bio chem page 1

state one similarity between bacterial calls and animal cells. (1)

both have cell membrane

name the type of neurone that carries impulses to muscles.

motor neurone

what blood component produces antibodies?

white blood cells

what blood component is involved in clotting?

platelets

what is the state symbol for aqueous solutions?

aq

give the general formula of alkenes.

CnH2n

what is the purpose of vaccination?

to stimulate an immune response by producing antibodies.

what is generally produced at the cathode in electrolysis?

metal and hydrogen gas

name one metal found unreactive in nature

gold

what is the test for hydrogen gas?

lit splint , squeaky pop test

what happens to pH when acid is added to water?

pH decreases to 1-6 depending how much acid is added

what process separates substances using electricity?

electrolysis

name one symptom of salmonella (not diarrhoea or vomiting).

swear stomach cramps

name the first antibiotic developed.

pencillin

suggest why bacteria numbers may increase after starting antibiotics. (2)

bacteria split into 2 every 20 minutes so more bacteria is created , and antibiotics take time to work.

explain why a patient feels better before all bacteria are destroyed.

1.antibiotic kills many bacteria. 2.there are fewer bacteria producing harmful toxins 3. symtoms improve so patient feels better even though some bacteria are still remaining.

why are reflex actions important?

they are quick and automatic and protect you as they prevent you from getting injurys

explain why antibiotics are not used for minor infections. (2)

they can be cleared naturally and taking un necessary antibiotics can reduce antibiotic resistance