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TLS Online TPP Program

#Question id: 11486

The contraction of skeletal muscles is based on ________

#7. System Physiology – Animal
  1. myosin filaments coiling up to become shorter
  2. actin and myosin filaments both coiling up to become shorter
  3. actin cross-bridges binding to myosin and transitioning from a high-energy to a low-energy state
  4. myosin cross-bridges binding to actin and transitioning from a high-energy to a low-energy state
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TLS Online TPP Program

#Question id: 15781

#5. Developmental Biology

Chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell states and progenitor differentiation through endocrine, paracrine, or juxtacrine mechanisms. These signaling factors:
TLS Online TPP Program

#Question id: 3893

#3. Fundamental Processes

Protein structural motifs often have general functions in common.  Which one of the following motifs is known to be involved in protein dimer formation, but not in direct protein-DNA interactions?
TLS Online TPP Program

#Question id: 8964

#9. Diversity of Life Forms

Phylogenetic trees are best described as
TLS Online TPP Program

#Question id: 3452

#11. Evolution and Behavior

Which of the following is advantage of group living?
TLS Online TPP Program

#Question id: 16087

#7. System Physiology – Animal

The sweat glands are activated by