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30 Cards in this Set
- Front
- Back
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Whats the force that holds 2 strands of DNA together?
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base pairing
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what is the material that composes the chromosomes?
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chromatin
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What does the term Hybrid mean?
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heterozygous
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What is the mass number on the periodic table?
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the total number of protons and neutrons in the nucleus of an atom.
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What is the minimum number of point mutations that can cause DNA to code for a different amino acid?
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one
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Where are electron located in an atom?
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electron cloud
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Where are the following located on the periodic table?
a. metals- b. nonmetals- c. metalloids- d. noble gases- |
a. left of stairsteps
b. right of stairsteps c.along stairsteps d.group 18 |
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What will never vary in an atom?
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proton
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What type of mixture is salt dissolved in water?
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solution
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What is an organ composed of?
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cells>tissues>organs> organ system
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What are the 3 types of passive transport?
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osmois , diffusion, and facilitated diffusion
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What are short hair like projections that aid in movement?
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cilia
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What long whip like projections that aid in movement?
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flagella
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Whats the charge of the following?
a. protons b.electrons c.neutrons d.atom |
a. positive
b.negative c.neutral d.neutral |
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What does purebred mean?
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homozygous
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Genetic makeup of offspring is called?
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genotype
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Physical appearance is called?
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phenotype
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How are mutations passed on to offspring?
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meiosis
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What term is used to describe a single set of chromosomes?
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haploid
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What always happens to the DNA code when a mutations occurs?
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The base sequence within a given geme is changed.
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What are some causes of mutations?
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chemicals, viruses, high temperature, radiation, and pollutants
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What is the size of a population that can exist in an ecosystem at any given time?
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carrying capacity
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List the order of levels ina food chain
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producers>1st order>2nd order> 3rd order>4th order
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What is a plants role in the carbon cycle?
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priduce organic carbon compounds called carbs
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Why are bacteria and fungi important parts of our environment?
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They decompose nutrients and return nutrients to the soil.
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What organisms in the in the food chain store the greatest amount of energy?
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producers
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What are carnivores called that feed on organisms that either die naturally or were killed by other organisms?
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scavengers
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What is the conversion of nitrogen gas to nitrates called?
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nitrogen fixation
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What cycle is driven by photosynthesis and respiration?
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Carbon cycle
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What are organisms called that are not native of life in an area?
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exotic
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