Part 1 Flashcards
Cell cycles, division and organelles
What is the major distinction between prokaryotes and eukaryotes?
Prokaryotes don’t have membrane-bound organelles
What organelles do prokaryotes and eukaryotes both have?
DNA, cellular membrane, cytoplasm and ribosomes
What about water makes it such an important substance?
It’s intermolecular hydrogen bonds
What are the four main groups of macromolecules?
Proteins, Carbohydrates, Nucleic Acid and Lipids
What is the polymer made from amino acids?
Protein
What is the polymer made from monosaccharides?
Carbohydrates
What is the polymer made from nucleotides?
Nucleic Acid
What is the macromolecule made of hydrocarbons, fatty acids and glycerol?
Lipids
What are the three main types of lipids?
Triglycerides, Phospholipids, and Steroids
What type of membrane transport is used for small, non polar molecules?
Simple Diffusion
What type of membrane transport is used for large, polar molecules?
Facilitated Diffusion
What type of membrane transport is used for molecules going across the concentration gradient?
Active Transport
What type of transport requires energy?
Active Transport
What type of transport doesn’t require energy?
Passive Transport
What organelle is a key player in both endocytosis and exocytosis?
Vesicles
What is the difference between endocytosis and exocytosis?
Endo = brings in
Exo = removes
What are the three types of endocytosis?
Phagocytosis (cell eating), Pinocytosis (cell drinking) and Receptor-Mediated (specific, receptors)
What is the function of ribosomes in the cell?
Protein synthesis
What is the difference between the smooth and rough endoplasmic reticulum?
sER produces hormones and lipids
rER has attached ribosomes and makes proteins
What is the function of the mitochondria in the cell?
Site of cellular respiration, makes ATP, powerhouse of cell
What is the function of the cell membrane?
Regulates what enters and exits cell
What is the function of a cell wall?
Gives the cell shape and structure
What is the function of a vacuole?
stores water and waste
What is the function of lysosomes?
‘garbage disposals’, break down macromolecules to be reused