The 8 characteristics of life
1. All life is made up of at least one cell
2. All life has to eat
3. All life has to grow and increase in biomass
4. All life reproduces
5. All life responds to environmental stimuli
6. All life has to adapt and evolve to survive
7. All life has to maintain internal and external homeostasis
8. All life ends
2. All life has to eat
3. All life has to grow and increase in biomass
4. All life reproduces
5. All life responds to environmental stimuli
6. All life has to adapt and evolve to survive
7. All life has to maintain internal and external homeostasis
8. All life ends
The 4 molecules of life and their functions
1. Carbohydrates
2. Lipids
3. Proteins
4. Nucleic acids
1. Carbohydrates
Function- provides short term energy for cells and their structure
Types- (mono, di, poly) saccharides.
example of a monosaccharide= glucose;a single unit of sugar in a single hexagonal shape
example of a disaccharide=sucrose; 2 side by side hexagonal shapes
example of polysaccharide=glycogen; multiple hexagonal shapes side by side
2. Lipids
3. Proteins
4. Nucleic acids
1. Carbohydrates
Function- provides short term energy for cells and their structure
Types- (mono, di, poly) saccharides.
example of a monosaccharide= glucose;a single unit of sugar in a single hexagonal shape
example of a disaccharide=sucrose; 2 side by side hexagonal shapes
example of polysaccharide=glycogen; multiple hexagonal shapes side by side
2. Lipids
Triglycerides- long term energy storage
Steroids- hormones
Phospholipids- used to make cell membranes
Triglycerides ex=body fat Steroids ex=testosterone Phospholipids ex=in cell membarane
Triglycerides- long term energy storage
Steroids- hormones
Phospholipids- used to make cell membranes
Triglycerides ex=body fat Steroids ex=testosterone Phospholipids ex=in cell membarane
3. Proteins
Function-to provide support and structure; made of amino acid chains folded specifically
Types- the difference between proteins is contingent upon the sequence and folded patterns of the amino acids: alpha helix, beta pleated sheets.
Example- hemoglobin
Function-to provide support and structure; made of amino acid chains folded specifically
Types- the difference between proteins is contingent upon the sequence and folded patterns of the amino acids: alpha helix, beta pleated sheets.
Example- hemoglobin
4. Nucleic acids
Types- DNA (double stranded) and RNA (single stranded) made up of small molecules called nucleotides (atgcu)
DNA- contains the instructions needed for an organism to develop
RNA- helps the DNA make proteins, consists of three types.
1. messenger (mRNA)
2. transfer (tRNA)
3. ribosomal (rRNA)
DNA RNA
Types- DNA (double stranded) and RNA (single stranded) made up of small molecules called nucleotides (atgcu)
DNA- contains the instructions needed for an organism to develop
RNA- helps the DNA make proteins, consists of three types.
1. messenger (mRNA)
2. transfer (tRNA)
3. ribosomal (rRNA)
DNA RNA