Answer:
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Explanation:
.Some examples : Sea Otter. The sea otter (shown below) is considered a keystone species as their consumption of sea urchins, preventing the destruction of kelp forests caused by the sea urchin population. ...
.Large Mammalian Predators. ...
.Sea Star
Answer:
D) can allow the production of different proteins from a single gene.
Explanation:
Alternative splicing:
Alternate splicing is also known as alternative RNA splicing, or differential splicing. Alternate splicing is a regulated process during gene expression in which multiple proteins are produced from single gene.
Actually eukaryotic genes have both Intron and exon sequences. Exons are the sequences present inside mRNA which convert into amino acids and produces peptides while introns are the sequences which are spliced (cut) from pre mRNA.
Some time introns for some proteins becomes exons for other proteins in this ways one gene can produce multiple proteins.
From what I remember from my bio class, the answer should be True. Hope this helps :)
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Explanation:
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