A specific cell is unable to make the enzyme helicase. Because of this dehiclency, what would the cell most directly be unable to accomplish? -The cell would not be able to fix mistakes in the DNA.
-The cell would not be able to add the primer to the DNA strand.
-The cell would not be able to unzip the double hellx.
-The cell would not be able to add new nucleotides

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Will mark branliest. the theory of plate tectonics was developed with the contribution of scientists from many different disciplines. which of the following is a contribution from geophysicists?

Individuals do not compete directly for resources, but are prey for the same predator