Q: What is the smallest unit of a living thing? Choices: - electron - proton - organ - cell A:
cell

(Question)
Q: For feeding, the head contains one pair of mandibles and two pairs of what? Choices: - tracheae - antennae - chelicerae - maxillae A:
(Answer)
maxillae

Ques: Q: What type of matter transmits light without scattering it? Choices: - opaque - smooth - reflective - transparent A:
Ans: transparent

(Q).
Q: What promotes cell division and are necessary for growing plants in tissue culture? Choices: - polyamines - auxins - mitochondria - cytokinins A:
(A).
cytokinins

Ques:Q: What is the name of the formation that regulates sleep and arousal? Choices: - gelechioidea formation - epithelial formation - sleep-arousal formation - reticular formation A:

Ans:reticular formation

Ques: Q: Down syndrome is caused by having three copies of what, a condition known as trisomy? Choices: - genome - variation - DNA - chromosome A:
Ans:
chromosome