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100問 • 1年前

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Which of the following pair of amino acids undergoes direct deamination?

Serine and Glycine

Claviceps purpurea is a fungus which infects crop plants. Arrange the process ofinfection. I. Some of the hyphal strands produce asexual spores, known as conidiospores, which become suspended in a viscous, sugary liquid, known as honeydew II. Insects are attracted to this honeydew and carry it and the spores to other host plants, where the process is repeated. III. Spores comes into contact with the ovary of a grass, frequently rye, where it germinates, forming hyphal strands that penetrate into the host tissue. IV. The hyphae eventually form a mass of tissue known as a mycelium, which supplants the ovary. V. Honeydew is secreted by the mycelium.

III-IV-I-V-II

The process of synthesis of glucose and other carbohydrate molecules from simple precursors.

Photosynthesis

Glycolysis: EMP pathway; Photosynthesis:

Calvin cycle

What is the product of light reaction?

ATP and NADPH

The site of the Calvin cycle reactions

Chloroplast

During the Krebs Cycle, which step directly produces GTP, which can be converted into ATP?

Succinyl CoA to Succinate

The following are products of Krebs cycle.

3 NADH, 1 FADH2 and 1 GTP

Which intermediate of the citric acid cycle is used for the synthesis of heme?

Succinyl-CoA

Which step in the Krebs cycle involves substrate-level phosphorylation?

Succinyl-CoA to Succinate

The conversion of isocitrate to α-ketoglutarate is possible because of what chemical reaction?

Oxidative decarboxylation

An amino acid relevant to the production of heme.

Glycine

Arrange the process of curing of Vanilla. I. Upon developing correct moisture level and aroma, the pods are laid in the open air, alternating between sun and shade, driving out moisture without overly drying the pods. II. The soaked pods are wrapped in woolen blankets in the day and packed in wool- covered boxes at night until the pods lose 70-80% of their original weight. III. The ripe vanilla pods are dipped into warm water for about 3 minutes IV. The pods are then graded and tied into bundles stored and sealed in closed boxes (e.g. tin containers) for shipment V. The fruits are collected as they ripen to a yellow color, 6 to 10 months after pollination.

V-III-II-I-IV

Complete the general enzyme reaction scheme: E + S ⇆ ES →___

E+P

This tradionally used herbal plant is used to aid cough, STOMACH ULCERS, and has been shown to exhibit ANTI-INFLAMMATORY properties.

Glycyrrhiza glabra

The Lineweaver-Burke plot below is typical for a substrate with what type of inhibitor?

Non-competitive

The source of thebaine

P. bracteatum

Which of the following is the catalytic strategy exhibited by chymotrypsin?

Promotion of a reaction that is immeasurably slow at neutral pH

Quinine is from a plant family called:

Rubiaceae

The consumption of this traditionally herbal plant would cause an additive effect when taken with OHAs.

Momordica charantia

The Cori cycle primarily involves the conversion of:

Glucose to lactate in muscle cells and lactate to glucose in the liver.

Which of the following enzymes is involved in the "committed step" of glycolysis?

Phosphofructokinase-1

At the end of glycolysis, three two-carbon fragments are produced.

Not true

Which step in the glycolysis pathway produces NADH?

Conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate

In the glycolysis pathway, which enzyme is responsible for the first ATP-generating step via substrate-level phosphorylation?

Phosphoglycerate kinase

Fats are chemically classified as:

Ester

Eicosanoids are chemically classified as:

Carboxylic acid

Cytosine and Guanine are bonded by three hydrogen bonds while Adenine and Thymine are bonded by two hydrogen bonds.

Not false

A nucleoside is composed of a nitrogen base, a sugar and a phosphate, while a nucleotide is composed of a nitrogen base and sugar.

False

The following codons halts translation except:

AUG

Glucose + Fructose + Glucose

Melezitose

The following are trisaccharides, except?

Stachyose

Test for aromatic amino acids

Xanthoproteic

Using this test, proline would manifest a yellow color.

Xanthoproteic

The following amino acids shows positive test result to lead acetate test: I. Ala III. Lys II. Met IV. Cys

II, IV

Most monosaccharides often found in nature are in what form?

Dextrorotatory

Most amino acids often found in nature are in what form?

Levorotatoy

Special secretory tissue present in Pine trees.

Schizogenous and lyzigenous passages

The volatile oils of orange are secreted from:

Schizogenous and lyzigenous passages

The structure below is classified as:

Tropane alkaloids

The structure below is classified as:

Isoquinoline alkaloids

This class of alkaloids are widely known for their ability to inhibit parasympathetic effects.

Tropane alkaloids

Odd one out:

Pilocarpine

An anti-malarial and anti-arrhythmic alkaloid.

