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Biology Pt 4
Biology terms
84
Biology
Undergraduate 3
11/09/2010

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Term
Different versions of a gene
Definition
Allele
Term
Masks or covers up an allele
Definition
Dominant allele
Term
These alleles are covered up
Definition
Recessive allel
Term
This is the combination of alleles a person has
Definition
Genotype
Term
This is the physical appearance of protein function
Definition
Phenotype
Term
both alleles are the same
Definition
Homozygous
Term
both alleles are different
Definition
heterozygous
Term
Heterozygous individuals have the same phenotype as homozygous dominant
Definition
Complete dominance
Term
Heterozygous individuals are a mix of the two homozygous phenotypes
Definition
Incomplete dominance
Term
What do the squares mean on a punnet spuare? circles? when they are filled in?
Definition
Squares means that it is a boy, circles mean that it is a girl, and filled in means that it is the affected individual
Term
If your grandparents are the P generation then who is the F1 generation? F2 generation?
Definition
F1 generation is my parents. F2 generation is me and my brothers and sisters
Term
This is a recessive disease where a thick mucus lines the lungs and is often fatal
Definition
Cystic Fibrosis
Term
This is a recessive disease where the person is born without an immune system and is often fatal. It is cured with gene therapy and stem cells
Definition
SCIDS
Term
This is a recessive disease where the person is born without an uterus and has an x and y chromosome. They end up developing as femaies
Definition
AIS (Androgen Insensitivity Syndrome)
Term
A dominant disease where there is a brain degeneration and is often a fatal disease
Definition
Huntington's disease
Term
Disease where the person is unable to make hemoglobin and is sensitive to light. Has a malformed face, hands, feet, and teeth. Teeth and nails are stained red. Crave red meat. This is where the myth of vampires comes from.
Definition
Cutaneous Porphyria
Term
Where the myth of ware wolves come from. The disease consist of excessive hair growth, deformed teeth, and is dominant.
Definition
Hypertrchosis
Term
What is the difference between complete and incomplete dominance?
Definition
With complete dominance the individual has the same phenotype as homozygous dominant and with incomplete dominance the individual has a mix of 2 homozygous phenotypes
Term
This is a recessive disease where the hemoglobin protein carries oxygen in the blood
Definition
Sickle Cell
Term
How are some genetic diseases being treated?
Definition
With stem cells
Term
What happens during fertilization?
Definition
A haploid egg and haploid sperm fuse to make a diploid zygote
Term
What is the controversy on using stem cells?
Definition
The stem cells come from early embryos and stem cells require cloning so it's an argument of ethics
Term
this type of cell divides and makes one kind of cell
Definition
Specialized cell
Term
Cells that become many types of specialized cells
Definition
Stem cells
Term
Three characteristics of stem cells
Definition
Can become many types, can divide forever, and when they divide they produce 1 specialized cell and 1 stem cell
Term
What do stem cells do in the body?
Definition
They are a source of fresh cells and each tissue has stem cells to refresh the supply of cells
Term
What are four steps scientist use to cultivate stem cells?
Definition
Obtain the stem cell from the adult tissue or blastocyst, grow them into cultures, add growth factors, and insert specialized cells into patient
Term
What are stem cells used for?
Definition
Cures diseases, replaces damaged or mutated cells, and some diseases are near a treatment
Term
This type of stem cell is limited in the type of specialized cell they can make, is harder to harvest, cost more, available throughout life, and has a less chance of rejection
Definition
Adult stem cells
Term
This type of stem cell is not limited in the type of cells they can make, easy to harvest, cost less, available for limited of time, has less of a chance of mutation, more controversial, and more likely to be rejected
Definition
Embryonic stem cells
Term
This is a protein that sits on a promoter and blocks transcription
Definition
Repressor
Term
This is necessary for transcription and for an enzyme to bind to a promoter and removes a repressor from a promoter
Definition
Enhancer
Term
Three differences between mRNA and DNA
Definition
mRNA= single stranded, makes ribose, and consist of A,C,G, U and DNA= double stranded, makes deoxyribose, and consist of A,T,C, G
Term
Where does transcription occur in the cell
Definition
Nucleus
Term
Where does translation occur in the cells
Definition
On the ribosomes outside of the nucleus
Term
Where do the proteins come from used in DNA and mRNA?
Definition
Genes
Term
What is a restriction enzyme? How is it used in Recombinant DNA?
Definition
Protein made by bacteria. It cuts the plasmid in the Recombinant DNA process
Term
What is Recombinant DNA technology? What are the steps?
Definition
A process used to make GMO's. First the gene is isolated. Next the restriction enzyme cuts the plasmid. Then the gene is fused with the plasmid. Lastly the organism is transformed with Recombinant DNA
Term
Rings of DNA found in bacteria
Definition
Plasmid
Term
Recombinant of DNA that never existed
Definition
Recombinant DNA
Term
Organism with foreign genes inserted into their sequence
Definition
GMO's
Term
This process involves inserting foreign DNA into the cells so the organism will have a new gene, protein, and function
Definition
Transforming
Term
Why do we have genetically modified plants, bacteria, and animals?
