Cells Flashcards
What term describes the movement of solvent molecules through a selectively permeable membrane, from an area of high water potential (low solute concentration) to an area of low water potential (high solute concentration)?
Osmosis.
Osmosis is the process by which water diffuses across a membrane to balance solute concentrations on either side, ensuring equilibrium.
Describe what is channels in a facilitated diffusion
molecules are moved across the membrane through a protein, without using energy. They are constant(Leak) to specific molecules and gated
which are proteins within the cell membrane, and are involved in carrier-mediated transport mechanisms, which move large, water-soluble molecules or electrically charged ions
across the cell membrane.
Carriers
What is nucleolus?
a spherical structure found in the cell’s nucleus whose primary function is to produce and assemble the cell’s ribosomes.
How many pairs of chromosomes we have?
23 and 23rd is the sex cells
_________ inside the nucleolus
ribosomes synthesis
organelles where proteins are produced
Ribosomes
Synthesis of ribosomes
Nucleosomes
It collects, modifies, package distributes protein and lipids manufactured by the ER(Endoplasmic reticulum)
Golgi Apparatus/Bodies (post office
Describe what is the Cis face and what is the Trans face
Cis face - facing the ER(anterior
- receiving
Trans face - facing away from the ER
Trans is ______ which is a
Secretory vesicle (exocytosis)
It destroy bacteria in digestive system
Lysosomes
Lysosomes and Peroxisomes breaks down different molecules
Lysosomes, the cell’s recycling centers, use acid hydrolases to break down waste into reusable parts through autophagy and crinophagy. Peroxisomes protect cells by isolating and breaking down harmful hydrogen peroxide into water and oxygen.
self destruction pag may abnormality
Autophagy
TRUE OR FALSE: Cells with a large energy requirement have more mitochondria
TRUE
