Q: What is formed when an enzyme binds its substrate? Choices: - vessel - substrate complex - nucleus - substrate complex - lock and key model - enzyme - substrate complex A:
enzyme - substrate complex

(Question)
Q: What is the term for organisms that can maintain a stable body temperature even in the face of large fluctuations in the environmental temperature? Choices: - ectotherms - pachyderm - homeotherm - endotherms A:
(Answer)
endotherms

Ques: Q: How are the major families of organic compounds characterized? Choices: - Their optic groups - their visual groups - their thermal groups - their functional groups A:
Ans: their functional groups

(Q).
Q: Short chains of two amino acids (dipeptides) or three amino acids (tripeptides) are also transported actively. however, after they enter the absorptive epithelial cells, they are broken down into their amino acids before leaving the cell and entering the capillary blood via what? Choices: - osmosis - convection - absorption - diffusion A:
(A).
diffusion

Ques:Q: Muscles are composed mostly of cells called what? Choices: - muscle organelles - muscle filament - muscle polymers - muscle fibers A:

Ans:muscle fibers

Q: Each line in a structural formula represents a pair of shared what? Choices: - waves - ions - atoms - electrons A:
electrons