Answer:
A double layer — a bilayer — of lipid molecules forms the basic unit from which cell membranes are constructed
Explanation:
Since it is acidic it will turn litmus paper blue and taste sweet
Answer:
By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Explanation:
Answer:
B: sample 4
Explanation:
This is because amino acids are basic units for proteins
