Important muscle electrical signals is the movement of charged material (ions) across cellular membranes in a limited area
Answer:
They can breathe in oxygen.
Explanation:
By letting it flow over there gills it helps them make oxygen.
Answer:
The ultimate level of causation refers to the behavior’s evolutionary significance; how the behavior enhances reproductive fitness. The proximate cause refers to the immediate cause of a behavior, whether that be hormonal, neurological, cognitive, interpersonal, or cultural. For example, the proximate cause of humans eating more cookies, cake, and ice cream involves the psychological tendency to desire and enjoy foods with high sugar and fat content. The ultimate cause involves the high caloric content of both sweet and high fat foods, which promotes physical survival in resource-scarce environments.
Answer: Option D) Hold the cell membrane together
Explanation:
RNA also known as ribonucleic acid plays vital role in protein synthesis. It is divided into:
- mRNA used in carry coded messages from the nucleus to the ribosome
- rRNA (ribosomal RNA) that make up a portion of the ribosome, and provide site for protein synthesis.
- tRNA (transfer RNA) that Carry amino acids to the ribosome
Thus, since the RNA is found inside the nucleus, it is not responsible for holding the cell membrane together.
