Which of these processes does not occur in animal cells?
a. respiration
b. photosynthesis
c. chemical reactions
d. making proteins

The correct answer is option B, that is, photosynthesis.  

The procedure by which some kinds of bacteria, plants, and certain protozoans utilize the energy from the sunlight to generate glucose from water and carbon dioxide is known as photosynthesis. It does not take place in animals.  

This glucose produced is then transformed into pyruvate that discharges ATP by the process of cellular respiration, in the process oxygen is also produced.  

pregnancy happens more and more

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