Food poisoning occurs when food that has been improperly stored or cooked is ingested by a human. Which of the following disease-causing organisms can be transferred to humans when they are eaten?
A.
viruses
B.
parasites
C.
bacteria
D.
all of these

Answer:

- Two related plants may produce similar substances that could be used for medicines. - A related plant may provide a cheaper source of a substance. - If a plant becomes extinct, a related plant may provide an alternative source of a substance.  

(No Explanation)

The question is not clear, so the clear question is as follows:

A cell has a 5 percent salt concentration. It is placed into a solution with a 0.5 percent salt concentration. What will happen to the cell?

Answer:

Cell will get swelled and burst

Explanation:

When a cell is placed in a solution with less concentration, then the solvent particles move from lower concentration to higher concentration through a semipermeable membrane and the process s called osmosis.

In this case also, the cell has higher concentration and the solution has less, so water will move into the animal cell, causing it to swell and burst after some time.

Hence, the correct asnwer is "Cell will get swelled and burst".

Answer:

Water will move into the cell, causing it to swell.

Explanation:

The cell has higher concentration of solute and a lower concentration of water than the solution it is placed in. This means that water will move into the cell, causing it to swell and ultimately burst.

Right from khan :))

When the valve was opened, the pressure in the left intrapleural cavity increased. The increase in pressure is due to the entry of air into the cavity through the open valve.

The pressure in the left intrapleural cavity changes when the valve is opened as air enters the cavity through the valve, causing an increase in pressure. This happens because the intrapleural cavity is a negative pressure environment, with the pressure inside it lower than the pressure outside of it.

When air enters the cavity, it disrupts this negative pressure and causes the pressure inside the cavity to rise. This can have consequences for lung function and overall respiratory health.

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Answer:

A G C A C G T G C C T

Explanation:

The answer is True. The area between the two cells is known as the synaptic cleft.

There is a distinct separation between the presynaptic and the postsynaptic membrane.

The difference tells us about there must be some intermediary signaling mechanism between the presynaptic neuron and the postsynaptic neuron.

The presynaptic neuron is the cell that sends information whereas the postsynaptic neuron is the cell that receives information

The synaptic cleft is the small space separating the presynaptic membrane and postsynaptic membrane and the synaptic vesicle is an organelle that houses chemical neurotransmitters.

Neurotransmitters are chemicals that are released by neurons and bind to receptor sites, which are synthesized in the neuron, and packaged into vesicles.

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To identify high affinity tumor/self-antigen-specific T cell receptors (TCRs) from T cells with low TCR surface expression in healthy individuals by Isolation of T cells, Stimulation of T cells, Sorting of low TCR surface expression T cells, TCR sequencing and Generation of TCR-expressing cell lines.

1. Isolation of T cells: T cells can be isolated from peripheral blood samples of healthy individuals. This can be done using techniques like density gradient centrifugation or magnetic bead separation.

2. Stimulation of T cells: The isolated T cells can then be stimulated in vitro using tumor/self-antigens or peptide libraries derived from these antigens. This stimulation helps in expanding the population of T cells specific to these antigens.

3. Sorting of low TCR surface expression T cells: Flow cytometry can be used to sort T cells based on their TCR surface expression. Cells with low TCR surface expression can be isolated and collected for further analysis.

4. TCR sequencing: The TCR genes of the sorted T cells can be sequenced to obtain their TCR sequences. This can be done using techniques like next-generation sequencing (NGS) or Sanger sequencing.

5. Generation of TCR-expressing cell lines: The TCR sequences can be cloned into expression vectors and transfected into TCR-deficient cell lines, such as Jurkat cells. This generates TCR-expressing cell lines that can be used for functional assays.

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Phagocytosis (literally, "cell eating") is a type of endocytosis that involves the transport of large particles into the cell, such as cells or cellular debris.

Phagocytosis is an important process for nutrition in unicellular organisms, and it is found in specialized cells called phagocytes in multicellular organisms. Phagocytosis is the recognition and ingestion of particles larger than 0.5 m into a plasma membrane-derived vesicle known as a phagosome.

Phagocytosis is the cellular process by which particles larger than 0.5 m in diameter, such as microorganisms, foreign substances, and apoptotic cells, are ingested and eliminated. Phagocytosis is found in many different types of cells and is thus an important process for tissue homeostasis.

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The chemical messenger being described here is a hormone. Hormones are slow-acting but long-lasting chemical messengers that are carried throughout the body by the bloodstream.

