Bio 1201

bio 1201 - chapter 8 QUESTIONS AND ANSWERS Metabolism The totality of an organism's chemical reactions, which occur anytime two or more atoms, ions, or molecules collide in such a way that they produce a new substance. Metabolic pathway Begins with a specific molecule, resulting in a certain product. §Each step is catalyzed by a specific enzyme. Catabolic pathways Some metabolic pathways release energy by breaking down complex molecules to simpler compound. Example of a catabolic pat...

bio 1201 midterm QUESTIONS AND ANSWERS Selective Permeability What the plasma membrane exhibits, which allows some substances to cross the plasma membrane more easily than others. Amphipathic A molecule that has both a hydrophobic and hydrophilic region. Metabolism the totality of an organism's chemical reactions metabolic pathway Fermentation a partial degradation of sugars or other organic fuel that occurs without the use of oxygen Aerobic respiration oxygen is consumed as a...

Bio 1201 Test 4 QUESTIONS AND ANSWERS Interphase Nucleoli are present during _____. Nucleoli are present during _____. prometaphase metaphase anaphase prophase interphase Prophase During prophase, the chromatin fibers become discrete chromosomes. Chromosomes become visible during _____. Chromosomes become visible during _____. prometaphase prophase metaphase anaphase interphase Anaphase During anaphase, sister chromatids separate and daughter chromosomes migrate to opposi...

BIO 1201: Photosynthesis QUESTIONS AND ANSWERS Jan Baptist van Helmont 1st known quantitative experiment in biology - growing tree experiment Photosynthesis process by which plants, algae, and some bacteria transform electromagnetic radiation (light) into chemical energy - input: CO2 and H2O - output: precursors of sugars and O2 Chloroplast site of photosynthesis Stroma inner compartment filled with thick fluid Thylakoid interconnected membranous sacs - site of light reaction...

BIO 1201 Practical QUESTIONS AND ANSWEERS Function of Dermal Denticles SHARK: Tough protective covering on skin that resemble tiny teeth. They have hydrodynamic properties that allow sharks to move with minimal water resistance. Nares (SHARKS/FISH) Consist of incurrent and excurrent apertures: used in odor detection, not breathing. Ampullae of Lorenzini SHARKS: Specialized sensory cells that are capable of detecting weak electric fields at short ranges, enabling sharks to locate prey...

Bio 1201 Unit: QUESTIONS AND ANSWERS Homozygous An organism that has two identical alleles for a trait (EX: AA, aa) Heterozygous An organism that has two different alleles for a trait (EX: Aa) Dominant Requiring only a single copy in order to express the associated trait or characteristic Recessive Requiring that no copies of the dominant form be present in order to express the associated trait or characteristic Allele A gene variant Genotype The genetic composition of an organi...

Bio 1201 Exam 3 QUESTIONS AND ANSWERS centromere area of attachment between two sister chromatids Kinetochores structures of proteins and specific sections of chromosomal DNA at the centromere; point of attachment of duplicated chromosome Chromatids Two copies of duplicated chromosome Spindle Apparatus formed from microtubules extending from two centromeres; as centrosomes move way from each other the microtubules lengthen to see if DNA is damaged What is the G1 checkpoint for? ...

Bio 1201 Final QUESTIONS AND ANSWERS How do cells regulate the production of enzymes through feedback inhibition and gene regulation what is the operon model a mechanism for control of gene regulation what charge do neutrons have no charge (neutral) how are protons charged positively how are electrons charged negatively how is the atomic mass calculated protons + neutrons how is the atomic number calculated number of protons are atomic mass and mass number the same yes wh...

Chapter 17 - Bio 1201 QUESTIONS AND ANSWERS The flow of information in a cell proceeds in what sequence? A. from RNA to DNA to protein B. from RNA to protein to DNA C. from DNA to protein to RNA D. from DNA to RNA to protein E. from protein to RNA to DNA D. from DNA to RNA to protein A codon consists of _____ bases and specifies which _____ will be inserted into the polypeptide chain. A. two ... nucleotide B. four ... fatty acid C. three ... amino acid D. three ... nucleot...

Bio 1201 Chapter 9 QUESTIONS AND ANSWERS In the combined processes of glycolysis and cellular respiration, what is consumed and what is produced? Glucose is consumed, and carbon dioxide is produced. Which of the following describes the process of glycolysis? It represents the first stage in the chemical oxidation of glucose by a cell. A glucose molecule is completely broken down to carbon dioxide and water in glycolysis and the citric acid cycle, but together these two processes yield ...