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11. Where is the ATP synthase located in the mitochondria:
a)- ribosomes
b)- interspace
c)- inner membrane
d)- matrix
12. The correct sequence of the cell cycle is:
a)- G1 – M – S – G2
c)- M – G2 – S – G1
b)- G1 – S – G2 - M
d)- G2 – S – G1 - M
13. The part of the brain controlling the anterior pituitary gland is the:
a)- medulla
b)- thalamus
c)- cerebral cortex
d)- hypothalamus
14. Pyruvate is converted anaerobicall to:
a)- methyl alcohol and CO2
c)- lactic acid and ethanol
b)- CO2 only
d)- water and oxygen
15. In the human body, any cell other than a sperm and ovum is called a:
a)- somatic cell
b)- sex cell
c)- haploid cell
d)- gamete
16. The protein is synthesized by:
a)- DNA molecule
c)- ribosomes
b)- nucleus
d)- nucleolus
17. An organism having a pair of identical alleles for a character is called:
a)- heterozygous
b)- homozygous
c)- phenotypic
d)- genotypic
18. Which enzyme catalyses elongation of DNA strand in 5’ end to 3’ end direction:
a)- RNA primase
b)- DNA ligase
c)- DNA polymerase
d)- helicase
19. Which of the following is a gonotropic hormone:
a)- FSH
b)- ADH
c)- cortisol
d)- TSH
20. Which hormone will stimulate the production of milk in female:
a)- oxytocin
b)- prolactin
c)- ADH
d)- growth hormone
21. Most animal fats are:
a)- saturated
c)- glycogen
b)- unsaturated
d)- non of the above
22. Bacteria can replicate by:
a)- mitosis
c)- cell cycle
b)- meiosis
d)- binary vision
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23. The microfilaments are made of protein called:
a)- tubulin
b)- myosin
c)- actin
d)- dynein
24. The protein which is impeded within the plasma membrane is described as:
a)- peripheral protein
b)- integral protein
c)- both a and b
d)- non of the above
25. Pinocytosis is a type of:
a)- endocytosis
c)- active transport
26. HIV virus contains a reverse enzyme called:
a)- translase
c)- polymerase
b)- exocytosis
d)- facilitated diffusion
b)- transcriptase
d)- nucleotase
27. Which type of lipids is the most important in biological membranes:
a)- wax
b)- fats
c)- phospholipid
d)- oils
28. Which of the following hormone sequences is correct:
a)- GnRH  FSH  ovaries
b)- LH  FSH  adrenal gland
c)- ACTH  FSH  thyroxin
d)- TSH  LH  testis.
29. Diabetes mellitus is due to the lower activity of the:
a)- islets of langerhans
b)- thyroid gland
c)- parathyroid gland
d)- adrenal gland
30. The two divisions of the autonomic nervous system are the:
a)- voluntary and involuntary
b)- central and peripheral
c)- sympathetic and parasympathetic
d)- sensory and somatic
31. The main neurotransmitter of the parasympathetic system is:
a)- acetylcholine
b)- epinephrine
c)- snorepinephrine
d)- cholinesterase
32. Neurons which carry nerve impulses to the CNS are:
a)- afferent
b)- interneurons
c)- motor neurons
d)- efferent neurons
33. Fertilization of human eggs usually takes place in the:
a)- Ovary
b)- uterus
c)- vagina
d)- oviduct
34. Which of the following cells produce testosterone:
a)- sperm cell
b)- sertoli cells
c)- interstitial cells
d)- spermatogonia
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35. The diploid chromosome number for human is (46). How many chromosomes are there in a
secondary spermatocyte:
a)- 23
b)- 46
c)- 69
d)- 92
36. The Gray matter is:
a)- made up of all axon
c)- receptor of brain
b)- mostly cell bodies
d)- reflex action
37. G. A. B. A. is concentrated at:
a)- pons
c)- medulla oblongata
b)- cerebrum
d)- Tthalamus.
38. The main material responsible for bone elongation is:
a)- PTH
b)- TSH
c)- GH
d)- HCG
39. The ovulation is controlled by:
a)- LH
c)- estrogen
b)- FSH
d)- progesterone
40. During cell division, crossing over results in the formation of
a)- homologous chromosomes
b)- recombinant chromosomes
c)- sex chromosomes
d)- non of them
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Q2: Write whether each of the following statement is True (
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1. Protein synthesis takes three stages; initiation, elongation and termination.
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2. The primary spermatocytes is a result of division of spermatogonum.
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3. The net energy from one molecule of glucose is 38 ATP …………
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4. Lysogenic viruses cycle ends in death of the host……….
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5. Chemoosmosis is the passive transport of water….
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6. Mesosome are structure important for all animal cell division ….....
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7. The primase is an enzyme important for the OKAZAKI fragment…
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8. The short cylinder with q+2 pattern of microtubules give rise to the basal bodies of cilia
and flagella …………..
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9. The myosin protein of intermediate is involved in cell movement …
10. In order to enters the Krebs cycle, glucose must be converted into lactic acid ..
11. Na gate is opened to show the deplorization status …
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12. Micrortubules are made of actin subunits.
13. A test cross refers to a cross between two heterozygous parents …………
14. Replication of a DNA begins at special sites called primase.
15. Male sex hormone testosterone is secreted under the effect of F.S.H .........
16. The mammary gland is the target organ for prolactin hormone .........
17. Impulses can be transmitted in either direction across the synapse ...................
18. Ganglion is the junction between 2 neuron .......................................
19. AIDS is a genetic disease which can be transmitted to the next generation
20. Glycolysis is occurred in the cytoplasm and need the O2 .
21. The genotype of an organism refers to its appearance …….
22. Glycolysis produce energy by oxidizing glucose molecule into 3 pyruvate molecules….
23. Heterotrophs use both light and chemicals as energy sources…………………………….
24. DNA is a single stranded nucleic acid, while RNA is double stranded …………………
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25. Each triplets of nucleotide bases on the mRNA are called codon, which is responsible
for a specific amino acid during protein synthesis…………………….……………
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26. Meiotic division occurs mainly in sex cells to form gametes (sperms and ova)………….
27. Starch is a storage polysaccharide stored in animal liver …………………………..........
28. The viral capsid composed of protein units called capsomeres .......................................
29. During cell respiration, Pre-Krebs cycle converts pyruvate molecules into acetyle-CoA...
30. The changes in temperature will affect the activity of enzyme.
31. Lipid hormone have cell cell-membrane-receptor in the target cell.
32. Acromegally is a result of high secretion of thyroxin.
33. ADH secreted by the anterior pituitary is involved in water balance.
34. Krebs cycle produce 2 molecule of ATP per one molecule of pyrovic acid
35. HCG secreted by the trophoplast is a sign of menstruation .
36. The P site of ribosome is a location of amino acid accumulation.
37. The G2 stage of the cell cycle is stage of all cell organells replication.
38. The G.A. B. A. neurotransmitter is located at the medulla oblongata.
39. Adison disease is the result of high concentration of calcitonin,
40. In a cross section of penis, the tissue will show the corpora cavenosa only.
41. Fats give less ATP than glucose.
42. Cytrochomes on the cristae are the location of oxidation and reduction process
43. Insulin would be secreted by the  cells of Langerhans.
44. The lysosomal enzymes work best in an acidic environment.
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