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TLS Online TPP Program

#Question id: 10899

Companion cells transport of photosynthetic products from producing cells in mature leaves to the sieve elements in the minor veins of the leaf. There are at least three different types of companion cells in the minor veins of mature, exporting leaves, All three cell types have dense cytoplasm and abundant mitochondria;

#SCPH06 I Botany
  1. transfer cells, tonoplast cell, and Xylem parenchyma
  2. ordinary companion cells,  transfer cells,  and intermediary cells
  3. tapered lignified cell, ordinary cell, and intermediary companion cells
  4. tonoplast cell, phloem parenchyma and ordinary companion cells
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TLS Online TPP Program

#Question id: 1287

#SCPH06 I Botany

Biological roles of proteoglycans and hyaluronan include all of the following, except:
TLS Online TPP Program

#Question id: 14360

#SCPH05 I Biotechnology

1 pg of an enzyme (Mr 160 000) converts 0.192 pmol/min. This enzyme is made up of four subunits. Calculate turnover number 
TLS Online TPP Program

#Question id: 675

#SCPH28 | Zoology

Which statement is not true about an α-helix?
TLS Online TPP Program

#Question id: 2072

#SCPH05 I Biotechnology

Which of the following structures would decrease the electrochemical gradient across a membrane?
TLS Online TPP Program

#Question id: 2936

#SCPH05 I Biotechnology

The stable attachment of sister kinetochores to microtubules emanating from opposite spindle poles is called: