DNA, RNA, Karyotypes & Protein synthesis

How many total pairs of chromosomes are in a human?

• 26 pairs
• 23 pairs
• 20 pairs
• 48 pairs

Which of the following Is correct about the image

• female with trisomy 21 with down syndrome
• male with trisomy 21 with down syndrome
• normal human female with 23 homologous pairs
• monosomy XO with turner syndrome
• male with trisomy 18

A __________ is a picture of your chromosomes arranged from largest to smallest.

• MRI Scan
• Karyotype
• Gene Card
• Chromosome Matrix

Which of the following choices correctly identifies the molecules made during protein synthesis labeled as 1, 3, and 5?

• 1=protein, 3=DNA, 5=mRNA
• 1=DNA, 3=mRNA, 5=protein
• 1=mRNA, 3=protein, 5=DNA

Think about the steps a cell undergoes to make proteins. The first step labeled #2 is called ________ and the second step labeled #4 is called._______

• #2=Transcription and #4=Translation
• #2=Translation, and #4=Transcription
• Both are called transcription
• Both are called translation

In a cell, where does the first step in making a protein occur? (As shown for #6 below.)

• cytoplasm
• golgi apparatus (golgi body)
• nucleus
• ribosome

Every three nucleotides in a codon of mRNA determine the correct sequence of ___________ for a protein.

• DNA nucleotides
• amino acids
• RNA nucleotides
• anticodons

Transcribe this sequence of DNA, "AAA TTT CGC", into mRNA:

• TTT AAA GCG
• TTT UUU GCG
• UUU TTT GCG
• UUU AAA GCG

Translate the mRNA, "UUU AAA GCG" into amino acids.

• Phe - Gly - Arg
• Phe - Lys - Ala
• Ala - Lys - Phe
• Arg - Gly - Phe

Amino acids are building blocks for making a _________

• nucleotide
• protein
• gene
• DNA