#Question id: 11666
#SCPH28 | Zoology
The osmoregulatory process called secretion refers to the ________.
#Question id: 3849
#SCPH28 | Zoology
Which of the following is short 20 to 22-nucleotide single-stranded RNAs that block the expression of complementary or partially complementary mRNAs.
#Question id: 361
#SCPH05 I Biotechnology
Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.
#Question id: 27848
#Research Methodology
Which country’s plant mycologist is the first person in the world to contract a plant fungal disease?
#Question id: 11799
#SCPH05 I 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;