Which macromolecule forms a double layer as the primary structure of cell membranes?

Answers

Answer 1

Answer: A phospholipid is the macromolecule that forms the phospolipid bilayer of the cell membrane. A phospholipid is contained of two fatty acids. They form a bilayer that is hydrophobic on one side and hydrophillic on the other.

Answer 2

Answer:

Answer:

Explanation:

Edge 2020

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Why are nutrients from fertilizer harmful to aquatic ecosystems? They cause an increase in fish populations. The increase in algae population reduces oxygen in the water. They can infect plants, which causes animals and humans to become sick. Fish and other organisms grow too large and can no longer live in the ecosystem.

Answers

The nutrients from fertilizers are harmful to aquatic ecosystems because they increase the algae population which reduces oxygen in the water. This phenomena is called an algae bloom and results in the loss of oxygen in the water. With the subsequent decline in oxygen within the water animal life is often hurt and many species can be killed. This phenomena of algae blooms and harm of the aquatic system can occur both in fresh and saltwater environments.

Nutrients from fertilizers, such as nitrogen and phosphorus, can be harmful to aquatic ecosystems primarily because they promote excessive growth of algae and aquatic plants. Hence option b "The increase in algae population reduces oxygen in the water" is correct.

This excessive growth is known as eutrophication. The process unfolds as follows:

Nutrient Input: Fertilizers with nitrogen and phosphorus are often utilized in residential and agricultural settings. These nutrients may be introduced into surrounding water bodies by runoff from these locations.

Algal Blooms: Nutrients function as fertilisers for algae and aquatic plants, causing algal blooms. Algal blooms are therefore created as a result of the fast growth in the population of algae. These blooms can completely cover the water's surface, turning it green or murky.

Oxygen Depletion: The process of decomposition consumes oxygen when the algae and aquatic plants die and degrade. An higher need for oxygen results from the large amount of organic material from the deceased organisms. As a result, the amount of dissolved oxygen in the water may decrease.

To know more about eutrophication:

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Chromatids separate from each other during telophase
true or false?

Answers

Its a false statement !

How are populations limited in ecosystems?

Answers

a population is a group of living organisms of the same species, havethe same features etc etc, living together in the same habitat.

An organism that gets energy by eating meat or living or dead things

Answers

Carnivore get energy by eating meat living or dead.

What would most likely happen if the power lines in a petroleum power plant were broken?

Answers

What can happen is that the people will be out of electricity. If the heavy power that depends on the transmission lines break and leaves the plant broken the it is a matter of fixing the transmission lines. As you can see those are the most imprtant lines. If some important things like the main switch gear gest lost then you can lose ventilation, and fuel fumes can accumulate and ignite.

To study the details of protein molecules on the surface of a cell, a biologist would likely use aA) compound light microscope

B) dissecting microscope

C) Scanning electron microscope

D) transmission electron microscope

Answers

Answer;

C) Scanning electron microscope

Explanation;

-A Scanning Electron Microscope (SEM) is a powerful magnification tool that utilizes focused beams of electrons to obtain information.

-A scanning electron microscope (SEM) scans a focused electron beam over a surface to create an image. The electrons in the beam interact with the sample, producing various signals that can be used to obtain information about the surface topography and composition.

-Advantages of a Scanning Electron Microscope include its wide-array of applications, the detailed three-dimensional and topographical imaging and the versatile information garnered from different detectors.

Answer:

C) Scanning electron microscope

Explanation:

Scanning electron microscope - It uses a focused beam of the electron over a surface to form an image electron that interacts with the atom present in the sample and it produces various signals that are used derive information from the composition and details structure of protein molecule.

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