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solniwko [45]
3 years ago
13

What does this experiment demonstrate about the movement of water across a cell membrane?

Biology
1 answer:
AfilCa [17]3 years ago
5 0

Answer:smosis is the diffusion of water across a semi-permeable (or differentially permeable or selectively permeable) membrane.

Explanation:

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Compare the structures and functions of the biomolecules lipids and starches.
alisha [4.7K]

Answer:

Lipids:

Lipids may be defined as the class of organic compounds that are either fatty acids or their derivatives. Lipids mainly composed of a glycerol molecule, long hydrocarbon chains and a phosphate or other chemical group. The main function of lipids are: They acts as energy fuel and acts as a main constituent of plasma membrane.

Starches

Starch may be defined as a type of carbohydrate and present in plants as well as animal. Starch mainly composed of large glucose units linked through the glycosidic bonds. The main function of starch is to provide energy to an organism.

5 0
4 years ago
The restriction point is defined best as the point in the cell cycle a. where cells stop progressing through the cell cycle rega
dexar [7]

Answer:

The correct answer is option c.

Explanation:

The G1 phase of the cell cycle refers to the initial phase of the cell cycle or the first phase of the cell division that needs some additional growth element called mitogen in order to carry on the process. However, these mitogens are needed until the cell attains a particular state in the G1 phase.  

If the mitogens are withdrawn prior to that state, the cell cycle will get an arrest. Once the cell has reached and passed that state it becomes completely independent of mitogen and does not care for the presence of mitogen. This state is called restriction point, which usually takes place in late G1 phase.  

After passing the restriction point, the cell is destined to go through the process of mitosis regardless of the absence of existence of mitogen. Thus, the correct answer is option c.  

3 0
3 years ago
Which diffuses the fastest: He or N2?
stepladder [879]
He diffuses faster i have already done that lab
5 0
3 years ago
Which statement accurately describes tectonic plate movement? Tectonic plate movement can be prevented with planning. Tectonic p
ira [324]

Answer:

The correct answer is Tectonic plate movement is a long-term environmental change.

Explanation:

When tectonic plates in the earth started to move, this process helped the planet to evolve and to shape the continents as exist today.

Different investigation teams have discovered that plates move approximately 2.5 centimeters per year. This movement is the key to the evolution of life and the development of the planet. This slow process involves mountain formation, rocks exposure, and chemical reactions that could stabilize the temperature on the earth´s surface for millions of years. And this stable weather is essential for the evolution of life. Plates movement carries carbon inside and outside of the planet, regulating the amount of carbon dioxide in the atmosphere (greenhouse effect). In this way, it can regulate the temperature. This regulation influence in precipitations,  chemical reactions that involve carbon release and minerals such as calcium, the water flow, volcanic eruptions, among other events. Plates tectonic is also responsible for life, as weathering and mineralization of the rocks release elements and nutrients that are necessary for the life of different organisms.    

So, up to this point, we can say that tectonic plates movement can not be prevented with planning, it does cause environmental change by regulating temperature, and hence it affects organisms.

There are short term effects and long term effects provoked by tectonic plates movement. Earthquakes are examples of short term effects, while mountain formation, ocean formation and, clime regulation are examples of long term changes.

Plates tectonic movement is a very slow process, that might last many years. The Andes formation, for example, started approximately 200 years ago, and these mountains are still rising. The subduction process has not finished as the plates are still moving.  

5 0
3 years ago
Read 2 more answers
What forms 2 identical daughter cells?
kotegsom [21]
Mitosis results in two <span>identical daughter cells..</span>
4 0
3 years ago
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