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gulaghasi [49]
2 years ago
6

What is an animal cell??

Biology
1 answer:
Phoenix [80]2 years ago
3 0
A a pyrocrat that make up the animal filled wit bluud
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Describe the most common molecular mechanism for recessively inherited human genetic diseases such as cystic fibrosis.
Marta_Voda [28]

Answer:

Explanation:

cystic fibrosis is an autosomal recessive disorder. When the child receives the defective gene from both of his parents, he suffers from cystic fibrosis. Because his parents are carriers. In recessive genetic disorder, the genes will be expressed when both recessive genes are present in one person. The person suffering from this disease have a lung infection and pancreatic dysfunction.  

In this cystic fibrosis, genes are located in chromosome 7. The effective gene is the CFTR gene. The CFTR gene is present in the DNA and by transcription, this forms CFTR protein. This is a channel protein and transports chloride ion.

This CFTR protein transports chloride ions and it makes a balance in the cell membrane. These genes are commonly present in the epithelial cells. Outside the epithelial mucus is present to keep the cells moist.

The epithelium gets a lack of water and chloride due to the defect. Therefore cells need CFTR proteins also. This causes lung infection and pancreatic disorder.

6 0
3 years ago
Which statement best describes energy of an ecosystem?
vlabodo [156]

The energy of the ecosystem can be best described as option C. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.



6 0
3 years ago
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The primary neurotransmitter at the neuromuscular junction is
aleksandrvk [35]

Answer:

<u>acetylcholine</u>

Explanation:

In the pre-synaptic knob there are vesicles which contain a transmitter substance called acetylcholine. When an impulse reaches the synaptic knob, it stimulates the vesicles to move towards the pre-synaptic membrane releasing the acetylcholine.

The transmitter substance makes the membrane permeable. The neuromuscular junction contains the sensory neurone(afferent), motor neurones(efferent) and the relay neurones(connector).

5 0
3 years ago
Describe how a person's activity level can affect their health
Evgesh-ka [11]

It really can. Just trust me!

8 0
3 years ago
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All are ways to combat water pollution except?? (A) regulation for water usage in urban areas (B) dumping oil down the drain (C)
Zina [86]
The answer is the letter c
8 0
3 years ago
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