Humans obtain nitrogen by eating other organisms.
Answer:
D. All cells must be reproduced by another cell.
Explanation:
The cell theory has a couple key components, which are as follows:
#1. Cells are the basic unit of life.
#2. Cells have hereditary data that is passed down to their offspring.
#3. All cells come from preexisting cells.
#4. All organisms, both unicellular and multicellular, are made of one or more cells.
#5. Energy flows through cells.
#6. All cells have a similar composition.
Answer:
Lions need to blend in their surrounding, but cows don't. ... What adaptation helps a camel to survive in the desert?
Explanation:
Answer:
The two strands of DNA need to be separated so new bases can pair with each template strand. What is the significance of the sequence of nucleotides? It determines the type of protein being produced.
