<span>An element is a pure substance that cannot be broken down into anything simpler by physical or chemical means.</span>
Answer:
The sentence "The winning goal was scored by Boone." is using passive voice.
Explanation:
- In English language there are two voice: Active voice and Passive voice.
- Passive voice is used when we want to emphasize the action (the verb) and the object of a sentence rather than subject.
- That means in passive voice the subject holds less importance as compared to action.
- In the given sentence the main theme is to make clear about the winning goal.
- For example:
- I wrote the letter.(active voice)
- The letter was written by me.(passive voice)
Answer:
B. Guilt
Explanation:
The sound of the heart beating symbolized the guilt of the narrator. He had just killed the old man and the officers were in the house searching. Although things went well, he imagined the sound of the heart of the old man beating under the floorboards and it grew louder and louder as the officers were chatting with him. The narrator eventually succumbed to the loud beat and confessed his crime because he could no longer take the guilt building up inside of him.
Answer:
NH2 group combines with COOH group to form CONH group after releasing water
Explanation:
A peptide bond is formed between two R groups of amino acids by eliminating a molecule of water. If two amino acid joins, then a dipeptide link is formed. When three amino acid joins, then a tripeptide link is formed. And in case when many amino acid joins, then a polypeptide link is formed. A protein chain usually has several amino acid residues ranging from 50 to 2000 in numbers. Since a polypeptide chain is formed after the removal of water , it is known as amino acid residues.
Generally , NH2 group combines with COOH group to form CONH group after releasing water
Answer:
Phospholipids
Explanation:
The plasma membrane has a lipid bilayer in which proteins are embedded. The chemical composition of phospholipids of the membrane greatly influences the fluidity of the membrane. The length and saturation of lipid tails affect membrane fluidity. Phospholipids with short lipid tails having less than 16 carbon atoms increase the membrane fluidity as compared to the phospholipids with long tails. Phospholipids with saturated fatty acid tails make the membrane rigid while the ones with cis unsaturated fatty acid tails increase the membrane fluidity by their less dense packing.
