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3 years ago

What occurs when molecules move into a cell by fusing with the membrane

1 answer:

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Facilitated Diffusion is a process for molecules that cannot be readily diffused through cell membranes. Such molecules may be too large to pass through the pores in the membrane. The movement of these kinds of molecules across the cell membrane is assisted by proteins known as Carrier proteins.

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Ans:using a filament of spirogyra in a laboratory Demonstrate how plasmolysi wil occur

sdas [7]

Answer:

plasmolysis is the shrinkage of protoplast from the cell wall under the influence of a hypertonic solution.this can be observed by placing the fresh filament of spirogyra in a 10% solution of common salt.the cell undergoes exomosis.

I hope this helps

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3 years ago

In Ursula’s model, the yellow straw represents the ____ (phloem, xylem, roots, or leaves) and the red striped straw represents t

kvv77 [185]

The first options answer is phloem while the second answer is roots

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3 years ago

In capturing essential resources, humans often modify their environments. Have you seen any examples of landscapes radically tra

Rina8888 [55]

Answer:

Humans have destroyed and modified various locations, such as forests, jungles, oceans. They begin to modify an environment in order to build new infrastructures, like buildings, factories, or even communities.

Explanation:

The reason for this is because they want to get as much resources for economic purposes, like for example mines, touristic places, factories. At first, this interaction affects the environment more, because of the loss of species or resources due to the human activity. Then, after this, it will affect the human, because of the lack of resources and global contamination caused by the environment being destroyed or modified.

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3 years ago

While hiking, you must push aside thick branches that are near your face. One of them rips the skin on your arm and you begin to

matrenka [14]

Answer:

While hiking, you must push aside thick branches that are near your face. One of them rips the skin on your arm and you begin to bleed from the cut. Which of the following plays an important role in initially protecting you from infection?

The answer to the question is option D (barriers such as dead skin cells and mucus because they are part of the innate immune system)

Explanation:

Hiking which is a way to stay physically active can simply be explained as an engage in a leisure-like activity, to walk a long distance or for exercise.

Innate immunity is one of the two main immunity strategies found in vertebrates, is composed of physical, chemical and cellular defenses against pathogens, such as skin, chemicals in the blood, and immune system cells that attack foreign cells in the body immediately or within hours of an antigen's appearance in the body.

The innate immune system relies on the recognition of particular types of molecules that are common to many pathogens but are absent in the host.

Innate immunity, is something already present in the body which is activated against a specific type of antigen, and the immunity remains throughout the life.

An example of Innate immunity, is the white blood cells fighting bacteria.

Innate Immunity action is usually rapid, and the first line of defense against non-self pathogens is the innate immune response.

Innate type of immunity is generally inherited from parents and passed to offspring.

The main purpose of the innate immune response is to immediately prevent the spread and movement of foreign pathogens throughout the body.

Therefore, during the first critical hours and days of exposure to a new pathogen, the body rely on the innate immune system to protect it from infection.

The skin and other epithelial surfaces, provide a physical barrier between the inside of the body and the outside world.

The mucus layer also contains substances that kill pathogens or inhibit their growth.

Microorganisms do occasionally breach the epithelial barricades. It is then the innate immune system that recognizes and destroy them, without harming the host.

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3 years ago

What is a dynamic character?

Ivahew [28]

I think it's B. one who has many personality traits

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3 years ago