Frederick Griffith | This person made an experiment that involved injecting mice with pneumonia: smooth S cells‚ rough R cells‚ heat-killed S cells‚ and heat-killed S cells with living R cells. | Avery‚ McCarty‚ and MacLeod | First to show that DNA was the genetic material‚ but not believed. Repeated Griffith’s experiment‚ but subjected the strains to different enzymes‚ isolating RNA‚ DNA‚ lipids‚ carbohydrates‚ and proteins. Only the DNA killed the mice; the others had the mice survive. | Hershey
Premium DNA
Biochemistry Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon
Premium DNA Adenosine triphosphate Metabolism
Lab 12: Meiosis kimberleigh Lewis Biology 1408-63400 Consider the Concepts Experiment: 1. A common misconception about meiosis appears when students identify which of the two divisions converts a diploid cell into two haploid cells. Meiosis I is the division immediately following DNA replication and replication does not occur again before meiosis II. However‚ meiosis I is the "reduction" division when a diploid cell forms two haploid cells. If the DNA duplicated before meiosis I‚ how
Premium Chromosome Meiosis Mitosis
psychology students at Essex with the basic information for structuring and formatting reports of research in psychology. During your time here this will be an invaluable reference. You are encouraged to refer to this document each time you write a lab report. The writing of laboratory reports is an essential part of any practical module in Psychology. This is because psychologists (and more generally most scientists) write accounts of their studies using a standard format‚ which makes explicit
Premium Scientific method Psychology Research
chain and at the bottom‚ oxygen capture these electrons along w/ hydrogen nuclei forming water electrons move down from one carrier mol. to the next losing little energy fall down a energy gradient to stable location where its more electroneg. A.5) Stages of Cellular Respiration (GLYCOSISCITRIC ACID CYCLEOXIDATIVE PHOSPHORYLATION) Glycosis: Occurs in Cytosol Begins degradation process by breaking down glucose into 2 compounds called pyruvate CAC (Krebs Cycle): Occurs in mitochondrial matrix
Free Photosynthesis Cellular respiration Adenosine triphosphate
For humans the diploid number is 46 (2n=46). 4) Meiosis is the production of gametes that result in one set of chromosomes in each gamete. Gametes fuse to form a diploid zygote that divides by mitosis and develop into a multicellular organism. 5) Mitosis and meiosis are alike in the respect that go through most of the same phases‚ and are used for reproduction purposes. However‚ meiosis results in sexual reproduction‚ in order to create multicellular organisms‚ occurring in only animals‚ humans
Premium Genetics Chromosome Gene
Chapter Five: Learning Classical Conditioning Definition of Learning - the process by which experience or practice results in a relatively permanent change in behavior or potential behavior Pavlov’s Conditioning Russian psychologist Ivan Pavlov accidentally hit upon classical conditioning by studying digestive processes of dogs Trained the dogs to salivate at the sound of a bell by presenting the sound just before food was brought into the room Eventually the dogs began to salivate at
Premium Classical conditioning Behaviorism Ivan Pavlov
AP Biology Study Guide Chapter 11 1. Categorize chemical signals in terms of the proximity of the communicating cells. Local signaling – a. Paracrine signaling – a secreting cell acts on nearby target cells by discharging molecules of a local regulator (a growth factor‚ for example) into the extracellular fluid. b. Synaptic signaling – a nerve cell releases neurotransmitter molecules into a synapse‚ stimulating the target cell. Long distance signaling- c. Hormonal signaling – specialized
Premium Signal transduction
numbers of double bonds. 4.Hydrocarbons only have hydrogen and carbon molecules‚ hence the name. Hydrocarbons are hydrophobic because they mostly consist of hydrogen and carbon bonds that have no charge‚ therefore don’t attract additional bonds. 5.Isomers are compounds made up of the same number of atoms and the same type of elements but configured differently‚ giving them different functions. There are 3 types of isomers‚ 1. Structural isomers differ in the arrangement of their bonds. 2.
Premium Oxygen Chemical bond Atom
Random Assignment An effective way of assigning individuals to groups for testing Example: Echinacea tea experiment: Hypothesis: drinking Echinacea tea relieves cold symptoms Experimental group drinks Echinacea tea 5-6 times daily. Control group drinks “sham” Echinacea tea 5-6 times daily (placebo). Both groups rated the effectiveness of their treatment on relieving cold symptoms. Minimizing Bias in Experimental Design If human subjects know whether they have received the real treatment or
Premium DNA Gene Cell