Bio 140 Study guides, Class notes & Summaries

JMU Bio 140 Lab Checkpoint Quiz 5-12 Questions and Answers (2023/2024) (Verified Answers)

Blinn bio 1406 Final exam Questions and Answered Already Passed 7 characteristics of life Cell and organization Energy use and metabolism Regulation and homeostasis Growth and development Reproduction Biological evolution Levels of organization Atoms, molecules, cells, tissues, organs, organism, population (same species), community(different species), ecosystem(species interacting with environment), biosphere order of classification Domain, Kingdom, Phylum, Class, Order, Famil...

Bio 1408 midterm Exam Review Question cells lack a membrane-bound nucleus. Selected Answer: Prokaryotic Question 2 2.33 out of 2.33 points You are asked to determine whether the cells on a microscope slide are plant, animal, or bacterial. After viewing them through a microscope and seeing cell walls and membrane-bound organelles you correctly conclude the cells Selected Answer: are plant cells. Question 3 2.33 out of 2.33 points are found between molecules/compounds and not...

What occurs to the two strands of the parental duplex during replication? - they separate Is replication conservative, semi-conservative, or dispersive? - semi-conservative What does it mean to be conservative? - the original DNA is kept and an exact replica is made What does it mean for DNA is be dispersive? - parts of the old and new DNA are chopped together What does it mean for DNA to be semi-conservative? - each new daughter DNA is one old strand and one new strand What was the experi...

Bio 1406 - lab exam 2 latest update graded A+ Benedicts Reagent to test for a reducing sugar Iodine Reagent to test for a starch Biuret Reagent to test for a protein Positive Test changes colors (benedicts) or turns blue-black (iodine) Negative Test stays the same color (benedicts) or turns amber (iodine) Negative for Benedicts water, potato, starch Positive for Benedicts soda, onion, milk, glucose Negative for Iodine water, glucose Positive for Iodine cornstarch ...

What occurs to the two strands of the parental duplex during replication? - they separate Is replication conservative, semi-conservative, or dispersive? - semi-conservative What does it mean to be conservative? - the original DNA is kept and an exact replica is made What does it mean for DNA is be dispersive? - parts of the old and new DNA are chopped together What does it mean for DNA to be semi-conservative? - each new daughter DNA is one old strand and one new strand What was the experi...

What is the difference between a theory and a hypothesis? - Only scale--theories deal with "big ideas" that impact large parts of the physical or natural world; hypotheses are more focused or narrower in scope. What is the difference between a hypothesis and a prediction? - A hypothesis is an idea--a testable explanation; a prediction is something that follows from a hypothesis and that you can measure example of prediction - If you boil nutrient broth and place it in an air-tight flask, ...

What is the difference between a theory and a hypothesis? - Only scale--theories deal with "big ideas" that impact large parts of the physical or natural world; hypotheses are more focused or narrower in scope. What is the difference between a hypothesis and a prediction? - A hypothesis is an idea--a testable explanation; a prediction is something that follows from a hypothesis and that you can measure example of prediction - If you boil nutrient broth and place it in an air-tight flask, ...

Bio 1406List the 12 levels of the Biological Hierarchy as discussed in class. - correct answer Atom Molecule Organelle Cell Tissue Organ Organ System Organism Population Community Ecosystem Biosphere What is the smallest chemical unit that retains all the properties of its element? - correct answer Atom A ___ is an organized collection of specific atoms - correct answer Molecule A ___ is a membrane-bound collection of molecules that perform a specific function - correct ans...

What is the difference between cations and anions? - Cation is the loss of electrons, the atom becomes more positive. Anion is the gain of electrons, the atom becomes more negative. Differentiate between mass number and atomic number. - Mass number- number of protons and neutrons. Atomic number- number of protons What are valence electrons and what is their significance? - Valence electrons are electrons in the outermost shell of an atom. They are important in determining the bonds that the...