Life's Building Blocks
The smallest structural and functional unit of an organism (small units that make up our bodies)
What are cells?
A cell molecule that can be read and copied over 10,000,000,000,000,000
What is DNA?
Cells stop replicating and start dying.
What is one reason we grow old?
A, T, G, and C
What four letters are used to create DNA code called bases on the double helix?
100 trillion
What is the number of tiny cells that make up a human body?
46 Chromosomes
What is the number of chromosomes in a human cell nucleus?
As we get older, the pigment cells in our hair follicles gradually die.
What causes hair to turn grey?
Picks up information coded in the genes
What is the function of RNA?
DNA (deoxyribonucleic acid), RNA (ribonucleic acid), and Proteins
What complex molecules make up a cell??
A cell that is packed with hundreds of millions of hemoglobin molecules.
What are red blood cells?
Compound structures found at the end of each chromosome that becomes shorter after each successive cell division resulting in cell death.
What are telomeres?
RNA transports coded genetic information from the nucleus to this location.
What is the Ribosome?
Cells that have a nucleus and Cells that do not have a nucleus
What are eukaryotic and prokaryotic cells?
Cells that pass information from one neuron to another by electrical impulses.
What are brain cells?
An enzyme found in malignant or cancer cells that prevents cell death by lengthening it telomeres.
What is telomerase?
A single human cell contains two complete copies of these.
What are human genomes?
A cell molecule that can be read and copied over 10,000,000,000,000,000
What is a DNA molecule?
Daily Double
See Image
What is a cell membrane?
Phenomenon where cells appear to be limited to a certain number of divisions before they die
What is the Hayflick limit
A form of programmed cell death.
What is Apoptosis?