BIOL 1P91 Final Exam 2023/2024 Questions with correct Answers 100% Verified Graded A+ What are the 3 general components that make up an atom? - Correct Answer Protons Neutrons Electrons The sum of the atomic number and the number of neutrons is: - Correct Answer A (the atomic number) Mass Number Which of the following is/ are a polar bond?
- O-H bond in water *
- C-O in CO2
- N-N in N2
- all of the above
- two of the above - Correct Answer A) O-H bond in water
A substance dissolvable in oil is said to be: - Correct Answer Hydrophobic
- since oil is hydrophobic, it will dissolve hydrophobic substances
- like dissolves like
Amphipathic molecules have two different properties: 1 / 3
When dissolved in water, they form: - Correct Answer Amphipathic molecules have hydrophobic and hydrophilic properties and in water they form micelles.A pH of 2 is ________ than a pH of 6 - Correct Answer 10,000 times more acidic -more acidic the lower you go Which of the following macromolecules is the most hydrophobic?
- Lipids
- Proteins
- Carbohydrates
- Nucleic Acids
- All of the above
- 2 of the above - Correct Answer Lipids are the most hydrophobic
- water hating
- Hydrolysis
- Condensation
- Dehydration
- Decomposition
- All of the above
What is the following reaction?R1-OH + H-R2 --> R1-R2 + H20
F) 2 of the above - Correct Answer Two of the above:
Hydrolysis and Condensation
- they both lose a water to combine molecules
What are the 4 molecules in all living organisms - Correct Answer Hydrogen Oxygen Nitrogen 2 / 3
Carbon Which macromolecule contains a sulphydryl functional group?
- Fatty acids
- Carbohydrates
- Steroids
- Amino acid - Correct Answer Amino Acids
- this is a -SH group that is specifically found in cysteine
- starch is for plants
- glycogen is for animals
- Facilitated Transport ( movement down a concentration gradient using a protein)
- Scramblase (Random)
- / 3
What kind of bonds connect sugar monomers - Correct Answer Glycosidic bonds How do plants store energy? - Correct Answer Starch
Which protein structure involves the formation of a 3D shape due to R-group interactions? - Correct Answer Tertiary What are the three types of movement across a membrane? - Correct Answer -Diffusion (passive transport down the concentration gradient)
-Active Transport (movement against the concentration gradient without the input of energy and the aid of a protein) The protein that moves lipids from the outer leaflet to the inner leaflet of the membrane - Correct Answer Flippase