Biogeography is the study of geographical distribution of fossils, various species (plants and animals) and ecosystems throughout geological time and space
The rough er is connected to the plasma membrane
<span>Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.</span>
Explanation:
The endomembrane system (endo- = “within”) is a group of membranes and organelles in eukaryotic cells that works together to modify, package, and transport lipids and proteins. It includes a variety of organelles, such as the nuclear envelope and lysosomes, which you may already know, and the endoplasmic reticulum and Golgi apparatus, which we will cover shortly.
Although it's not technically inside the cell, the plasma membrane is also part of the endomembrane system. As we'll see, the plasma membrane interacts with the other endomembrane organelles, and it's the site where secreted proteins (like the pancreatic enzymes in the intro) are exported. Important note: the endomembrane system does not include mitochondria, chloroplasts, or peroxisomes.
Let's take a closer look at the different parts of the endomembrane system and how they function in the shipping of proteins and lipids.
The climate in Singapore is equatorial, ie hot, humid and rainy, throughout the year. The country, which is at the same time an island, a city and a state, is actually at the Equator, in an area where there is always the opportunity for the formation of showers and thunderstorms.
Although the climate is fairly uniform, you may notice some changes in the course of the year, due to the two monsoons: the one from the north-east, occurring from November to early March, is more rainy especially in the first part, and the one from the south-west, occurring from June to September. The first period between the two monsoon, from March to early June, is the hottest and the most unpleasant of the year.
