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Scorpion4ik [409]
2 years ago
9

According to current scientific thinking, true multicellular organisms evolved from what

Biology
1 answer:
laiz [17]2 years ago
8 0
Descend from several different kinds of unicellular protest's, which became multicellular through specialization and cooperation among cells within a colony.
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Have you ever seen a pot of water on the stove? What have you observed about the water as heat is added to it? How do you think
V125BC [204]

Answer:

Explanation:

Ok so the change of the state is gas because u are boiling water so the water get hotter and then gas starts to come out of the water because of how hot it is

8 0
2 years ago
why is it important that ions being transported across a cell membrane be shielded from the interior of the lipid bilayer
Degger [83]

The answer is The ions are protected inside the lipid bilayer so that it is not pushed back to a more polar environment.

The lipid bilayer is mainly composed of lipids (phospholipids and cholesterol), and is also composed of proteins such as transporters.

The ions (which are polar) can not cross directly through the lipids because they will repel them due to their apolarity. On the other hand they can easily pass through protein channels that will protect them during their passage (the proteins are more polar than lipids).

6 0
2 years ago
You are a population geneticist and you have recently visited a remote pacific island where you have discovered a race of giant
Evgen [1.6K]

Use the Hardy Weinburg equation of allelic frequency.

P2+2pq+q2=1

174/1378 = 0.126 = q2

Therefore q2 = 0.126; q = 0.355

If q = 0.355 and we understand that p + q = 1, then

P = 1 – 0.355 = 0.645

To find homozygous dominant population (p2);

(0.645)2 x 1378 = 0.416 x 1378 = 573

Heterozygous popualiton (2pq);

(2 x 0.645 x 0.355) x 1378 = 0.458 x 1378=  631

Recessive indviduals (q2) =  174


3 0
2 years ago
Quiz: sensation and perception select the best answer to each question. our perception of the brightness of a color is affected
zmey [24]

Our perception of the brightness of a color is affected mainly by: the amplitude of light waves.

Night and peripheral vision depend mainly on rods, while daylight and acute vision depend mainly on cones.

The amount of light entering the eye is regulated by changes in the size of the pupil.

If you project a red, a green, and a blue light into space, the point at which the three lights cross will lead to the perception of white light.

eric has been wearing red welding goggles for the past 30 minutes. Based on the opponent-process theory of color vision, when Eric takes off the red goggles, he should expect that objects will temporarily appear to be green.


3 0
2 years ago
Explain why the vessels that transport water in trees must be very small in diameter.
kipiarov [429]

Answer:

The diameter of the xylem vessels should be small in order for the capillary action to take place.

Explanation:

The vessels through which water is transported to different parts of the plants and trees are the xylem. Water is transported in the trees through a mechanism named as capillary action. This mechanism can occur only if the diameter of the vessels are small.

The water molecules adhere to the walls of xylem and an upward force is generated. If the diameter of the vessels i.e xylem would be small then the surface tension between the xylem and water molecules would be enough to move the water in an upward direction.

6 0
2 years ago
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