B1 questions Flashcards
what ere the 2 types of eukaryotic cell?
animal and plant
what type of cells are bacteria?
prokaryotic
where is DNA found in animal and plant cells?
they are found in the nucleus
what is the function of the cell membrane?
controls movement of substances into and out of the cell
what is the function of mitochondria?
site of respiration to transfer energy for the cell
what is the function of chloroplasts?
contain chlorophyll to absorb light energy for photosynthesis
what is the function of ribosomes?
enable production of proteins(protein synthesis)
what is the function of the cell wall?
strengthens and supports the cell
what is the structure of the main genetic material in a prokaryotic cell?
single loop of DNA
what is a compound?
compounds contain two or more different elements chemically combined in a fixed position
what is a mixture
in a mixture, we have different element’s or compounds not chemically combined together
what is an ion?
ant atom which has gained an electron or lost an electron to a positive or negative charge
what is an ionic substance?
an ionic substance is a positively charged metal bonded with a negatively charges non metal.
what is the charge on a metal ion?
positive
what is the charge on a no metal?
negative
