Identify the amino acid with hydroxymethyl as its R group:

1. Glycine

2. Alanine

3. Serine

4. Phenylalanine

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All the following are nucleosides except:

1. Adenosine

2. Cytosine

3. Guanosine

4. Uridine

 

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Identify the incorrect statement regarding the structure of proteins:

1. They are heteropolymers containing strings of amino acids.

2. The first amino acid in the primary structure is the N-terminus amino acid

3. Only left helices are observed in proteins

4. Tertiary structure is absolutely essential for many biologic functions of the proteins

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At each step of its ascent, the DNA strand turns:

1. 3.4°

2. 34°

4. 3.6°

4. 36°

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The substrate has to go through a much higher energy state or transition state in case of:

1. Exothermic reactions only

2. Endothermic reactions only

3. Both exothermic and endothermic reactions

4. Neither exothermic nor endothermic reactions

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Name the enzymes that catalyze removal of groups from substrates by mechanism other than hydrolysis leaving double bonds:

1. Transferases

2. Lyases

3. Isomerases

4. Ligases

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When the co-factor is removed from the enzyme, the catalytic activity:

1. is lost.

2. is reduced.

3. is increased.

4. is unaffected.

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What is the term used for a protein molecule that assists in the proper folding of other proteins?

1. ubiquitin

2. chaperonin

3. vimentins

4. cyclins

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Locomotion is a very important feature in animals. Considering the frequent need for locomotion in animals, an animal would obtain the greatest benefit from storing its energy as:

1. proteins

2. minerals

3. carbohydrates

4. fats

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Populations subsisting primarily on corn would likely to suffer from:

1. PEM

2. Pellagra

3. Bleeding disorders

4. Beri beri

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