Acrosomal enzymes (acrosin and MMP2) as well as the enzymes that help establish capacitation, are inhibited by zinc, the accumulation of zinc on the zona pellucida and in the surrounding cumulus form a “zinc shield” that prevents further sperm entry

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#Unit 6. System Physiology – Plant

Glycine decarboxylase GDC multienzyme complex, present in large concentrations in the matrix of plant mitochondria, comprises four proteins, named 

H-protein (a lipoamide-containing polypeptide), 

P-protein (a 200 kDa, homodimer, pyridoxal phosphate-containing protein),

T-protein (a folate-dependent protein), and 

L-protein (a flavin adenine nucleotide–containing protein

Glycine decarboxylase GDC multienzyme complex, present in large concentrations in the matrix of plant mitochondria, comprises four proteins, named 

H-protein (a lipoamide-containing polypeptide), 

P-protein (a 200 kDa, homodimer, pyridoxal phosphate-containing protein),

T-protein (a folate-dependent protein), and 

L-protein (a flavin adenine nucleotide–containing protein

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#Id: 7290

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 7291

#Unit 6. System Physiology – Plant

The C4 plants, which typically grow at high light intensity and high temperatures, have several important characteristics: high photosynthetic rates, high growth rates, low photorespiration rates, low rates of water loss, and a specialized leaf structure

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#Unit 6. System Physiology – Plant

C4 leaf has two distinct chloroplast-containing cell types: mesophyll and bundle sheath (or Kranz, German for “wreath”) cells

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#Unit 6. System Physiology – Plant

Operation of the C4 cycle requires the cooperative effort of both cell types. No mesophyll cell of a C4 plant is more than two or three cells away from the nearest bundle sheath cell.

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#Id: 7294

#Unit 6. System Physiology – Plant