Biotech Flashcards
Cell structures (27 cards)
A thin semipermeable membrane layer of protein and fats surrounding the cell. Its primary role is to protect the cell from its surrounding
Cell Membrane
It is a double-membrane structure that surrounds the nucleus.
Nuclear membrane
It is an organelle that contains several other sub-organelles such as nucleolus, nucleosomes and chromatins. It also contains DNA and other genetic materials.
Nucleus
It is a small organelle found near to the nucleus which has a thick centre with radiating tubules.
Centrosomes
Where microtubules are produced
Centrosomes
it controls the entry and exit of nutrients and other microscopic entities into the cell.
Cell membrane
Referred to as the nucleus envelope
Nuclear membrane
They are round organelles surrounded by a membrane and comprising digestive enzymes which help in digestion, excretion and in the cell renewal process.
Lysosome
Another name for lysosome
Cell vesicles
A jelly-like material which contains all the cell organelles, enclosed within the cell membrane.
Cytoplasm
What is the substance found within in the cell nucleus and is contained by the nuclear membrane called?
Nucleoplasm
A flat, smooth layered, sac-like organelle which is located near the nucleus and involved in manufacturing, storing, packing and transporting the particles throughout the cell.
Golgi appartus
They are spherical or rod-shaped organelles with a double membrane. They are the powerhouse of a cell as they play an important role in releasing energy.
Mitochondrion
They are small organelles made up of RNA-rich cytoplasmic granules, and they are the sites of protein synthesis.
Ribosome
This cellular organelle is composed of a thin, winding network of membranous sacs originating from the nucleus.
Endoplasmic Reticulum
A membrane-bound organelle present inside a cell involved in maintaining shape and storing water, food, wastes, etc.
Vacuole
What is the main function of a cell wall?
To provide structural support
What is the cell wall composed of?
Cellulose, glycoprotein, lignin, pectin, and hemicellulose
The formation of the cell wall is guided by what?
Microtubules
What are the layers of the cell wall
Primary, secound, middle lamella
The nucleus is a structure bound cell that is only present in what type of cells
Eukaryotic
It manufactures cell protein-producing structures and ribosomes.
Nucleolus
They are membrane-bound organelles that have their own DNA. They are necessary to store starch, to cary out the process of photosynthesis.
Plastids
Nuclear membrane is perforated with holes called______that allows proteins and nucleic acids to pass through.
Nucleopore
