If it contians 1/16th the amount, it must have gone through 4 half lives: 1> 1/2> 1/4> 1/8> 1/16>.since the half-life of c-14 is about 5730 years, the age of the fossil is 4 X 5730 years or about 22,920 years old.
Answer:
b. genes have no difficulty crossing the species barrier.
Explanation:
DNA is a universal molecule, by now it is known that has the same structure in pigs, birds, an other living things.
When a gene is transfer to other species, the most difficult action is that the living thing that is the receptor, can adopt this new sequence of DNA and reproduce it again as part of the new DNA.
In some examples like in pigs and humans, we are so closely that you can use some DNA pigs or tissues to replace in humans when is neccesary in a surgery.
Answer:
The property of some metabolic pathways that enables them to serve multiple functions in the breakdown, synthesis, and conversion of metabolites is known as <u>amphibolism.</u>
Explanation:
Amphibolic pathways are the biochemical pathways which have both catabolic (breakdown ,conversion to metabolites) and anabolic functions (synthesis)
<u>For example:</u>
- Pentose Phosphate Pathway
- TCA cycle
- Embden-Meyerhof pathway
Answer:
Parasitism
Explanation:
in a parasitic relationship, the parasite attaches to the host causing it harm for its own benefit
