What are the four types of nitrogen bases of dna nucleotides?

a)     Adenine (A)

b)Guanine (G)  

c)Cytosine (C)  

d)Thymine (T)  

Explanation:

There are four types of nitrogenous bases in DNA

a)Adenine (A)

b)Guanine (G)  

c)Cytosine (C)  

d)Thymine (T)  

Both the Adenine and Thymine are complimentary to each other while Guanine and Cytosine are complimentary to each other. The nucleotide are named based on the nitrogenous base in it .  

RNA has a different nitrogenous base instead of thymine , known as uracil.  

1 and 6 for apex

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d