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
Vika [28.1K]
3 years ago
13

__________ is a phagocytic leukocyte that can engulf a foreign bacterium?

Biology
2 answers:
KATRIN_1 [288]3 years ago
5 0

Answer:

The correct answer is: macrophages.

Explanation:

Macrophages are white blood cells, which means they participate in the immune response. What characterizes the Macrophages is that they are very big and have the ability to engulf and digest pathogens like bacteria and viruses, while they can also "eat" old cells or dysfunctional cells. This process is called <em>phagocytosis</em>.

<u>Macrophages can be found all over the body</u>, patrolling for pathogens in many different tissues, where they take alternative names that relate to the specialization they have in said tissue; for example, macrophages in the liver are called Kupffer cells, while macrophages in the nervous system are called microglia.

All macrophages share a common ancestor: the monocyte. The monocyte is a big white blood cell that travels through the bloodstream.

Monocytes and macrophages are part of the <em>mononuclear phagocyte system</em>, which also grants them the particularity of being <em>APCs (antigen-presenting cells)</em>, a very important feature for the correct functioning of the immune system.

Anna71 [15]3 years ago
4 0

Answer:

Macrophages

Explanation:

Macrophages can be defined as a phagocytic leukocyte that can engulf a foreign bacterium.

They are cells found in the immune system as mobile white blood cells that are usually develop in response to a dead or damaged cells and even in cases of an infection.

You might be interested in
I need help with this question (:
Murrr4er [49]
Anaerobic respiration is a function that can provide energy to organisms in place of, or in the absence of oxygen, so choice D. would be accurate.
8 0
3 years ago
Is the brain made up of Neurons itself?<br><br> Please don't answer unless you know the answer
Anuta_ua [19.1K]

Answer:

Yup it is made of neutrons itself composed of both neutrons and glial cells

5 0
3 years ago
The human gene for your muscle protein is different from monkey muscle protein in 4 places and different from a chicken's gene i
Volgvan

Answer:

The human gene for your muscle protein is different from monkey muscle protein in 4 places and different from a chicken's gene in  25 places.

This is molecular biology, and this shows a little bit about evolution because it shows human, monkey and chickens share a common ancestor.

Explanation:

The example shows some features about biology. Molecular biology is focused on all the components and elements of molecular cells. In this case, analysing muscle protein and genes is considering this type biology.

DNA is the origin of every living cell on earth and is unique for every species. The analysis of protein's DNA is a determination of how distant or close species are.

There are many other ways to relate evolution to the different animals, species or cells. You can use fossil record, anatomy, reproductive isolation, embriology, among many others.  

3 0
2 years ago
What changes will the sympathetic nervous system of a rabbit initiate when the rabbit is being chased by a coyote? check all tha
mario62 [17]
The correct answer is: decrease motility in the intestine, dilate bronchioles in lungs, dilate pupils, secrete epinephrine, and speed up heartbeat.

Being chased by a coyote constitutes a highly stressful and threatening situation for the rabbit. This means that the rabbit's physiology will adapt and the body will get prepared for action, that is to run and avoid the coyote.
This response is called an acute stress response (also called fight or flight response) and includes a hormonal cascade. The autonomic nervous system is responsible for the regulation of this response.

All of the changes in the sympathetic nervous system are an effort to boost the body with the necessary energy to run as fast as possible. Some of these adaptations include the dilation the lungs' bronchioles and the speeding up of the heartbeat, in order to accelerate the lung and heart action. Also, the motility of the intestine is decreased to a point where digestion nearly stops, in order for the blood flow to support the muscular action. Finally, one part of the adrenal glands triggers the secretion catecholamines, meaning the norepinephrine and epinephrine hormones.
8 0
3 years ago
A researcher while working in vitro (outside cell) added helicase enzyme which resulted in the untwisting of the DNA helix. But
GREYUIT [131]
The answer is Topoisomerase.

<span>Topoisomerase is an enzyme with the role to regulate the overtwisting or </span>undertwisting<span> of DNA helix. If DNA helix is untwisted, topoisomerases will regulate this situation and will twist DNA helix.</span>

Nuclease<span> is an enzyme that cleaves the sequences of nucleic acids into smaller units.</span>
<span>Telomerase is an enzyme that adds specific sequence to the telomere ends.</span>
7 0
3 years ago
Other questions:
  • 13
    11·2 answers
  • A molecule that blocks the activity of carbonic anhydrase would immediately. . .
    14·2 answers
  • One difference between plant cells and animal cells is that only plant cells have peroxisomes. plant cells lack a cytoskeleton.
    5·1 answer
  • Marie has decided to choose a career in veterinary sciences. However, she wants to specialize in the field of diagnostics. Which
    14·2 answers
  • What best describes the muscular system
    12·1 answer
  • Over the past century, several scientists around the world have made the following observations: New mitochondria and plastids c
    6·2 answers
  • Imagine you are a scientist testing how exercise can affect a persons heart rate. What is the independent variable and the depen
    5·1 answer
  • How did the research presented in the article affect scientists’ understanding of the evolution of eukaryotes.
    9·1 answer
  • Diseases can be caused by many different types of organisms, including protozoa. Which of the following diseases is caused by a
    5·2 answers
  • The layer of the uterine wall that is shed during menstruation is the:.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!