<span>1.
double helix model was proposed after getting the clue from chargaff rule
purines = pyramidines
2.
A = T ( this means A pairs with T)
G = C (this means G pairs with C)
A DNA strand with the sequence A-T-T-G-C-T is T-A-A-C-G-A
3.
In all the species the nucleic acid is made of phosphate , sugar , nitrogenous base (A,T,C,G)
only the number purines and pyrimidines vary.</span>
The main difference between upper
epidermis and lower epidermis is
that upper epidermis possesses a cuticle layer whereas lower
epidermis possesses a large number
of stomata. surfaces, respectively. ... possesses a cuticle layer whereas lower epidermis possesses a large number of stomata
A polar molecule has a positive and negative end because of electronegativity.
<span>Sweep prey organisms, along with some water, through the oral groove, and into the mouth opening. </span>
The correct answer is "intake and excretion are equal." Normally, there should be equilibrium between the intake of sodium and the excreted sodium. There are regulatory mechanisms in the body that regulate the excretion of sodium in order to match it with the intake. This is to prevent hyponatremia and hypernatremia.
