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PtichkaEL [24]
3 years ago
12

Which part of the cell membrane is polar and allows the cell to exist in water

Biology
2 answers:
barxatty [35]3 years ago
8 0

Answer:

The Phospholipid head which contains a phosphate group

Explanation:

The cell membrane contains phospholipids.

The Phospholipid bilayer is made up of phospholipids

Phospholipids consist of a hydrophobic tail (non-polar and is repelled by water)

It also consists of a polar head which is polar because it has a phosphate group which is negatively charged and therefore is hydrophilic (water-loving)

8_murik_8 [283]3 years ago
3 0
Phosphate groups are polar and allow the cell to exist in water.
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When two pea plants with Tt genotypes are cross-bred how many short (tt) plants will there most likely be in the new generation
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25%

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A performer, seated on a trapeze, is swinging back and forth with a period of 8.90 s. If she stands up, thus raising the center
iren2701 [21]

Answer:

8.800s

Explanation:

When the performer swings, she oscillates in SHM about Lo of the string with time period To = 8.90s.

First, determine the original length Lo, where for a SHM the time period is related to length and the gravitational acceleration by the equation

T = 2π×√(Lo/g)..... (1)

Let's make Lo the subject of the formulae

Lo = gTo^2/4π^2 ..... (2)

Let's put our values into equation (2) to get Lo

Lo = gTo^2/4π^2

= (9.8m/s^2)(8.90s)^2

------------------------------

4π^2

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= 19.663m - 0.44m

= 19.223m

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The color of the surfaces because an object with a black surface will absorb and reradiate energy faster and at a higher concentration than the same object with a lighter colored surface.

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