Molecular Biology

Course Description

Molecular Biology is a study of the molecular level of the principles governing DNA replication, repair, RNA transcription, and protein synthesis in both prokaryotes and eukaryotes. It surveys molecular processing, and recombinant DNA technology.

Within the SCNS taxonomy, PCB is the Process Biology prefix. The University of West Florida publishes this at 3 semester hours through the Department of Biology, College of Science and Engineering. It is offered at approximately 4 Florida institutions.

Molecular biology is where a biology degree becomes a laboratory trade. The content is the mechanism of the central dogma in detail, but the employable part is the recombinant DNA technology — cloning, PCR, sequencing, expression and editing — which is the daily work of biotechnology, clinical genomics, agricultural science and academic research alike.

⚠ The field has moved faster than most undergraduate curricula. High-throughput sequencing, CRISPR-based editing and mRNA therapeutics all became routine within the working lifetime of current faculty. Expect the textbook to lag the literature, and expect the instructor to supplement it.

Two administrative points on this course are unusual and worth reading below: UWF requires a minimum grade in the prerequisites, and the material and supply fee for this course is assessed on the laboratory rather than here.

⚠ The contact-hour figure is derived — the University of West Florida publishes none

UWF's catalog publishes a credit value in semester hours, the college and department, prerequisites and co-requisites, and fee notices. It does not publish contact hours, a lecture and laboratory split, or terms of offering for any course. Every contact-hour value in a UWF guide in this repository is derived. The figure applies the standard lecture convention of 15 contact hours per credit, giving 45 hours for 3 semester hours. Confirm the meeting schedule with the department.

Learning Outcomes

Required Outcomes

• Describe DNA structure, topology, and packaging.
• Describe the mechanism of DNA replication in prokaryotes and eukaryotes.
• Describe the enzymes of replication and their roles.
• Describe DNA damage, repair pathways, and their failure in disease.
• Describe mutation, recombination, and mobile genetic elements.
• Describe transcription and its machinery in both cell types.
• Describe the regulation of transcription and operon logic.
• Describe RNA processing including splicing and its regulation.
• Describe the mechanism of translation and the genetic code.
• Describe post-translational modification and protein targeting.
• Describe eukaryotic gene regulation including chromatin and epigenetics.
• Describe non-coding RNA and RNA interference.
• Describe the principles and applications of PCR.
• Describe molecular cloning and vector systems.
• Describe DNA sequencing methods including high-throughput approaches.
• Describe gene expression analysis methods.
• Describe genome editing including CRISPR-based systems.
• Describe applications of recombinant DNA technology.
• Interpret data from standard molecular biology methods.
• Discuss ethical and regulatory issues raised by genetic technology.

Optional Outcomes

• Read and interpret a primary research paper in the field.
• Relate the material to a Florida ecosystem, organism, or health problem.
• Describe current research directions in the area.
• Describe how the material supports graduate or professional study.
• Seek undergraduate research experience related to the topic.

Major Topics

Required Topics

• DNA structure, topology, packaging
• DNA replication mechanisms
• Enzymes of replication
• DNA damage and repair
• Mutation, recombination, mobile elements
• Transcription machinery
• Transcriptional regulation and operons
• RNA processing and splicing
• Translation and the genetic code
• Post-translational modification and targeting
• Chromatin and epigenetic regulation
• Non-coding RNA and RNA interference
• PCR principles and applications
• Molecular cloning and vectors
• DNA sequencing including high-throughput
• Gene expression analysis
• Genome editing and CRISPR
• Recombinant DNA applications
• Interpreting molecular data
• Ethics and regulation

Optional Topics

• Primary literature
• Florida applications
• Current research directions
• Graduate and professional preparation
• Undergraduate research

Resources & Tools

• A molecular biology text — Watson's Molecular Biology of the Gene or Lewin's Genes; whichever the instructor assigns.
• NCBI (ncbi.nlm.nih.gov) — free; BLAST, GenBank, and PubMed. Learning to use BLAST properly is a concrete, portable skill and takes an afternoon.
• Addgene's molecular biology reference and protocol pages — free; the clearest freely available explanations of cloning and CRISPR method.
• UCSC Genome Browser and Ensembl — free; real genome data, and far more convincing than a textbook diagram of a gene.
• Benchling or SnapGene Viewer — free tiers exist; sequence design and plasmid mapping tools used in working laboratories.
• NCBI (ncbi.nlm.nih.gov) — free; PubMed, GenBank, BLAST and the rest of the toolkit, used professionally rather than only pedagogically.
• A UWF librarian — included in enrolment; an hour on database searching pays for itself across a whole degree.

Career Pathways

• Biological technicians — SOC 19-4021; the common direct entry point with a bachelor's degree.
• Biological scientists — SOC 19-1020; ⚠ independent research roles generally require a doctorate, and this is worth knowing early rather than late.
• Medical and clinical laboratory technologists — SOC 29-2011; ⚠ note that Florida licenses clinical laboratory personnel, so a biology degree alone does not permit bench work in a clinical laboratory — see the MLS prefix guides.
• Biotechnology and pharmaceutical industry — research associate, quality control and manufacturing roles; molecular technique competence is the entry currency.
• Environmental and conservation science — SOC 19-2041; Florida Fish and Wildlife Conservation Commission, water management districts, the Florida Department of Environmental Protection, and consulting firms.
• Marine and coastal science — a genuine Florida strength, including NOAA, Florida Sea Grant, Mote Marine Laboratory and the estuarine programmes on the Gulf coast near UWF.
• Public health laboratories — the Florida Department of Health Bureau of Public Health Laboratories.
• Science teaching — SOC 25-2031; ⚠ Florida K-12 teaching requires state certification that a biology degree alone does not provide.
• Professional and graduate pathways — medicine, dentistry, veterinary medicine, physician assistant, pharmacy, and research doctorates. This prefix is the core of a pre-health undergraduate plan.
• ⚠ An honest note on laboratory experience. Coursework laboratories are necessary and not sufficient — undergraduate research with a faculty member is what distinguishes a competitive graduate or professional applicant, and it is arranged by asking, usually earlier than students think.

