A host organism be it a single bacterium or a human cell
Answer:
First two rings are thicker while the last two rings are thinner.
Explanation:
Due to the first two years of optimal growing conditions received by the tree, the width of trunk of the tree is thicker but due to drought conditions experienced by the tree during the most recent two years, there is very little increase occur in the width of the trunk because the tree is in stress condition and for that reason the ring of trunk is thinner as compared to first two years.
Answer:
DNA does not usually exist as a single strand, but instead as a pair of strands that are held tightly together. These two long strands coil around each other, in the shape of a double helix.
Answer: a cell membrane
Explanation: But remember that bacteria do have their DNA inside their protein envelope. They don’t have a nucleus, but they do have DNA making them also have the ability to reproduce.