The answer to this question is:
<span>Michelle is observing a sand sample under a microscope when she finds many perforated shelled organisms. Further testing reveals that these shells are made of calcium carbonate. How should she classify these organisms?
</span>"<span>They are foraminiferans, belonging to phylum sarcodina of protozoa."
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Hoped This Helped, </span><span>
Ariwillow36
Your Welcome :) </span>
        
                    
             
        
        
        
Answer:
A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). 
Explanation:
This is a dehydration synthesis reaction (also known as a condensation reaction), and usually occurs between amino acids.
 
        
             
        
        
        
Answer: B-cells fight bacteria and viruses by making y-shaped proteins called antibodies, which are specific to each pathogen and are able to lock onto the surface of an invading cell and mark it for destruction by other immune cells. C-cells are a virus-bound antibody that binds to receptors, on the surface of phagocytic cells and triggers a mechanism known as phagocytosis, by which the cell engulfs and destroys the virus. 
Explanation: sorry this answer was not simple at all -_-
 
        
             
        
        
        
Chromosome non-disjunction, anaphase lag and endoreplication
        
             
        
        
        
TT (is T is the letter you're using)
Homozygous means it has the same allele for a trait