Cell Structure Flashcards
Cytoplasm or Cytosl
Fluid that surrounds all organelles
Mostly made up of water
(Cells are 75-90 water)
Jelly-like substance that fills the cell
Ribosomes
Where amino acids are made into proteins
Can be loose in the cytoplasm or rough E.R.
Makes ribosomes
Site of protein synthesis.
Structures for movement
Pseudopodia-false foot
Cilia (hairlike structures)
Cytoskeleton
Made of protein filaments
Maintains cell shape
The cytoskeleton is made up of micro tubules and filaments. It’s typically not depicted in cell diagrams but is the structural beams and support of the cell
Chromosomes
Typically eukaryotic cells (cells with nuclei) have large linear chromosomes and prokaryotic cells (cells without defined nuclei) have smaller circular chromosomes
Chromosomes are threadlike structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of DNA. Passed from parent to offspring, DNA contains the specific instructions that make each type of living creature unique
Nucleus
Control center of the cell
How his DNA, which is the template for making proteins
The brain
-NUCLEAR ENVELOPE
The nuclear membrane has many small holes called nuclear pours Bella material to move in and out of the nucleus
Contains the cells’ DNA and instructions for making proteins.
Nucleolus
The nucleolus is around body located inside of the nucleus of a eukaryotic cell. It is not surrounded by membrane, but stays in the nucleus. The nucleolus makes ribosomal subunits from proteins and ribosomal RNA
Endoplasmic reticulum
Smooth E.R.- assemble/makes lipids
Detoxifies drugs and alcohols for the body and makes lipids
Rough E.R.-changes proteins made on ribosomes (where proteins are made)
Covered with ribosomes
Golgi body/apparatus
Proteins from rough ER then go to the Golgi body
Further modify proteins and send to the final destination
Modifies, sorts and packages proteins
Vesicles
Wanna sell needs to move a molecule many times, it uses vessels. Vessels are cellular organelles that are composed of a lipid bilayer. You can think of vessels as cellular envelopes that are used to transport materials from one place to another. Vessels also function of metabolism and enzyme storage as well
Mitochondria
Converts carbohydrates and lipids into cellular energy
Kidney be in shape with many inner folds. CELLULAR RESPIRATION
Makes usable energy for the cell
Organelles only found in plants
Cell wall (bacteria have cell walls made of chitin not cellulose)
Chloroplasts- performs photosynthesis, convert sunlight into glucose. Then glucose in the cell energy. Green color
Vacuoles- really found an animal cells often called vesicles, often single and large, store water and starch
TYPICAL PLANT CELL
Has cell wall, chloroplasts, vacuoles
Rarely has lysosomes
Square shape
Lysosomes (animal and sometimes plants)
Filled with digestive enzymes
Break down molecules for cell food
Breakdown old organelles
Lysosomes digest food particles brought in during endocytosis as well as breakdown dead organelles and waste
Digests and breaks down old and useless organelles
Centrioles (found in some lower plant species)
They spin out of the spindle fibers that aid in division of chromosomes during mitosis
centrioles split up the cell
Typical animal cell
No cell wall, chloroplast, and a few vacuoles
Has lysosomes, centrioles
Many different shapes