Some elements exist naturally as molecules. For example, hydrogen and oxygen exist as two-atom molecules.

TLS Online TPP Program

#Id: 10352

#XL - Q Biochemistry

B-cell activation

TLS Online TPP Program

#Id: 7738

#XL - Q Biochemistry

Which of the following are true for an element?

(i) Atomic number = number of protons + number of electrons

(ii) Mass number = number of protons + number of neutrons

(iii) Atomic number = number of protons = number of neutrons

(iv) Atomic number = number of protons = number of electrons

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) (ii) and (iv)

TLS Online TPP Program

#Id: 10094

#XL - T Zoology

Activation of integrins involves:

Conformational changes near the propeller and 

 βA domains

Separation of the transmembrane and cytoplasmic domains

TLS Online TPP Program

#Id: 9102

#XL - T Zoology

NO diffuses locally through tissues and activates an

intracellular NO receptor with guanylyl cyclase

activity in nearby smooth muscle cells

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#Id: 8862

#XL - R Botany

In vertebrates, stabilization of cohesins requires the cohesin-associated factor sororin.