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Dafna11 [192]
3 years ago
9

______ is important in the synthesis of thyroid hormone. lack of it will lead to a goiter.

Biology
1 answer:
dezoksy [38]3 years ago
5 0
The natural element _IODINE_ is important in the synthesis of thyroid hormone; lack of it will lead to a goiter.
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Lysozyme is an enzyme that breaks down bacterial cell walls and is found in your tears, mucus, and saliva. A mutation occurs in
LenKa [72]

Answer:

Lysozyme is an enzyme that breaks down bacterial cell walls and is found in your tears, mucus, and saliva. A mutation occurs in the gene for lysozyme that results in a lysine (a positively charged amino acid) being substituted for an arginine (also a positively charged amino acid). Do you think that the mutant lysozyme will function similarly to the normal lysozyme?

No, because all changes in protein primary sequence result in functional differences

Explanation:

Protein sequence are known to be complimentary to each other, slight changes or sudden changes would affect the function as well as those work in antagonizing way with one another.

3 0
3 years ago
The __________ includes all of the water that is underground, in surface bodies, and in the atmosphere.
stellarik [79]
The answer is hydrospherd
6 0
3 years ago
Describe HOW fossils can provide evidence of how environmental conditions and life have changed during Earth's history.
Lana71 [14]

Answer:

By studying fossils, scientists learn how much organisms have changed as life developed on Earth. There are space in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind.

Hope it helps.

7 0
3 years ago
Match the call structure with the best description. Each cell structure matches with exactly one description.
Makovka662 [10]

Answer:

Please find the cell structure with their best descriptions below

Explanation:

1. Capsule: Capsules are one of the Glycocalyx that firmly attaches to the cell surface and helps the cell avoid phagocytosis.

2. Slime layer: Slime layer is the other Glycocalyx that is loosely attached to the cell surface and helps the cell prevent dessication.

3. Flagella: The flagella is a long whip-like cell structure found in bacteria and some protists and principally used for moving.

4. Conjugation pilus: Conjugation pilus is a cell structure in bacteria that is used to transfer DNA to another bacteria cell.

5. Fimbriae: Fimbriae is a short, bristle-like protein that project from cell surface and help cells attach to surfaces of other cells.

6. Cell wall: Cell wall is a cellular structure found in plant cell and bacteria cells, whose function is to protect cells from harsh conditions and helps maintain cell shape.

7. Cell membrane: The cell membrane controls passage of substances into and out of the cell.

8. Cytoplasm: The cytoplasm is a gelatinous material found inside the cell.

9. Inclusions: Inclusions are structures in cells that formed from the deposits of nutrients.

10. Endospores: Endospores are structures that protect bacterial genome in a dormant state under adverse environmental condition.

11. Ribosomes: Ribosomes are organelles in a cell that makes polypeptide (protein).

12. Mycolic acid: Mycolic acid is a waxy molecule (long fatty acid chain) that is found in some gram positive bacteria and associated with their cell wall.

13. Nucleoid: A nucleoid is a region in prokaryotic cell where chromosomal DNA and DNA-associated proteins are concentrated.

14. Pili: Pili is similar to the Fimbriae but longer and contain less numerous protein appendages than fimbriae used in attachment.

7 0
4 years ago
80 POINTS
slava [35]
Archimedes has gone down in history as the guy who ran naked through the streets of Syracuse shouting "Eureka!" — or "I have it!" in Greek. The story behind that event was that Archimedes was charged with proving that a new crown made for Hieron, the king of Syracuse, was not pure gold as the goldsmith had claimed.hopes this helps
4 0
3 years ago
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