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- Question 1 of 15
A crossing was performed between the genotypes DdEeFfgg and ddEeFfGg. Assuming that the allelic pairs of all genes assort independently, the proportion of progeny having the genotype ddeeffgg is expected to be ______________%.CorrectIncorrect
- Question 2 of 15
Find the INCORRECT combination.CorrectIncorrect
- Question 3 of 15
Which one of the following statements regarding G proteins is INCORRECT?CorrectIncorrect
- Question 4 of 15
In animal cell culture, a CO2 enriched atmosphere in the incubator chamber is used to maintain the culture pH between 6.9 and 7.4. Which one of the following statements is CORRECT?CorrectIncorrect
- Question 5 of 15
Choose the CORRECT combination of True (T) and False (F) statements about microcarriers used in animal cell culture.
P. Higher cell densities can be achieved using microcarriers
Q. Microcarriers increase the surface area for cell growth
R. Microcarriers are used for both anchorage- and nonanchorage-dependent cells
S. Absence of surface charge on microcarriers enhances attachment of cellsCorrectIncorrect
- Question 6 of 15
Analysis of a hexapeptide using enzymatic cleavage reveals the following result:
Amino acid composition of the peptide is: 2R, A,V, S, Y
Trypsin digestion yields two fragments and the compositions are: (R, A, V) and (R, S, Y)
Chymotrypsin digestion yields two fragments and the compositions are: (A, R, V, Y) and (R, S)
Digestion with carboxypeptidase A yields no cleavage product.
Given: Trypsin cleaves at carboxyl side of R.
Chymotrypsin cleaves at carboxyl side of Y.
Carboxypeptidase A cleaves at amino side of the C-terminal amino acid (except R and K) of the peptide.
The correct amino acid sequence of the peptide isCorrectIncorrect
- Question 7 of 15
Which of the following complement proteins is the initiator of the membrane attack complex?CorrectIncorrect
- Question 8 of 15
Levinthal’s paradox is related toCorrectIncorrect
- Question 9 of 15
Which one of the following is a second generation genetically engineered crop?CorrectIncorrect
- Question 10 of 15
Based on the heavy chain which one of the following antibodies has multiple subtypes?CorrectIncorrect
- Question 11 of 15
The cytokinetic organelle in plant cells isCorrectIncorrect
- Question 12 of 15
Anergy refers toCorrectIncorrect
- Question 13 of 15
ABO blood group antigens in humans are differentiated from each other on basis ofCorrectIncorrect
- Question 14 of 15
Which one of the following organism is used for the determination of phenol coefficient of a disinfectant?CorrectIncorrect
- Question 15 of 15
Which one of the following Amino acids has the highest probability to be found on the surface of a typical globular protein in aqueous environment?CorrectIncorrect