Questions & Answers

Serum differs from blood in
(a)Lacking clotting factors
(b)Lacking antibodies
(c)Lacking globulins
(d)Lacking albumins

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Hint It incorporates all proteins not utilized in blood clotting; all electrolytes, antibodies, antigens, hormones; and any exogenous substances (e.g., drugs or microorganisms). It does not contain white blood cells (leukocytes), red blood cells (erythrocytes), platelets, or clotting factors.

Complete answer
The serum is the light yellow fluid left after blood coagulating and doesn't contain any platelets. Globulins and albumins, the plasma proteins, and antibodies are available in serum. They lack clotting factors.
The serum is the liquid and solute segment of blood that doesn't assume a function in coagulating. It may be defined as plasma without fibrinogens.

Additional information
The serum of convalescent patients successfully recovering (or already recovered) from a communicable disease are often used as a biopharmaceutical within the treatment of people thereupon disease, because the antibodies produced by the fruitful recuperation are intense warriors of the microbe. Such convalescent serum (antiserum) may be a sort of immunotherapy.
The serum is additionally utilized in protein electrophoresis, thanks to the shortage of fibrinogen which may cause false results.
For the growth media that is used in the eukaryotic cell culture, Fetal bovine serum (FBS) is added as it is rich in growth factors A mix of FBS and the cytokine leukemia inhibitory factor was initially used to keep up early-stage undeveloped cells, yet worries about group to-cluster varieties in FBS have prompted the improvement of serum substitutes.

So the correct answer is ‘Lacking clotting factors’.

Note: Blood serum and plasma are probably the biggest wellsprings of biomarkers, regardless of whether for diagnostics or therapeutics. Its immense powerful reach, further convoluted by the presence of lipids, salts, and post-translational alterations, too numerous instruments of debasement, presents difficulties in insightful reproducibility, affectability, goal, and likely viability.