The answer is B. Strengthens the
cell wall to allow plants to stand up straight and tall
Lignin is a polymer that
constitutes the cell walls of all vascular plants. It provides the mechanical
support for plants and it supplies the strength and rigidity of plant cell walls.
Structural strength provided by lignin helps large trees to reach heights in
excess of 100 m. In the absence of lignin these trees would collapse on themselves.
Answer:
Partial profiles will match up with many more people than a full profile. And even full profiles may match with a person other than the culprit. Further complicating matters, a single DNA profile might be mistakenly generated when samples from multiple people are accidentally combined.
Explanation:
No
Hope it's help you ...........
The correct answer is A
The scientist can determine that this nucleic acid is a DNA molecule, because it contains Thymine, which does not occure in the RNA molecule. The RNA molecule contains Adenine, Guanine and Cytosine just like the DNA, but unlike the DNA it contains Uracil, not Thymine.
Secondly, the scientist can say with certainty that this DNA molecule is surrounded by a nucleus based on the structure of the nucleic acid described. Only eukaryotic cells have ladder structure. The prokaryotic cells have circular DNA and do not have any organelles, like the nucleus. Therefore, from the ladder structure of the DNA the scientist can see that the cell has a nucleus.
Yup 12 is the answer. Gametes and half of the amount of the original