Explanation:
The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life. These parts were based on a conclusion made by Schwann and Matthias Schleiden in 1838, after comparing their observations of plant and animal cells. The third part, which asserts that cells come from preexisting cells that have multiplied, was described by Rudolf Virchow in 1858, when he stated omnis cellula e cellula (all cells come from cells).
Since the formation of classical cell theory, technology has improved, allowing for more detailed observations that have led to new discoveries about cells. These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are mostly the same, both structurally and chemically; and finally, that energy flow occurs within cells.
Answer:
he functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
Explanation:
<span>If the osmotic pressure in the glomerular capillaries increased from 28 mm hg to 35 mm hg, net filtration would decrease.</span>
Answer:
2. It carries water from the roots to the leaves.
Explanation:
Phloem is the vascular tissue in charge of transporting and distributing organic nutrients.
<span>The
lifting force of all kites is produced by deflecting the air downward,
the resulting change in momentum producing an upward force. The reason
for this is that the air traveling over the top of the curved surface of
the kite is going faster than the air passing underneath. Fast-moving
air creates less pressure; this means there is more pressure underneath
the kite, and this helps to force it upwards.
Think of the kite as a sail boat, catching the air. The air tries
to push the kite along like the sail boat. But the string the flyer
holds keeps the kite tethered. Since the kite cannot go with the wind
flow and the kite is tilted so that the air is deflected downward, the
kite has no where to go but up. </span>
