21. Select all accurate statements
A. All chordates have pharyngeal slits or clefts that function in swimming.
B. All chordates will have a muscular post-an*l tail as adults
C. All chordates will have a notochord during a stage in embryonic development
D. All chordates are bilaterally symmetrical animals that have a vertebral column
E. All chordates have a ventral, hollow nerve cord

Protein synthesis actually begins in the nucleus when transcribes a single gene on the dna molecule is copied. the process of copying this gene is called this copy is known as and contains the protein building instructions. this copy is sent out into the cytoplasm to the part of the cell known as the the of the ribosome will join together to form a functional ribosome when they attach to the mrna. as the mrna moves through the ribosome, the message is read by transfer rna brings the correct back to the ribosome. the amino acids are placed in the correct order and are hitched together by

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen