BIO BROWN LW 8 Q2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 4 organic molecules | lipid, carbohydrates, protein, and nucleic acid
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| whats a lipid made of | 3 fatty acids and one glycerol
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| whats a carbohydrate made of | sugars and starches
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| protein has | amino acids
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| nucleic acid is made of | nucleotide > DNA + RNA
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| what are the 4 inorganic molecules | base(8-14), acid(0-6), water and salt
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| living things are | biotic
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| nonliving things are | abiotic
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| organic molecules would contain which major elements | carbon hydrogen oxygen and nitrogen (CHON)
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| the formula for photosynthesis is | CO2 + H2O + SUNLIGHT > O2 + GLUCOSE
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| when O2 is released where does it go | into the environment
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| what could the plant use O2 for | cellular respiration
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| what is the formula for cellular respiration | O2 + GLUCOSE > CO2 + H2O + ATP(36 ATP)
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| define mitosis | deals with somatic body cells
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| define meiosis | deals with the devision of sex cells
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| mitosis key points | ~1 division ~2 daughter cells ~identical(2n, 46 char.) ~doesn't go through synapsis ~body cells ~six stages ~asexual
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| meiosis key points | ~disjunction,synapsis,crossing over ~2 divisions ~4 daughter cells ~4n, 23 chr.~goes through synapsis ~gonads(ovaries and testes) ~10 stages ~ sexual
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| define evolution | change over time
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| when crossing over occurs in meiosis how will this effect the rate of evolution | it will create genetic variation and the rate of evolution would increase
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| which would affect evolution more asexual or sexual reproduction and why | sexual because you are combining 2 different genetic sequences creating variation (crashing over) > speeding up evolution
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| what happens if DNA is altered | a mutation occurs
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| define independent variable | the variable that is being changed
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| define dependent variable | the variable being measured
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| define constants | always will stay the same
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| define control | not being tested, used as a COMPARISON
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| during fertilization we get ____ the chromosomes from mom and ____ the chromosomes from dad | 23 or half / 23 or half
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| when a zygote forms they will restore the number of chromosomes which will be ____ | 46
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| function of the placenta | provides nutrients for developing embryo, nutrients + O2 to embryo , exchange wastes - H2O, CO2 + nitrogenous wastes
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| what else may be passed through membrane by diffusion | alcohol and drugs
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| why do enzymes only work with certain substrates | they have to fit into each other + be specific
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| which hormones will be produced by the ovary | estrogen and progesterone
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| order pituitary, hypothalamus, testosterone, and testes | hypothalamus, pituitary, testes, testosterone
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| order menstruation, ovulation, follicle stage, and corpus luteum | follicle stage, ovulation, corpus luteum, menstruation
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| why do hormones act on specific types of target cells | because they are very specific + target cells have receptors that recognize the hormones
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| explain why a skin cell and a nerve cell that have the same genetic information can specialize or differentiate to preform different functions in different locations | all cells have the same DNA but in different locations, different parts of the DNA, (gene segments) are used causing the cells to differentiate, (FSH and LH are produced by pituitary
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| a new concept that is tested in a scientific investigation is known as | the hypothesis
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| a biologist in a lab reports a new discovery based on experimental results. if the results are valid, biologists in other labs should be able to... | repeat the same experiment and obtain the same results
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| in an experiment what should be the relations ship between the control group and the experimental group | they should be identical in all respects but one
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| graphs fro laboratory investigations are used to | observe general trends in data
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| a student conducted an original well-designed experiment carefully following proper scientific procedure. in order for conclusions to become generally accepted the experiment must | be repeated several times to verify the reliability of the data
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| explain why some cells in a females body respond to reproductive hormones while other cells do not | very specific, have to fit together (receptors)
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