Marla investigates the properties of an unknown, clear liquid that she thinks is water. she lowers the temperature of the liquid to the freezing point of water. the liquid does not become solid. marla is still convinced the unknown liquid is water. she wonders if the water may have salt in it. how would salt in the water explain her result?
a. salt causes the water to evaporate.
b. salt dissolves in water to it become a solid.
c. salt lowers the freezing point of water.
d. salt raises the temperature of the water.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.

Were you able to observe the nucleolus in any of the cells if so which ones