1) Life on earth began how many millions of year ago? a) 2500 b) 3500 c) 4500 2) The first living things developed from? a) thunder and lightning b) chemicals from meteors c) simple chemicals 3) These simple chemicals came from? a) outer space b) the sea c) volcanoes 4) Lots of living things all came into existence at the same time? a) True b) False 5) All liiving things have some things the same a) hair b) chlorophyll c) cells d) eyes 6) The code for life found in all cells is also called? a) genetic code b) cytoplasm c) nucleus d) mitochondria 7) We know we all originated from a common ancestor because of? a) History books b) age of rocks c) fossils d) DNA 8) Evolution happens a) slowly b) quickly c) very quickly 9) Evolution is? a) the reason organisims stay the same b) the reason organisms change over time c) none of the above 10) Natural selection is part of? a) reproduction b) evolution c) fossilisation 11) In natural selection it is survival of the fittest? a) True b) False 12) In natural selection Animals compete for? a) food b) mates c) sunlight 13) Genes get passed on from one generation to the next generation if ? a) They are better adapted to survive b) Regardless, all organisms will reproduce anyway c) Only if there is genetic variation 14) Mutation is? a) a change in the nucleus of a cell b) a change in the size of a cell c) Only if there is genetic variation d) a change in a gene 15) Mutations alter? a) the proteins a cell makes b) the devlopment of an organism c) the typs of cancer that an organism develops 16) A new species can be produced through? a) Mutations b) environmental changes c) natural selection d) all of the above e) none of the above 17) Humans are part of the following group of organisms a) arachnid b) homonid 18) Homo sapiens is the scientific name for? a) apes b) humans c) monkeys 19) There is acorrelation in homonids between? a) brain size and height b) brain size and foot size c) monkeys d) brain size and walking upright 20) A bigger brain size Brain size is an adaption that has meant homonids were more likely to survive? a) True b) False 21) Fossils show? a) Walking upright came before bigger brains b) Walking upright came after bigger brain size 22) To become extinct means? a) no reproduction some years b) a species dies out completely c) none of the above d) bothe of the above 23) Extinction can be caused by? a) increased competiotion b) new predators c) changes in environment d) new diseases 24) Mass extinction happens when? a) Large heavy animals die out b) every living organism dies out c) many species die out because they can't adapt 25) Human activity has lead to? a) less biodiversity b) more biodiversity 26) Human activity has lead to? a) less competition for resources b) more competition for resources 27) Food chains and food webs show? a) what food you can eat b) what diet animals have c) how animal diets and habitats have 28) Nerve impulses are? a) electrical b) rapid c) short lived d) none of the above e) all of the above 29) Hormone signals are? a) chemical b) slow c) long lasting d) none of the above e) all of the above 30) Homeostasis is where the body? a) constantly changes its internal environment b) constantly keeps its internal environment the same c) none of these two 31) The nervous system has? a) sensors only b) receptors only c) both sensors and receptors d) neither sensors noe receptors 32) The central nervous system has? a) Spinal cord b) brain c) neurones d) none of these

Revision quiz B3

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