By carrying substances to cells and waste products away from cells.
Explanation:
Biological macromolecule
A large, organic molecule such as carbohydrates, lipids, proteins, and nucleic acids.
Great question!
Before genetic engineering, people who needed insulin to survive (diabetics) had to obtain their insulin from pancreases of pigs! When pigs were slaughtered, they removed the pancreas to take out the insulin. Expensive, time consuming - and for jews, not kosher!
Genetic engineering changed all this - they have cloned the gene for human insulin into a plasmid which they then express in the bacterium Escherichia coli (E. coli). The E. coli makes A LOT of insulin this way - it's made in a stainless steel fermentor (think of how they brew beer) - and it is easily purified. So, now there is human insulin (not pig - so kosher!) and is made fast and cheap!!! No need to slaughter an animal for this anymore!
Answer:
No
Explanation:
Animals can not perform photosynthesis. Plants are the only things that can perform photosynthesis. They have special cells designed to perform the process. No human or animals can perform photosynthesis. They have to find food on their own.
C. Alfred Hershey and Martha Chase
