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CC LEC EXAM

Authored by JHUDIEL TACASTACAS

Science

University

Used 4+ times

CC LEC EXAM
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76 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

OSHA uses this law to inspect and accredit lab facilities

Occupational Safety and Health Administration

Occupational Safety and Health Act

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

paper chromatography is an example of

liquid-liquid chromatography

solid-liquid chromatograpy

gas-liquid chromatography

gas-solid chromatography

3.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Media Image

You are given a series of 5 tubes, each of which contains 5ml of diluent. 2ml of serum is added to the first and second tubes, and a serial dilution using 1 ml is carried out in the remaining tubes. What is the serum concentration in tube 5?

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

type of buffer used when the

- pH level is around 8.0 pH

- for nucleic acid separation

- has high resolution

- has high buffering capacity

Tris-borate-EDTA buffer (TBE)

Tris-glycine buffer

Tris-acetate-EDTA buffer (TAE)

Barbitone buffer

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Make 500 grams of 40% w/w aqueous solution of sodium chloride

6.

FILL IN THE BLANK QUESTION

1 min • 1 pt

a molecule that contains both acidic and basic groups

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an experiment, Seth used an ion-selective electrode with no dilution of sample. What type of ISE electrode is used?

Direct ISE

Indirect ISE

Both Direct and Indirect ISE

None of the choices

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