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TLS Online TPP Program

#Question id: 11962

 In the digestive system, peristalsis is ________.

#I Life Science/ Life Sciences Group – I-V
  1. a process of fat emulsification in the small intestine
  2. voluntary control of the rectal sphincters regulating defecation
  3. the transport of nutrients to the liver through the hepatic portal vessel
  4. smooth muscle contractions that move food along the oesophagus
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TLS Online TPP Program

#Question id: 5612

#SCPH01 Biochemistry

Outside the egg cell membrane is an extracellular matrix that forms a fibrous mat around the egg and is often involved in sperm-egg recognition. In invertebrates, this structure is usually called the:
TLS Online TPP Program

#Question id: 11548

#SCPH28 | Zoology

If a portion of the pancreas is surgically removed from a rat and the rat subsequently loses its appetite, one explanation is that the removed portion contains cells that secrete a chemical signal that somehow stimulates appetite. Given this scenario, what type of chemical signaling is occurring?
TLS Online TPP Program

#Question id: 18714

#SCPH01 Biochemistry

At what temperature do denaturation of DNA double helix takes place?
TLS Online TPP Program

#Question id: 824

#SCPH28 | Zoology

why comparisons of the X-ray structures of hyperthermophilic enzymes with their mesophilic counterparts have failed to reveal any striking differences between them?
TLS Online TPP Program

#Question id: 15713

#SCPH01 Biochemistry

A relatively ______ concentration of auxin favours cell proliferation and root differentiation while _______levels of cytokinin promote bud differentiation.