BIO 100 STUDY GUIDE EXAM 4 2025
QUESTIONS AND ANSWERS
What does C stand for? - ....ANSWER ...-Cytosine
What does G stand for? - ....ANSWER ...-Guanine
What does T stand for? - ....ANSWER ...-Thymine
What does A stand for? - ....ANSWER ...-Adenine
What does Thymine and Cytosine have in common? Why? - ....ANSWER ...-
Thymine and Cytosine are both pyrimidines because they have a single ring
structure (carbon rings)
What does Adenine and Guanine have in common? Why? - ....ANSWER ...-
Adenine and Guanine are both purines because they have a double right structure
(carbon rings)
What does the 3' and 5' represent? - ....ANSWER ...-The number of carbons
on the sugar
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, What does U stand for? - ....ANSWER ...-Uracil
Are RNA sugars ribose or deoxyribose? - ....ANSWER ...-Ribose
Can DNA be single stranded? - ....ANSWER ...-Yes
Are RNA molecules used to make proteins double or single stranded? -
....ANSWER ...-Single stranded
Who created the X-shaped image proving that DNA is a helical structure? -
....ANSWER ...-Rosalind Franklin
Who were the people who "discovered" the structure of DNA? -
....ANSWER ...-James Watson and Francis Crick (discovered in 1953)
What is a chromatin? - ....ANSWER ...-Uncondensed DNA
What is the part where 2 strands connect - ....ANSWER ...-The centromere
What is the location of a specific gene - ....ANSWER ...-Locus
What is semi-conservative replication? - ....ANSWER ...-When new DNA
molecules have parts of the original DNA and a new strand
What is the bottom strand called, and why is it non-continuous? -
....ANSWER ...-It is called the "lagging strand" because the DNA
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
QUESTIONS AND ANSWERS
What does C stand for? - ....ANSWER ...-Cytosine
What does G stand for? - ....ANSWER ...-Guanine
What does T stand for? - ....ANSWER ...-Thymine
What does A stand for? - ....ANSWER ...-Adenine
What does Thymine and Cytosine have in common? Why? - ....ANSWER ...-
Thymine and Cytosine are both pyrimidines because they have a single ring
structure (carbon rings)
What does Adenine and Guanine have in common? Why? - ....ANSWER ...-
Adenine and Guanine are both purines because they have a double right structure
(carbon rings)
What does the 3' and 5' represent? - ....ANSWER ...-The number of carbons
on the sugar
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, What does U stand for? - ....ANSWER ...-Uracil
Are RNA sugars ribose or deoxyribose? - ....ANSWER ...-Ribose
Can DNA be single stranded? - ....ANSWER ...-Yes
Are RNA molecules used to make proteins double or single stranded? -
....ANSWER ...-Single stranded
Who created the X-shaped image proving that DNA is a helical structure? -
....ANSWER ...-Rosalind Franklin
Who were the people who "discovered" the structure of DNA? -
....ANSWER ...-James Watson and Francis Crick (discovered in 1953)
What is a chromatin? - ....ANSWER ...-Uncondensed DNA
What is the part where 2 strands connect - ....ANSWER ...-The centromere
What is the location of a specific gene - ....ANSWER ...-Locus
What is semi-conservative replication? - ....ANSWER ...-When new DNA
molecules have parts of the original DNA and a new strand
What is the bottom strand called, and why is it non-continuous? -
....ANSWER ...-It is called the "lagging strand" because the DNA
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
