1.
which of the following is a function of the
nucleus?
(1 point)
ostores dna
ostores sugars
obuilds proteins
opackages proteins

Stores DNA

Explanation: The nucleus is a very important organelle for eukaryotic cells because there is store the DNA that is the genetic material and contains instructions to produce RNA and build proteins. That DNA can be in the nucleus asociated with proteins called hystones and can be relax or condensed and that depends upon the cell cycle.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse