year 7 and 8 mixed science Flashcards
where are protein enzymes found?
stomach
what is another name for lipids?
fats
Sulphuric acid + copper oxide → _______ + _______
Sulphuric acid + copper oxide → copper sulphate + water
if B = brown eyes and b= blue eyes, what is the possibility of this baby having brown eyes?
dad = Bb mum= bb
50%
what is the symbol equation for reduction of methane?
CH4+2O2→CO2+2H2O
what is an allele?
a type of gene
where do the lines of a magnetic field point to?
A: north
B: south
B: south
what is respiration?
a chemical reaction that releases energy in an organism
true or false: rodents are pollinators
true
what are 3 uses of a permanent magnet?
fridge magnets, phone cases, motors, headphones, sensors
if B = brown eyes and b= blue eyes, what is the possibility of this baby having brown eyes?
dad = Bb mum= Bb
75%
what is ‘Y’ in sex cells
male
when you inhale, you breathe in 21% oxygen and when you exhale, you breathe out 18% oxygen. What is that 3% oxygen used for?
respiration
where are lipase enzymes found?
small and large intestines
what is a compound?
a group of more than one different particles
if there are 3 amps in a parallel circuit, amp 2 being on the parallel line with 2 bulbs in front with a resistance of 0.40, what are the other 2 amps’ resistance?
Amp 1 = 0.40
Amp 3 = 0.40
what part of the cell are chromosomes stored?
the nucleus
Copper + water → _______ + _______
Copper hydroxide + hydrogen
what is an element?
a group or single particle that are all the same particles
give examples of protein that are not meat
beans, peas, eggs, lentils
what is a base
a substance that neutralises acids
what is a vertebrate?
an animal that has a spine/back bone
what are platelets used for?
forming blood clots to prevent bleeding
what is aerobic respiration?
the process when glucose reacts with oxygen
what’s a gamete?
a sperm or egg cell
what is an atom?
a single particle
what is the symbol equation for reduction of ammonia?
4NH3
how do you test for fat?
grab the substance and place it on filter paper and leave it to dry. If there is a stain around the substance then it is fat otherwise it is not
how do you test for glucose?
using Benedict’s solution, if the substance turns orange then it is glucose otherwise it’s not
what is a molecule?
more than one particle
what are the 4 main components of blood?
plasma, red blood cells, white blood cells and platelets
what lipids broken down into?
fatty acids and glycerol
copper + oxygen → ________ + _______
copper + oxygen → copper oxide
what is protein used for when it is broken down by protease?
muscle growth and tissue repair
what are lipids used for when they are broken down by enzymes?
insulation
what does carbohydrates break down into?
sugar
what is an example of an invertebrate?
snail, prance mantis, sea urchin, star fish, snake, worm
what is a base called if it dissolves in water
alkali
Hydrochloric acid + magnesium carbonate → _______ + _______ + _______
Hydrochloric Acid + Magnesium Carbonate → Magnesium Hydrate + Carbon Dioxide + Water
what enzymes are lipids broken by?
lipase enzymes
how do you test for starch?
using iodine, if the substance turns transparent blue then it’s starch otherwise it is not
what is ‘X’ in sex cells
female
which enzyme is amylase described as?
carbohydrase
where are protease enzymes found in?
the stomach
Magnesium + hydrochloric acid → _______ + _______
Magnesium + hydrochloric acid → magnesium chloride + hydrogen
what is a gene?
part of the DNA that defines how you look
how many chromosomes are in one sperm cell?
23
where are carbohydrase enzymes found?
mouth
give some examples of acids
Vinegar, lemon, fizzy drinks
what is plasma in blood?
the liquidy part of blood, contains various substances
what is a fertilised egg called?
a zygote
stomach acids are in the process of breaking down protein in the stomach but what are they used for?
getting rid of harmful micro organisms on the food
what if a gene is heterozygous?
2 of a different gene e.g. Bb
what is a pollinator?
an animal or insects that do seed dispersal
what does protein break down into?
amino acids
how do you test for protein?
using the Buiret test, if the substance turns purple then it is protein otherwise it is not
what is in between the ribs to help it move?
intercostal muscles
what is an amphibian?
a vertebrate that can live in and out of water e.g. frogs
what is the order of what an organism (human) is made of?
specialised cell, tissue, organ, system, organism
what is the symbol equation for combustion
CH4 + 2O2 → CO2 + 2H2O
what if a gene is homozygous?
2 of the same gene e.g. BB or bb
