in a transaction-processing system, ________ insures that transactions, once completed, cannot be undone.

A macrophage is a large phagocytic cell that engulfs foreign particles and pathogens. So Macrophage.

Hope this help! :)

Answer: B. microorganisms

Explanation: Took test and it is correct

Shift to a lower gear before you start heading downhill, as this will help slow down the car without you having to ride the brakes, says the National Park Service.

5. Downwards

6. 20 seconds

8. Health and Safety Environment

9. Fan

10. Knife

13. Paper towel

18. Apron

22. Fire extinguisher

24. Soap

25. 110-120 degrees Celsius

26. True

27.

28. Potholder

29. 5-60 degrees Celsius

30. Closed

Answer:

An amino acid is one of the building blocks of a protein. A gene's DNA sequence determines the order of amino acids that make up a protein, so changes in the DNA sequence often result in changes in the amino acid sequence as well.

Explanation:

as ss

What did Miller and urey conclude from their experiment? simple organic molecules, including amino acids ( the building blocks of proteins), could have been made from gases in the earth's primitive atmosphere. This conclusion is called the chemical origin of life

Answer:

Explanation:

The two abiotic factors that make this possible include the

following:

These refers to the non-living components of the ecosystem

and have various effects on different ecosystems being present

in the world.

Water and Temperature determine the types of crops and

animals which are found in the ecosystem. In Deserts for

example, the water is usually low with a corresponding high

temperature.

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Women tend to reach higher bac levels more quickly than men because they have lower levels of the enzyme alcohol dehydrogenase.

BAC levels refers to the blood alcohol levels.

Women tend to reach higher BAC levels than men.

The enzyme alcohol dehydrogenase is responsible for the metabolism of alcohol.

Women generally have lower levels of the enzyme in their body and thus metabolize alcohol more slowly.

Thus, women reach higher BAC levels than men.

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Answer:

D. bronze is made of metals copper and tin.

Explanation:

an alloy is a material that is a mixture of two or more metals

Answer:

Explanation:

third tank is nitrie nitrieying

Trail Clube Minas Gerais

i think the answer is this...

hope it's correct and really helps...!!!

Answer:

Magnet, water, coffee filter.

Explanation:

The magnet will pick up the iron filings, and the water will dissolve the sugar and leave the sand. Next add the sand to a coffee filter and squeeze the sugar-water liquid. You have now successfully separated each specimen.  

The spinothalamic pathway of pain information has fibers that connect directly with the thalamus.

In summary, the spinothalamic pathway carries pain signals from nociceptors, through the spinal cord, to the thalamus, allowing for the perception of pain.
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Answer: using theoretical models combined with known data

Explanation:

Answer:

HII

Explanation

I beileive its C i hope this helps

Answer:

Heat, if it is above freezing, above 32 degrees fahrenheit snow will melt

Explanation:

The different types of cortical cells that respond to specific stimuli are known as feature detectors. Feature detectors are specialized neurons located in the sensory cortices of the brain, such as the visual, auditory, and somatosensory cortex.

These neurons are specifically designed to recognize and respond to particular aspects of sensory information, including edges, lines, angles, colors, textures, and sounds. In the visual cortex, for example, feature detectors are responsible for processing visual stimuli such as orientation, spatial frequency, and direction of motion. In the auditory cortex, these neurons respond to different frequencies and patterns of sound.

Overall, feature detectors play a crucial role in our ability to perceive, interpret, and respond to the complex sensory environment that surrounds us.

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The component of a homeostatic system that compares sensory information to a target value is called an integrator. Therefore the correct option is option B.

The integrator is a control centre that receives input from sensors monitoring physiological variables such as body temperature or blood glucose levels and compares it to a set point or target value for the variable.

If the sensor input indicates that the variable is out of range, the integrator sends signals to effectors such as muscles or glands to bring the variable back into range.

In this way, the integrator contributes significantly to the maintenance of homeostasis, the stable internal environment that allows cells and organs to function efficiently. Therefore the correct option is option B.

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There will be both A and B antibodies found in the bloodstream for someone whose blood type was O positive (O+).

The ABO system states that the red blood cells' surface antigens A and B serve as the foundation for compatibility by blood group. A particular antigen causes the body to perceive it as its own when it is there, but another antigen causes the body to recognize it as alien and triggers the production of antibodies.

