The ER makes proteins and the nucleus holds the DNA of the cell. So proteins are manufactured according to instructions encoded in the genes in the nucleus. These genes are now transcripted into RNA then leaves the nucleus and interacts with ribosomes on the ER, which now links amino acids together to form protein chains. The Cell Membrane is a selective barrier on the boundary of every cell. Its function is to allow the passage of oxygen, nutrients, and wastes to service the entire volume of th cell. The lysosomes are digestive organelles where macromolecules and other wastes are hydrolyzed by enzymes. Their main function is to process the molecules taken in through the cell membrane and to recycle won out cell parts. After ribosome synthesize proteins, the proteins are transported into the rough E.R. Then, proteins are enclosed into a vesicle and transported to the golgi apparatus, where processing, packaging, and transport of proteins is done. After the protein is processed, it will then bud off from the golgi apparatus (as vesicles) and transport to wherever it is needed. The nucleus is responsible for making the RNA, which is then sent to the E.R. Next, the E.R. sends the RNA to the ribosomes, where they link amino acids together to form protein chains. The E.R gets the RNA from the nucleus and sends it to the ribosomes to make proteins. The rough E.R specializes in protein synthesis, which means the ribosomes will attach to the E.R and synthesize the proteins. Next, the proteins enter the lumen space (interior of E.R) where they can be modified. Lastly, the proteins are sent off to the lumen of the smooth E.R.
Answer:
To study ancient climates using ice, scientists use data from polar mountain glaciers.
Explanation:
From the analysis and interpretation of natural traces, scientists describe the climate for hundreds to millions of years. Data derived from tree rings, ice cores, corals and ocean sediments, caves, among others, are observed. It is possible to gather these data with geophysical or biological measurements and some reconstructed climatic variables, such as temperature and rain level.
Polar mountain glacier data can be analyzed in laboratories to measure the amount of oxygen and methane, in addition to other parameters that help to indicate climatic variations. NASA researchers started Paleoclimatology in the 19th century, studying precisely the expansion of ice caps.
I think it’s A because electrons actually taken up by oxygen molecules to make water.
