Biomolecules and Enzymes

Plasma proteins are proteins found in the blood plasma, the clear, protein-rich fluid, which is left behind when platelets, red blood cells and white blood cells are removed from the blood. These proteins play a number of important roles in the human body, and levels of plasma proteins are sometimes evaluated in a laboratory analysis to gather information about a patient's general health and specific health issues, which a patient may be experiencing. Plasma proteins make up around 7% of the total blood volume with levels which can fluctuate at times.

An epitope, also known as antigenic determinant, is the part of an antigen that is recognised by the immune system, specifically by antibodies, B cells, or T cells. The part of an antibody that recognises the epitope is called a paratope.

Lectins are carbohydrate-binding protein macromolecules that are highly specific for sugar moieties.

This option is correct because cystein is an amino acid.which contains the thiol group along the side chain. This group participates in the enzymatic reaction and behaves as a nucleophile.

Ferrochelatase is the final enzyme in heme synthesis, inserting ferrous iron into protoporphyrin IX. Heavy metals like lead inhibit ferrochelatase activity, which is why lead poisoning causes anemia. It doesn't chelate iron therapeutically, degrade hemoglobin, or bind to sulfide ions.

These are the intermediates in the urea cycle.

ADEPT stands for antibody-directed enzyme prodrug therapy entangling the association of an enzyme to an antibody. It is the use of monoclonal antibodies (or mAb) to specifically bind to target cells or proteins.

The plasma membrane allows only lipid-soluble substances to pass through it. Water-soluble substances such as glucose, amino acids, ions and water can pass through the plasma membrane with the help of the various proteins. Amino acid permeases are integral membrane proteins involved in the transport of amino acids into the cell.

This is the correct answer.

Carnosine is a dipeptide of the amino acids beta-alanine and histidine.

This is the correct answer.

This is the correct option as actin is a protein that is not included in the matrix of bone.

ExPASy (Expert Protein Analysis System) is a proteomics server specifically designed for protein sequence and structure analysis. It provides tools for protein identification, characterization, and classification. While some tools may handle nucleic acids, ExPASy's primary focus is proteins, not chemical analysis.

BIOGRID is a freely accessible database of protein and genetic interactions. It curates interaction data from various organisms. GOD refers to Gene Ontology terms (not an interaction database), and Motif refers to sequence patterns, not interactions.

Patsearch (Pattern Search) is a bioinformatics tool designed to find structural and sequence motifs in protein sequences. The other distractor options (Prosear, Prof) appear to be garbled or incomplete versions of other tool names.