Biology 100 2025/2026 Exam Questions
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What does STR stand for? - 🧠 ANSWER ✔✔short tandem repeats
What is the genome of an organism? - 🧠 ANSWER ✔✔The entire genetic material
of an organism (including all of the chromosomes and the mitochondria).
What does PCR stand for? - 🧠 ANSWER ✔✔polymerase chain reaction
protein synthesis - 🧠 ANSWER ✔✔the formation of proteins by using information
contained in DNA and carried by mRNA
What is protein made of? - 🧠 ANSWER ✔✔amino acids
What does tRNA do? - 🧠 ANSWER ✔✔It transfers amino acids to a growing
protein chain on the ribosome.
What does mRNA do? - 🧠 ANSWER ✔✔it passes through the nuclear pores and
goes to the ribosomes to give the codes to make proteins
1
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,What does the A-T and G-C base pairing provide? - 🧠 ANSWER
✔✔complementarity of the two strands and chemical stability to the helix
What are the A-T and G-C base pairs also known as? - 🧠 ANSWER ✔✔Genetic
Code
What is a gene? - 🧠 ANSWER ✔✔segment of DNA that codes for a protein
What is the central dogma of molecular biology? - 🧠 ANSWER ✔✔DNA -> RNA
-> Protein
What does U replace in RNA? - 🧠 ANSWER ✔✔T
A chain of amino acids is called - 🧠 ANSWER ✔✔polypeptide
Mutations are responsible for - 🧠 ANSWER ✔✔the huge diversity in genes
between and among organisms
Mutations - 🧠 ANSWER ✔✔-are random
-happen during DNA replication
-mutagens
What do mutations change? - 🧠 ANSWER ✔✔Mutations change the genetic
information of a cell
2
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
, What do mutations do? - 🧠 ANSWER ✔✔They change the sequence of the DNA
bases in a gene which produces a genetic variation.
They sometimes lead to changes in the protein that a gene codes for.
What are mutagens? Give an example. - 🧠 ANSWER ✔✔physical or chemical
agents that can cause mutations.
-Smoking
-UV lights
-Chemicals
Evolution acts on - 🧠 ANSWER ✔✔mutations
point mutation - 🧠 ANSWER ✔✔gene mutation in which a single base pair in
DNA has been changed
Substitution - 🧠 ANSWER ✔✔A mutation in which a nucleotide or a codon in
DNA is replaced with a different nucleotide
insertion or deletion - 🧠 ANSWER ✔✔adding or subtracting nucleotides
What are the different cells of multicellular organisms? - 🧠 ANSWER ✔✔Body
Cells and Gamete (sex) Cells
3
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
and Answers 100% Guaranteed Success
| Already Rated A+
What does STR stand for? - 🧠 ANSWER ✔✔short tandem repeats
What is the genome of an organism? - 🧠 ANSWER ✔✔The entire genetic material
of an organism (including all of the chromosomes and the mitochondria).
What does PCR stand for? - 🧠 ANSWER ✔✔polymerase chain reaction
protein synthesis - 🧠 ANSWER ✔✔the formation of proteins by using information
contained in DNA and carried by mRNA
What is protein made of? - 🧠 ANSWER ✔✔amino acids
What does tRNA do? - 🧠 ANSWER ✔✔It transfers amino acids to a growing
protein chain on the ribosome.
What does mRNA do? - 🧠 ANSWER ✔✔it passes through the nuclear pores and
goes to the ribosomes to give the codes to make proteins
1
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,What does the A-T and G-C base pairing provide? - 🧠 ANSWER
✔✔complementarity of the two strands and chemical stability to the helix
What are the A-T and G-C base pairs also known as? - 🧠 ANSWER ✔✔Genetic
Code
What is a gene? - 🧠 ANSWER ✔✔segment of DNA that codes for a protein
What is the central dogma of molecular biology? - 🧠 ANSWER ✔✔DNA -> RNA
-> Protein
What does U replace in RNA? - 🧠 ANSWER ✔✔T
A chain of amino acids is called - 🧠 ANSWER ✔✔polypeptide
Mutations are responsible for - 🧠 ANSWER ✔✔the huge diversity in genes
between and among organisms
Mutations - 🧠 ANSWER ✔✔-are random
-happen during DNA replication
-mutagens
What do mutations change? - 🧠 ANSWER ✔✔Mutations change the genetic
information of a cell
2
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, What do mutations do? - 🧠 ANSWER ✔✔They change the sequence of the DNA
bases in a gene which produces a genetic variation.
They sometimes lead to changes in the protein that a gene codes for.
What are mutagens? Give an example. - 🧠 ANSWER ✔✔physical or chemical
agents that can cause mutations.
-Smoking
-UV lights
-Chemicals
Evolution acts on - 🧠 ANSWER ✔✔mutations
point mutation - 🧠 ANSWER ✔✔gene mutation in which a single base pair in
DNA has been changed
Substitution - 🧠 ANSWER ✔✔A mutation in which a nucleotide or a codon in
DNA is replaced with a different nucleotide
insertion or deletion - 🧠 ANSWER ✔✔adding or subtracting nucleotides
What are the different cells of multicellular organisms? - 🧠 ANSWER ✔✔Body
Cells and Gamete (sex) Cells
3
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
