BIOLOGY Flashcards
How are new cells made
the division of cells
what are differences between plant and animal cells
plant cells contain a cell wall a large vacule and cholorplast
what are the differences between bacteria cells and plant and animal cells
Bacteria does not have a nucleus and its DNA is circular they also don’t have mitochondrias
what’s the difference between a cell wall and a cell membrane
a cell membrane is partially permeable and and a cell wall is fully permiable
what is a plasmid
small circles of Dna in bacteria cells
what are ribsomes
site of protein synthesis in the cell
What does the mitocondria do
realizes energy from glucose and other nutrients through aerobic respiration
what are chloroplasts
the site of photosyths
what is diffusion
the net movement of molecules down the concentration gradient as a result of random movement
does temperature effect the rate of diffusion
yes because it increases the kinetic energy in the particles
what do we call water diffusing through partially permeable membranes?
osmosis
how do plant cells and animals cells react when placed in pure water
Animal cells burst but plant cells with their cell walls wont
what is active transport
the movement of particles across the cell membrane using energy from respiration
what do protein carries do
they change shape to move substances across the cell membrane during active transport
what elements are carbohydrates made of
C, H,O
what organisms are starch found in?
sugars linked together in plants
what is glycogen
glucose molecules linked in chains in a dormant storage way
what is cellulose
a type of fiber that makes up cell walls
what is glucose
the main type of sugar in the blood used for energy in the cells
what are the elements that make up fats and Oils
C, H,O
what is a lipid molecule made of
three fatty acid molecules and one glycerol molecule
what elements do protein contain
C,H,O and N
what is a protein molecule made of
made of many amino acids in a long chain there are 20 different amino acids and are very spesific.
what shape is a dna
a double helix
what are the Dna pairs
A,T. C,G
what is the independent varible
the one you change
what is the dependent varible
the one you measure
