BB 450 Unit 1 with verified answers
graded A+ passed
What are the levels of organization from atoms to organs? - correct answer
✔✔Atoms, Molecules, Macromolecules, Organelles, Cells, Tissues, Organs, and
Organisms
Where are all the places life on Earth exists? - correct answer ✔✔Life is Literally
Everywhere!
Extremophiles are found in extreme conditions and are members of the archaea
group.
Examples of extremophiles are Methanogens (strict anaerobes that produce
methane from CO2 and H), Halophiles (require high salt), and Thermoacidophiles
(require high temp and acid)
What is a eukaryote? A prokaryote? What are the major differences? - correct
answer ✔✔Eukaryote: any of the single-celled or multicellular organisms whose
cell contains a distinct, membrane-bound nucleus.
Prokaryote: is a single-celled organism that lacks a nucleus, and other membrane-
bound organelles
,The main differences is that Prokaryotes do not contain a nucleus, mitochondria,
endoplasmic reticulum, or chloroplasts while Eukaryotes do.
Are humans prokaryotes or eukaryotes? How about plants? Bacteria? Yeast? -
correct answer ✔✔Humans: Eukaryotes
Plants: Eukaryotes
Bacteria: Prokaryotes
Yeast: Eukaryotes
What are the major building blocks of macromolecules in our bodies? - correct
answer ✔✔Nucleic Acid: Nucleotides
Proteins: Amino Acids
Polysaccharides: Sugars
Lipids: Fatty Acids
Describe the differences between anabolism and catabolism? What is the
scientific (as opposed to popular media) definition of metabolism? - correct
answer ✔✔Catabolism: Breaks down macromolecules into their component
parts/building blocks. They then get further broken down into smaller molecules,
and are either execrated or go through anabolism. Amino acids can also be used in
protein synthesis.
It is oxidative and energy releasing
,Anabolism: Builds up/Synthesizes macromolecules. It takes the nutrients and
products of catabolism, takes in energy and produces proteins, nucleic acids, fats,
carbs, that can be excreted or used in catabolism.
Reductive and energy requiring
How many bonds to these molecules form? C O N P S - correct answer
✔✔Carbon: 4
Oxygen: 2
Nitrogen: 3
Phosphorous: 5 or 3
Sulfur: 2, 4, or 6
What are the electronegativities of CHONPS and what does this term mean? -
correct answer ✔✔Carbon: 2.55
Hydrogen: 2.20
Oxygen: 3.44
Nitrogen: 3.04
Phosphorous: 2.19
Sulfur: 2.58
What are the chemical properties of water that make it unique? - correct answer
✔✔1. Water is highly polar due to a difference in electronegativity btw. the
oxygen and nitrogen
, 2. Dissolves polar compounds and is a good solvent bc. of its polar nature
3. Interacts strongly with itself
What is polarity? - correct answer ✔✔Unequal sharing of electrons and
Seperation of charge
What is unique about hydrogen bonds? - correct answer ✔✔Hydrogen Bonds are
very weak which makes them very easily breakable but strong enough to hold
things together
They arise as a result in the difference of electronegativity and unequal sharing of
electrons
Know other types of covalent and noncovalent bonds and how strong they are. -
correct answer ✔✔Covalent Bonds:
1. Polar
2. Non-Polar
Noncovalent Bonds:
1. Ionic Interactions
2. Hydrophobic Interactions
3. Hydrogen Bonds
4. Van der Waals Forces
graded A+ passed
What are the levels of organization from atoms to organs? - correct answer
✔✔Atoms, Molecules, Macromolecules, Organelles, Cells, Tissues, Organs, and
Organisms
Where are all the places life on Earth exists? - correct answer ✔✔Life is Literally
Everywhere!
Extremophiles are found in extreme conditions and are members of the archaea
group.
Examples of extremophiles are Methanogens (strict anaerobes that produce
methane from CO2 and H), Halophiles (require high salt), and Thermoacidophiles
(require high temp and acid)
What is a eukaryote? A prokaryote? What are the major differences? - correct
answer ✔✔Eukaryote: any of the single-celled or multicellular organisms whose
cell contains a distinct, membrane-bound nucleus.
Prokaryote: is a single-celled organism that lacks a nucleus, and other membrane-
bound organelles
,The main differences is that Prokaryotes do not contain a nucleus, mitochondria,
endoplasmic reticulum, or chloroplasts while Eukaryotes do.
Are humans prokaryotes or eukaryotes? How about plants? Bacteria? Yeast? -
correct answer ✔✔Humans: Eukaryotes
Plants: Eukaryotes
Bacteria: Prokaryotes
Yeast: Eukaryotes
What are the major building blocks of macromolecules in our bodies? - correct
answer ✔✔Nucleic Acid: Nucleotides
Proteins: Amino Acids
Polysaccharides: Sugars
Lipids: Fatty Acids
Describe the differences between anabolism and catabolism? What is the
scientific (as opposed to popular media) definition of metabolism? - correct
answer ✔✔Catabolism: Breaks down macromolecules into their component
parts/building blocks. They then get further broken down into smaller molecules,
and are either execrated or go through anabolism. Amino acids can also be used in
protein synthesis.
It is oxidative and energy releasing
,Anabolism: Builds up/Synthesizes macromolecules. It takes the nutrients and
products of catabolism, takes in energy and produces proteins, nucleic acids, fats,
carbs, that can be excreted or used in catabolism.
Reductive and energy requiring
How many bonds to these molecules form? C O N P S - correct answer
✔✔Carbon: 4
Oxygen: 2
Nitrogen: 3
Phosphorous: 5 or 3
Sulfur: 2, 4, or 6
What are the electronegativities of CHONPS and what does this term mean? -
correct answer ✔✔Carbon: 2.55
Hydrogen: 2.20
Oxygen: 3.44
Nitrogen: 3.04
Phosphorous: 2.19
Sulfur: 2.58
What are the chemical properties of water that make it unique? - correct answer
✔✔1. Water is highly polar due to a difference in electronegativity btw. the
oxygen and nitrogen
, 2. Dissolves polar compounds and is a good solvent bc. of its polar nature
3. Interacts strongly with itself
What is polarity? - correct answer ✔✔Unequal sharing of electrons and
Seperation of charge
What is unique about hydrogen bonds? - correct answer ✔✔Hydrogen Bonds are
very weak which makes them very easily breakable but strong enough to hold
things together
They arise as a result in the difference of electronegativity and unequal sharing of
electrons
Know other types of covalent and noncovalent bonds and how strong they are. -
correct answer ✔✔Covalent Bonds:
1. Polar
2. Non-Polar
Noncovalent Bonds:
1. Ionic Interactions
2. Hydrophobic Interactions
3. Hydrogen Bonds
4. Van der Waals Forces