Definition
Bacteria has an oil eating enzyme for oil spills, they make hormones, and vaccines. Plants are given resistance to heat/cold, drought/flood, pest, herbicides, and toxins. Pigs are given a spinach gene to produce healthier fat, Glofish detect pollution, and Bull produce medicine in milk
Term
Toxin-tolerant organisms to clean up pollution
Definition
Bioremediation
Term
Controversy behind GMO's?
Definition
They are a possible source of allergies, crossing of crops, killing non-target species, loss of genetic diversity, and Big Agro companies controlling economic and political decisions
Term
Why do some cells undergo meoisis?
Definition
To make gametes and increase diversity
Term
What is the difference between diploid and haploid?
Definition
Diploid makes two copies of a chromosome while haploid makes one copy of a chromosome
Term
What type of cells are produced from the diploid cell during meiosis and how many are made?
Definition
4 haploid cells
Term
Difference between mitosis and meiosis?
Definition
DNa replication is the same but meiosis has a 1st cell division and 2nd cell division
Term
What are the steps of meiosis?
Definition
DNA replication, 1st cell division which requires crossing over and random assortment, and the 2nd cell division where the sister chromatids separate into 4 haploid chromosomes
Term
two ways variation is added to life
Definition
Crossing over and random assortment which both occur in first cell division
Term
Each gamete gets 1 homologous chromosome and which one they get is random...this process is known as ...
Definition
Random Assortment
Term
DNA sections are exchanged by homologous chromosomes
Definition
Crossing over
Term
What are the 4 purposes of meiosis ?
Definition
Cell division to make gametes, reduce the chromosome number from diploid to haploid, increase diversity, and used in fertilization
Term
Vast majority and primary stem cells
Definition
Adult stem cells
Term
Can make any kind of cell and blastocyst is the early source of it
Definition
Embryonic stem cell
Term
What type of cloning has been outlawed
Definition
Reproductive
Term
How was Dolly made?
Definition
Took diploid somatic skin cell and haploid egg cell, take the nucleus out of the egg cell, fuse the de-nucleated egg cell and the somatic skin cell, embryo is produced and placed in surrogate mother
Term
DNA from a diseased egg is transferred into a healthy egg that's had its DNA removed
Definition
Gametic Cell Nuclear Transfer
Term
Benefits of cloning?
Definition
Cheap way to copy inexpensive GMO's, revive endangered or extinct species, and making copies of prized animals
Term
Birth of a new individual with cloning
Definition
Reproductive cloning
Term
Harvest stem cells from the clone instead of inserting in surrogate mother
Definition
Therapeutic cloning
Term
A nervous stimulant
Definition
Caffeine
Term
What are the ways caffeine works in the human body?
Definition
Increases dopamine, speeds up movements and impulses, increases physical performance, decreases drowsiness, and increases seratonin levels and improves mood
Term
What are some side effects of caffeine?
Definition
Muscle twitching, nervousness, anxiety and heart palpitations
Term
What are some sources of caffeine?
Definition
Redbull, chocolate, coffee
Term
Why is combining alcohol and caffeine dangerous?
Definition
Can cause alcohol poisoning, heart damage, caffeine keeps you awake, and doesn't lessen alcohol effects
Term
Where do we get herbal remedies?
Definition
Plants
Term
Are herbal remedies and substances used in modern science?
Definition
Yes
Term
Are herbal remedies safer than over the counter prescriptions?
Definition
No
Term
Did Amendment 2 pass?
Definition
Yes
Term
Is it illegal to use ESC in MO?
Definition
Yes it is illegal to isolate them, but not research them
Term
From who is it illegal to obtain ESC? Is it illegal to use them?
Definition
Anyone professors and researcher at an University funded by the government. It is illegal to use them
Term
How do identical twins compare to clones
Definition
Identical twins will be more similar to their DNA donor than a clone. They are usually the same age, raised in the same environment, with similar nutrition
Term
If you were cloned today, how would your clone compare to you in age, DNA/genes, memories, physical appearance, and personality?
Definition
The clone would be younger since they are just born, they would have identical DNA and genes, the clone creates its own memories, the clone would appear physically identical except for where the environment plays a role
Term
If the protein sequence changes does the DNA sequence change
Definition
It may change, but a mutation will cause the same amino acid to be put in place so that all is good and the protein will not change
Term
Which has the fewest monomers out of a DNA chain, RNA strand, and protein?
Definition
Protein
Term
The SRY gene signals for the formation of what organ?
Definition
The testis
Term
A group of diploid cells just landed and embedded in the mother's uterus. At this stage, what is this mass of cells called?
Definition
A blastocyst
Term
What organ starts functioning the earliest within the developing child?
Definition
Heart
Term
What hair-like structures help the placenta function by grabbing oxygen and other nutrients from the mother's blood?
Definition
Villi
Term
How do identical twins form?
Definition
A zygote splits
Term
Carries oxygen from the lungs to the rest of they body
Definition
hemoglobin
Term
moves muscle fiber
Definition
Actin and myosin
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