Chapter 12 Review

According to the base pair rules, which answer shows the correct pairings of the nitrogenous bases?

• adenine = guanine, thymine= cytosine (A=G, T=C)

• thymine = guanine, adenine= cytosine (T=G, A=C)

• phosphorus=adenine, cytosine=guanine (P=A, C=G)

• adenine=thymine, cytosine=guanine (A=T, C=G)

DNA replication results in two DNA molecules

• each with two new strands.

• one with two new strands and the other with two original strands.

• each with one new strand and one original strand.

• each with two original strands.

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases

• TCGAAC

• GATCCA

• AGCTTG

• GAUCCA

In eukaryotes, DNA

• is located in the nucleus.

• floats freely in the cytoplasm.

• is located in the ribosomes.

• is circular.

What is the name of the principal enzyme in DNA replication?

• Histones

• DNA telomerase

• Nucleosomes

• DNA Polymerase

Tags

NGSS.MS-LS3-1

In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?

• 1

• 2

• 3

• 4

What are the PRODUCTS of the chemical reaction pictured?

• CH₄ and CO₂

• CH₄ and O₂

• CO₂ and H₂O

• O₂ and H₂O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of reaction involves the breaking down of a substance into simpler substances?

• Single Displacement Reaction

• Double Displacement Reaction

• Synthesis Reaction

• Decomposition Reaction

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

CH₄ + 2 O₂ → CO₂ + 2H₂O
 In this equation, CH₄ is a

• product

• reactant

• displacement

Tags

NGSS.MS-PS1-5