BIOLOGY QUESTIONS GRADE 12 UNIT ONE(1)
Choose the correct answer.
1. The organisms received genetic material from different species is called____
A. Transgene
B. Mammals
C. Transgenic
C. Insects.
2. Which is application of biology in food processing?
A. Mycoprotein
B. Single celled protein
C. Pruteen
D. All
3. Which of the following the first vitamin produced by fermentation process by using bacteria?
A. Vitamin A
B. Vitamin C
C. Vitamin B2
D. Vitamin B12
4. Which of the following organisms used to fermented meats
A. Pediococcus cerevisiae
B. Lactobacillus plantarum
C.Lactobacillus bulgaricus
D. A an B
5. The process separate alcohol and other volatile substance from solid is ____
A. Fermentation
B. Distillation
C. Respiration
D. Photosynthesis
6. Which one is the end product of beer production?
A. Ethyl alcohol
B. CO2
C. Isoamyl alcohol
D. Acetic acid
E. All
7. Sour dough bread gets its unique tang from__
A. Lactobacillus acidophilus
B. Lactobacillus sanfrancise
C. Lactobacillus thermophilis
D. All
8. The process separate metal from ore by using microorganisms is known as
A. Bioremediation
B. Biohydrometallergy
C. Biotransformation
D. Biosensor
9. Which of the following not recently application of biosensor?
A. Detect of herbicide
B. Detect of pathogens
C. Detect of glucose
D. Detect of protein and DNA.
11. What is the function of germinated in beer production?
A. Kill wild yeasts
B. Increase the concentration of starch.
C. Remove bacteria from the beer
D. All are correct Answer.
12. Which one is incorrect statement?
A. Primary water treatment is removal of floating object.
B. Secondary water treatment is microbial oxidation or remove microbial from water
C. Secondary water treatment is further reduction of in BOD
D. None of the above.
13. What is the most profilic source of antibiotics?
A. Penicillin
B. Actinomycete
C. Viruses
D. Enzymes
14. Which of the following measure the amount of oxygen needed by microorganisms to oxidized their organic content?
A. Enzymes
B. BOD
C. NAD
D. RNA
15. Genetics engineering is being used in the production of:
A. Genetraphy
B. Pharmaceuticals
C. Transgenic plants and animals
D. All.

🔰 CHEMISTRY EUEE WITH ANSWERS 2000-2011 E.C

🔰 Biology Grade 12 Worksheet

PHYSICS QUESTIONS

🔰 Choose the correct answer!
1. Which of the following wrong statement regarding projectile motion?
A. Horizontal Velocity is constant.
B. The effect of air resistance is negligible.
C. Horizontal and vertical components of projectile motion dependant each other.
D. Free fall acceleration is constant.
2. In vertical projectile motion:
A. Acceleration is remain constant.
B. Velocity is constant.
C. Acceleration is zero.
D. All are correct.
3. Kepler's second law is state the law conservation of:
A. Energy
B. Linear momentum.
C. Angular momentum
D. Kinetic energy
4. Kepler's third also known as the laws of:____
A. Ellipse
B. Equal areas
C. Harmonies
D. Energy.
5. Which one is not correct about kepler's third law?
A. Planet closest to sun have faster speed.
B. Square orbital period directly proportional to the cube radius of orbit.
C. Describe the motion of single planet.
D. The ratio of oribital period to radius of orbit is constant.
6. The attraction force between two masses directly proportional to the product of masses and inversely proportional the square of distance b/n them. This law is__
A. Kepler's first law
B. Newton law of universal gravitation.
C. Pascal's principle
D. Omhs law.
7. The maximum height of trajectory occurs when:
A. Horizontal Velocity is constant.
B. Vertical velocity is constant
C. Vertical velocity is zero.
D. Acceleration is zero.
8. Moment inertia of object depends on:
A. The axis of rotation
B. Shape of body
C. Mass of body
D. None.
9. Which one is correct about inclined projectile motion?
A. Vertical component of Velocity is constant.
B. Acceleration in horizontal motion.
C. There is no force acting in horizontal direction.
D. Horizontal Velocity is changed with time.
10. Rotational effect of force is called____
A. Mass
B. Force
C. Torque.
D. Acceleration


ANSWER
1. C
2. A
3. C
4. C
5. C
6. B
7. C
8. D
9. C
10. C

BIOLOGY QUESTIONS FOR GRADE FROM UNIT_2
MICROORGANISMS.

1. Which of the following branch of biology study about microbes?
A. Anatomy
B. Virology
C. Microbiology
D. Zoology
2. Which of the following not characteristics of Eubacteria?
A. They have great variation in mode of nutrition.
B. the lack true chlorophyll
C. Have both DNA and RNA
D. Unicellular and eukaryotic microorganisms.
3. Which of the following unicellular eukaryotic microorganisms?
A. Bacteria
B. Virus
C. Fungi
D. Protozoa
4. All external structure of bacteria EXCEPT?
A. Flagella
B. Cell wall
C. Pill
D. Endospore
5. All groups of bacterial shapes is....
A. Bacilli, Cocci, Circle, tetrahedral
B. Cocci, Circle, Triangle,Comma
C. Comma, Bacilli, Cocci, Spirochetes
D. All are correct.
6. Which of the following rod shaped bacteria?
A. Comma
B. Cocci
C. Bacilli
D. Spirochetes
7. Bacteria can be classified Gram positive and Gram negative based on__
A. Shape
B. Structure of bacteria
C. Cell wall composition
D. Size of bacteria
8. Gram positive bacteria is differ from Gram negative bacteria.
Gram positive bacteria is____
A. Lose crystal violet stain
B. More permeable of molecules
C. has thin peptidoglycan.
D. has outer membrane.
9. Consider the following steps
1. iodine treatment
2. Decolonization
3. Fixation
4. Crystal violet
5. Counter stain safranin
Which of the following correct steps of Gram staining?
A. 3, 4,1, 5, 2
B. 3, 5, 4, 1, 2
C. 3, 4, 1, 2, 5
D. 3, 1, 4, 5, 2
10. All are characteristics of true bacteria one is not?
A. Have cell wall made from peptidoglycan.
B. Have genetic material
C. Found in everywhere.
D. They are Eukaryotic unicellular organisms.