#Question id: 2986
#SCPH06 I Botany
During ubiquitin-mediated protein degradation in various events of cell cycle, ubiquitin-protein ligases ubiquitinylate substrate proteins, marking them for degradation by proteasomes. Cyclins are degraded through the action of two different ubiquitin-protein ligases, SCF and the anaphase-promoting complex or cyclosome. Following statements are regarding to SCF and APC/C.
A. SCF controls the G1–S phase transition by degrading G1/S phase cyclins and, CDK inhibitory proteins.
B. APC/C degrades S phase and mitotic cyclins, thereby promoting the exit from mitosis.
C. SCF and APC/C are multi-subunit ubiquitin-protein ligases that belong to the RING finger family of ubiquitin protein ligases.
D. SCF and APC/C belong to the different ubiquitin-protein ligase family, their regulation is same.
E. SCF recognizes its substrates only when they are phosphorylated.
F. SCF and APC/C both recognizes its substrates only when they are phosphorylated.
Which of the following is incorrect?
#Question id: 1040
#SCPH06 I Botany
Why might it be easier to determine the bacterium that caused pneumonia than one that caused a wound infection?
#Question id: 10903
#SCPH06 I Botany
Materials translocated in the phloem, such as sucrose, amino acids, hormones and some inorganic ions. Some inorganic solutes that move in the phloem called mobile elements. In contrast, some are relatively immobile in the phloem.
A) Immobile elements
B) Mobile elements
i) potassium, magnesium, phosphate, and chloride
ii) caesium, zinc, magnesium and iron
iii) nitrate, calcium, sulfur, and iron
iv) potassium, calcium, cobalt and caesium
Which of the following are the correct match of mobile and immobile elements in the phloem?
#Question id: 4811
#SCPH06 I Botany
Three incompletely link gene as a B-A-C order. A cross allowed between AAbbcc X aaBBCC produce f1 progeny allowed test cross. Which of the following offspring is a result of double cross over?
#Question id: 2621
#SCPH01 Biochemistry
The leaky expression of lac genes ensures that,