Unit 2 bio study guide- wright Questions with
Answers.
how do we characterize life - Correct answer-1. 1responds to stimuli. 2. grows and
develops. 3. reproduces. 4. uses energy (metabolizes). 5. is made of cells. 6. evolves
what came between macromolecules and the first cell - Correct answer-RNA
What was needed to create the first cell - Correct answer-Enclosure of self replicating
RNA in a phospholipid bilayer, and a cell membrane, it wouldn't be a living this if it didn't
have these
What is the fluid mosaic model? - Correct answer-states that a membrane is a fluid
structure with a "mosaic" of various proteins embedded in it
what is the fluid mosaic model made up of - Correct answer-phospholipids (structure),
proteins (transport), glycoproteins (ID), cholesterols (fluidity)
what do proteins in the membrane do - Correct answer-most jobs of the cell, transport
materials into the cell usually materials which are hydrophillic/polar, charged or large,
which need assistance to cross the membrane
What does cholesterol do? - Correct answer-Stabilize membrane
Maintain fluidity
Aids in hormone control
What chemical property determines whether molecules can pass through the cell
membrane - Correct answer-concentration, charge, and size
what types of molecules need help to get through the cell membrane - Correct answer-
non-lipid soluble materials like glucose
what types of molecules can diffuse through the cell membrane - Correct answer-non-
polar molecules like CO2 and O2
Semi-permeable membrane - Correct answer-a cell membrane that allows some
molecules to pass through but not others
what are enzymes - Correct answer-Proteins that speed up chemical reactions
how can enzymes be identified when reading its name - Correct answer-end in "ase" ex:
lactase, dehydrogenase
Answers.
how do we characterize life - Correct answer-1. 1responds to stimuli. 2. grows and
develops. 3. reproduces. 4. uses energy (metabolizes). 5. is made of cells. 6. evolves
what came between macromolecules and the first cell - Correct answer-RNA
What was needed to create the first cell - Correct answer-Enclosure of self replicating
RNA in a phospholipid bilayer, and a cell membrane, it wouldn't be a living this if it didn't
have these
What is the fluid mosaic model? - Correct answer-states that a membrane is a fluid
structure with a "mosaic" of various proteins embedded in it
what is the fluid mosaic model made up of - Correct answer-phospholipids (structure),
proteins (transport), glycoproteins (ID), cholesterols (fluidity)
what do proteins in the membrane do - Correct answer-most jobs of the cell, transport
materials into the cell usually materials which are hydrophillic/polar, charged or large,
which need assistance to cross the membrane
What does cholesterol do? - Correct answer-Stabilize membrane
Maintain fluidity
Aids in hormone control
What chemical property determines whether molecules can pass through the cell
membrane - Correct answer-concentration, charge, and size
what types of molecules need help to get through the cell membrane - Correct answer-
non-lipid soluble materials like glucose
what types of molecules can diffuse through the cell membrane - Correct answer-non-
polar molecules like CO2 and O2
Semi-permeable membrane - Correct answer-a cell membrane that allows some
molecules to pass through but not others
what are enzymes - Correct answer-Proteins that speed up chemical reactions
how can enzymes be identified when reading its name - Correct answer-end in "ase" ex:
lactase, dehydrogenase
