GATE Biotechnology Mock Test - 5 - GATE Biotechnology MCQ

If there exists a relationship among the following numbers, which of the subsequent numbers corresponds to the question mark?

The spinner initially points towards the west. Azad rotates it clockwise  revolutions and subsequently rotates it anti-clockwise  revolutions. After completing both movements, which direction will the spinner be pointing?

In the process of adsorption chromatography, the mechanism by which uncharged solute molecules adhere to a silica-based stationary phase is through ________.

The transfer function of a certain process is represented as G(s) = where K_p denotes the gain and τ_p signifies the time constant. This is classified as a ________ process.

Examine the following statements concerning the primary roles of the plasma membrane:
P. The plasma membrane distinguishes the fluid environments within and outside of the cell.
Q. It regulates the passage of molecules and ions into and out of the cell.
R. It facilitates recognition and communication among various cells and tissues.
S. It is involved in the synthesis of proteins utilized in the formation of the cell wall.
Select the correct combination of statements.

A matrix B is said to be skew-symmetric if it meets certain criteria.

Let [A] be a square matrix that is neither symmetric nor skew-symmetric, and let [A]^T denote its transpose. The matrices' sum and difference are defined as [S] = [A] [A]^T and [D] = [A] – [A]^T, respectively. Which of the following statements is correct?

All of the following statements regarding scanning tunneling microscopy are accurate, except for one.

Evaluate the statements below concerning traditional breeding and RDT.
P. Traditional breeding is limited to introducing desired traits found within the same species, whereas RDT can facilitate the introduction of desired traits from both the same and different species.
Q. Traditional breeding is a quicker process, while RDT requires more time.
R. RDT involves the transfer of only specific gene(s), while traditional breeding results in the transfer of numerous unselected genes.

Which of the statements above illustrates the advantages of RDT compared to traditional crop breeding methods?

A concentration of dissolved oxygen that exceeds the critical value (D_crit) results in

The rate equation for the reaction involving substances A and B is expressed as rate = k[A]ⁿ[B]^m. If the concentration of A is doubled and the concentration of B is reduced to half, what will be the ratio of the new reaction rate to the original reaction rate?

Which of the following statements regarding microscopes is accurate?

In a gene cloning procedure, which enzyme would be effective for transforming sticky ends into blunt ends?

A total of ten cells were introduced into a culture medium for animal cells. After a period of ten days, six of these cells underwent three rounds of cell division, while the remaining four cells did not divide at all. At this current stage, what is the aggregate number of kinetochores present in all the cells combined?

Identify the accurate pairing of the secretory forms of antibody classes along with their characteristics:

Which of the following assertions are accurate regarding the fluid-mosaic model of cellular membranes?

P. They have a thickness ranging from 5-8 nm and exhibit a trilaminar appearance when examined in cross-section using an electron microscope.

Q. They measure less than 1 nm in thickness and are composed of a protein layer situated between two layers of phospholipids.

R. They exist in the lipid bilayer, with proteins embedded at irregular intervals, maintained by hydrophilic interactions between lipids and the hydrophilic regions of the proteins.

S. The protein domains that are exposed on one side of the lipid bilayer differ from those that are exposed on the opposite side.

The Damköhler numbers (Da) are denoted by which expression?

If five stem cells undergo five rounds of asymmetric cell divisions, how many stem cells will be present at the conclusion of all five divisions?

The DNA sequence shown below is to be amplified by PCR:
5'GCTAAGATCTGAATTTTCC....TTGGGCAATAATGTAGCGC3'
3' CGATTCTAGACTTAAAAGG.....AACCCGTTATTACATCGCG5'
Which one of the following pair of primers can be used for this amplification?

Which of the following assertions regarding the immune response are TRUE?

[P] T cells are stimulated by antigen-presenting cells

[Q] Class II MHC proteins do not present foreign peptides to helper T cells

[R] Dendritic cells are known as professional antigen-presenting cells

W, X, and Y serve as intermediates in a biochemical pathway illustrated below:

Mutants that are auxotrophic for Z are classified into four distinct complementation groups: Z1, Z2, Z3, and Z4. The growth patterns of these mutants on media enriched with W, X, Y, or Z are indicated below (Yes: indicates growth observed; No: indicates growth not observed):

What is the sequence of the four complementation groups regarding the specific step they inhibit?

What is the application of cryo-electron microscopy?

The immune response known as delayed type hypersensitivity is categorized as one that is mediated by

Which lipid is found in the highest quantity in the plasma membrane?

The arrangement of a 1 Mb long DNA strand is random, with all four bases present in equal amounts. On average, how many nucleotides are there between two consecutive EcoRl recognition sites, GAATTC?

Aspergillus niger is cultivated in a 10,000 L stirred batch bioreactor under aerated conditions for citric acid production. Under steady state oxygen transfer conditions, the specific oxygen uptake rate of the organism and the volumetric mass transfer coefficient are and 60 min^-1, respectively.
If the oxygen solubility is 8×10^-3 kg m^-3 under the given operating conditions, based solely on oxygen dynamics, what is the maximum possible cell concentration in ________kg m^-3 (Provide your answer as an integer).

At 25 °C, the change in free energy for the hydrolysis of ATP is -32.2 kJ mol^-1. Similarly, the free energy change for the hydrolysis of ±-glycerophosphate into glycerol at 25 °C is -8.2 kJ mol^-1. Given this information, what is the free energy change associated with the synthesis of ±-glycerophosphate from glycerol and ATP, expressed in kJ mol^-1 (Provide your answer as an integer)?