BSCI 124 Unit I sample exam questions There are fifty questions each worth two points Multiple choice Record the best answer Record your answers in the blank spaces to the left of the question number using CAPITAL letters 1 Science is different from art philosophy and religion because scientific principles are A always correct B verified C biased D filled with emotion 2 One way carbon leaves the biosphere is by A photosynthesis B fixation C respiration D all of these 3 Prokaryotic cells lack A a plasma membrane B DNA C organelles D cytosol 4 In most plants the primary organ for photosynthesis is the A leaf B stem C root D wood 5 When discussing the energy flow and food chains what is an example of a producer A lions B the earth C cows D grass 6 This organelle stores compounds that may include sugars salts or pigments A golgi apparatus B endoplasmic reticulum C nucleus D vacuole 7 The purpose of meiosis it to produce A growth B epidermal cells C gametes D xylem 8 Bones support animals What supports plants A cell walls B muscles C also bones D plasma membranes 9 Which of the following is NOT a component of a nucleotide A phosphate B lipid C sugar D organic base 10 The major site of protein synthesis is the A nucleolus B ribosome C plasma membrane D chloroplast 11 The biosphere includes A the atmosphere B the oceans C the organisms D all of these 12 Carbohydrates have a lot of energy because they have a lot of A carbon hydrogen bonds B glycerol C phosphate atoms D oil 13 Science can best be described as A a technique B all knowledge C not using data D lacking experimentation 14 The site of plant cell reproduction in the root is the A xylem B meristem C root hair D root cap 15 If you have been eating too much fat your blood may have high levels of A polysaccharides B triglycerides C monosaccharides D sugar 16 Electrons lost from the photosynthetic pigments through photosynthesis are replaced by the breakdown of A carbon dioxide B water C ATP D NADPH2 17 The site of cellular respiration is the A golgi apparatus B nucleolus C mitochondrian D endoplasmic reticulum 18 The purpose of the DNA master plan is to produce A glucose B lipids C proteins D starch 19 Which of the following is NOT true about living organisms A they grow and develop B they respond to stimuli C they reproduce D they create their own energy 20 For protein synthesis the DNA message must first be transcribed What molecule does this A transfer RNA B ribosome RNA C messenger RNA D amino acid 21 The cellular contents circulates because of A gravity B microtubules C transpiration D osmosis 22 Waxes certain vitamins and chlorophyll are made of A proteins B carbohydrates C lipids D nucleic acids 23 The purple P flower color of a plant is dominant over the white p color The phenotypic ratio of the offspring due to random assortment is 4 purple 0 white What are the possible genotypes of the parents A PP PP B PP pp C Pp Pp D any of these 24 After mitosis what is the relationship between the mother cell and the resulting daughter cell A the mother is diploid and the daughter is haploid B the mother is haploid and the daughter is diploid C they are identical D they are different 25 The important way nitrogen enters the biosphere is by A respiration B decomposition C photosynthesis D fixation by bacteria 26 DNA duplication occurs in A metaphase B anaphase C telophase D interphase 27 The division of the cell s cytoplasm is called A mitosis B interphase C cytokinesis D prophase 28 The actual source of energy in the biosphere comes from A heat B UV radiation C gravity D photons 29 What happens in Anaphase I of meiosis A The sister chromatids separate B The cell goes from the diploid to the haploid condition C The DNA duplicates D The chromosomes line up along the equator 30 What is a characteristic of lipids A they are the primary compound in the cell wall B they are the transport form of sugar C they make up RNA D they won t dissolve in water 31 A codon will match with a specific A amino acid B lipid C cell type D carbohydrate 32 The plant cell wall is primarily composed of A living cells B lipid C cytosol D carbohydrates 33 These chromosomes are alike A heterozygous B dominant and recessive C homologous D all of these 34 The purpose of sexual reproduction is to A produce variable offspring B produce new cells for growth C duplicate nuclei D duplicate prokaryotic organisms 35 In mitosis the sister chromatids are pulled apart by A spindle fibers B cytokinesis C chromosomes D cytoplasmic streaming 36 In a plant the tall characteristic T is dominant over the short t In a monohybrid cross two tall plants produce 3 tall and 1 short offspring What are the genotypes of the parents A TT tt B TT Tt C Tt Tt D tt tt 37 Products of the light reaction of photosynthesis are A high energy molecules B sugars C water D carbon dioxide 38 Water moves through a plant because of A a water pump in the roots B a water pump in the stem C evaporation from the leaves D evaporation from the roots 39 The energy used during photosynthesis to form the bonds in glucose comes from A ATP and NADPH2 B H2O C CO2 D N2 40 Having two complete sets of chromosomes A egg B haploid C sperm D diploid 41 The trait that is masked in the heterozygous condition is A a phenotype B dominant C a tall pea plant D recessive 42 With incomplete dominance when a red flowered plant is crossed with a white flowered plant the offspring will be A red B pink C white D all of these 43 In respiration the energy from sugar molecules is transferred to A photosynthetic pigments B ATP C carbon dioxide D oxygen 44 If a photon s wavelength is increased its energy will A increase B stay the same C decrease D all of these Matching match the plant structure with its primary function use capital letters 45 Stomates A protective tissue 46 Cuticle B food transport 47 Phloem C gas exchange 48 Epidermis D storage 49 Cortex E water transport 50 Xylem F prevents excessive evaporation ANSWERS 1 B 2 C 3 C 4 A 5 D 6 D 7 C 8 A 9 B 10 B 11 C 12 A 13 A 14 B 15 B 16 B 17 C 18 C 19 D 20 C 21 B 22 C 23 D see note below 24 C 25 D 26 D 27 C 28 D 29 B 30 D 31 A 32 D 33 C 34 A 35 A 36 C 37 A 38 C 39 A 40 D 41 D 42 B 43 B 44 C …