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9966 [12]
3 years ago
12

Q6.2. There are many diseases that do not infect a person more than once, such as chicken pox

Biology
1 answer:
Vilka [71]3 years ago
3 0

The responsible for this lifetime immunity is the acquired immune response because antibodies are developed from previous infections. The generation of antibodies is a response to these infections.

The acquired immune system eliminates pathogenic organisms and any toxic molecules they produce.

The acquired immune system has two mechanisms of action: humoral immunity and cellular immunity.

Humoral immunity, also known as antibody-mediated immunity, involves the activation of specific blood cells (B cells) and subsequent secretion of antibodies when in contact with a pathogen.

Thus, the acquired immune system develops specific antibodies as a response to infections (e.g., chickenpox and measles).

Learn more in:

brainly.com/question/1379924?referrer=searchResults

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Phospholipids form the main fabric of the plasma membrane. One feature of phospholipids is that when they are placed in an aqueo
Sergio039 [100]

The bilayer of the plasma membrane is similar to the bilayer formed by phospholipids when they self-assemble.

<h3>Does the primary structure of the cell membrane consist of phospholipids?</h3>

The basic structure of the plasma membrane is a bilayer of phospholipids. Being amphipathic, or having both hydrophilic and hydrophobic areas, makes them ideal for this function. Hydrophilic heads and hydrophobic tails are visible in the chemical structure of phospholipids.

<h3>Why are phospholipids present in the plasma membrane?</h3>

The main lipids in membranes, phospholipids, are made up of lipid bilayers. Furthermore, it allows numerous cellular processes to take place in subcellular compartments while serving as a barrier to guard the cell against various environmental disturbances.

To know more about phospholipids visit :-

brainly.com/question/14949280

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8 0
2 years ago
Dr. Kavanaugh has noticed that many of her students are having difficulties understanding the basic parts of a nerve cell (neuro
wel

Answer:

Hypothesis

Explanation:

Since the problem of the research has been already defined, the next step is to formulate a hypothesis.

This is a clear statement highlighting the main idea or purpose of the scientific research. In this case our hypothesis could be:

The way in which information is presented affects student interest and memory of the material.

8 0
4 years ago
You have found a limestone layer with numerous fossil corals, fossil sponges, and other fossils, little or no stratification, an
tino4ka555 [31]

Answer:

You have found a limestone layer with numerous fossil corals, fossil sponges, and other fossils, little or no stratification, an absence of cross-bedding and ripple marks. In which environment was this limestone formed?

answer; an organic reef

Explanation:

An organic reef is a sedimentary rock structure of significant dimensions, erected by and composed almost exclusively of the remains of corals, algae, bryozoans, sponges and other sedentary or colonial organisms.

6 0
3 years ago
Which one of the following conditions is an example of resource partitioning?
Nana76 [90]
The correct option is A. Resource partitioning refers to a situation in which living organisms live together in the same environment in such a way that it is easy for them to co-exist because they are not using the same resources. In the question given above, it will be easy for the two species of squirrels to co-exist because although both are feeding on acorns, they are not feeding on acorns from the same location; one feed on the ground, the other feed on the trees.
5 0
3 years ago
6 points
inn [45]
The deer population will decrease
6 0
3 years ago
Read 2 more answers
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