cloning is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually.
Advantages and Disadvantages of cloning.

Cell Biology, Genetics, and Biochemistry for Pre-Clinical Students (2021) is an undergraduate medical-level resource for foundational knowledge across the disciplines of genetics, cell biology and biochemistry. This USMLE-aligned text is designed for a first-year undergraduate medical course that is delivered typically before students start to explore systems physiology and pathophysiology. The text is meant to provide the essential information from these content areas in a concise format that would allow learner preparation to engage in an active classroom. Clinical correlates and additional application of content is intended to be provided in the classroom experience. The text assumes that the students will have completed medical school prerequisites (including the MCAT) in which they will have been introduced to the most fundamental concepts of biology and chemistry that are essential to understand the content presented here. This resource should be assistive to the learner later in medical school and for exam preparation given the material is presented in a succinct manner, with a focus on high-yield concepts.

The 276-page text was created specifically for use by pre-clinical students at Virginia Tech Carilion School of Medicine and was based on faculty experience and peer review to guide development and hone important topics.

Available Formats
978-1-949373-42-4 (PDF)
978-1-949373-43-1 (ePub) [coming soon]
978-1-949373-41-7 (Pressbooks) https://pressbooks.lib.vt.edu/cellbio
Also available via LibreTexts: https://med.libretexts.org/@go/page/37584

How to Adopt this Book
Instructors reviewing, adopting, or adapting parts or the whole of the text are requested to register their interest at: https://bit.ly/interest-preclinical.

Instructors and subject matter experts interested in and sharing their original course materials relevant to pre-clinical education are requested to join the instructor portal at https://www.oercommons.org/groups/pre-clinical-resources/10133.

Features of this Book
1. Detailed learning objectives are provided at the beginning of each subsection
2. High resolution, color contrasting figures illustrate concepts, relationships, and processes throughout
3. Summary tables display detailed information
4. End of chapter lists provide additional sources of information
5. Accessibility features including structured heads and alternative-text provide access for readers accessing the work via a screen-reader

Table of Contents
1. Biochemistry basics
2. Basic laboratory measurements
3. Fed and fasted state
4. Fuel for now
5. Fuel for later
6. Lipoprotein metabolism and cholesterol synthesis
7. Pentose phosphate pathway (PPP), purine and pyrimidine metabolism
8. Amino acid metabolism and heritable disorders of degradation
9. Disorders of monosaccharide metabolism and other metabolic conditions
10. Genes, genomes, and DNA
11. Transcription and translation
12. Gene regulation and the cell cycle
13. Human genetics
14. Linkage studies, pedigrees, and population genetics
15. Cellular signaling
16. Plasma membrane
17. Cytoplasmic membranes
18. Cytoskeleton
19. Extracellular matrix

Suggested Citation
LeClair, Renée J., (2021). Cell Biology, Genetics, and Biochemistry for Pre-Clinical Students, Blacksburg, VA: Virginia Tech Publishing. https://doi.org/10.21061/cellbio. Licensed with CC BY NC-SA 4.0.

About the Author
Renée J. LeClair is an Associate Professor in the Department of Basic Science Education at the Virginia Tech Carilion School of Medicine, where her role is to engage activities that support the departmental mission of developing an integrated medical experience using evidence-based delivery grounded in the science of learning. She received a Ph.D. at Rice University and completed a postdoctoral fellowship at the Maine Medical Center Research Institute in vascular biology. She became involved in medical education, curricular renovation, and implementation of innovative teaching methods during her first faculty appointment, at the University of New England, College of Osteopathic Medicine. In 2013, she moved to a new medical school, University of South Carolina, School of Medicine, Greenville. The opportunities afforded by joining a new program and serving as the Chair of the Curriculum committee provided a blank slate for creative curricular development and close involvement with the accreditation process. During her tenure she developed and directed a team-taught student-centered undergraduate medical course that integrated the scientific and clinical sciences to assess all six-core competencies of medical education.

Accessibility Note
The University Libraries at Virginia Tech and Virginia Tech Publishing are committed to making its publications accessible in accordance with the Americans with Disabilities Act of 1990. The HTML (Pressbooks) and ePub versions of this book utilize header structures and include alternative text which allow for machine-readability.

Please report any errors at https://bit.ly/feedback-preclinical

This outline was created as a lecture outline for my online Fundamentals of Biology course to accompany Concepts of Biology by Open Stax.

Brain development can be damaged by environmental chemicals.
Philippe Grandjean, University of Southern Denmark and Harvard School of Public Health, explains the erroneous assumptions made over time about this. Studies from Faroe Islands, where people have been exposed to toxic agents, shows how this affects brains of children and their IQ levels.

This course addresses the challenges of defining a relationship between exposure to environmental chemicals and human disease. Course topics include epidemiological approaches to understanding disease causation; biostatistical methods; evaluation of human exposure to chemicals, and their internal distribution, metabolism, reactions with cellular components, and biological effects; and qualitative and quantitative health risk assessment methods used in the U.S. as bases for regulatory decision-making. Throughout the term, students consider case studies of local and national interest.

