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Georgia [21]
3 years ago
5

How do impulses transmit in the reflex action when a hot object is touched​

Biology
1 answer:
laila [671]3 years ago
5 0

Answer:

When a person touches a hot object and withdraws his hand from it without thinking about it, the heat stimulates temperature and danger receptors in the skin, triggering a sensory impulse that travels to the central nervous system. The sensory neuron then synapses with interneurons that connect to motor neurons.

Explanation:

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Which term for the different forms of a gene for a given trait
Paul [167]
I’m not sure what you’re asking but here is my answer. If you mean the category of the trait, the answer is GENOTYPE. If you mean a trait that you’re born with, not learned, it is an INHERITED TRAIT. hope this helps :)
8 0
4 years ago
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Which statements are true of all organisms, including the zebra, giraffe, and plants in the picture? Check all that apply. Energ
Natalija [7]

Answer:

Energy is needed to power all cell processes. Energy allows organisms to grow and reproduce.

Explanation:

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3 0
3 years ago
Which is the order of microscopes, from greatest magnification to the least?
const2013 [10]

Answer:

The highest magnification commonly used with the electron microscope is 200,000X. The 4x objective lens has the lowest power.

Explanation:

The depth of focus is greatest on the lowest power objective and the longest one is the lens with the greatest power.

6 0
3 years ago
How do viruses cause disease? Please answer with complete sentences.
Norma-Jean [14]

Answer:

Virulence, the capacity to cause disease, varies markedly among viruses. Some viruses cause lethal disease while others do not. For example, nearly all humans infected with rabies virus develop a disease of the central nervous system which ultimately leads to death. In contrast, most humans are infected with circoviruses with no apparent consequence.

Explanation: One explanation for viral virulence is that it facilitates transmission. However, a comparison of infections caused by two enteric viruses, poliovirus and norovirus, does not support this general view. Both viruses infect the gastrointestinal tract and are spread efficiently among humans by fecal contamination.

5 0
3 years ago
In 1918, the Russian Tsar Nicholas II was deposed, and he and his family were reportedly executed and buried in a shallow grave.
GaryK [48]

Answer:

By making a paternity test by Short tandem repeats, or STRs (microsatellites).

Explanation:

Short tandem repeats, or STRs, are microsatellites consisting of repeated sequences of 2 to 6 base pair length monomers  in tandem, and most of them have a high degree of polymorphism. Half of an individual microsatellites are inherited by each parent, and they can be assesed by PCR amplification and further electrophoresis.

In this case, you would try to recover a bone from the remainings of the woman, the Tsar and his wife, since the rest of the latest were in a shallow grave with many different individuals. Preferably, you should manipulate this samples in an ancient DNA facility (aDNA) with proper techniques. You clean the bone samples, drill them, and from internal bone powder make a DNA extraction. After this, you perform a series of PCR targeting a panel of STRs, and electrophoresis. If the woman claim is true, half of her microsatellites should have correspondence with the Tsar, and half with the ones of his wife.

4 0
4 years ago
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