Notebook audit: trace records and preserve limits

H1: A record needs a claim and its boundary

Paper notebook preparation only. Do not perform or design a biological experiment. Supplied records do not establish actual laboratory work, transformation success or DNA identity.

Opening input: a count states how many; a conclusion explains what that count supports against a stated expectation. A limitation says what it cannot settle. The Office of Research Integrity says records should reflect what was actually done and achieved. At 0–5 write one reason a data-only notebook needs a conclusion and limitation.

Today is Monday May 10. All needed May 6/7 teaching records appear here; prior student work is not assumed. Tuesday May 11 is the next dated class. Begin S1 status marks during work and update changes only.

N1: Conceptual notes and one inventory

In this bacterial context, transformation concerns uptake and establishment of DNA by a cell. Uptake does not by itself establish expression of every gene. A plasmid is a DNA molecule that can exist separately from a cell’s chromosome. Neither the count labels nor the band lengths identify a real plasmid here.

A colony is a visible group of microorganisms on a solid medium. A nominal colony count here is an authored number, not a photograph or real observation. Gel electrophoresis can separate DNA fragments; the supplied model assumes linear double-stranded DNA, with shorter fragments moving farther in the same comparison. These concepts are not a procedure.

At 5–25 index four supplied sections: N1 conceptual notes; C1 counts/key; D1/G1 gel reference and completed curve, with your May 7 estimates; T1 comparison rule. Use one row per section with section ID, location and supplied/checked/missing status. Keep these reference pages with the record; do not recopy every value or draw another graph.

Add an actual-method status beside N1. Add your actual May 7 plate rows. Write unavailable/pending only for a protocol, photograph, measurement or method record you do not have as teacher-confirmed evidence. Conceptual notes cannot stand in for actual methods.

C1: Complete supplied count record

BI-RECORD-PAPER-01 is the approved fictional teaching record from May 6. P | positive comparison record | 12; N | negative comparison record | 0; S | sample record | 8. Unit for each is nominal counted colonies per supplied record. These are counts, not concentration, percentages or actual plate observations.

Complete authored expectation key: P is greater than zero; N is zero; no expected S count is supplied. Compare P and N with that teaching key. S has a supplied count but no key-based success judgment. No real control is verified and no actual transformation success follows.

The counts do not establish transformation efficiency. The needed experimental evidence and DNA-amount basis are absent. No count label P/N/S is linked to a gel label X/Y/Z; do not invent that connection. Retain zero for N because it is supplied; do not turn a genuinely missing value into zero.

D1: Complete nominal gel record

BI-GEL-PAPER-01 is the same approved idealized linear-DNA record from May 6/7. Lane order is L, X, Y, Z. Common origin is 0 mm. Distances increase downward to band centers. All distances are supplied whole-mm nominal values, not measurements students made. Do not measure the printed page. No actual measurement uncertainty is supplied.

Ladder: L1 10 mm / 4000 bp; L2 20 mm / 2000 bp; L3 30 mm / 1000 bp; L4 40 mm / 500 bp. Samples: X1 20 mm; X2 30 mm; Y1 25 mm; Y2 35 mm. Z has no bands drawn, not a zero-sized fragment or proof that DNA is absent.

Full image alternative: four ladder centers descend at 10/20/30/40 mm. X has two at 20/30; Y has two at 25/35; Z has none. Each lane starts at the same 0-mm line. bp means DNA length in base pairs; mm means nominal migration distance.

G1: Completed curve and estimate reference

A completed graph is supplied, not an additional drawing task. Horizontal axis: nominal migration distance, 10–40 mm, ticks every 5. Vertical axis: log10(fragment size expressed in bp), 2.5–3.7, ticks every 0.1. Four ladder points are (10,3.6021), (20,3.3010), (30,3.0000), (40,2.6990), joined by the idealized trend.

The authored relation is size(bp)=4000×2^(-(distance_mm−10)/10), only for 10–40 mm inclusive. This is not a universal gel law. A 45-mm position is not estimable here. The model assumes linear DNA and is not validated for other molecular forms. No error bars or real repeats are supplied.

Log10 is the exponent that gives a positive number when 10 is raised to that power. Inverse conversion uses 10 raised to the log. At a halfway distance, average the two log values, not bp values. Complete lookup, log → approximate bp: 3.6021 → 4000.369; 3.4515 → 2828.134; 3.3515 → 2246.467; 3.3010 → 1999.862; 3.2505 → 1780.328; 3.1515 → 1417.425; 3.1505 → 1414.165; 3.1495 → 1410.912; 3.0505 → 1123.311; 3.0000 → 1000.000; 2.9495 → 890.225; 2.8505 → 708.761; 2.8495 → 707.131; 2.8485 → 705.505; 2.7495 → 561.694; 2.6990 → 500.035.

