strain you use was giving to you by a lab mate who has been culturing it continuously for several months. When you set up your control plates, you find that the Donor strain grows poorly on Luria DAP Agar. Your transformation efficiency is very poor for this attempt at mutageneis. What likely happened to the Donor strain

Answers

The most likely happened to the donor strain is that the transposon is active in the donor resulting in the gradual accumulation of mutations. The accumulation of mutations is promoted by the insertion of the transposon.

A donor strain is a bacterial strain that contains a mobilizable fragment of DNA called plasmid.

These strains (donor strains) exploit the transference properties of a conjugative plasmid to modify a particular recipient strain.

Transposons, also known as jumping genes, are mobile genetic elements that alter the genome of an organism by jumping and thus inserting them into genetic sequences (i.e., into protein-coding sequences).

In this case, the presence of a transposon in the donor strain affected the expression of many genes required for the donor strain in order to grow into Luria DAP Agar.

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Please help me!! ASAP

Answers

Answer:

B) Mushroom --> Heterotroph

C) Algae --> Autotroph

A) Autotroph --> Producer

D) Hetrotroph --> Comsumer

Explanation:

Mushrooms are decomposers because like other fungi, they break down dead and decaying matter to make their own food

Producers, such as plants and algae, acquire nutrients from inorganic sources that are supplied primarily by decomposers whereas decomposers, mostly fungi and bacteria, acquire carbon from organic sources that are supplied primarily by producers.

Primary producer; organisms, such as plants and phytoplankton, that can produce their own food through photosynthesis or chemosynthesis; also called autotrophs.

Consumers are also referred to as heterotrophs in contrast to autotrophs, which are the producers of the food chain. Consumers therefore include animals and heterotrophic bacteria and fungi. Plants that are carnivorous and therefore consume organic matter as well are regarded as both consumers and producers.

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what describes metal for being malleable?​

Answers

Malleable metals will bend and twist into numerous shapes when affected by a hammer, whereas non-malleable metals might break apart into pieces. Examples of malleable metals are gold, iron, aluminum, copper, silver and lead. ... No metal is completely malleable, and all will break when under extreme stress

Choose the correct response to this statement: Presynaptic neurons synapse on the ________ of the postsynaptic neuron.

Answers

Answer:

Cell or body dendrites

Explanation:

The cell which connects the whole body is called neuron cell and the tissue made up from the following is known as nervous tissue.

The correct answer to the following is left.

The synapse is made of the following:-

Cell endingDendrite

The signal transfer to the whole body is in form of electrical and chemical signals.

Hence, the correct answer is left to the postsynaptic neuron.

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The connective tissue layer that surrounds an entire muscle is called ______. Multiple choice question. epimysium endomysium perimysium

Answers

Answer:

the answer is epimysium

Explanation:

The connective tissue layer that surrounds an entire muscle is called the epimysium, which is the first option as it is composed of dense, irregular connective tissue and serves to protect the muscle.

What is epimysium?

The epimysium plays a role in transmitting force from the muscle to the surrounding structures and connects to the tendons and other connective tissues that attach the muscle to bone and other structures, and the epimysium is just one of the three connective tissue layers that make up the structure of a skeletal muscle; the other two layers are the perimysium and the endomysium, and together, these three layers of connective tissue provide the necessary structural support for skeletal muscles to function properly.

Hence, the connective tissue layer that surrounds an entire muscle is called the epimysium, which is the first option.

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