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r-ruslan [8.4K]
3 years ago
8

What structural feature do epithelia that provide for protection have in common?

Biology
1 answer:
valentinak56 [21]3 years ago
5 0

Epithelial tissue constitutes an uninterrupted and continuous layer of cells. They form the linings of organs and body cavities for the protection. Epithelial cells are polarized with an apical surface which opposes the lumen of a tube or the external environment and a basal surface that attaches to the basal lamina. The epithelial tissues are specialized mainly for four functions, one of those function is protection, for this purpose they themselves are being Supported by the Connective Tissues. Epithelial cells are continuously renewed and these cells regenerate themselves with the help of mitosis. Cell linkages are well-employed in epithelial tissues.

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What process is occurring in this picture at B?
Liula [17]

Answer:

Translation

Explanation:

Translation is the second process that occurs in protein synthesis. It is the process whereby mRNA template is used to synthesize an amino acid sequence, which eventually becomes a protein.

The process of translation occurs in the cytoplasm (specifically in the ribosome). As depicted in this image, the mRNA produced during transcription is transported out of the nucleus into the cytoplasm. A RNA molecule called tRNA reads the mRNA sequence (codon by codon) and carries corresponding amino acid into the growing amino acid sequence.

Hence, according to this question, the process occuring at B according to this image is TRANSLATION.

8 0
2 years ago
Which is the correct pair of complementary nitrogenous bases in DNA?
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3 years ago
DNA<br>"Deoxyribonucleic<br>Acid"​
Zarrin [17]

Answer:

Details about DNA are given in the explanation section. Hope it will be helpful for you.

Explanation:

DNA, or deoxyribonucleic acid, is the hereditary element in humans and almost all other organisms. Nearly every cell in a person’s body has the same type of DNA. Most DNA is found in the cell nucleus (nuclear DNA), but a small quantity of DNA can also be found in the mitochondria (mitochondrial DNA or mtDNA).

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same type in all people.

DNA bases pair up with each other, A with T and C with G, to form units that are called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule.  A base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix.

A valuable feature of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases.

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How do you test for sugar
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