Which of the following organelles are only found in plant cells and not in animal cells? 1. cell wall, 2. mitochondria, 3. chloroplasts, 4. nucleus a) 1 & 4 b) 1 & 3 c) 2 & 4 d) 2 & 3

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

The first amino acid of a new polypeptide chain is