Answer: The lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell. The fluid inside the membrane buffers the chemical reactions taking place inside the cell.
Explanation:
Answer:
An organisum that lives inside.
Explanation:
noun. a type of symbiosis in which one organism lives inside the other, the two typically behaving as a single organism. It is believed to be the means by which such organelles as mitochondria and chloroplasts arose within eukaryotic cells.
The repressor molecule is a DNA or RNA binding protein. A DNA-binding repressor blocks the attachment of RNA polymerase, the enzyme that brings the formation of DNA and RNA, to the promoter, and prevents the transcription of genes into messenger RNA.
Answer: Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements.
Explanation:
It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere.
C. An warm front I think it’s the answer
