The main function of tRNA is to __________________________.
The answer to this question is
<span>A-transfer amino acids to the site of protein synthesis </span>
Answer:
A gene is a small section of DNA on a chromosome that codes for a particular sequence of amino acids, to make a specific protein. It is the unit of heredity, and may be copied and passed on to the next generation.
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The statement 'enzymes work by raising the energy of activation' is NOT true about the enzymatic activity. These proteins lower this energy.
<h3>Enzymes and activation energy</h3>
Enzymes are proteins capable of catalyzing specific chemical reactions in a given medium.
Enzymes work by lowering (instead of increasing) the activation energy of a chemical reaction.
Enzymes help to convert one or more reactants into specific products of the reaction that they catalyze.
Learn more about enzymes here:
brainly.com/question/1596855
Answer: All the statements of the question are correct.
Sickle cell disease is an autosomal recessive disorder that is characterized by formation of defective hemoglobin protein, which results in sickle shaped RBC ( red blood cell).
This disease is caused by mutation in the gene that is responsible for the protein hemoglobin ( which transport oxygen throughout body).
It is inherited by the offspring when both the mutated copy of genes ( one from each parent) are passed to him.
Carriers of the disease exhibit increased resistance to malarial parasites by controlling the level of free haem in the blood ( through enzyme heme oxygenase that produces a toxic carbon monoxide gas). The resistance thus developed, is a mutation.
Therefore, all the statements in the given question are correct.
The answer is D. That is what physics textbooks say.
