BIO202 Grand Quiz Mega File by Lion Zoologist

BIO202 - Biochemistry-I GRANDQUIZ MEGA FILE · LION GROUP OF ZOOLOGISTS FOR · 2ND · ADMIN ASMAT KHAN NIAZI

Q1. the most frequently used systematic nomenclature name the fatty acid after the hydrocarbon with -oic being substituted for the final .........

1. e
2. d

c)a d)b

Q2. the amide group of ------ serves as site of attachment for oligosaccharide chain in glycoprotein

1. serine
2. threonine

c)asparagine d) all of these

Q3. the ion found in the haem group is what--------

1. Mg+
2. O-2
3. Fe+2
4. Fe+3

Q4. hydrogenation of fatty acid leads to the hardening of natural oil and formation of margarine because

1. trans double bond are converted to cis double bonds
2. cis double bond is converted to trans double bonds
3. double bond are converted to single bond
4. single bond is converted to double bond

Correct answer: trans double bond are converted to cis double bonds

Q5. fatty acid are classified on the basis of hydrocarbon chain length include

1. medium chain fatty acid (6 -12c)
2. short chain fatty acid (2-4c)
3. long chain fatty acid (14-18
4. all of the above

Q6. which of the following form of lipid are also referred as neutral lipid?

1. triacylglycerol
2. phospholipid
3. steroid
4. wax

Q7. the following salt is water insoluble

1. K
2. Na
3. Mg
4. Zn

Q8. which statement about amino acid at physiological ph. is true?

1. the carboxyl group is dissociated and amino group is protonated
2. only the carboxyl group is dissociated
3. amino group is protonated
4. there is no charge on either of the amino group or carboxyl group.

Q9. the sigmoidal binding curve of hemoglobin for oxygen is possible due to ......... structure of hemoglobin.

1. Multisubunit
2. Single subunit

Q10. the formation of furfural product and their condensation with organic phenol to give characteristic colored compound forms the bases of biochemical tests used for the detection of carbohydrate an example of such test is

1. Molisch ‘s test
2. Benedict’s test

c)Ninhydrin test d) Grease spot test

Q11. One degradation product of hemoglobin is the brown bile pigment bilirubin .this step occur in

1. bile
2. liver
3. kidney
4. heart

Q12. the quaternary structure of hemoglobin is best described as

1. dimer of two myoglobin dimers
2. tetramer of identical subunit
3. tetramer of four different subunit
4. tetramer of two different subunit

Q13. degree of saturation ( Y)(%) of oxygen binding sites on all myoglobin or hemoglobin molecule can be any value between……..

1. 0 and 1

b)-1 and +1 c) 0 and 100