A. to find out if a hypothesis is correct.
Answer:
Option C, shared DNA sequences
Explanation:
Complete question -
What evidence suggests that vertebrates are more closely related to echinoderms than are any other invertebrate phyla?
- shared patterns of development
- shared morphology
- shared DNA sequences
Solution
Vertebrates have true backbone while invertebrates lack true backbone. Among the invertebrates, the echinoderm phylum is closely related to vertebrates as the echinoderm possesses notochord (similar to backbone) during their early stage development which disappears later.
Through the genomic sequence studies it has been found that echinoderms are similar to vertebrates in many ways. Echinoderms have diverged from deuterostomes along with human and hence pose some genetic similarity which can be devised through study of common DNA sequences
Hence, option C is correct
Answer:
The change in PH not only effect the shape of enzymes, but it may also change properties the of substrate so that that substrate cannot control to bind the active site and it cannot undergo catalysis.
In general enzymes have a PH optimum. However this optimum is not same for each enzyme.
Explanation:
For Example; The enzyme pepsin is most active at an acidic PH, Whereas the enzyme trypsin performs best at slightly alkaline PH. the increase or decrease in PH can change the concentration of ion in a solution
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The corridors are a proposed solution to enhance the species survival by effectively creating a large preserve from several smaller ones. The different patches of the forest lands are separated by the human activities, turning them into agricultural land, highways, or housing communities. This affects the migrating behaviors of the animals living in these forests patches. By connecting these separated patches by building corridors will solve this problem, and help conserve the species.
Hence, the answer is 'corridor'.
