Which of the following is not a type of tissue?

Correct Answer: C

Rationale: Muscle, nervous, and epithelial are primary tissue types in the body. Embryonic tissue refers to a developmental stage, not a distinct tissue type.

Correct Answer: A

Rationale: A neutral atom has equal numbers of protons (positive) and electrons (negative) to balance charge.

Correct Answer: B

Rationale: Anabolic reactions build molecules (synthesis), requiring energy, unlike catabolic decomposition.

Correct Answer: B

Rationale: Nucleotides (DNA/RNA) have a phosphate, sugar, and base, but not an amino group (found in amino acids).

Correct Answer: A

Rationale: mRNA is transcribed from DNA in the nucleus by RNA polymerase.