Answer:
Hey
In science, we have facts, theories, and hypotheses. They all mean something different.
A hypothesis is a complete guess to a problem, and it can't be said that it is correct unless more evidence is found. A good example for this would be the question to "how did the universe get here?" Of course, there are many different hypotheses to this, such as the multiverse theory and also god.
A theory is different than a hypothesis. Many people think that a theory is always wrong and is just a guess (sounds similar to a hypothesis doesn't it.) Well, that's wrong. A theory is an idea about a scientific phenomenon that has sufficient evidence and is said to be the most likely possibility. A good example would be Einstiene's theory of relitavity. Today we know that it is true. The difference between a theory and fact is that a theory could be wrong, That is if there are other theories with as much or more evidence.
There isin't much to say about facts. all I can say is that it is a true statement about a scientific phenomena.
I wrote all that^.
Their valence electrons don't give them the ability to bond, they are also not in need to any electrons, since they won't get an octet soon.
Look at periodic table and their group number
Calcium - 2
Carbon - 4
Sulfur- 6
Answer:
c. a phosphodiester bond between the 3' and 5' hydroxyl groups of neighboring sugars
Explanation:
Phosphodiester bond is the bond which is formed between the hydroxyl group of one nucleotide to the phosphate group of the another nucleotide. These are ester bonds. These bonds are central to all the life which is in existence on Earth. These bonds forms the backbone of the strands of the nucleic acid.
The bond is formed by the linkage of 3' carbon atom of one of the sugar unit to the 5' carbon atom of the another succeeding sugar unit.
<u>Hence, the answer is:- c. a phosphodiester bond between the 3' and 5' hydroxyl groups of neighboring sugars</u>
Answer: four , double
Explanation:
Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms. The general formula for these hydrocarbons is 
Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is 
and 
Butene is 
has molecular formula of 
and thus has four carbon atoms and one double bond or pi bond.
