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olchik [2.2K]
3 years ago
6

Why does water move through a membrane?

Biology
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

The cells need water to maintain their metabolic functions, the way water enters through cells membranes is by osmosis.

Explanation:

The cell membrane is a lipidic bilayer composed of phospholipids and embedded proteins. Phospholipids have the characteristic of being amphiphilic which means that possess hydrophilic and lipophilic characteristics. The most common way is by osmosis, that is a mechanism that moves water from high concentration to less concentration of water.  In the cell membrane, there are is channels of proteins called aquaporins that facilitate the pass of water through the membrane. Also, as water is a very small molecule without charge, this characteristic allows passing a limit amount of water molecules through the hydrophilic characteristic of membranes.

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Diffusion is an important process in animals and plants.
Paraphin [41]

Answer:

Diffusion helps animals in respiration. The cells in an animal's body need glucose and oxygen for respiration. Both these are carried in the blood. When blood reaches the cells the molecules of glucose and oxygen diffuse out of the blood and into the cells. As cells use up the glucose and oxygen they produce waste chemicals and carbon dioxide.

Diffusion is a very important process for photosynthesis where carbon dioxide from the stomata diffuses into the leaves and finally into the cells. This helps the plants to photosynthesize and produce more food.

Example for animals: Animals using glucose and oxygen in diffusion.

Examples for plants: Plants using carbon dioxide to photosynthesize.

8 0
2 years ago
Which evidence of evolution allows scientists to know what the physical features of an organism were ?
Alexeev081 [22]
Fossils, hope this helps
8 0
2 years ago
Each orientation of chromosomes produces gametes with the same genetic information from each parent.
oksano4ka [1.4K]

Answer: a) true

Explanation:

The goal of mitosis is to produce daughter cells that are genetically identical to the mother cell, without a single extra or missing chromosome. Meiosis, on the other hand, is only used for one purpose in the human body: the production of gametes or sex cells, i.e. sperm and eggs. The question is oriented to mitosis, <u>in which prior to this cell division, the cell duplicates its DNA</u> so that each daughter cell then inherits the genetic material. That is, the cell originally possesses 23 chromosomes, they duplicate to a total of 46 so that then each daughter cell receives 23.

The metaphase is the second phase of mitosis and meiosis that occurs after prophase where the envelope is lost and microtubules of the achromatic spindle (also called meiotic or mitotic) appear.

During metaphase, the chromosomes align themselves in the middle of the cell and this balanced midline spindle alignment is due to the equal and opposing forces generated by the kinetochore brothers.

Then during metaphase, the chromosomes will line up in the center of the cell to be separated and go each to a different daughter cell. But the moment they're found there, each orientation of chromosomes produces gametes with the same genetic information from each parent. <u>Because because there have been no changes or mutations in the chromosomes, they have duplicated and have the same genetic information.</u>

6 0
3 years ago
What are some similarities and between Gigantopithecus and humans?
Basile [38]

Answer:

Gigantopithecus could stand on its hind legs, and the known jaws of Gigantopithecus widen towards the rear and proposed that this widening occurred to allow for the housing of a trachea‭ (‬the‭ ‘‬windpipe‭’ ‬that connects the lungs to the mouth opening‭) ‬when the skull was placed directly in top of the head like a human and not carried forward like a great ape.‭

6 0
2 years ago
If the Sun and volcanoes were controlling the climate, the climate would
Neporo4naja [7]

Answer:

<em>The correct option is B) undergo global warming at the same rate as we are seeing currently</em>

Explanation:

The Sun and the volcanoes play a great role in controlling our environment and climate even today. The quantity of the rays of the sun hitting the different parts of the Earth determines what the average weather or climate of a region would be. The volcanoes that erupt from the Earth have been a cause for global warming even today and will continue to raise the temperature of the Earth.

7 0
3 years ago
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