BIOLOGY TIMES — January 2018

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Introduction Enzymes are commonly proteinaceous substances which are capable of catalysing chemical reactions of biological ori ...

(ii) In the second step, once the E–S complex forms, the enzyme is able to catalyse the formation of product (P), which is then ...

(b) The catalytic reaction occurs while the two are bonded together in the enzyme-substrate complex. ii. Induced-Fit Theory: It ...

Properties of Enzyme: Enzymes are generally globular proteins. Being proteinaceous, the enzymes are giant molecules with a mole ...

Classification of Enzymes: The modem system of enzyme classification was introduced by International Union of Biochemistry (IUB) ...

(i) the first number shows to which of the six main divisions (classes) the enzyme belongs, (ii) the second figure indicates the ...

modulators that alter the conformation of the active site so as to make it effective or ineffective. The areas are called allost ...

Fig: Multienzyme system Applications of Enzymes Enzymes are central to every biochemical process. Acting in organised sequences ...

Enzymes are (a) Carbohydrates (b) RNA (c) Proteins (d) Fats The term Enzymes are coined by (a) Pasteur (b) Buchner (c) Urey Mil ...

An enzyme is classified as EC 2.7.1.1. The digit 2 denotes (a) Class number (b) Hydroxyl group as an acceptor (c) Phosphate gro ...

Match the following columns and select the correct choice Column I Column II A. Humans 1. Panthera tigris B. Mango 2. Homo sapi ...

(b) Nephridia in earthworm, Malpighian tubules in cockroach and urinary tubules in rat (c) Antennae of cockroach, tympanum of fr ...

Which is correct to say about the hormone action in humans? (a) Glucagon is secreted by the β-cells of islets of Langerhans and ...

Receptor sites for neurotransmitters are present in (a) Pre-synaptic membrane (b) Tips of axons (c) Post-synaptic membrane (d) ...

A cross that involves two different genera is called (a) Monohybrid cross (b) Intergeneric cross (c) Interspecific cross (d) ...

Which of the statement regarding Genetic Engineering Approval Committee (GEAE) is correct? (a) Genetic modification of orga ...

(b) Hydrilla and Potamogeton occur in stage A, Phragmites and Typha occur in stage C. (c) Acer and Quercus occur in stage F and ...