C) K ( potassium)
Explanation:
Small non-charged molecules like CO2, H2O, O2 can pass through the membrane freely.
But others such as K+ require specific potassium bumps throughout the membrane. Which acts to transport Na+ and K+ cross the membrane.
Answer:
1) A double Helix with complementary bases in the middle. The backbone is made of sugar and phosphates. The middle is bases
2) To hold the genetic info for the cell
3) To bring the genetic info from the nucleus to the ribosomes as DNA can't leave the nucleus
4) To bring amino acids to the ribosomes to help build a protein
5) A chain of amino acids held together by peptide bonds
6) Ribosomes
7) Because those are the bases that are complementary in DNA so they must be equal
8) It could lead to a mutation as it would cause the mRNA to code for a different amino acid and thus a different protein will be made
9) DNA is the blueprint for mRNA which will travel to the ribosomes and code for specific amino acids which will eventually build a protein
I believe the answer is either B or D it could be b
Climate variations- averaged by using weather conditions from past years. Climate variability varies by seasons, because some seasons get colder than others. Maybe there could be more precipitation in the atmosphere, therefore making it easier to calculate rainfall in the future. makes people be aware of storms that are coming so that they will be prepared for whatever is coming their way