Quinine

The following are liquid alkaloids except:

Codeine

Purine alkaloids, except:

Coca

Tropane alkaloids, except:

Codeine

Camellia sinensis belongs to which class of alkaloids?

Purine

Test for the presence of caffeine

Murexide

A development of purple color in Marquis test indicates the presence of:

Opium

Test for quinine

Thalleoquin

Turpentine oil can be isolated via:

Water distillation

Oil from Eugenia caryophyllus can be isolated via

Both Water and Steam Distillation

Site of translation.

Ribosome

Site of transcription.

Nucleus

Primarily the site of post-translational modification.

Golgi bodies

A codon is a three-nucleotide sequence on a tRNA molecule that is complementary to an anticodon on an mRNA molecule.

False

Identify the type of mutation ATCGTTAGCCGA ATCTTAGCCGAA

Frameshift; Deletion

59. Identify the type of mutation TCTCAAAAATTTACG TCTCAAATATTTACG

Point; Transversional

Identify the type of mutation UCUCAAAAAUUUUCA UCUCAAAAAUUUUGA

Nonsense

Which of the following is derived during transcription to convert this nucleutide chain into protein? ATTCGTCTTCACAT

UAAGCAGAAGUGUA

RNA nitrogen bases, except:

Thymine

The following are true, except:

Nucleic acids are made of 6-carbon sugar, a nitrogen base, and a phosphate group

The simplest glycolipid

Cerebroside

This type of glycolipid contains 2 or more monosaccharides, a sphingosine, and a fatty acid.

Globosides

The following are essential fatty acids:

Both Linoleic acid and α -Linolenic acid

This element serves as a co-factor for carbonic anhydrase

Zinc

Which is correcly paired?

Frankincense: Oleogumresin

Gums are physiologic products. Resins are pathological products.

Both statements are not correct

The following are components of CBT, except:

Peru balsam

Odd one out

Paclitaxel

Which of the following is incorrectly matched:

Theobromine: 3,7-diethylxanthine

Among the 4 ETC complexes, which is the one being attacked by the cyanide ion?

Complex IV

The major branch point intermediate of Shikimic acid pathway.

Chorismate

Statins work by inhibiting which enzyme in the mevalonic acid pathway?

HMG coA reductase

This condition is characterized by the accumulation of urate in joints and kidney along with compulsive destructive behaviour, mental deficiency and spasticity. This condition is due to the condition of hyphoxanthine-gunanine phosphoribosyltransferase.

Lesch-Nyhan syndrome

Adenosine Deaminase Deficiency

Severe Combined Immunodeficiency

Which of the following does not stimulate lipolysis.

Insulin

A condition characterized by a deficiency of muscle phosphofructokinase and a modest accumulation of glycogen.

GSD VII

Major type of membrane lipid

Phospholipid

An achiral amino acid which is also an inhibitory neurotransmitter.

Glycine

The following are essential amino acids except:

The synthesis of aromatic compounds in plants is done via shikimic acid pathway. These includes aromatic amino acids such as:

AOTA

A deficiency of alpha-ketoacid dehydrogenase causes a disease called Maple syrup urine odor. Which of the following amino acids’ toxic metabolites are excreted via the urine in this condition?

AOTA

An enzyme synthesised by chief cells in stomach of mammals and a key component of a complex set of enzymes used in cheese production.

Rennin

The inactive form of a proteolytic enzyme found in the intestine.

Trypsinogen

The inactive form of a proteolytic enzyme found in the stomach.

Pepsinogen

88. A homoglycan used as a diagnostic aid for renal dysfunction.

Inulin

Scurvy is a disease common to sailors who had no access to fresh food supplies. This disease is caused by lack of:

Vitamin C

Vitamin used as antidote of choice for acute cyanide poisoning.

Vitamin B12

A vitamin administered to neonates to prevent bleeding

Phylloquinone

The following are marine gums except:

Xanthan

Which of the following statements are mismatched? I. Camptotheca acuminata: Topoisomerase I inhibition II. Taxus brevifolia: Topoisomerase II inhibition III. Catharanthus roseus: Microtubule polymerization inhibition IV. Podophyllum peltatum: Microtubule depolymerization inhibition

II and IV

In an ATP molecule, the bond responsible for storing energy is called:

Phospho-anhydride bonds

Ester of a long-chain fatty acid and a long- chain organic compound with hydroxyl groups

Wax

The simplest method on preserving crude drugs.

Exposure to 65⁰C

In determining the presence of cardiac glycosides in a sample, which test is most appropriate?

Keller-Killiani

Which of the following sugars will test negative in Fehling’s test?

Sucrose

Mucic acid test is a test for:

Galactose

100

The use of this test is significant in diagnosing Diabetes mellitus.

Benedict’s test

Module 2 Part 1

ユーザ名非公開 · 100問 · 1年前

Module 2 Part 1