The bond between the bases and the sugars in DNA referred as:

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#Question id: 4152

#SCPH01 Biochemistry

The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?

1.  A chaperone, SecA, binds to the polypeptide.

2.  A chaperone, SecB, binds to the polypeptide.

3.  ATP is hydrolyzed by Sec A.

4.  SecA pushes 20 amino acids of the polypeptide into the translocation complex.

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#Question id: 27874

#Research Methodology

What is a sampling unit?

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#Question id: 1279

#SCPH05 I Biotechnology

A tight junction is made up of which of the following proteins?

a. tricellulin                                                     b. occludin

c. claudin                                                         d. connexins

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#Question id: 353

#SCPH05 I Biotechnology

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

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#Question id: 19701

#SCPH06 I Botany

Choose correct statement about Electrocardiogram Augmented Limb Leads.

a. In this type of limb lead system, two of the limbs are connected through the positive terminal of the electrocardiograph, and the third limb is connected to the negative terminal. 

b. In this type of limb lead system, two of the limbs are connected through the negative terminal of the electrocardiograph, and the third limb is connected to the positive terminal. 

c. When the positive terminal is on the right arm, the lead is known as the aVR lead; when on the left arm, it is known as the aVL lead; and when on the left leg, it is known as the aVF lead.

d. When the negative terminal is on the right arm, the lead is known as the aVR lead; when on the left arm, it is known as the aVL lead; and when on the left leg, it is known as the aVF lead.

Which of the following combination is correct?