Special Information

⚠⚠ PCB4524 and PCB4524L — how the pair is bound

• UWF publishes a Co-requisite: PCB4524 field on the laboratory entry. The lecture does not name the laboratory in return, so the binding runs one way — a student can take the lecture without the laboratory.
• ⚠ Many Florida institutions carry this material as a single integrated C course. UWF splits it into separately numbered lecture and laboratory, and SCNS equivalency does not cross numbers — so transfer between the two forms is evaluated by hand. Carry a syllabus in either direction.
• Take them together where the department intends it. The laboratory is designed to run alongside the lecture topics.
• ⚠ Budget for the pair. It is 4 semester hours in total, not 3, and the laboratory carries its own scheduled session.

⚠⚠ A grade of "C−" or higher is required in the prerequisite courses

• UWF states this explicitly for Molecular Biology, and it is not the default across the catalog — most PCB entries state no minimum grade at all.
• ⚠ A passing grade is therefore not automatically a qualifying grade. A D in BCH 3033 or PCB 3063 counts toward the degree but does not open this course.
• Check the grade before you plan the term, not during registration week. Repeating a prerequisite adds a term to the sequence, and this course sits late in it.
• The requirement is defensible. Molecular biology is built directly on biochemistry and genetics; a student who did not secure those will spend the term relearning them under load.

⚠ A laboratory fee is assessed

• ⚠⚠ UWF publishes the fee notice on THIS entry but states it applies "for the corresponding lab." That is worth reading carefully — the charge attaches to the laboratory enrolment, and the notice appears on the lecture. A student reading only the laboratory entry may not see it announced there.
• The amount is in the catalog's separate Material & Supply and Equipment Fees section. ⚠ Budget for it — laboratory fees are billed with tuition and are invisible when a term's cost is estimated from credit hours alone.
• Ask the department for the cumulative total across a term of laboratory courses, since a science student commonly takes more than one.

⚠ Offered concurrently with the graduate PCB5527

• UWF teaches this alongside PCB5527, with graduate students assigned additional work. The pattern is routine at UWF and is confined to 4000-level courses across the corpus.
• The effect on an undergraduate is a section with graduate students in it and reading pitched to work at both levels. Undergraduate requirements are lower by design — the differential is in the additional graduate work.
• ⚠ For a student considering graduate study it is a useful preview, and the instructor sees you working next to the standard you would be held to.

⚠⚠ The asterisk in a UWF prerequisite means the course may be taken at the same time

• UWF marks a concurrent course with an asterisk, defined on the catalog's Course Information page as: "This course may be taken prior to or during the same term."
• ⚠ A prerequisite written WITHOUT an asterisk must be completed first; one written WITH an asterisk may be taken in the same term. Reading an asterisked prerequisite as sequential adds a term for no reason.
• UWF also uses an explicit Co-requisite: field, which is the stricter form — conventionally meaning the same term rather than prior-or-same. Both notations appear in this prefix.
• Confirm with an advisor; the registration system, not the catalog text, is what enforces it.

⚠⚠ Biology laboratory safety

• Know the location of the eyewash, safety shower, fire extinguisher and spill kit before you start work. That is a real instruction rather than a formality.
• ⚠ Eye protection and a lab coat are required, closed shoes are required, and never eat, drink or store food in a laboratory.
• Microbiological work is conducted at the containment level the organism requires, and ⚠ cultures are never opened outside the appropriate containment. Everything is autoclaved or disinfected before disposal.
• ⚠⚠ Human tissue, blood and body fluids are handled under Standard Precautions and are treated as infectious regardless of source. Sharps go into a sharps container at the point of use, and needles are never recapped by hand.
• Chemical hazards are real in a molecular laboratory — some nucleic acid stains and fixatives are mutagenic or carcinogenic, and phenol and chloroform cause chemical burns. Read the safety data sheet before first use, not after.
• ⚠ Ultraviolet transilluminators cause eye and skin burns; use the shield.
• Report every spill, cut and exposure immediately, however minor it seems.
• Tell the instructor if you are pregnant or immunocompromised; several standard laboratory materials and organisms warrant substitution.

Course format and position in the curriculum

• Lecture with examinations and problem work.
• ⚠ No "permission is required" marking appears anywhere in the PCB prefix, unlike UWF's clinical health prefixes — enrolment is gated by prerequisites rather than by cohort admission.
• UWF publishes no contact hours, lecture and laboratory split, or terms of offering for any course. Confirm the offering pattern with the department.

How Florida course levels affect transfer

The first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions, and 3000 to 4000 is unproblematic since both are upper division. The boundary that actually matters is 2000 to 3000, where lower-division credit generally cannot satisfy an upper-division requirement. ⚠ For biology the specific transfer hazard is the split-versus-integrated question: UWF numbers lecture and laboratory separately where many institutions use one C course, and SCNS equivalency does not cross numbers. Carry a syllabus, and expect a transfer evaluation of either half to be done by hand.

PCB4524 is 3 semester hours at the University of West Florida.