#Question id: 11799
#Section 6: Plant, Animal and Microbial Biotechnology
Companion cells in minor veins of mature leaves.
All three cell types have dense cytoplasm and abundant mitochondria, there are
three types companion cells present in
column A while its characteristics given in column B;
COLUMN A COLUMN B
A)
Ordinary companion cells i) appear well suited for taking up solutes
via cytoplasmic connections numerous plasmodesmata connecting them to bundle
sheath cells. Its having numerous small vacuoles, as well as poorly developed
thylakoids.
B)
Transfer cells ii) have chloroplasts with
well-developed thylakoids and a cell wall
with a smooth inner surface. The number of plasmodesmata connecting ordinary
companion cells to surrounding cells.
C) Intermediary cells iii) the development of fingerlike wall in growths, particularly on the cell Walls. These wall ingrowths greatly increase the surface area of the transfer cell’s plasma membrane, few plasmodesmata connect this type of companion cell to any of the surrounding cells except its own sieve element.
Which of the following correct combination;
#Question id: 3554
#Section 3: Genetics, Cellular and Molecular Biology
The diploid cell with 6 pairs of chromosomes can divide. How many possible different combinations of maternal and paternal chromosomes in metaphase?
#Question id: 21119
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
#Question id: 1672
#Section 2: General Biology
Using only random VDJ recombination, from 40 V, 23 D, and 6 J gene segments, what are the number of possible variable regions of an antigen receptor molecule?
#Question id: 4825
#Section 3: Genetics, Cellular and Molecular Biology
How many genetically different gametes can be made by an individual of genotype AaBbCcDd if gene A, B are completely link and other are unlink?