An animal's circulatory system should contain all of the following EXCEPT
a. blood to transport carbon dioxide and oxygen.
b. blood vessels leading away from the heart.
c. blood vessels leading to the heart.
d. a heart to pump the blood.
e. nitrogen to transport wastes
E
You might also like to view...
Define capillaries
What will be an ideal response?
A transgenic organism is one that
A) changes gene frequency over time. B) provides gene information to another organism. C) changes gender over time. D) has received genetic information from another organism.
________ must be added to a PCR to direct the polymerase where to begin synthesis
Fill in the blank(s) with correct word
Because all organisms synthesize protein, the DNA nucleotide sequences coding for _____ have been highly
conserved during evolution. a. tRNA b. rRNA c. mRNA d. snRNA e. SRP RNA