Answer:
1.) stromatolites
2.) photosynthesis
3.) Ordovician
4.) Cambrian
5.) oxygen
6.) As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.
7.) Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.
Explanation:
From Penn
Answer:
The given statement is true.
Explanation:
The enactment of the Environmental Policy Act or the EPA in 1969 was done to monitor the issues of the environment that took place in the 1960s. It was the major and the primary law, which was postulated at that time to solve environmental issues in the United States. The enactment of the EPA law was done for various reasons, some of which are as follows:
1. To better the health of human beings.
2. To generate harmony between nature and humans.
3. To encourage efforts to reduce destruction to the environment.
Answer:
Nucleic acids are of two types DNA and RNA which are made up of monomeric units called nucleotides.
One monomer is one nucleotide which further consists of three parts:
1: Nitrogenous base
2: Sugar (a ribose sugar in RNA and a deoxyribose sugar in DNA)
3: Phosphate group
Explanation:
If we talk about single strand of nucleic acid DNA or RNA, there is a phosphodiester linkage that holds monomers together in a strand of nucleic acids. This phospho di ester linkage is formed when a condensation reaction occurs between a hydroxyl group of two sugars and a phosphate group.
You can see a better representation in attached figure.
Hope it help!
This is more common sense rather than biology, but talking to someone would slow it down, so you know it’s not c or e. The best idea is b
Answer:
The chemical formular of amylose is( C6H10O5)n, Where the value of n= ranges from 300- 3000.These element are held together by alpha 1-4 glycosidic bonds in starch molecule( which contains amylose and amylopectin.) Both molecules are the chemical build up of starch.
Since water molecules are formed from the combination of OH and H atoms from each of the glucose molecule, with each of the glucose molecules either given out OH, H, OH, H atoms, as there are 4 glucose molecules, and 3 water molecules can be formed from 4-glucose molecule, Hence 3 water molecules will be liberated during condensation.
Explanation:
