Q: What is the source of energy for photosynthesis? Choices: - air - gravity - carbon - light A:
light

(Question)
Q: What type of analysis is performed to study gene expression patterns in cells? Choices: - dna analysis - proteins analysis - residues analysis - rna analysis A:
(Answer)
rna analysis

Ques: Q: A warm-air heating system uses what kind of energy to heat air? Choices: - atmospheric - nuclear - cosmic - thermal A:
Ans: thermal

(Q).
Q: What do you call a group of cells of the same kind that performs the same function? Choices: - nucleus - molecule - organ system - tissue A:
(A).
tissue

Ques:Q: Adding carbon to iron makes what type of metal? Choices: - ions - titanium - plastic - steel A:

Ans:steel

Q: What consists mainly of parenchymal cells with chloroplasts? Choices: - periosteum - chlorophyll - mitochondria - mesophyll A:
mesophyll