Q: Receptors for what chemical messengers recognize molecules with specific shapes and side groups, and respond only to those that are recognized? Choices: - acids - chromosomes - enzymes - hormones A:
hormones

(Question)
Q: What type of electrons are electrons that are not confined to the bond between two atoms? Choices: - virtualized - detached - internalized - delocalized A:
(Answer)
delocalized

Ques: Q: What is the spread of cancer cells beyond their original site called? Choices: - scattering - mutations - apoptosis - metastasis A:
Ans: metastasis

(Q).
Q: Which cycle is named after the scientist melvin calvin? Choices: - krebs cycle - melvin cycle - melcal cycle - calvin cycle A:
(A).
calvin cycle

Ques:Q: What role do proteins play in a biological reaction? Choices: - amino acid chains - antioxidants - reverse hormones - act as catalysts A:

Ans:act as catalysts

Ques:Q: When do alkane reactions usually occur? Choices: - underwater - at high altitudes - in cold climates - under extreme conditions A:

Ans:
under extreme conditions