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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 />
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True or false (Gravity is an example of a non-contact force.)
schepotkina [342]

Answer:true

Explanation:

Gravity is non contact

7 0
3 years ago
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BRAINLIESTTT ASAP!!!!
Igoryamba

When animals undergo the process of cellular respiration, they release carbon dioxide into the atmosphere. And when animals die and start to decay aided by organisms called decomposers, carbon dioxide is also emitted into the atmosphere. When humans burn fossil fuels, carbon dioxide yet again enters the atmosphere. 

<em>hope this helps ;)</em>

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3 years ago
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Which could result from a person who does not finish the prescribed amount of antibiotics for an infection?
irakobra [83]
The infection could overtake the whole body and could even shut down the body killing everything in the body.
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3 years ago
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A pure-breeding fruit fly with curled wings mates with a pure-breeding fruit fly with normal (straight) wings. The F1 mate with
vesna_86 [32]

Answer:

The dominant curled wing allele is also a recessive lethal.

Explanation:

If we look at the F2 ratio we see that :  

curled wings: straight wings= 160:80

                                               =2:1

Hence,  if curled wings is considered to be a dominant trait then Curled wings * straight wings

Dd x dd

Punnet square will be as follows :

           d                    d

D   |    Dd   |        Dd

d    |    Dd   |        dd

Hence in order to get F2

Dd x dd

Punnet square will be the same as above if the F1 cross is Dd* Dd

        D    d

D DD Dd

d Dd dd

if DD is lethal then the ratio is

Dd:dd=2:1

that is curled wings: straight wings=2:1

Hence, The dominant curled wing allele is also a recessive lethal.

6 0
3 years ago
You will measure and compare the heart rates of ten learners before and after
rewona [7]

Answer:

Exercise is responsible for the increasing heart beat.

Explanation:

Exercise is responsible for the increasing heart beat because our body needs oxygen more faster during exercise. When we exercise our body needs quick energy and oxygen which can be provided by heart as well as the heart also removes carbondioxide which is produces during respiration process so the heart beat increases in order to provide energy and oxygen to the muscles.

8 0
3 years ago
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