Flashcards in Lecture 1 Deck (23):
What it the cell theory?
Cells are the basic unit of life, all living things are made of cells and cells arise from preexisting cells.
What explains the continuity of life?
The molecular basis of inheritance (information required for the functioning of the cell found in DNA)
What is the relationship between the structure and the function?
The function of a macromolecule is the dependent on their structure.
They exist in non equilibrium state (far from the thermodynamic equilibrium) and they are open.
What is the function of enzymes?
They catalyze cellular reactions.
What explains the unity of living systems?
What dictates the expression of genetic information?
maintains the structural integrity of the cell
filled with chromatin, packed DNA.
Darker region of the nucleus, contains the genes necessary for the transcription of rRNA and production of ribosomes
Biological membrane that envelops and contains the nuclear matter
Pores in the nuclear membrane that allow the passage of material from the cytoplasm to the nucleus abd vice-versa.
protein factories of the cell
comprised of the nuclear envelope, endoplasmic reticulum, golgi apparatus, lysozomes, vacuoles and microbodies
ribosomes, site of protein synthesis, site of protein glycosylation
site of carbs, steroid hormone and lipid synthesis
comprised of ind. sacs called cisternae, collect, package, sort and distribute molecules within and outside the cell (moving from cis to trans)
contain disgestive enzymes that can degrade proteins, lipids and carbs at a rapid rate ( used in defense against pathogens)
enzyme bearing membrane bound vesicles (ex. peroxisomes)
what is surrounded by tonoplast?
water exchange and controls tonicity in cell
metabolize sugar to produce ATP