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61 Cards in this Set
- Front
- Back
Cell cycle |
Sequence of events that takes place in between cell divisions |
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Mutation |
Any mistake from the correct DNA sequence |
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Daughter cell |
One cell splits into two new ______ |
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G1 |
Primary growth phase in which the cell doubles in size |
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S |
Synthesis phase in which the DNA is copied |
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G2 |
Secondary growth phase in which the cell makes final preparations for cell division |
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Interphase |
The cell spends most of its time in this, has 3 separate phases |
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Semiconservative replication |
Where two copies are made so that each of the new DNA molecules contain one strand from the original DNA |
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Mitosis |
Division of the nuclear material |
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Spindle apparatus |
Used to move the chromosomes astounds the cell |
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Prophase |
-DNA begins to change from its loose, uncoiled form (chromatin) into chromosomes -the nuclear envelope is disassembled -the spindle apparatus forms |
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Metaphase |
The cell is considered to be in_____when the chromosomes are all lined up along a plane at the center of the cell |
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Equator |
Center of the cell where chromosomes line up during metaphase |
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Anaphase |
Occurs when the Centro centromere regions of the chromosomes divide and chromatids are pulled toward opposite poles of the cell |
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Telophase |
Once the two sets of DNA are separated at opposite poles, the cell enters ___ -chromosomes begin to uncoil into chromatin -nuclear envelopes begin to reform around each set of DNA -the spindle apparatus is disassembled |
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Chromosomes |
DNA that is in tightly coiled structures |
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Chromatin |
Loose and uncoiled DNA |
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Histones |
Proteins that strands of DNA wrap around to prevent tangling |
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Chromatids/ centromere |
A chromosome consists of two identical halves called _____ joined to each other at a region called a ________ |
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Homologous chromosomes |
____ are the same size and shape and contain DNA that code for the same proteins |
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Deoxyribonucleic acid DNA |
The molecule that actually contains the genetic information. |
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Nucleotide |
DNA is made of monomers called _____. These structures contain three basic parts -sugar (deoxyribose) -phosphate group -nitrogen base |
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Deoxyribose |
Sugar found in the nucleotide structure of DNA |
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Codons |
Groups of three nitrogen bases |
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Anticodon |
Group of Three nitrogen bases on tRNA that are complementary to a codon on mRNA |
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Initiation complex |
What is formed when a mRNA molecule, a tRNA molecule, and a ribosome fit together. This allows translation to begin |
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Genetic code |
Correlation between the base sequence in DNA and the amino acid sequence for a particular protein |
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Replication |
The process by which DNA copies itself |
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DNA helicase |
"Unzips" the double helix by breaking hydrogen bonds between complementary nitrogen bases |
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DNA polymerase |
Adds new nucleotides with complementary nitrogen bases to each of the strands |
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Polygenic |
Traits are controlled by more than one pair of genes; such Teairra have a wide variety of phenotypes that exhibit continuous variation from one form to another |
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Universal recipient |
Can receive from any other blood type. AB |
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Universal donor |
O. It can be transfused into any other blood type |
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Phenotype |
Physical expression of a trait |
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Complete dominance |
Occurs when one allele completely masks the effects of another allele when they ate combined in the heterozygous genotype |
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Incomplete dominance |
Occurs when the phenotype of the heterozygote exhibits a blending of the two contrasting traits |
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Codominance |
Occurs when the phenotype of the heterozygote exhibits both contrasting traits equally |
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Multiple allele traits |
_____ are controlled by a single pair of genes in each individual, but there are more than two contrasting forms of the genre in the population |
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Gene |
A segment of DNA that code for a specific polypeptide |
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Alleles |
Alternate forms of a gene |
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Dominant |
The expressed allele is called _____ |
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Recessive |
The allele that is hidden is labeled ____ |
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Homozygous |
A genotype that contains two identical alleles. (TT) _____dominant (tt) ______ recessive |
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Heterozygous |
A genotype with two different alleles (Tt) |
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Genotypes |
The genetic makeup of an organism |
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G0 |
The phase where cells have said to have excited the cell cycle. Some cells grow to maturity but do not immediately divide |
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Cleavage furrow |
Forms when the cell membrane is "pinched" in along the plane of the equator |
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Transcription |
The process in which molecules of RNA ate made using the information in DNA |
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Translation |
The process of using RNA to actually assemble proteins |
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Central dogma |
States that hermetic information flows from DNA to RNA to proteins |
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RNA polymerase |
The enzyme that controls transcription. It "Unzips" the double helix and adds complementary bases to match one of the two DNA stands |
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Promoter |
Region on the DNA that RNA polymerase attaches to during transcription |
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Template |
The DNA strand used to make RNA |
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RNA ribonucleic acid |
The molecule that actually uses the genetic info to directly control protein synthesis |
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Complementary |
When two nitrogen bases pair up to form a bond they are said to be ______ |
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Ribose |
Sugar in RNA |
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Uracil |
The nitrogen base in RNA in place of thymine |
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mRNA |
Contains the info needed to assemble a polypeptide from the DNA in the nucleus to ribosomes in the cytoplasm Linear shape |
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tRNA |
Responsible for bringing individual amino acids from the cytoplasm to the ribosomes where they are incorporated into the growing polypeptide Hairpin or cloverleaf shape |
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rRNA |
Ribosomes are made of a combination of protein and _______. They are assembled by the nucleolus "Globular" shape |
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Double helix |
The molecular structure of DNA is this shape. Because it consists of two linear stands of nucleotides joined to eachother, and it is twisted in a spiral fashion |