They are produced by endocrine glands and act on target cells or organs to regulate various physiological processes in the body such as growth, metabolism, reproduction, and response to stress.

Hormones are produced in response to specific stimuli such as changes in blood levels of certain substances or nerve impulses.

Once released into the bloodstream, they are transported to specific target cells or organs where they bind to specific receptors and trigger a response. The response may involve changes in gene expression, alterations in enzyme activity, or changes in membrane potential.

Overall, hormones play a crucial role in maintaining homeostasis in the body and are involved in a wide range of physiological processes. Some examples of hormones include insulin, growth hormone, thyroid hormone, and cortisol.

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The investigation that will provide evidence to answer Heather's question about how a warmer atmosphere affects the temperature of the ocean, is by meausuring the change in the temperature of water while in containers with air of different temperatures. This will allow her to see the influence of air temperature on water temperature.

The correct option is A.

Answer:

Hello its C plasma

Explanation:

Blood has two parts 1.blood cells 2.plasma

Plasma makes up 55 percent of blood and blood cells form 45 percent of blood.

The cell part contains three type of cells.

Plasma contains:

Hope you understand.

Neptune. This planet has a great dark spot in it's northern hemisphere.

The planet that had a dark gray spot is most likely Neptune, as in 1989, NASA's Voyager 2 spacecraft flew by Neptune and captured images of a large dark spot on its surface.

The dark spot was about the size of the Earth and was located in the planet's southern hemisphere. The spot was named the Great Dark Spot and was later found to be a large storm system, similar to Jupiter's Great Red Spot. The Great Dark Spot on Neptune was a significant discovery, as it was the first time that such a storm system had been observed on a planet other than Jupiter. The storm had wind speeds of up to 1,500 miles per hour, which is much faster than any storm on Earth. It was also observed to be changing shape and size over time, indicating that it was a dynamic and active system.

Hence, the planet that had a dark gray spot is most likely Neptune.

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B. Herbaceous or woody stems is the characteristic that would present in citrus trees.

Dicot plants have embryo which has two cotyledons. These plants have leaves with reticulate venation. The root of the dicots has tap root system and have woody stem.

SO we can conclude that herbaceous or woody stems is the characteristic that would present in citrus trees.

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Answer:

Herbaceous or woody stems is the characteristic that would present in citrus trees.

Explanation:

edge

The expected ratio of the three major classes for conservative replication after three generations would be: 0% pure 15N, 50% 15N-14N hybrids, and 50% pure 14N.

If 15N-labeled E. coli were grown for three generations in a 14N medium, we can determine the expected ratio of the three major classes of DNA based on whether DNA replication is semi-conservative or conservative.

a) Semi-conservative replication:
In semi-conservative replication, each new DNA molecule consists of one parental strand (labeled with 15N) and one newly synthesized strand (labeled with 14N).

For the first generation:
- All the DNA molecules will be 15N-14N hybrids since the newly synthesized strands are labeled with 14N.

For the second generation:
- Half of the DNA molecules will still be 15N-14N hybrids, as the original parental strands (labeled with 15N) were conserved.
- The other half of the DNA molecules will be pure 14N strands, as the newly synthesized strands from the first generation became unlabeled.

For the third generation:
- One-fourth (25%) of the DNA molecules will be pure 15N strands, as the original parental strands (labeled with 15N) were conserved.
- Half (50%) of the DNA molecules will be 15N-14N hybrids, as one parental strand from the second generation is still labeled with 15N.
- One-fourth (25%) of the DNA molecules will be pure 14N strands, as the newly synthesized strands from the second generation became unlabeled.

b) Conservative replication:
In conservative replication, the parental DNA strands remain together, and a completely new double-stranded DNA molecule is formed.

For the first generation:
- All the DNA molecules will be 15N-14N hybrids since the newly synthesized strands are labeled with 14N.

For the second generation:
- Half of the DNA molecules will be 15N-14N hybrids, as the original parental strands (labeled with 15N) were conserved.
- The other half of the DNA molecules will be pure 14N strands, as the newly synthesized strands from the first generation became unlabeled.

For the third generation:
- All the DNA molecules will be pure 14N strands, as the original parental strands (labeled with 15N) remained together, and no new strands were synthesized.

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Pi or inorganic phosphate is released from ATP and therefore provides energy.

It is the energy-carrying molecule found in the cells of all the living things. It is a nucleotide, which comprises three main parts, that is,

The tail of phosphate is the actual source of energy, which is tapped by the cell. The accessible energy is present within the bonds between the phosphates and is discharged when the bonds are dissociated. It takes place via the supplementation of a water molecule, the process known as hydrolysis.

