Practice Questions

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#Question id: 378

Which of the following statements about buffers is true?

#SCPH05 I Biotechnology

A buffer composed of a weak acid of pKa = 5 is stronger at pH 4 than at pH 6.
At pH values higher than the pKa, the salt concentration is higher than that of the acid.
The strongest buffers are those composed of strong acids and strong bases.
When pH = pKa, the weak acid and salt concentrations in a buffer are equal.

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TLS Online TPP Program

#Question id: 13097

#SCPH01 Biochemistry

You are a scientist who is using genomics to currently study a new bacterial species that no one has ever studied before. The following sequence is a piece of DNA within the coding region of a gene that you have recently sequenced.

If you take any bacterial gene sequence, before you begin doing any sequence analysis on it, there are six potential open reading frames. Why are there six?

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#Question id: 2327

#SCPH06 I Botany

9 + 2 arrangement refers to the:

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#Question id: 7756

#SCPH28 | Zoology

Which of the following is serves to regulate the ATG9 membrane shuttle system?

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#Question id: 1716

#I Life Science/ Life Sciences Group – I-V

Expression of a CD8 α-α homodimer is characteristic of:

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#Question id: 3052

#SCPH06 I Botany

How many average CFU will form on petriplate if 0.1ml sample plating from 104 diluted sample (original sample contain 3x10^7 bacteria per ml)