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Home ❭ Questions ❭ One Liners ❭ The scientist who observed that there exists a relationship between the contents of purines and pyrimidines in DNA structure
The scientist who observed that there exists a relationship between the contents of purines and pyrimidines in DNA structure
Biochemistry Pharmacist Competitive Exams
Q. The scientist who observed that there exists a relationship between the contents of purines and pyrimidines in DNA structure
Ans → Erwin Chargaff
Explanation →
This question is taken from the test/quiz post: Biochemistry Important One Liners Questions On Nucleic Acids and Nucleotides - attemp/practice
More oneliners in - Biochemistry Important One Liners Questions On Nucleic Acids and Nucleotides
Q. The scientist who observed that there exists a relationship between the contents of purines and pyrimidines in DNA structure
Ans → Erwin Chargaff
Explanation →
Q. The base pair G-C is more stable and stronger than A-T due to
Ans → 3 Hydrogen bonds
Explanation →
Q. Under physiological condition, the DNA structure is predominantly in the form
Ans → β-Form
Explanation →
Q. The number of base pairs present in each turn (pitch) of B-form of DNA helix
Ans → 10
Explanation →
Q. The backbone of nucleic acid structure is constructed by
Ans → Phosphodiester bridges
Explanation →
Q. The nucleotide that serves as an intermediate for biosynthetic reaction
Ans → UDP-glucose , CDP- acylglycerol , S Adenosylmethionine
Explanation →
More one-liners in - Biochemistry
Q. Leukocytes found in the peripheral blood that are characterized by numerous granules
Ans → granulocytes
Explanation →
Q. The energy levels of electrons in an atom which may be described in terms of the four quantum numbers.
Ans → atomic orbital
Explanation →
Q. Larger nucleus in ciliate protists that have two nuclei; polyploid with a reduced genome of metabolic genes and derived from the micronucleus
Ans → macronucleus
Explanation →
Q. A ring structure formed from complement proteins C6 through C9 that penetrates the membranes of a targeted cell, causing cell lysis and death
Ans → membrane attack complex (MAC)
Explanation →
Q. Name a membrane-bound organelle (not part of the endomembrane system) that produces hydrogen peroxide to break down various types of molecules;
Ans → peroxisome
Explanation →
Q. The relation between the change of free energy (G), enthalpy (H) and entropy (S) is expressed by the equation
Ans → ΔG = ΔH – TΔS (T = Absolute temperature)
Explanation →
Q. The extrinsic and intrinsic pathways result in the formation of a common activated factor
Ans → Staurt factor
Explanation →
Q. A a substance which cannot be further subdivided by chemical methods.
Ans → element
Explanation →
Q. The coenzyme directly concerned with the synthesis of biogenic amines
Ans → Pyridoxal phosphate
Explanation →
Q. The element involved in the protection of cells against the damage of H2O2 and other free radicals
Ans → Selenium
Explanation →
Q. It occurs when a hydrogen atom has an electromagnetic attractive interaction with an electronegative atom.
Ans → Hydrogen Bonding
Explanation →
Q. The lipoproteins synthesized in the intestinal mucosal cells from the absorbed lipids are
Ans → Chylomicrons
Explanation →
Q. Used as processing aid in tablet and capsule manufacturing, to facilitate the movement of the formulation into the dye and punch and to reduce the energy of compression.
Ans → lubricant
Explanation →
Q. Name the class of antifungal drugs that inhibit ergosterol biosynthesis
Ans → imidazoles
Explanation →
Q. An inverse agonist is a ligand that by binding to a receptor reduces the fraction of receptors in an active conformation, thereby reducing basal activity.
Ans → Inverse Agonist
Explanation →
Q. Solutions (aqueous or oily), emulsions, or suspensions for rectal administration of medicaments for cleansing, diagnostic, or therapeutic purposes.
Ans → enemas
Explanation →
Q. Type of mutation involving the addition of one or more bases into a DNA sequence
Ans → insertion
Explanation →
Q. Usually small, flat, and soft tablets, which are designed to be placed under the tongue to allow direct absorption of the active ingredient through the mucosa for systemic effect.
Ans → sublingual tablets
Explanation →
Q. The isomerism associated with unsaturated fatty acids
Ans → Geometric isomerism (cis-trans isomerism)
Explanation →
Q. A staining technique in which labeled antibodies are bound to specific cells in a tissue section
Ans → immunohistochemistry (IHC)
Explanation →
Q. A compound possessing hydrophobic and hydrophilic groups in its structure is known as
Ans → Ampipathic
Explanation →
Q. The amino acids required for the synthesis of purines and pyrimidines are
Ans → Glutamine and aspartate
Explanation →