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Bio 230 Exam #1 Questions AND ANSWER
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Bio 230 Exam #1 Questions AND ANSWER
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Bio 230 Exam #1A DNA molecule or a carbon atom? - correct answer-DNA molecules are bigger than carbon
atoms
A glucose molecule or an organelle? - correct answer-an organelle is bigger than a glucose
molecule
A virus or a protein molecule? - correct answer-virus is bigger than a protein molecule
Are these bonds weak or strong? - correct answer-weak
Could you draw three molecules of water correctly, including the hydrogen bonds between
the molecules? - correct answer-
Deletion mutations? - correct answer-Deletion: Removal of one or more nucleotides from a
DNA sequence
Does a substitution mutation always change the amino acid sequence of the protein? -
correct answer-Has no affect at all
Does the place in the DNA sequence where the extra nucleotides are inserted matter? Why?
- correct answer-Yes because it causes it to have a frame shift which gives it different
codons
How about an insertion mutation? How about a deletion mutation? Why or why not? - correct
answer-Yes because it causes frame shift
How are HeLa cells different from the cells in your own body right now? - correct
answer-Divide faster, Live longer outside the body, stronger, different genetic makeup, 80
chromosomes
How are prokaryotic and eukaryotic cells different? - correct answer-*Prokaryotic cells come
before the nucleus, usually smaller, single cell, no membrane- bound organelles
*Eukaryotic cells are usually bigger, Has multi-cellular, contains membrane bound organelles
and nucleus
How are Prokaryotic and eukaryotic cells similar - correct answer-genetic material,
membrane, cell, ribosomes
How can small changes in DNA result in big, small, or no changes in the physical
characteristics of a living thing? - correct answer-Can create tumors
How did model building contribute to understanding DNA's structure? - correct answer-It
helped them understand the different bonds
, How did the structure of DNA give scientists insight into its function? - correct answer-It
helped them relate the different nucleotides with each other and differentiate between the
different bonds (ionic, covalent and hydrogen bond)
How did X-Ray crystallography contribute to understanding DNA's structure? - correct
answer-it helped them discover that the DNA structure was a double helix which helped
them understand the bonds
How do proto-oncogene proteins regulate cell division? - correct answer-Proto-Oncogenes
are Normal Genes that make
Normal Proteins that Promote Cell Division
How do tumor suppressor proteins regulate cell division? - correct answer-Tumor
Suppressor Genes are Normal Genes that make Normal Proteins that Inhibit Abnormal Cell
Growth
How does DNA code for RNA? - correct answer-transcription
How does RNA code for protein? - correct answer-translation
How would you determine an unknown specimen to determine if it's living? - correct
answer-*Move
*Transfer energy
*Reproduce
*Grow
*Sense
*Respire/ Exchange Gases
*ExcreteWaste
How would you explain the difference between covalent, ionic, and hydrogen bonds? -
correct answer-=Hydrogen Bonds: When the peanut
butter sandwich (electrons) of the kid sitting
next to you smells good (is attractive). ***WEAK BONDS
=Covalent Bonds: When you and a buddy
share a peanut butter sandwich (electrons)
between the two of you. ***STRONG BOND
=Ionic Bonds: Like when a bully takes your
whole peanut butter sandwich (electrons)...***STRONG BOND
How would you explain to a friend the similarities and differences between DNA, genes,
chromosomes, and genomes? - correct answer-Genomes is all the DNA. The DNA is made
up of chromosomes that contain our parents genes
If a cell were the size of our lecture hall, how would you explain to a friend how big a water
molecule would be? - correct answer-mitochobdria the size of a life rafts, ribosomes the size
of galf balls, Proteins the size of marbles, water molecles the size of poppy seeds.
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