Why does every one have cells

1 answer:

7 0

Everyone has cells because these are the building blocks of life. These tiny particles that clump into groups that form tissues, organs, and organ systems are what makes organisms distinct from non-living things that exist on Earth. Where there are cells, life is present, and in its absence life cannot exist as we know of today. Cells are responsible for bringing different species of organisms that are found in different ecosystems all over Earth. They are tiny but in groups they are responsible for every living organisms that have existed through time.

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Researchers noted that when a lysine residue on a histone is acetylated, its side chain becomes neutral in charge. Combined with

lesantik [10]

Answer:

The correct answer is A) Histone deacetylation generally decreases gene expression.

Explanation:

Histones are the proteins that are responsible for the condensation of chromatin, which is directly linked to the capacity that a gene has to be expressed. The more condensed a gene is, the less expressible it becomes.

In order to regulate the gene expression, histones can suffer from many modifications that can change their conformation and the expressiveness of specific genes.

Histone acetylation is linked with an increase of gene expression; while deacetylation and methylation decrease gene expression.

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3 years ago

carolus linnaeus created the linnaean system of classification using 2 latin names to designate each organism

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Answer:

Carolus Linnaeus devised the binomial nomenclature system under which the organisms were named using their Genus name and Species name. The Genus name was written first, forward by the species name. The system of binomial nomenclature allowed for assigning a scientific name to all the organisms so that the conversations between scientists could be made easier. For example, humans have the scientific name, Homo Sapiens, where Homo is the genus name and sapiens is the species name.

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2 years ago

Elevating a shock victim feet will help his or her circulation. a. True b. False

klasskru [66]

elevating a stuck with him feet with help of his all circulation is true

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3 years ago

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On which part of the body does long-term use of stimulants (e.g., nicotine, cocaine, and methamphetamine) have the most signific

Y_Kistochka [10]

Stimulants are substances that all result in the increase of levels of dopamine in the brain, which is a neurotransmitter that affects attention and pleasure. What this means is that stimulants affect our brain and the way it works by changing the ways that nerve cells communicate.

Neurons (nerve cells) are the cells that have a role in transmitting messages from the brain to other parts of our body, and vice-versa, which is important for pain response, alertness, energy etc.

With long-term use, the use of stimulants would affect the central nervous system (speeding it up), the brain, and the functions necessary to live, like respiration, heart rate, blood pressure, body temperature. Levels of neurotransmitters like dopamine, serotonin, and GABA, which are responsible for the regulation of different processes, are also impacted, which creates a chemical disbalance ultimately resulting in behavioral changes, mood swings, altered attention, movement and energy, stress etc.

So the part of the body that is affected the most with the long-term use of stimulants like cocaine, nicotine, methamphetamine is the brain of course, which is where these substances have the most impact, but the impact on the central nervous system, autonomous nervous system, and neurotransmitter levels is significant.

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3 years ago

The circulatory system supports the skeletal muscular system by:

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C) transporting glucose to the cells where it is broken down and energy is released.

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3 years ago

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