The work of schleiden and schwann can be summarized by saying that
a
all plants and animals are made of cells
b
all animals are made of cells
c
all plants an animals have specialized cells
d
all plants are made of cells

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

How are fossils used to date organisms?