The protein molecule that occurs in red blood cells and binds to oxygen molecules is called
A) valine.
B) hemoglobin.
C) proline.
D) the cell membrane.
E) the ribosomes.
Correct Answer:
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Q8: Gametes are
A)egg and sperm cells.
B)also called zygotes.
C)the
Q9: A segment of DNA that specifies the
Q10: Cells
A)are the basic units of life.
B)usually do
Q11: The two basic types of eukaryotic cells
Q12: The substitution of one DNA base for
Q14: Enzymes
A)are amino acids.
B)are major constituents of body
Q15: Somatic cells are
A)one type of prokaryotic cells.
B)gametes.
C)the
Q16: DNA
A)is single-stranded.
B)is composed of nitrogenous bases, sugars,
Q17: A zygote
A)is formed by the union of
Q18: Which of the following is NOT a
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