Mock Test

Exam: BPSC Subject: General Science Topic: Biology

Total Questions: 20

Q1. The 'cost-benefit analysis' in the study of foraging behavior evaluates:

The energy expenditure versus the nutritional gain from a food source. The risk of predation versus the reward of finding food. The time spent foraging versus the social interactions within a group. The efficiency of searching versus the quality of the food item.
Q2. The innermost part of a mitochondrion, where the Krebs cycle occurs, is called the:

Cristae Outer membrane Mitochondrial matrix Inner membrane
Q3. Which of the following is an example of a drug that exhibits non-linear pharmacokinetics (Michaelis-Menten kinetics)?

Aspirin at low doses Phenytoin Digoxin Warfarin
Q4. When assessing the impact of pesticides on aquatic ecosystems, the presence and abundance of specific algal species can serve as bioindicators. For instance, a bloom of cyanobacteria might suggest:

Low nutrient levels and high dissolved oxygen Eutrophic conditions and elevated nutrient input (e.g., phosphorus) Heavy metal contamination Acidification of the water body
Q5. The scientific name *Escherichia coli* refers to a bacterium. *Escherichia* is the:

Species name Specific epithet Genus name Family name
Q6. The mucociliary escalator in the respiratory tract is a form of:

Acquired immunity Specific immunity Innate immunity Antibody production
Q7. The process of neural crest cell migration, a defining feature of vertebrate development, involves complex interactions between the cells and their environment. Which extracellular matrix component is crucial for guiding neural crest cell movement?

Collagen IV Laminin Fibronectin Hyaluronic acid
Q8. When modeling molecular diffusion in a cell, which of the following approaches would be most appropriate for capturing the random walk behavior of molecules and their eventual spreading?

Ordinary Differential Equations (ODEs) without spatial terms. Partial Differential Equations (PDEs) describing Fick's laws of diffusion. Agent-based modeling with stochastic movement rules. Boolean networks.
Q9. Introducing a new species of insect to control an invasive weed is an example of:

Augmentative biological control Conservation biological control Classical biological control Integrated pest management
Q10. The process of membrane potential generation and maintenance in neurons is primarily governed by:

The Donnan potential due to immobile anions. Active pumping of ions by the Na+/K+-ATPase pump. Selective permeability of the lipid bilayer to ions. Diffusion potentials generated by ion concentration gradients and membrane permeability.
Q11. The 'acclimation' of phytoplankton to varying light intensities in aquatic ecosystems primarily involves:

Changes in pigment composition, such as increasing chlorophyll a to c ratios. Alterations in cell size and shape to optimize light capture. Regulation of photosynthetic electron transport rates. All of the above.
Q12. In cell signaling, receptor tyrosine kinases (RTKs) are crucial. Upon ligand binding, what is the characteristic initial event that leads to downstream signaling cascades?

G-protein activation. Conformational change leading to receptor dimerization and autophosphorylation of tyrosine residues. Opening of ion channels. Activation of cyclic nucleotide phosphodiesterases.
Q13. In a biological experiment, if the p-value is found to be 0.03, what conclusion can be drawn at a significance level of 0.05?

The null hypothesis is supported The results are statistically insignificant The null hypothesis is rejected The sample size is insufficient
Q14. The mechanism by which some DNA viruses, such as adenoviruses, initiate viral DNA replication in the absence of a primer involves:

A viral terminal protein acting as a primer A cellular tRNA molecule Self-priming by the viral DNA strand A viral RNA primer synthesized by primase
Q15. The stratum lucidum is a translucent layer of the epidermis found primarily in the skin of the:

Back Palms of the hands and soles of the feet Forehead Abdomen
Q16. A model that simulates the behavior of individual biological agents (e.g., cells, molecules) and their interactions is known as:

A statistical model An agent-based model A compartmental model A mechanistic model
Q17. Which of the following is a benefit of biological pest control?

Widespread toxicity Development of resistant pests Reduced environmental impact High risk to beneficial insects
Q18. The amygdala is a key structure involved in processing which type of emotion?

Joy and happiness Fear and anxiety Disgust and aversion Sadness and grief
Q19. Which of the following is a major threat to coral reef ecosystems?

Increased sunlight penetration Decreased ocean acidity Coral bleaching due to warming waters Increased nutrient runoff from land
Q20. The cytoskeleton is a dynamic network. Which protein is the monomeric subunit of microfilaments and plays a crucial role in cell shape, muscle contraction, and cell motility?

Tubulin Keratin Actin Myosin

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