DNA is involved only in transcription, and RNA is involved in both transcription and translation. DNA is a double helix, and RNA is a single strand DNA does not have uracil as a nitrogen base, but RNA does have uracil as a nitrogen base.
The allosteric inhibitor changed the conformation of the enzyme to a state where it could not bind more oxygen in its active site. An allosteric inhibitor does not bind the active site but binds another site on the enzyme called an allosteric site. These allosteric regulation are significant in feedback and feedforward regulation of enzyme activity.
Ligament is a fibrous connective tissue which joins the bone to bone. It helps to keep the skeletal system in structure and provide stability to the skeletal system.
The answer would be C, the kidneys remove UREA from blood to produce urine, which is stored in the bladder temporarily. Hope this helps!
I think it's important to concentrate yourself to complete what you are doing, but if you have also new ideas try to develop them into something useful