The presence or absence of these surface antigens A and B generates antibodies against the antigens it lacks, which can be summed up as follows:

Despite having antibodies against B, blood type A has the surface antigen A.

antibodies to A and surface antigen B are present in blood type B.

Because blood type AB contains both A and B antigens, it cannot produce antibodies.

Although blood type O lacks both antigens, it can still make antibodies to them both.

The complete question is:

Which antibodies would be found in the bloodstream for someone whose blood type was o positive (o+)?

(A). No antibodies

(B). A and B antibodies

(C). B antibodies

(D). A antibodies

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Answer:

FSH - Follicle Stimulating Hormone

Explanation:

Follicle Stimulating Hormone is another hormone that is responsible for sperm production.

Answer:

Terminal moraines are found at the terminus or the furthest (end) point reached by a glacier. Lateral moraines are found deposited along the sides of the glacier. Medial moraines are found at the junction between two glaciers.

When a stimulus reaches the membrane of a muscle cell, it triggers a series of events that leads to the generation of an action potential. This action potential then propagates along the membrane and eventually reaches the T-tubules, which are invaginations of the membrane that extend deep into the interior of the muscle cell.

The T-tubules are in close proximity to the sarcoplasmic reticulum, which is a specialized type of endoplasmic reticulum that stores and releases calcium ions. When the action potential reaches the T-tubules, it triggers the release of calcium ions from the sarcoplasmic reticulum. These calcium ions then bind to proteins in the muscle cell, causing a conformational change that ultimately leads to muscle contraction. So, in summary, the membrane stimulus is carried deep into the inside of the muscle cell through the T-tubules, which are in close proximity to the sarcoplasmic reticulum and play a crucial role in the regulation of muscle contraction.

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Answer:

b

Explanation:

b. cell would divide uncontrollably. If a cell's checkpoint were not properly functioning, it would not be able to properly control its division and replication, leading to uncontrolled cell growth and division, which is a characteristic of cancer cells.

Vibrio cholerae, the bacterium responsible for cholera, has a specific sensor that can detect changes in pH. The ability of Vibrio cholerae to sense pH is related to its ability to cause an intestinal infection.

Vibrio cholerae has the ability to survive the acidity of the stomach and colonize the small intestine. The pH of the small intestine is mildly acidic. Vibrio cholerae senses the change in pH of the small intestine and produces two proteins: ToxT and TcpP/TcpH. These proteins, in turn, activate the expression of virulence genes.

Vibrio cholerae has evolved a two-component regulatory system called ToxR/ToxS. The ToxR/ToxS system works by sensing the changes in pH between the stomach and the small intestine. When Vibrio cholera enters the small intestine, ToxR/ToxS is activated, leading to the activation of a set of genes that encode factors responsible for causing an intestinal infection.A part of the ToxR/ToxS regulatory system of Vibrio cholerae involves two other proteins, TcpP and TcpH.

These proteins help in the transmission of signals between the cell surface and the cytoplasm, allowing the bacterium to respond to the changing environment and express virulence genes.TcpP/TcpH and ToxT are transcriptional regulators that activate the virulence genes that encode the cholera toxin. The cholera toxin is responsible for the hallmark symptoms of cholera, such as severe diarrhea and vomiting.

In conclusion, Vibrio cholerae senses pH changes in the small intestine using its ToxR/ToxS two-component regulatory system, which activates the expression of virulence genes. TcpP/TcpH and ToxT proteins are transcriptional regulators that activate the expression of virulence genes encoding the cholera toxin.

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It is possible to isolate specific types of vesicles through the use of antibodies attached to bacteria carriers and low-speed centrifugation.

When working with protein antigens, the antibody molecule makes contact with the antigen over a large portion of its surface that is comparable to the surface that the antigen recognizes. Binding can be caused by electrostatic interactions, hydrogen bonds, van der Waals forces, and hydrophobic interactions this binding helps in isolating the specific type of vesicle as antigen and antibody binding is also specific.

low-speed centrifugation will also be of use as it is a method of separation in which the components of a sample are separated in a centrifuge based on their density and the centrifugal force they experience. The samples are spun at about 5000 rpm.

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