DNA And Heart Flashcards
Ventricle
Bottom chambers of the heart. The ventricles receive blood from the heart’s upper chambers (atria) and pump it to the rest of the body. The right ventricle pumps blood to the lungs
How does the heart function
Deoxygenated blood from the body enters the right atrium and vena cava.
The deoxygenated blood is then pumped out to the lungs by the pulmonary artery and other arteries. After being oxygenated, the blood is pumped back to the heart by the veins. The blood enters the pulmonary vein and left atrium. Blood is pumped out of the aorta to go to the rest of the body
Alleles
Different versions of the same genes
Phenotype
Physical features that you can see
Genotype
The genes that make up the phenotype
Meiosis
A type of cell division that occurs in order to create 4 new haploid sex cells.
Genome
The term used to describe the entire set of DNA instructions found in a cell
What are biotic factors
The living factors of the ecosystem e.g disease, predation, competition, food
What are abiotic factors
The non-living factors within a ecosystem e.g. Temperature, Light intensity, Water ,Soil pH
How does meiosis work?
The parent cell has chromosomes that soon make identical copies of themselves. The copies pair up with with others that are similar to themselves. The spindle fibers swap sections of their DNA. The cell divides and the chromosome pairs separate forming two cells. The second division happens between the two cells forming 4 identical haploid cells
Arteries
blood vessels that take oxygenated blood away from the heart to the rest of the body
Veins
blood vessels that takes deoxygenated blood back to the heart
Structure of DNA
Double helix made up of nucleotides which are made up of a base, sugar and phosphate
Adenine-Thymine
Cytosine-Guanine
