CELL STRUCTURE Flashcards
what are organelles?
small membrane bound structures
what is a eukaryotic cell?
any organism consisting of one or more cells containing DNA in a membrane bound nucleus
what is the nucleus?
contains genetic material and is surrounded by a double membrane called the nuclear envelope
what is the cell membrane?
it surrounds the cell, controlling what enters and exits the cell
what is the cell wall?
a wall surrounding the cell supporting it and holding its shape
what is the mitochondria?
a organelle that is the site or aerobic respiration and produces ATP for the cell
what are chloroplasts?
they’re organelles that contain chlorophyll and are the site of photosynthesis
where can you find 80S ribosomes?
eukaryotes
where can you find 70S ribosomes?
prokaryotes
mitochondria
chloroplasts
what is the rough endoplasmic reticulum?
an organelle that produces proteins and are covered in ribosomes
what is the smooth endoplasmic reticulum?
an organelle involved in the synthesis of lipids and have no ribosomes
what is the golgi apparatus?
an organelle that modifies and packages proteins
what are centrioles?
organelles that organize the spindle fibers during cell division
what are cilia?
hair like projectors that allow the movement of substances over the cell surface
what is a prokaryotic cell?
any organism with DNA suspended in the cytoplasm. they lack the nucleus and most organelles