PSU BIO 230 EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Why is DNA antiparallel?
Answer:
Each chain has a 5' end and a 3' end & they run in opposite directions.
Q: 5' end
Answer:
has a phosphate group
Q: 3' end
Answer:
hydroxyl group
Q: Where does DNA migrate in gel electrophoresis
Answer:
towards the positive electrode. DNA
fragments are negative
,PSU BIO 230 EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Phosphodiester bonds
Answer:
hold nucleotides together
Q: Relationship between temp, UV, and DNA denaturation
Answer:
Increased temp causes helix to
unwind (hydrogen bonds are broken) and separate which leads to greater UV
absorption.
Q: Chromosomes
Answer:
threadlike structures made of DNA molecules that contain the genes
Q: genes
Answer:
DNA segments that serve as the key functional units in hereditary transmission.
, PSU BIO 230 EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Alelles
Answer:
different/alternative forms of genes
Q: genome
Answer:
All the genetic information in an organism; all of an organism's chromosomes.
Eukaryotes have the largest genome
Q: Enhancer
Answer:
A segment of eukaryotic DNA containing multiple control elements, usually
located far from the gene whose transcription it regulates.
Q: activator
Answer:
A protein that binds to DNA and stimulates transcription of a specific gene.
Latest 2026 Update
Q: Why is DNA antiparallel?
Answer:
Each chain has a 5' end and a 3' end & they run in opposite directions.
Q: 5' end
Answer:
has a phosphate group
Q: 3' end
Answer:
hydroxyl group
Q: Where does DNA migrate in gel electrophoresis
Answer:
towards the positive electrode. DNA
fragments are negative
,PSU BIO 230 EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Phosphodiester bonds
Answer:
hold nucleotides together
Q: Relationship between temp, UV, and DNA denaturation
Answer:
Increased temp causes helix to
unwind (hydrogen bonds are broken) and separate which leads to greater UV
absorption.
Q: Chromosomes
Answer:
threadlike structures made of DNA molecules that contain the genes
Q: genes
Answer:
DNA segments that serve as the key functional units in hereditary transmission.
, PSU BIO 230 EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Alelles
Answer:
different/alternative forms of genes
Q: genome
Answer:
All the genetic information in an organism; all of an organism's chromosomes.
Eukaryotes have the largest genome
Q: Enhancer
Answer:
A segment of eukaryotic DNA containing multiple control elements, usually
located far from the gene whose transcription it regulates.
Q: activator
Answer:
A protein that binds to DNA and stimulates transcription of a specific gene.
