Answer:
<u>B) 3 amino acids joined by 2 peptide bonds</u>
Explanation:
The general formula of amino acids:
<u>R-CH(NH2)-COOH </u>
It can be seen clearly in the attached image that there are three amino acid molecules.
Now the three molecules of amino acids are joined by 2 peptide bonds.
<u>Peptide bond: </u> a bond formed between first carbon of one amino acid and nitrogen of another amino acid releasing a water molecule( H2O).
The difference between a controlled variable and a constant is that a constant variable does not change through the experiment and a controlled variable can change.
Answer:
Natural and Basic resources.
they are needed by plants to grow