Explanation:
If the concentration of molecules outside the cell is very high relative to the internal cell concentration, the rate of diffusion will also be high. If the internal and external concentrations are similar (low concentration gradient) the rate of diffusion will be low.
Answer:
Negative growth rate is when a population's average number of deaths is greater than its average number of births. Zero growth rate is when the average number of deaths equals the average number of births.
Explanation:
<span>Basically, retrotransposons is transcribed
then reverse transcriptase produces a double-stranded DNA copy of the element
which is then inserted into the genome. In addition retrotransposons cont are
related to retroviruses that all carry pol and some contain gag. It is a none
encode env thus they can be reverse transcribed and inserted into host DNA but
are unable to produce viral particles. However a typical DNA transposon
transposed through consevative or replicative transposition. Thus these DNA
transposons are a group of transposable elements that can move in the DNA of an
organism via a single or double-stranded DNA intermediate. They have been found
in both prokaryotic and eukaryotic organisms. </span>
61. A measure of acidity or alkalinity of water soluble substances. A pH value is a number from 1 to 14, with 7 as the middle point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
62. The pH scale typically ranges from 1 to 14, with lower numbers representing acids, higher numbers, bases. Neutral liquids like water have a pH of 7.
63. The pH scale ranges from 0 to 14.
64. A major problem with the use of fertilizers occurs when they’re washed off the land by rainwater into rivers and lakes.
