QUESTION 1 / 20 · RECOMBINANT DNAMedium
Restriction enzymes are naturally used by bacteria to…
RESTRICTION DIGEST + GEL ELECTROPHORESIS
Cut a 10 kb piece of DNA and run it on a gel
Restriction enzymes cut DNA only at their recognition sequence. On a gel, an electric field pulls the negatively charged fragments towards the positive end, and small fragments travel furthest. Choose enzymes, then read the bands against the ladder.
CUT MAP · LINEAR 10 KB FRAGMENT
02.5k5k7.5k10k
FRAGMENTS3 fragmentsTotal: 10,000 bp
A straight piece cut 2 times gives 3 fragments: one more than the number of cuts. Read each band's size by comparing it with the ladder on the left.5.4 kb2.8 kb1.8 kb
What this biotechnology test covers, in short
Twenty multiple-choice questions at upper-secondary to first-year university level, four on each of five topics: recombinant DNA, DNA tools and analysis, genome editing, medical biotechnology, and agricultural and industrial biotechnology.
It builds on the molecular biology and genetics tests. The DNA map in the lab is illustrative, but EcoRI, BamHI and HindIII and their sites are real. The test is our own and not normed.
By What's Your IQ · Reviewed 5 Oct 2026- Format
- 20 multiple-choice questions
- Level
- A-level / AP to first-year
- Bonus
- Restriction digest and gel simulator
- Milestone
- First recombinant DNA, 1973