2. Which of the following correctly describe the colligative properties of aqueous solutions? I. Vapour pressure increases when nonvolatile solute molecules are added. II. Boiling point increases when nonvolatile solute molecules are added. III. Freezing point increases when nonvolatile solute molecules are added. IV. Osmotic pressure increases when nonvolatile solute molecules are added. А. П only В. П and III С. I and IV D. All of the above
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![2. Which of the following correctly describe the colligative properties of aqueous solutions?
Vapour pressure increases when nonvolatile solute molecules are added.
II. Boiling point increases when nonvolatile solute molecules are added.
III. Freezing point increases when nonvolatile solute molecules are added.
IV. Osmotic pressure increases when nonvolatile solute molecules are added.
I.
А. I only
В. П and II
С. П and IV
D. All of the above
3. Estimate the Vmax and Km of the enzyme-catalyzed reaction for which the following data
were obtained:
Vo (µM / min)
[S] (M)
2.5 x 10-6
28
4.0 x 106
1 x 10-5
2 x 105
4 x 10-5
1 x 104
2 x 10-3
1 x 10²
40
70
95
112
128
139
140
A. Vmax = 140 and Km =1 x 10-5
B. Vmax = 70 and Km = 1 x 10$
C. Vmax = 140 and Km =1 x 10²
D. Vmax = 70 and Km = 1 x 10-2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5f868185-5584-4956-afb7-fb8a0cca7081%2Fe2c85b8d-c31a-4f25-b2e6-a345f4798917%2Fyfm03vq_processed.png&w=3840&q=75)
![4. The graph below shows Vo vs Vo / [S] for an enzyme-catalyzed reaction. The blue curve
was obtained in the absence of inhibitor.
Which of the other curves shows the enzyme activity when a competitive inhibitor is
added?
Slope K
V.
A. Curve A
B. Curve B
C. Curve C
D. None of the above
5. The favorable growing conditions of a microbe is at 37°C and pH 6. Which of the
following classifications are correct?
I Thermophile
II. Mesophile
III. Acidophile
IV. Neutrophile
A. I and II
B. I and IV
C. Il and III
D. Il and IV
6. Which of the following statement is the most appropriate for the description of a sample
which has been filtered with 0.2 um syringe filter
A. The sample is sterile
B. All bacteria in the sample are removed
C. Most of the cells or substances larger than 0.2 um are removed
D. The sample was cleaned](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5f868185-5584-4956-afb7-fb8a0cca7081%2Fe2c85b8d-c31a-4f25-b2e6-a345f4798917%2Fojpj4u_processed.png&w=3840&q=75)
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