C. Two pieces of continental crust meeting at a convergent boundary
b. Cell membrane
Explanation:
Homeostasis is a set of conditions where an organism will function best. Every organism works hard in order to attain homeostasis and cell membranes play an important part in maintaining homeostasis.
The function of a cell membrane is to control the materials of coming in or out of the call. The cell membrane decides if that specific material will enter the cell or not based on the optimal concentration level.
Answer:
His studies focus on the evolution of cis-regulatory elements in the regulation of gene expression in the context of biological development, using Drosophila as a model system.
Answer:
Bacteria are more diverse and widespread
Explanation:
Bacteria are more diverse and widespread, Archaea are mostly confined to extreme environments. Organisms in Domain Eukarya (plants, animals, fungi, and several kingdoms or protists) all have more complex eukaryotic cells containing a nucleus and other organelles.
Answer: The reason is because DNA polymerase which is the enzyme that catalyzes the synthesis of DNA has a 3'->5' exonuclease activity that double-checks each nucleotide after it is added.
Explanation: The 3'->5' exonuclease activity of DNA polymerase allows the enzyme to double-check and remove a newly added wrong nucleotide. It is highly specific for mismatched base pairs. When the DNA polymerase adds a wrong nucleotide to the growing strand, translocation of the enzyme to the position where the next nucleotide is to be added is halted, but the exonuclease activity of the DNA polymerase removes the incorrectly paired nucleotide so that replication can continue. The process of double-checking a newly added nucleotide and removal of any incorrectly paired nucleotide by the DNA polymerase is called proofreading.