Answer all questions in the spaces provided. box 0 1 . 1 What is a gene? [1 mark] 0 1 . 2 Describe how the production of messenger RNA (mRNA) in a eukaryote cell is different from the production of mRNA in a prokaryote cell. [2 marks] 0 1 . 3 Scientists produced a short, single-stranded, artificial nucleic acid, called PNA. The PNA binds to a small section of DNA. The scientists introduced PNA into cells and discovered that these cells produced less mRNA than cells that did not contain ...

IB BIOLOGY TOPIC 3 GENETICS COMPLETE STUDY GUIDE 2023. HKEXCEL LTD. 1 Topic 3.1 – Genes Genetics x It is the study of variation and inheritance. The basic unit of inheritance is a gene. Gene x A gene is defined as a heritable factor that controls a specific characteristic for an organism, or a section of DNA that codes for the formation of a polypeptide. x A gene occupies a specific position on a chromosome. x A typical animal or plant cell nucleus contains thousands of genes. The ...

Test Bank to Accompany Life The Science of Biology, 11th Edition Sadava, Hillis, Heller, Hacker Table of Contents Chapter 5: Cells: The Working Units of Life ................................................................................. 1 Chapter 6: Cell Membranes ....................................................................................................... 86 Chapter 7: Cell Communication and Multicellularity ................................................................. 185 Cha...

Water properties: • Cohesion: like molecules attract to each other • Water is a polar molecule that forms a hydrogen bond with other water molecules. • The negatively charged oxygen atom of one water molecule forms a hydrogen bond with a positively • charged hydrogen atom of another water molecule. This attractive force between these molecules is called cohesion which helps plants draw water from the root through the xylem to the leaf • Adhesion: unlike molecules attract to eac...

IB BIOLOGY TOPIC 4 ECOLOGY COMPLETE STUDY GUIDE 2023 Topic 4.1: Ecology – Species, communities and ecosystem The continued survival of living organisms including humans depends on sustainable communities. • Understanding: Species are groups of organisms that can potentially interbreed to produce fertile offspring.  Species: groups of organisms that can potentially interbreed to produce fertile off-springs  Crossbreeding: interbreeding between different species with off-springs ...

Biology: Concepts and Applications 10th Edition by Cecie Starr, Christine Evers & Lisa Starr - Complete, Elaborated and Latest ALL Chapters(1-21) Included |898| Pages - Questions & Answers- Test bank ISBN-10 6 ISBN-13 978-9 INTRODUCTION. 1. The Science of Biology. Unit I: PRINCIPLES OF CELLULAR LIFE. 2. Life's Chemical Basis. 3. Molecules of Life. 4. Cell Structure. 5. Ground Rules of Metabolism. 6. Where It Starts-Photosynthesis. 7. Releasing Chemical Energy. UNIT II: ...

IB BIOLOGY TOPIC 1 CELL BIOLOGY QUESTIONS AND ANSWERS COMPLETE STUDY GUIDE 2023 IB Biology Topic 1: Cell Biology 1. Cell theory: The theory that cells form the fundamental structural and functional units of all living organisms. 2. Differentiation: The expression of a particular gene(s) and not others in order for cell specialisation. 3. Emergent properties: The idea that the sum of an organism is more than the parts interacting and combining. Living things become more complex as they...

QUESTIONS AND ANSWERS

Hershey & Chase experiment Experiment target: T2 Bacteriophage (a kind of virus, containing DNA and a protein coat) & E.Coli bacteria How does virus work? • Virus injects their genetic material into cell • Non-genetic part of the virus (protein coat) remains outside the cell • Infected cell produces large amount of viruses based on the genetic material in the cell • The cell bursts releasing copied viruses Experimental methodology: • Amino acid containing radioactive isotopes ...

BTEC APPLIED SCIENCE UNIT 2 BIOLOGY CHROMATOGRAPHY COMPLETED TO DISTINCTION 2023 Chromatography The term chromatography can be described as a technique used to separate the compounds within a mixture (or solutes), determined by the relative proportions of each solute distributed between a moving fluid stream, which is called the mobile phase, as well as a stationary phase which could be potentially contiguous. The stationary phase might be in the form of a solid or a liquid whereas duri...

Biology Lab 1106 Baylor University Exam 3 QUESTIONS AND VERIFIED ANSWERS 2023. 1. Phylum Porifera (sponges): asymmetrical lack true tissues have unique cells called CHOANOCYTES (flagellated cells that will draw in water and filter food particles) Genus: Grantia, Spongia, Euplectella 2. Phylum Porifera Genus Grantia: isolated spicules walls of sponges contain amoebocytes and crystallized structures called spicules incurrent canals and flagellated canals 3. Phylum Porifera Genus Spon...