What specific atoms make animals/humans grow ?

1 answer:

6 0

Atoms, Molecules, Cells, Tissues, Organs, Organ system are all building blocks to growing an organism. Hope this helps. :)

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What do you call the type of government that combines aspects of both unitary and confederal government?

siniylev [52]

A federal government is the type of government that combines aspects of both unitary and confederal government. The United States has a federal government.

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4 years ago

1) What gland in the endocrine system is involved in gigantism and goiter? Why? Pls. Answer. Before you answer pls separate the

Goshia [24]

The endocrine system is composed of the following:

1) hypothalamus
2) pituitary gland
3) thyroid and parathyroids
4) adrenal glands
5) pineal gland and gonads
6) pancreas

Pituitary gland is involved in gigantism. Pituitary gland produces the growth hormone. Excessive growth hormone released by the pituitary may result to gigantism.

The enlargement of the thyroid gland is called goiter. It is a symptom of hypherthyroidism, a condition wherein levels of thyroid hormones in the blood are highly excessive.

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3 years ago

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The invention of the microscope in the 1600's was one of the most important inventions in the history of science. The microscope

almond37 [142]

Answer:

The cell theory developed most quickly due to the invention of the microscope. Robert Hooke was the first scientist who saw cells in cork. After this discovery, a wide numbered of researches were made and cell theory was developed. The basic cell theory explained that how every living thing was made up of cells. After this, a lot of additions have been made in the cell theory and today the cell theory is known to have five basic postulates.

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3 years ago

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What part of the plasma membrane makes it difficult for water-soluble substances to move freely into and outof the cell?

koban [17]

Answer:

The nonpolar tails in the middle of the plasma membrane

Explanation:

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3 years ago

The data obtained from the meselson–stahl experiment after one generation of replication eliminated the dispersive model of dna

Sedaia [141]

<h2>Given statement is false</h2>

Explanation:

According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA

Meselson and Stahl did an experiment on DNA replication using E.coli bacteria

E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
They then measured the density of the DNA using density gradient centrifugation
This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
Each DNA strand act as a template for synthesis of new strand
Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment

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3 years ago

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