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Biology 1525 MCQs [All-Courses]

Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

Which of the following statement is incorrect about RNA_________________?

A The pentose sugar in it is Ribose.

B It contains Adenine Guanine Thymine and Cytosine

C It is present in the nucleoli

D It may be folded back on itself to give double helical characteristics.

Review Detailed Answer

Correct Answer: It contains Adenine Guanine Thymine and Cytosine

In an aqueous environment the most stable tertiary conformation is that in which _________ amino acids are buried inside the conformation?

A Hydrophobic

B Hydrophilic

C Basic

D None of these

Review Detailed Answer

Correct Answer: Hydrophobic

Hemoglobin molecule exhibits which structural organization of proteins___________?

A Primary structure

B Secondary structure

C Tertiary structure

D Quaternary structure

Review Detailed Answer

Correct Answer: Quaternary structure

Locomotory structures are not found in which of the following group?

A Amoebas

B Zooflagellates

C Ciliates

D Apicomplexans

Review Detailed Answer

Correct Answer: Apicomplexans

Which structure of protein gives information aboutnumber and sequence of amino acids in it_______________?

A Primary structure

B Secondary structure

C Tertiary structure

D Quaternary structure

Review Detailed Answer

Correct Answer: Primary structure

Total number of amino acids in a hemoglobin molecule are__________?

A 554

B 564

C 574

D 584

Review Detailed Answer

Correct Answer: 574

A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called__________?

A Phosphodiester linkage

B Glycosidic bond

C Peptide bond

D Hydrogen bond

Review Detailed Answer

Correct Answer: Peptide bond

The windpipe or trachea lies?

A Dorsal to oesophagus

B Ventral to oesophagus

C Lateral to oesophagus

D None of these

Review Detailed Answer

Correct Answer: None of these

An insulin molecule consists of _________ polypeptide chains?

A 1

B 2

C 3

D 4

Review Detailed Answer

Correct Answer: 2

The major constituent of blood plasma is___________?

A Protein

B NaCl

C Water

D Cholesterol

Review Detailed Answer

Correct Answer: Water

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Biology 1525 MCQs [All-Courses]

All Topics 1525

All Topics 1525

Which of the following statement is incorrect about RNA_________________?

In an aqueous environment the most stable tertiary conformation is that in which _________ amino acids are buried inside the conformation?

Hemoglobin molecule exhibits which structural organization of proteins___________?

Locomotory structures are not found in which of the following group?

Which structure of protein gives information aboutnumber and sequence of amino acids in it_______________?

Total number of amino acids in a hemoglobin molecule are__________?

A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called__________?

The windpipe or trachea lies?

An insulin molecule consists of _________ polypeptide chains?

The major constituent of blood plasma is___________?