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My name is Ann [436]
3 years ago
14

Research has indicated that during the inflammatory response to P. acnes, both the classical and the alternative complement path

ways are activated. Which of the following are outcomes of activating complement pathways?
Select all that apply.

A. activation of T cytotoxic cells
B. inflammation
C. generation of antibodies against P. acnes
D. opsonization
E. cytolysis
Biology
1 answer:
UNO [17]3 years ago
6 0

Answer:

The correct answers are options B, D and E.

Explanation:

One of the essential parts of the innate immune system is the complement system. This system performs an essential function in elevating the tendency of antibodies and phagocytic cells to eliminate the pathogens. There are three biochemical pathways, which instigate the complement system that comprises the classical, alternative, and lectin complement pathway.  

The fundamental activities of the complement system are opsonization, cell lysis, chemotaxis, and agglutination. The process of cytolysis takes place through the complement pathway by the generation of membrane attack complex in the raiding cells. The complement pathway also leads to inflammation.  

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The Neanderthal copy of a gene crucial for language (FOXP2) more closely resembles the same gene in chimpanzees than in humans,
liraira [26]

Answer:

b. False

Explanation:

FOXP2 gene is required for language and speech development and is present in all animals. It is a transcription factor which encodes for a regulatory protein. Both modern humans and Neanderthals share FOXP2 gene which differs from chimpanzee version by two amino acids. Its the different regulation of the same gene which made modern humans more capable of  using language and speech. Neanderthals did use language rudiments but not completely constructed languages. There might be other speech genes involved too which differed between modern day humans and Neanderthals but not FOXP2.

3 0
3 years ago
Do you think the wings of a Galapagos cormorant are vestigial structures?
Inga [223]

Answer:

The Galapagos cormorant has vestigial wings that don't help it to fly or swim, though the birds still dry them off in the sun after they get wet, just as if they would if they still could use them to fly. This species diverged into a flightless bird about 2 million years ago.

Explanation:

3 0
3 years ago
Why are indexes better than simple measurements for comparing fossil specimens?
timurjin [86]
They are better because they are for comparative use for instance hair color to finger nails they both grow but onto separate parts of the body. 

Hope this helps [: 
5 0
3 years ago
What kind of energy heats our school in winter?
LiRa [457]
Thermal energy/ heat energy
4 0
3 years ago
How does air pressure affect weather
UNO [17]

Answer:

<em>Hewo, Kiluawa (sorry if i spelled it wrong) </em>

Explanation:

High Pressure

Basically, high pressure occurs in an area if the atmosphere over that particular area becomes heavier. As a result, the heavy air above will come down to the Earth’s surface. And the air present in that area will move away to create space for the heavy air.

Commonly, the warmer months experience high pressure. You’re more likely to enjoy a comparatively dry and stable weather pattern in those months. Besides, you’ll find the skies in high pressure areas very clear. You’ll also feel a gentle breeze there that will cool down the surrounding areas.

Low Pressure

On the other hand, the air above a low pressure area is comparatively much lighter than the air below. As the heavy air on the Earth’s surface cannot go further below, it pushes away the lighter air above. As a result, a vacuum is created on the surface level and the air in the surrounding areas rushes towards it to fill up the void space.

Meanwhile, the rising air starts to cool down and form clouds in the sky. These clouds then come down to the Earth in the form of rain. Sometimes, snow is also formed depending on the temperature of the surrounding areas.

In general, colder months of the year experiences more low pressure situations. By now, you probably can guess why. The cold air on the surface level is heavier than the air above. And these low pressure areas are the reasons behind unstable weather conditions like snow, ice, rain, storm, etc.

Hope This Helps!

5 0
3 years ago
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