1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ehidna [41]
3 years ago
10

How does the immune system know if a foreign particle has infected the body?

Biology
1 answer:
xeze [42]3 years ago
8 0
The cells won't recognize the foreign particle <span />
You might be interested in
Which of the following statements about an energy pyramid is NOT correct?
timurjin [86]

Answer:

The answer that would NOT be correct is the last one , (Ecosystems that have more energy at higher trophic levels than at lower trophic levels. )

4 0
3 years ago
What statement about the mechanism of hunger and satiety is true?
disa [49]

Answer:

The correct answer is: The ventromedial hypothalamus plays a role in satiety.​

Explanation:

The hypothalamus is a part of the brain that controls many important bodily functions and connects both the nervous system with the endocrine system. The hypothalamus consists of several nuclei that have diverse functions and are located in 3 different regions.

The nucleus that plays a role in satiety is the ventromedial nucleus, terminating hunger and giving a sensation of fullness. It also plays a significant role in thermoregulation, among other things.

Neuropeptide Y, on the other hand, is a peptide that is released to make us feel hungry and encourage us to intake food (primarily carbohydrates).

Cholecystokinin is a hormone released by the small intestines after we had a meal, and its function is to improve digestion and make us feel full.

Fat cells DO release leptin, but the function of this hormone is to produce satiety, by stimulating anorexigenic (meaning they take hunger away) hormones and inhibiting orexigenic ones, like Neuropeptide Y.

7 0
3 years ago
A cat is walking down a sidewalk and spots a dog in a nearby yard. The cat starts to run in the opposite direction and then quic
dusya [7]

Answer:

I think A or B could be a possibility to your answer

3 0
3 years ago
Read 2 more answers
Please help me with this!!!
dsp73

Answer:

I can't see your picture

Explanation:

6 0
3 years ago
During exercise, sympathetic input to the heart is increased. Stroke volume is often maintained, or even increased, even though
pantera1 [17]

Answer:

1. Sympathetic input increases ventricular contractility, thereby increasing stroke volume.

2. Sympathetic input decreases conduction time within the heart, decreasing the delay between atrial and ventricular contractions.

3. Sympathetic input increases the speed of ventricular contraction.

4 0
3 years ago
Other questions:
  • Which statement best describes the relationship of photosynthesis and energy?
    5·1 answer
  • A researcher is studying the color of grasshopper exoskeletons. Assume that this phenotype is caused by the action of two allele
    8·1 answer
  • Does gene mutation affect humans?
    13·2 answers
  • A loss of _____ of body weight can reduce or prevent the risks associated with obesity.
    5·1 answer
  • One human disease is caused by a change in one codon in a gene from GAA to GUA. This disease is the result of..?
    13·2 answers
  • Find amino acid for the mRNA code AAG
    6·1 answer
  • Phage lambda infects E. coli in a nutrient-starved, malnourished host. Why would that phage most likely take the lysogenic, rath
    8·1 answer
  • Roy throws a ball up in the air. Each time he throws the ball up in any direction, it falls back to the ground as shown in the
    7·1 answer
  • What are three<br> ways that climate<br> change is affecting<br> ecosystems in the<br> oceans?
    12·1 answer
  • What is one event that is common to carbon, nitrogen and phosphorous cycle?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!