How many shapes do protein have?

How many types of proteins does membrane contain?

There are 160 pages in a book 15% of the pages have pictures on them. How many pages do not have pictures on them?

How many vertabraes do you have?

How many chambers do the hearts of fish, amphibians and mamals have?

How many bones do humans have in the body?

How many incisors do you have in the upper and lower jaw.

These do not have shape

How many straight lines do you have with slope 1 ?