2023 - 2024 Holt Biology Final Exam
GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved)
What are the monomers (subunits) of DNA?
Answer: nucleotides
What are the 3 part that make up the monomer?
Answer: 5 carbon sugar, phosphate group, nitrogen base
What are the base pairing rules (Chargaff's rules)?
Answer: A & T and C & G
Given the DNA strand- TCACGGTAC. What is the sequence of the comple mentary DNA strand?
Answer: AGTGCCATG
What role do the helicase and DNA polymerase play in DNA replication?-
Answer: Helicase=unwinds and separates the 2 DNA strands
DNA polymerase= moves along each of the template strands, and attaches complementary free-floating nucleotides and also proofreads each new DNA strand.
What are the products of DNA replication?
Answer: It results in two exact copies of the original DNA
molecule. Each new DNA molecule consists of one original ("old") strand and one "new" strand
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What is the purpose of the cell cycle(mitosis)?
Answer: Growth and repair
In the cell cycle (mitosis), how does the number of chromosomes in the parent cells compare to the number of chromosomes in the daughter cells?
Answer: They are the same
How do cancer cells differ from normal cells?
Answer: Cancer cells divide continu ously
Difference between DNA and RNA
Answer: DNA Stores genetic information
- strands
Sugar is deoxyribose Nitrogen bases are A, T, C, G
RNA Helps to make proteins 1 strand Sugar is ribose Nitrogen bases are A, U, C, G
What is a gene?
Answer: A segment of DNA that codes for a protein.
How are genes and proteins related?
Answer: Genes contain the code to make proteins.
Transcription
Answer: DNA instructions "rewritten" in RNA (mRNA)
language Location – Nucleus
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