Free Biomolecular Modeling and Simulations Certification Assessment - StemSkills Lab
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Free Biomolecular Modeling and Simulations Certification Assessment

StemSkills Lab > Free Biomolecular Modeling and Simulations Certification Assessment

Free Biomolecular Modeling and Simulations Certification Assessment

Test your knowledge of biomolecular modeling: homology modeling, solvent models, force fields, and validation. Pass at 70% to earn a verifiable StemSkills certificate. Download it as a PDF and add it to your LinkedIn profile. It is free.

Biomolecular Modeling and Simulations certification assessment

1
Take the quiz
20 questions on biomolecular modeling and simulations. About 20 minutes, at your own pace. No sign-up needed to start.
2
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One click with Google. Your score is saved to your account so you can see whether you passed.
3
Pass? Get certified
Score 70% or more and download your verifiable certificate, then add it to LinkedIn.
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Biomolecular Modeling and Simulations Certification Assessment

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Free certification assessment. Pass at 70% to earn a verifiable StemSkills certificate.

  • Questions count: 20
  • Passing grade: 70%
  • Time limit: 20 minutes
Start Quiz
1.
Homology (comparative) modeling builds a 3D model using:
A DNA gel
Only the target sequence with no templates
A related protein of known structure as a template
A mass spectrum
2.
A prerequisite for reliable homology modeling is:
No alignment
0% sequence identity to any known structure
A random template
Sufficient sequence identity to a suitable template (generally higher = better)
3.
The Protein Data Bank (PDB) primarily stores:
Gene expression levels
Reaction kinetics tables
Experimentally determined 3D biomolecular structures
Codon usage
4.
A Ramachandran plot evaluates:
Solvent density
Backbone φ/ψ dihedral angles (stereochemical quality)
Ligand affinity
Charge distribution
5.
Explicit solvent models water as:
A uniform dielectric constant only
Vacuum
A single point charge for the whole box
Individual water molecules in the system
6.
Implicit solvent (e.g., GB/PB) approximates water as:
A continuum dielectric medium
Explicit molecules
Ice
A protein
7.
Energy minimization finds:
A nearby local energy minimum of the structure
The sequence
The melting temperature
The global maximum energy
8.
A force field in biomolecular simulation is:
A parameterized potential energy function for the molecular system
An alignment score
A microscope
A magnetic device
9.
Which is an example of a common protein force field family?
Clustal
BLAST
ImageJ
AMBER / CHARMM / OPLS / GROMOS
10.
Model validation tools (e.g., PROCHECK/MolProbity) primarily assess:
mRNA levels
Stereochemical/geometry quality of a structure or model
Ligand solubility
Gene function
11.
SASA (solvent-accessible surface area) quantifies:
How much surface is exposed to solvent
The timestep
The net charge
The number of chains
12.
Coarse-grained models (e.g., MARTINI) improve efficiency by:
Grouping several atoms into single interaction beads
Adding more atoms
Removing the force field
Using quantum mechanics for all atoms
13.
Quantum mechanics/molecular mechanics (QM/MM) is used when:
The protein is ignored
Only water matters
No chemistry occurs
Part of the system (e.g., a reaction center) needs quantum treatment while the rest is classical
14.
Loop modeling is often the hardest part of homology modeling because loops:
Contain no atoms
Never contact solvent
Are always helical
Are variable/flexible and poorly conserved between template and target
15.
A multiple sequence alignment (MSA) contributes to modeling by:
Measuring temperature
Setting the barostat
Removing water
Identifying conserved residues and guiding template/target alignment (and contacts)
16.
Which statement about simulation timescales is correct?
Many functional motions exceed typical all-atom MD reach, motivating enhanced sampling
Timescale is irrelevant
All biological processes occur within 1 fs
MD can always reach seconds trivially
17.
Enhanced-sampling methods (e.g., metadynamics, REMD) aim to:
Fix the sequence
Overcome energy barriers and sample rare events more efficiently
Slow down sampling
Delete the solvent
18.
Free-energy methods (e.g., FEP, MM/PBSA) are used to estimate:
Relative/absolute binding or solvation free energies
The crystal color
The camera angle
The gene promoter
19.
A key reason to run replicas or repeat simulations is to:
Assess reproducibility and statistical significance of observations
Change the force field mid-run
Waste compute deliberately
Avoid any analysis
20.
Before trusting any model or simulation result, a good practice is to:
Ignore the force field
Publish immediately
Remove all hydrogens
Validate against experimental data and check convergence/quality metrics
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