Use your May 7 estimates table: lane/band, mm, log, inverse bp and final bp for X1, X2, Y1 and Y2, plus your Z no-band row. If a row is missing, rebuild it from D1 and the lookup above.

Logs retain four decimal places. Round only the final size to nearest 10 bp, with halfway values rounded upward. For example, 1234 becomes 1230 and 1235 becomes 1240. Both Y midpoint logs and all inverse values are in the lookup, so no calculator is needed. At 25–45 trace one fragment estimate, not recalculate all four.

T1: One bounded count-and-pattern conclusion

Fictional pattern T expects exactly two bands, 2000 and 1000 bp, larger first. Declared classroom tolerance is 5%, with inclusive bounds 1900–2100 and 950–1050 bp. This is a teaching convention, not measured uncertainty or a validated identity test. Every band and each lane counts.

Use your May 7 comparison: check each X and Y estimate against both bounds, and check whether Z shows the two expected bands. Your teacher will confirm the class values at the start of class. A match cannot confirm plasmid identity, sequence or gene orientation; different sequences can have the same length.

At 25–45 trace one count to C1 and one size estimate to G1 with units. Write one short two-part conclusion in the same notebook. Address the count key and X/Y/Z pattern comparisons, then state why actual transformation and identity remain unestablished. Do not infer that a successful experiment produced these invented records.

A1: Honest correction, error and improvement

At 45–60 record one hypothetical documentation error and one matching documentation improvement. A possibility is losing units while copying a value; an improvement is checking that entry against its identified source. Label the error hypothetical unless genuine evidence shows it occurred. Do not invent an actual mistake or propose changes to a biological experiment.

If you find a real copying discrepancy in your current paper record, preserve the original entry, add the correction, source, reason and actual correction date. If a value or unit cannot be established from a source, mark it unavailable and request clarification. Do not guess a missing value or backdate an entry.

M1 is a complete distinct optional example. You do not have to copy its correction or create an error. If your own record has no discrepancy, say one checked value matched its source.

Q1: Check the same notebook and save

At 60–72 audit the four inventory rows, both numerical traces with units, conclusion and limits, hypothetical error and improvement. Label the lesson date May 10, 2027 separately from your actual work date. Add page labels and section IDs so another reader can locate each source. Do not invent a historical date.

At 72–80 save this same record and update S1. Submit only through the teacher-confirmed assigned route. A saved file is not evidence of delivery; delivery is not proof of teacher acceptance. If access is missing, record missing input, next action and receipt pending. No second lab report is required.

S1: Twelve genuine statuses

Use one short status per item, with an evidence pointer or missing input: 1 teacher acceptance/rubric; 2 actual protocol and method record; 3 actual experiment and approval; 4 genuine photograph. Also track 5 measured data; 6 real expected map and identity evidence; 7 actual participation; 8 official Project 6.1.2 scope/completion. Finish with 9 confirmed destination/deadline; 10 local saved notebook; 11 genuine submission receipt; 12 portfolio acceptance/tracker state.

Mark completed, pending or not checked truthfully. No method, lab, photograph, identity or participation is proved by these supplied pages. The class schedule says to finish Project 6.1.2, but actual teacher instructions and acceptance remain unverified. Paper preparation does not satisfy authentic project milestones.

Open the linked BI assignment in Turn in your work. Confirm destination and deadline with the teacher. A tracker can truthfully say saved, receipt pending; it must not claim confirmed submission without evidence. Tuesday May 11 follows; no actual lab completion is carried forward.

One reason for a conclusion and limit

Original route: Use H1 for one short opening answer.

See H1: A record needs a claim and its boundary.

Index four supplied reference sections

Original route: Use N1/C1/D1/G1/T1 to complete four inventory rows; retain the supplied pages without recopying or redrawing.

See N1: Conceptual notes and one inventory.

Trace two values and write one conclusion

Original route: Use C1/G1/T1 for one count trace, one size trace and a bounded count-and-pattern conclusion.

See C1, G1 and T1 for the count record, the size estimate and the conclusion.

One hypothetical documentation error and improvement

Original route: Use A1 to label one possible documentation error and one documentation improvement; do not invent an actual error.

See A1: Honest correction, error and improvement.

Audit this same notebook

Original route: Use Q1 to check labels, sources, missingness, units and limits in the same record.

See Q1: Check the same notebook and save.

Save and record genuine status

Original route: Use Q1/S1 to save and report genuine delivery, receipt and acceptance states.

See Q1 and S1: Twelve genuine statuses.