Cells Flashcards
what is a multicellular organism
organisms made of multiple cells
what is a unicellular organism
organisms made up of only one cell for example yeast
what is the function of the cell membrane
controls what enters and exits the cell through a selectively permeable membrane
what is the function of the cytoplasm
the site where most of the cells and chemical reactions take place
what is the cell wall
a organelle providing rigidity and structure to the cell
what is the mitochondria
membrane bound organelles that are the site of cellular respiration
what are the chloroplasts
organelles containing chlorophyll, a pigment that absorbs light for photosynthesis in plants
what is a vacuole
a space in a cell filled with dissolved substances surrounded by a semi permeable membrane
what is a vacuole
a space in a cell filled with dissolved substances surrounded by a semi permeable membrane
name 4 organelles that animal and plant cells have in common
both have a
-nucleus
-cell membrane
-mitochondria
-cytoplasm
what is the difference between vacuoles in animal cells and plant cells
-animal cells have small, temporary vacuoles
-plants have large, permanent vacuoles
name two organelles that only plant cells have
cell wall made of cellulose
chloroplasts for photosynthesis
name 3 specialised animal cells
muscle cells, sperm cells, nerve cells
name 3 specialised plant cells
root hair cells, phloem cells, xylem cells
explain how the following animal cells are specialised :
-nerve cell
-sperm cell
-red blood cell
-muscle cell
-nerve cells are able to transmit electrical signals from the brain to the body
-sperm cells have a flagellum to swim and fuse to the egg
-red blood cells have haemoglobin and high surface area to transport oxygen
-muscle cells have many mitochondria for energy for movement
