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nignag [31]
3 years ago
10

The ability of memory lymphocytes to remember previous infections and improve immune defenses if the same microbe is encountered

in the future is known as __________.
Biology
1 answer:
marin [14]3 years ago
6 0

Answer:

Immunological memory

Explanation:

Immunological memory is a basic defense mechanism that is common in adaptive immune system, which improves on the response rate and efficiency of the immune system to subsequent attacks from antigens after an initial invasion of the body by such antigens has been neutralized or dealt with.

During the initial invasion of the body by unknown antigenes that cause infection, the immune cells known as the T and B cells work together in producing antibodies to provide a primary immune response against this threat. Some of these antibodies and memory cells remain in the body, making it possible for the immune system to recognize the specific antigenes quickly when they invade the system in subsequent attacks. The immunological memory of the immune system makes it possible for quick and fast response in eliminating such identified antigens when next they invade the body .

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Which of the following is NOT a density-dependent factor affecting population growth?
sveta [45]

B

<u>Temperature</u> is NOT a density-dependent factor affecting population growth

Explanation:

Density-dependent factors mean variables that are affected by the density of the population. The opposite of density-depend is density-independent factors. These are those variables that affect the density of the population but are not affected by the density of the population.

In this case, temperatures are not affected by the density of the population. However, temperatures affect the density of the population. Most individuals can only survive within an optimal temperature range.

The rest of the choices are density-dependent variables

Learn More:

For more on dependent and independent variables check out;

brainly.com/question/3205171

brainly.com/question/3205171

brainly.com/question/4600039

#LearnWithBrainly

7 0
3 years ago
Your teacher will grade your responses to questions 24 and 25 to ensure you receive proper credit for your answers. Identify the
maria [59]

Answer: Nervous system, skeletal system, muscular system. The nervous system control the muscles and the skeletal system helps to support those muscles.

Explanation:

The nervous system consists of a set of cells specialized in conducting electrical and chemical signals, called neurons, and glial cells that are supportive. <u>The nervous system picks up external stimuli from the environment or signals from the organism itself (internal stimuli), and this information is transmitted by nerves to the brain, where everything is processed and a signal is emitted that causes the contraction of certain muscles. </u>

The nervous system is divided into central and peripheral systems. The central nervous system comprises the spinal cord and brain, while the peripheral nervous system comprises the nerves that connect the central nervous system to the body. Within the peripheral nervous system, there is a sensory (afferent) nervous system responsible for incorporating information from receptors (such as the eyes, the skin for touch, etc.), and a motor (efferent) system that carries the information to the muscles.  

From the functional point of view, it is also differentiated into somatic and autonomic system. The somatic nervous system consists of neurons that control voluntary actions, while the autonomic nervous system is responsible for involuntary functions. And within the latter group are included the sympathetic nervous system (which is activated in situations of danger to stimulate many organ functions that cause a rapid response), the parasympathetic (which is involved in the regulation of several organs and its action is opposite to that of the sympathetic nervous system) and the enteric nervous system in the gastrointestinal tract.  

The muscular system is a set of muscles that can be controlled voluntarily, if we refer to skeletal muscles. <u>Their main function is mobility, an action that takes place when stimuli from the nervous system provoke the contraction of the muscle fibers</u>. There are three types of muscle tissue: skeletal, smooth and cardiac, and all of them are able to contract but they differ in certain characteristics, location and the way in which the contraction is regulated, which can be voluntary or involuntary.  

Muscle tissue receives electrical impulses from the nervous system and responds to them by generating a contraction movement. The neuromuscular junction plate is the connection established between a motor neuron and a muscle, by means of which the neuron transmits electrical impulses to the muscle fiber and between them there is a space called synaptic cleft. When a nerve impulse called action potential travels through the axon of a motor neuron, the neurotransmitter acetylcholine is released into the synaptic cleft, which binds to the muscle cell membrane and causes it to alter its membrane potential causing a depolarization that triggers contraction.  

Finally, the skeletal system consists of a rigid structure formed by bones, and has several functions such as mechanical support, maintenance of posture, makes possible the bipedal position and protection of vital organs. The joints between two adjacent bones, called articulations, make muscular movements possible. <u>In addition, the bones serve as insertion sites for the tendons of the muscles, which allow movement </u>that is controlled by the nervous system and carried out mainly by the muscular system.

So, the nervous system control the muscles and the skeletal system helps to support those muscles.

6 0
2 years ago
The three major clades of bilaterian animals are the __________.
Vaselesa [24]
The three major clades of bilaterian animals are the <span>ecdysozoa, lophotrochozoa, and deiterstomia. 
Ecdysozoa are organisms that include insects, crustaceans, chelicerata, and myriapods. Lophoytochozoa include fossil organisms. Deiterstomia include chordata, echinodermata, and hemichordata.
Bilaterian animals have bilateral symmetry, meaning that they have a head, and a tail, as well as back and belly. 
</span>
8 0
2 years ago
Which of the following is one of the ways that cellular respiration and
Bond [772]

Answer:

•Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration  puts it back.

Explanation:

Photosynthesis:

It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.

Carbon dioxide + water + energy →   glucose + oxygen

water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture  by chloroplast.

Cellular respiration:

It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP

In this way it release the carbon dioxide back into atmosphere.

8 0
2 years ago
Which term completes the sentence given below?
Serhud [2]

Answer:

Maybe animals that have been resurrected or cloned

Explanation:

hope it helped

4 0
3 years ago
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