Answer:
Structurally, proteins are different from carbohydrates because all proteins contain nitrogen (option C).
Explanation:
The basis of the chemical composition of proteins is carbon, hydrogen, oxygen and nitrogen, so all proteins have nitrogen in their structure. Some proteins also possess phosphorus and sulfur atoms, among others.
Proteins are biomolecules formed by the union of multiple amino acids through carboxyl-amino bonds, called petidic bonds. Their content of nitrogen and other atoms in their structure is what makes them different from carbohydrates.
The other options are not possible because:
- <em>Only some proteins contain </em><u><em>iron</em></u><em> in their composition.</em>
- <u><em>Potassium and helium</em></u><em> are not part of the protein structure.
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Answer
Hydrogen ion movement form ATP in ATP synthase .
Explanation:
ATP synthase is present in mitochondrial membrane when pass hydrogen ion in to lumen of mitochondria and due to proton gradient generate ATP molecule with pass of hydrogen ion into lumen ATP is formed from ADP and inorganic phosphorous molecule . Passing of three hydrogen io generate one ATP molecule .So movement of hydrogen ion is directly related to ATP synthases.
Characteristics of Lancelets:
Small
Elongated
Marine invertebrate
Lacks a jaw
No sense organs
Has a notochord
Example: Lamprey
Characteristics of Tunicates:
Marine invertebrate
Has an outer coat that is rubbery or hard
Has two siphons
Examples: sea squirts, salps
Answer:
Your answer would be ( A star has 2 star systems )
Hope this helps have an amazing day........
I’m pretty Sure it’s A sorry if i’m wrong