This course addresses the challenges of defining a relationship between exposure to environmental chemicals and human disease. Course topics include epidemiological approaches to understanding disease causation; biostatistical methods; evaluation of human exposure to chemicals, and their internal distribution, metabolism, reactions with cellular components, and biological effects; and qualitative and quantitative health risk assessment methods used in the U.S. as bases for regulatory decision-making. Throughout the term, students consider case studies of local and national interest.

A presentation with Professor Philippe Grandjean about the dangers of chemical interference with the developing brain. This presentation, “Children’s health - Risks to brain development from exposure to environmental chemicals”, presented on 6th November, 2019, meeting of the French High Council for Public Health (Haut Conseil de la Santé Publique, HCSP), at the Ministry for Solidarity and Health in Paris.

This resource is intended for an introductory or intermediate-level college genetics course. It begins with an exploration of DNA and genome structure and continues with a study of the molecular mechanisms that drive gene expression. Concepts of classical transmission genetics are linked to the molecular mechanisms that underlie observable phenotypes. It concludes with specific topics that synthesize information from both molecular and transmission genetics, including consideration of topics like epigenetics, cancer biology, and evolution. Examples of both historical and current problems in genetics are presented, along with conversations of the relationship between genetics and society.

The topic of this video module is how to classify animals based on how closely related they are. The main learning objective is that students will learn how to make phylogenetic trees based on both physical characteristics and on DNA sequence. Students will also learn why the objective and quantitative nature of DNA sequencing is preferable when it come to classifying animals based on how closely related they are. Knowledge prerequisites to this lesson include that students have some understanding of what DNA is and that they have a familiarity with the base-pairing rules and with writing a DNA sequence.

What is cloning and do we have clones living among us today? The answers might surprise you or maybe we should say ewe.

This course covers the analytical, graphical, and numerical methods supporting the analysis and design of integrated biological systems. Topics include modularity and abstraction in biological systems, mathematical encoding of detailed physical problems, numerical methods for solving the dynamics of continuous and discrete chemical systems, statistics and probability in dynamic systems, applied local and global optimization, simple feedback and control analysis, statistics and probability in pattern recognition.
An official course Web site and Wiki is maintained on OpenWetWare: 20.181 Computation for Biological Engineers.

This is information to be used for a General Biology I (or Introduction to Biology) course for non-science majors.

Host Harry Kreisler Welcomes Professor Sir John Gurdon for a discussion of advances in research on cell biology. Sir John reflects on his career as a scientist including his path breaking research on cloning. He offers insights into the implications of the revolution in the biological sciences.(46 min)

Precise modification of faulty genes for repair has been one of the most important goals in medicine. It is now finally within the realm of possibility thanks to the gene editing tool CRISPR. This microbial adaptive immune system can copy and cut specific DNA sequences. This animation provides a visual introduction of this revolutionary genetic tool.

Students reinforce their knowledge that DNA is the genetic material for all living things by modeling it using toothpicks and gumdrops that represent the four biochemicals (adenine, thiamine, guanine, and cytosine) that pair with each other in a specific pattern, making a double helix. They investigate specific DNA sequences that code for certain physical characteristics such as eye and hair color. Student teams trade DNA "strands" and de-code the genetic sequences to determine the physical characteristics (phenotype) displayed by the strands (genotype) from other groups. Students extend their knowledge to learn about DNA fingerprinting and recognizing DNA alterations that may result in genetic disorders.

Students perform DNA forensics using food coloring to enhance their understanding of DNA fingerprinting, restriction enzymes, genotyping and DNA gel electrophoresis. They place small drops of different food coloring ("water-based paint") on strips of filter paper and then place one paper strip end in water. As water travels along the paper strips, students observe the pigments that compose the paint decompose into their color components. This is an example of the chromatography concept applied to DNA forensics, with the pigments in the paint that define the color being analogous to DNA fragments of different lengths.

Your body is made of cells -- but how does a single cell know to become part of your nose, instead of your toes? The answer is in your body's instruction book: DNA. Joe Hanson compares DNA to detailed manual for building a person out of cells -- with 46 chapters (chromosomes) and hundreds of thousands of pages covering every part of you.

As a class, students work through an example showing how DNA provides the "recipe" for making our body proteins. They see how the pattern of nucleotide bases (adenine, thymine, guanine, cytosine) forms the double helix ladder shape of DNA, and serves as the code for the steps required to make genes. They also learn some ways that engineers and scientists are applying their understanding of DNA in our world.

Explore the relationship between the genetic code on the DNA strand and the resulting protein and rudimentary shape it forms. Through models of transcription and translation, you will discover this relationship and the resilience to mutations built into our genetic code. Start by exploring DNA's double helix with an interactive 3D model. Highlight base pairs, look at one or both strands, and turn hydrogen bonds on or off. Next, watch an animation of transcription, which creates RNA from DNA, and translation, which 'reads' the RNA codons to create a protein.