99 points! (pls answer every question)
a charged balloon is brought near an electroscope but does not touch the electroscope. this is an example of charging by?
friction
convection
induction
conduction
true or false. in a current, electrons will always flow from negative toward positive.
question 5 options:
false. electrons flow from positive toward negative because like charges are attracted to each other.
false. electrons do not move.
true. electrons flow from positive toward negative because like charges are attracted to each other.
true. electrons flow from negative toward positive because opposite charges are attracted to each other.
which of the following materials is an insulator against electric current?
question 7 options:
a silver spoon
a copper wire
a copper penny
a rubber tire
which of the following materials is a conductor of electric current?
question 8 options:
a glass window
a plastic game piece
a wooden spoon
a copper penny
Answers: 2
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Specialized cells which perform a particular function form : organisms organs tissues
Answers: 2
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Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air
Answers: 2
Biology, 22.06.2019 14:00
True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.
Answers: 1
Biology, 22.06.2019 14:00
Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d
Answers: 1
99 points! (pls answer every question)
a charged balloon is brought near an electrosco...
a charged balloon is brought near an electrosco...
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