Cell Biology and DNA

Cell Biology & DNA :

1. which one is not true for cloning
a. asexual reproduction
b. reproduction into new individuals
c. mitosis
d. exact copy of parents

2. all living things are composed of highly structural living substance known as
a. cell
b. organelles

c. protoplasm
d. tissues

3. manipualtion of gene in DNA Ais called
a. genetic engeenering
b. gene theraphy
c. trasgenic organisms
d. genetic recombination

4. study of structure and function of various parts of body are related to
a. histology
b. microbiology
c. physiolgy
d. anatomy

5. the percentage of potassium in humans is about
a. 0.25

d. 0.35

6. ll of the following are the six commonest bio wlwmwnts in human body , except that of
a. oxygen
b. carbon
c. phosphorus
d. sulphur

7. the microscopic study of blood is related with
a, histology
b. microbiology
c. morphology
d. anatomy

8. all of the following are the minor bio elements except
a. Ca
b. P
c. Mg
d. Fe

9. what is percentage of nitroen as bio element in the body of human being
a. 10%
b. 0.15%

10. the word carbohydrate literally means
a. saccharides
b. sugar
c. hydrate carbons
d. none

11. a structur normally composed of several tissue types that form a fundamental unit is called
a. organ system
b. cell

12. control of environmental pest by using livivg organisms is known as
a. biological control
b. eutrophication
c. pasteurization
d. bio remedation

13. eugenic aims are achieved by
a. genetic engeenering
b. cloning
c. transgenic organisms
d, tissue culturing

14. use of heat at temperature high enough to kill the non- spore forming bacteria is called
a. sterillization
b. antisepsis
c. pasteurization
d. canning

15. vaccianation was first developed by
a. louis pasteur
b. edwerd jennar
c. robert kouchs
d, all'

16. the primary products that responsible for photosynthesis are th
a. carbohydrates
b. green plants
c. producers
d. both b&c

17. tetrose sugar is rare in nature and occurs in some
a. bacteria
b. desert plants
c. omnivores
d. eukaryotes

18. which one is true for conjugated molecules that are compnents of biological membranes
a. glycolipids
b. glycoproteins
c. both a &b
d. nuclleohistones

19. which one of the following is relate to keto ketonic form of tryose sugar
a. dihydroxyaccetone
b. glyceraldehyde
c. glycerate
d, pyruvate

20. for synthesis of 5g glucose , the amount of solar energy used is the
a. 717.6 kcal
b. 574kcal/kg
d. none

21. all of thr followings are related to polysaccharides except  that of
a. glycogen
b. dextrin
c. collagen
d. chitin

22. which one of the following oragani compound has more fuctional diversity than others
a. carbohydrates
b. histones
c. lipids
d. proteins

23. which one of the following monosaccharidessugars are the intermediate in respiration and photosyntheisi
a. triose
b pentose
c. tetrose
d. hexose

24. starch, cellulose and glycogen yield glucose on
a. respiration
b. photosynthesis
c. hydrolysis
d. digestion

25. chemically acylglycerols are the esters of
a. fatty acids
b. alcohol
c. both a &b
d. terpenoids

26. the optium ph value for catalse enzyme is
a. 5.50
b. 7.60
c. 4.50
d. 9.70

27. all of the followings are related to terpenoids except
a. caretonoids
b. steroids
c. rubber &terpenes
d. agar&pectin

28. an activated enzyme consisting of polypeptide chain and a co-factor is known as
a. activator
b. holo enzyme
c. prosthetic group
d. apo enzyme

29. which one of the following conjugate protein play an important role in gene expression
a. nucleohistones
b. glycoproteins
c. glycolipids
d. lipproteins

30. every enzyme by its specifity recognizes and reacts with a special chemical substance called
a. co- factors
b .metal activators
c. substrate
d. co enzyme

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