Question

9) The site of the bacterial cell where ATP is produced is the:

a)   plasma membrane

b)   cell wall

c)   flagella

d)   nuclear region

e)   cytoplasm

44) Which of the following is regulated by an operator:

a) DNA sythesis

b) protein synthesis

c) RNA synthesis

d) b and c

e) all of the above

44) Which of the following is regulated by an operator:

a) DNA sythesis

b) protein synthesis

c) RNA synthesis

d) b and c

e) all of the above

56) Single amino acids are found on:

a) DNA

b) mRNA

c) tRNA

d) rRNA

e) Proteins

77) If a solution of 1x107 bacteria/milliliter were diluted one million times and then one tenth of a milliliter of that dilution was added to a Petri dish, how many bacterial colonies would you find after incubation for one or two days:

a) 1

b) 10

c) 100

d) 1,000

e) 10,000

78) If a solution of 1x105 bacteria/milliliter were diluted ten thousand times and then one tenth of a milliliter of that dilution was added to a Petri dish, how many bacterial colonies would you find after incubation for one or two days:

a) 1

b) 10

c) 100

d) 1,000

e) 10,000

Answer 1

Hi Answer:

9. The site of the bacterial cell where ATP is produced is the:

Answer: Option E. Cytoplasm [The exact answer of this question is mitochondria where the ATPs are produced, but in option, there are no mitochondria is given so it is assumed that the mitochondria are inside the cytoplasm hence the answer may be cytoplasm]

44) Which of the following is regulated by an operator:

Answer: Option C. RNA synthesis

56) Single amino acids are found on:

Answer: Option C. tRNA

77) If a solution of 1x107 bacteria/milliliter were diluted one million times and then one-tenth of a milliliter of that dilution was added to a Petri dish, how many bacterial colonies would you find after incubation for one or two days:

Answer: Option A 1 [1X107 bacteria/ml =10000000/ml and when we diluted it one million times means (10000000) time, then after dilution, we got 1 bacteria per ml which cannot be further diluted so the answer will be 1]

78) If a solution of 1x105 bacteria/milliliter were diluted ten thousand times and then one-tenth of a milliliter of that dilution was added to a Petri dish, how many bacterial colonies would you find after incubation for one or two days:

Answer: Option A 1 [1X105 bacteria/ml =100000/ml and when we diluted it ten thousand (10000) times, then after dilution we got 10 bacteria per ml then one-tenth of a milliliter (i.e. 1000micrlitre/10= 100 microlitre) then we will get 1 bacteria per 100 microliters and the answer will be 1]