Generally, only the outer phosphate is withdrawn from the ATP to produce energy, when this takes place ATP get transformed to ADP or adenosine diphosphate.

Thus, the correct answer is option B, that is, Pi.

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Answer:

There is a constant exchange of carbon from the abiotic and biotic environmental elements to the atmosphere. The breakdown of glucose is known as cellular respiration, and creates the byproduct carbon dioxide. This exhaled carbon dioxide is the method by which humans return carbon to the carbon cycle.

Explanation:

Answer:

plants move towards to the source of light

Answer:

\(\left[\begin{array}{ccc}&R&r\\R&RR&Rr\\r&Rr&rr\end{array}\right]\)

Answer and explanation:

The mitochondria are the organelle responsible for respiration, which leads to the production of ATP - the most important molecule in energy transfer.

For respiration to happen, there are several processes involving chemical reactions that take place in the mitochondria. These mechanisms are: oxidative decarboxylation, Krebs cycle, and oxidative phosphorylation. Glycolysis is also important for these processes to occur, but this particular case happens outside of the mitochondria.

Pyruvate is an important precursor of the Krebs cycle, also called 'the citric acid cycle'. The researcher observes the functioning of the mitochondria in presence of pyruvate, but then adds an inhibitor of isocitrate dehydrogenase. This inhibitor cancels out the action of the isocitrate dehydrogenase, which is a key enzyme in the Krebs cycle. By inhibiting this enzyme, the cycle cannot continue, and respiration stops.

Answer:did you ever get he answer I need help

Explanation:

Answer: Silent Mutation

Explanation: Silent mutation: Some mutations that change DNA bases do not have any effect on the sequence of amino acids in the protein. These mutations are called silent mutations and they do not affect the structure or function of the protein because there is no effect on the amino acid sequence.

Answer:

Point Mutations

Explanation:

It is the least harmful mutation

Answer:

There are two primary scales used to measure earthquakes: the Richter scale and the Mercalli scale. The Richter scale is most common in the United States, while worldwide, scientists rely on the Mercalli scale. The moment magnitude scale is another earthquake measurement scale used by some seismologists.

Answer:

It helps you uncover the challenges you're facing and generate better solutions to solve those problems. We're all spending too much time and energy solving the first iteration of a challenge with the first idea we have. That's both limiting and counterproductive.

Explanation:

Answer:

Explanation:

Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein. It acts as both an on/off switch to control when proteins are made and also a volume control that increases or decreases the amount of proteins made.

Through meiosis, four haploid cells are produced. These cells are the gametes. Gametes merge during fertilization, and produce a new diploid cells. Option 3. Meiosis in the ovary (3) and fertilization in Fallopian tubes (4).

Meiosis followed by cytokinesis are a cell division process that produces gametes from germ cells.

Through Meiosis, a diploid cell (2n) produces four haploid daughter cells (n). After DNA replication there are two meiotic phases.

In sexual reproduction, two gametes merge and produce a diploid zygote which will then suffer successive mitosis events and produce a new individual.

In a female mammal, meiosis occurs in the ovary and fertilization occurs in fallopian tubes.

Image,

1) Vagina

2) Cervix

3) Ovary

4) Fallopian tube

5) Uterus

The correct option is 3. Meiosis in the ovary (3) and fertilization in Fallopian tubes (4).

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Answer:

A. nucleic acids

Answer:

A. nucleic acids

Explanation:

The (B) stratum basale of the epidermis is the layer that houses mitotically active stem cells.

Stem cells, which give rise to every other type of cells with distinct functions, are the basic units of the body. When stem cells are dividing effectively to produce additional cells in the body or a lab, daughter cells are produced. Stem cells, also known as the body's "master cells," are the cells that give rise to the blood, brain, bones, and all of the organs in the body. They may be utilized to treat a wide range of illnesses and ailments because they have the capacity to repair, regenerate, replace, and restore cells.

The two primary sources of stem cells are adult body tissues and developing embryos. In order to produce stem cells from other types of cells, researchers also are experimenting on genetic "reprogramming" techniques. In the bone marrow reside the majority of the stem cells (the spongy center of certain bones). At this stage, they divide to create new blood cells. Blood cells leave your bone marrow once they have finished developing and enter the bloodstream. Moreover, a tiny number of immature stem cells are injected into the bloodstream.

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Answer:

orion, big and little dipper and cancer.

Explanation:

Those are my thoughts I hope this helped.