(15) Label 1 is D
(16) Label 2 is A
(17) Label 3 is B
(18) Label 4 is C
        
             
        
        
        
<h2>Answer</h2>
Naegleria fowleri is the causative pathogen in the rare and fatal form of meningitis called <u>primary amoebic meningoencephalitis</u><u> </u><u>(</u><u> </u><u>PAM </u><u>)</u>
<h3>#CarryOnLearning</h3>

 
        
        
        
Answer:
Thymine
Explanation:
Adenine is a Purines together with Guanine .
Purines always pair with Pyrimidines ; which are cyosine and Thymine.
This is a complementary base pairing that hold the two strands of DNA bases together by weak hydrogen bonds for flexibility and easily unwind during replication
Purines are larger in size beaxuae they have 2 ring structures while Pyrimidines aee smaller because of one ring structure.
Therefore two purines (Adenine and Guanine can not pair together;
It must be a Purines -Pyrimidines pairs.
Therefore Adenine must pair with Thymine and cyosine with Guanine
In RNA, Thymine are replaced with URACIL as Pyrimidines.
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The correct answer is: Free ribosomes are located in the cytoplasm, whereas attached ribosomes are embedded on the endoplasmic reticulum.
 
<span>Free ribosomes produce proteins which are released into the cytosol and used within the cell. On the other hand, attached (membrane-bound) ribosomes synthesize proteins that are needed within the plasma membrane or are released from the cell. The newly synthesized polypeptide chains are inserted directly into the endoplasmic reticulum by the attached ribosome and are then transported to their destinations where they will be secreted. </span>
 
        
             
        
        
        
They are related because energy cycles consist of energy and growth cycles also need energy so they can work