Question 19 (Multiple Choice Worth 2 points) (02.01 MC)
Which of the following best explains how water is able to dissolve ionic substances?
A- The positive and negative charges of the water molecule pull on the negative and positive ends of the ionic molecule to break them apart.
B- The strong hydrogen bond on water attracts the positive end of the ionic molecule and breaks the ionic bond.
C- Water acts as a proton donor for the negative end of the ionic molecule to attract the anion and form a new ionic molecule
D- The water molecule shares its electrons in a covalent bond with the positive end of the ionic molecule to break the ionic bond.

one centimetre is equal to 0.01 metres

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus