Term
| what is all the genetic info. in a cell called and where is it contained? |
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Definition
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Term
| what do chromosomes contain and what are they? |
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Definition
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Term
| T/F: Bacterial chromosome(s) is a singular circular strand of DNA |
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Definition
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Term
| Where are bacterial chromosomes in the cell and why? |
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Definition
| nucleoid region, b/c theres no nuclear membrane |
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Term
| T/F Bacterial chromosomes are associated with histone proteins |
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Definition
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Term
| describe the bacterial chromosome |
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Definition
- Singular circular stand of DNA
- Only one per cell (haploid # of chromosomes)
- Contained in the nucleoid b.c of lack of nuclear membrane
- Not associated with histone proteins
- Extrachromosomal pieces of DNA is found in the cell's plasmids
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Term
| extrachromosomal pieces of DNA in a prokaryotic cell is found in the ____ |
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Definition
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Term
| Do eukaryotic cells have diploid or haploid number of chromosomes? |
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Definition
Both
ie: sperm cell (23) is a haploid
a body cell (46) is a diploid |
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Term
| T/F: Eukaryotic chromosomes exist in circular molecules of DNA |
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Definition
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Term
| where is a eukaryotic cell's chromosomes present and where else can they be found? |
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Definition
| nucleus, mitochondria and chloroplasts |
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Term
| T/F: Eukaryotic chromosomes exist in pairs |
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Definition
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Term
| Describe eukaryotic chromosomes |
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Definition
- Exist in pairs
- Have a # of diploid or haploid of chromosomes
- Exist ion linear molecules of DNA
- Associated with histones
- Extrachromosomal DNA can b found in mitochondria and chloroplasts
- Present in nucleus which is enveloped in a nuclear membrane that contains pores
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Term
| Is DNA supercoiled and tightly packed in eukaryotes or prokaryotes? |
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Definition
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Term
| ________ DNA is much longer (at least 10X) |
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Definition
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Term
| T/F: DNA is a micromolecule |
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Definition
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Term
| T/F: The inherited nature of DNA is found in order of sequence of the nucleotides |
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Definition
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Term
| DNA is composed of monomer units called ____ that make up nucleic acids |
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Definition
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Term
| What are the 3 parts that make up nucleotides |
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Definition
- Phosphate group
- Sugar (deoxyribose)
- Nitrogenous base
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Term
| What are the nitrogenous bases of DNA? |
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Definition
Adenine - Thymine
Guanine - Cytosine |
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Term
| What dictates the complimentary arrangement of of DNA nitrogenous bases? |
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Definition
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Term
| DNA nitrogenous bases pairing rule |
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Definition
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Term
| DNA exist in the shape of a twisted ladder known as _______ discovered by _________ and ________ |
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Definition
| double helix, watson, crick |
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