SCI 200 Final Exam Questions and Answers Rated A+

What is the haploid number of chromosomes for humans? - 23 Mitosis - Prophase, metaphase, anaphase, telophase What are the parts of the cell (plasma) membrane? - Phospholipid, protein, and carbohydrate What stage of the cell cycle does DNA replication occur? - S Phase Endocytosis - Cell membrane surrounds a molecule (like a protein) and forms a vesicle around the molecule which is brought inside the cell Cell - Smallest identifiable unit capable of carrying on the basic tasks that we associate with living things Which cell structure is found in plant but not animal cells? - Chloroplast Fatty acids are found in - Lipids Earliest fossil of life that has been found on Earth - Stromatolite Phospholipids are found in - Cell membranes An example of a carbohydrate that is a polysaccharide that is found in plant cell walls is - Cellulose Which transport mechanisms require energy? - Active Transport Chemical evolution proposes the hypotheses for - How the first living cells originated Concentration Gradient - Moves from high concentration to low concentration What is a product of cellular respiration that is the energy currency of the cell? - ATP Cellular respiration without oxygen is called - Anaerobic respiration What type of cell is NOT produced in meiosis? - Diploid (2n) What characteristic is common to all living organisms? - They all use energy When processing mRNA what parts are usually cut out of the mRNA - Introns Which man described evolution as 'descent with modification'? - Darwin Naturalist who believed that organisms acquired new characteristics during their lifetime and then pass these characteristics to their offspring - Jean-Baptiste Lamarck DNA polymerase is an enzyme involved with what process? - DNA replication What are the normal types of sex chromosomes for a human male? - XY Genetic Drift - A change in the allele frequency of a population as a result of chance events rather than natural selection