DNA
DNA Replication
RNA
Cell Cycle
DNA or RNA?
100
What type of organic compound is DNA?
Nucleic acid
100
Where in the cell does DNA replication take place?
in the nucleus of eukaryotic cells; in the cytoplasm of prokaryotic cells
100
What is RNA?
Ribonucleic acid: a single-stranded nucleic acid made up of monomers called nucleotides
100
Why is it important that an exact copy of the original DNA is made before mitosis?
to prevent errors from occurring
100
Sugar is ribose.
RNA
200
What is the monomer of DNA?
Nucleotide
200
When in the cell's life cycle does DNA replication take place?
during the "S" phase of Interphase
200
What are the rules for base pairing?
Cytosine pairs with Guanine. (same as DNA) Adenine pairs with Uracil. (In DNA, there's Thymine instead of Uracil)
200
Why do cells undergo cell division?
1. TOO BIG!! (surface area to volume ratio is small; inefficient osmosis & diffusion) 2. to replace damaged or dead cells 3. for growth and development (embryo)
200
Uracil is present.
RNA
300
Why do we have DNA?
It provides the basis for proteins to be made.
300
What enzymes are used in DNA replication?
helicase: unzips the DNA DNA polymerase: puts everything together ligase: re-zips the DNA primase: lays down the first few to start
300
What does RNA do?
1. carries DNA's message code 2. helps make protein
300
Why do chromosomes appear as "X" shaped structures during the early part of mitosis, but not at the end?
The "X" shaped structures are sister chromatids formed in Prophase. During Interphase, they are pulled apart.
300
composed of nucleotides
both DNA & RNA
400
For what does DNA code?
DNA makes the blueprint for the functions of each cell.
400
What would happened if a mistake occurred during replication?
Cell doesn't grow and divide normally.
400
What are the three types of RNA?
1. messenger RNA (mRNA) 2. transfer RNA (tRNA) 3. ribosomal RNA (rRNA)
400
Genetically how do the daughter cells that result from cell division compare to the parent cell?
They are identical.
400
template for synthesis of proteins
DNA
500
What makes you look the way you do: DNA or proteins?
Proteins determine many aspects of how a person physically appears, and proteins rely on DNA to hold the genetic info... so actually I have no idea and if you get this question please comment the correct answer on the G classroom so I can change it :) THANKS
500
Why is the newly formed DNA strand called semi-conservative?
When a copy of DNA is made, half of the old strand is kept in the new strand so that copy errors are not as likely to occur.
500
Where is RNA located in comparison to DNA?
While DNA is found in the nucleus, RNA is located in the cytoplasm.
500
Normal human somatic (body) cells contain 46 chromosomes. At the end of cytokinesis, how many chromosomes will be found in each daughter cell?
46 chromosomes will be found in each daughter cell. In cytokinesis, cell division is completed by dividing the cytoplasm, and identical cells are formed.
500
more than 1 type
RNA: mRNA, tRNA, rRNA
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