BIO 1108 FINAL TEST 2025 | Updated Questions and Correct Answers |
Graded A+ | Verified Answers | Latest Version (Just Released)
The element present in all organic molecules is - (CORRECT ANSWER)Carbon
Cell membranes have distinct inside and outside faces. Which of the following statements is the most
likely explanation for the membrane's asymmetrical nature? - (CORRECT ANSWER)The two sides of a cell
membrane face different environments and carry out different functions
Which of the following statements is true about buffer solutions? - (CORRECT ANSWER)They maintain a
relatively constant pH when either acids or bases are added to them
When are most atoms stable? - (CORRECT ANSWER)When all of the electron orbitals in the valence shell
are filled
Which two functional groups are always found in amino acids? - (CORRECT ANSWER)Carboxyl and amino
groups
Nitrogen (N) is more electronegative than hydrogen (H). Which of the following is a correct statement
about the atoms in ammonia (NH3)? - (CORRECT ANSWER)Each hydrogen atom has a partial positive
charge; the nitrogen atom has a partial negative charge
Which of the following is a major difference between RNA and DNA? - (CORRECT ANSWER)Type of sugar
Saturated fats ________ - (CORRECT ANSWER)Contain more hydrogen than unsaturated fats that consist
of the same number of carbon atoms
What component of amino acid structure varies among different amino acids - (CORRECT ANSWER)The
components of the R group
The relation between amino acid and polypeptide is similar to the relation between _________ -
(CORRECT ANSWER)Nucleotide and nucleic acid
1
, Which of the following is considered to be a strong base (alkali)? - (CORRECT ANSWER)NaOH → Na⁺ +
OH⁻
Which statement about the sodium - potassium pump is false? - (CORRECT ANSWER)It is considered a
symporter
For a protein to be an integral membrane protein, it would have to be _________ - (CORRECT
ANSWER)amphipathic, with at least one hydrophobic region
About 25 of the 98 natural elements are known to be essential to life. Which 4 of these 25 elements
make up approximately 96% of living matter? - (CORRECT ANSWER)Carbon, hydrogen, nitrogen, oxygen
Which of the following statements correctly describes osmosis? - (CORRECT ANSWER)In osmosis, water
moves across a membrane from areas of lower solute concentration to areas of higher solute
concentration
Which of the following is broken when water evaporates? - (CORRECT ANSWER)Hydrogen bonds
What element does not prefer to react with other elements? - (CORRECT ANSWER)Neon
How much sodium carbonate (Na2CO3) would it take to make 1000mL of a 2M solution? - (CORRECT
ANSWER)104g
What kinds of molecules pass through a cell membrane most easily? - (CORRECT ANSWER)Small and
hydrophobic
If one strand of a DNA molecule has the sequence of bases 5'-ATTGCA-3', the mRNA synthesized
following the template will be _____
2
Graded A+ | Verified Answers | Latest Version (Just Released)
The element present in all organic molecules is - (CORRECT ANSWER)Carbon
Cell membranes have distinct inside and outside faces. Which of the following statements is the most
likely explanation for the membrane's asymmetrical nature? - (CORRECT ANSWER)The two sides of a cell
membrane face different environments and carry out different functions
Which of the following statements is true about buffer solutions? - (CORRECT ANSWER)They maintain a
relatively constant pH when either acids or bases are added to them
When are most atoms stable? - (CORRECT ANSWER)When all of the electron orbitals in the valence shell
are filled
Which two functional groups are always found in amino acids? - (CORRECT ANSWER)Carboxyl and amino
groups
Nitrogen (N) is more electronegative than hydrogen (H). Which of the following is a correct statement
about the atoms in ammonia (NH3)? - (CORRECT ANSWER)Each hydrogen atom has a partial positive
charge; the nitrogen atom has a partial negative charge
Which of the following is a major difference between RNA and DNA? - (CORRECT ANSWER)Type of sugar
Saturated fats ________ - (CORRECT ANSWER)Contain more hydrogen than unsaturated fats that consist
of the same number of carbon atoms
What component of amino acid structure varies among different amino acids - (CORRECT ANSWER)The
components of the R group
The relation between amino acid and polypeptide is similar to the relation between _________ -
(CORRECT ANSWER)Nucleotide and nucleic acid
1
, Which of the following is considered to be a strong base (alkali)? - (CORRECT ANSWER)NaOH → Na⁺ +
OH⁻
Which statement about the sodium - potassium pump is false? - (CORRECT ANSWER)It is considered a
symporter
For a protein to be an integral membrane protein, it would have to be _________ - (CORRECT
ANSWER)amphipathic, with at least one hydrophobic region
About 25 of the 98 natural elements are known to be essential to life. Which 4 of these 25 elements
make up approximately 96% of living matter? - (CORRECT ANSWER)Carbon, hydrogen, nitrogen, oxygen
Which of the following statements correctly describes osmosis? - (CORRECT ANSWER)In osmosis, water
moves across a membrane from areas of lower solute concentration to areas of higher solute
concentration
Which of the following is broken when water evaporates? - (CORRECT ANSWER)Hydrogen bonds
What element does not prefer to react with other elements? - (CORRECT ANSWER)Neon
How much sodium carbonate (Na2CO3) would it take to make 1000mL of a 2M solution? - (CORRECT
ANSWER)104g
What kinds of molecules pass through a cell membrane most easily? - (CORRECT ANSWER)Small and
hydrophobic
If one strand of a DNA molecule has the sequence of bases 5'-ATTGCA-3', the mRNA synthesized
following the template will be _____
2
