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Chapter 3 Key Terms part 1

Horizontales
The most prominent organelle inside the cell; it houses the chromosomes that contain the genetic information.
The place where many proteins acquire their final structure.
Outer boundary of the cell body, where the cell encounters its environment.
In meiosis, the stage in the second round of cell division when chromosomes line u in single file in the middle of the cell.
Specialized structure in eukaryotic cells.
A series of membrane fold located near the nucleus; smooth endoplasmic reticulum handles the synthesis of fats and lipids, and rough endoplasmic reticulum produces proteins.
The realization that all living organisms are made of cells; it was first proposed in 1839 by Matthias Schleiden and Theodor Schwann.
The stage of development that follow s the embryo.
An organ that connects a develooping fetus to the mother's uterine wall and provides for an exchange of nutrients and waste elimination.
In meiosis, the stage in the first round of cell division when paired chromosomes separate and move to opposite poles, leaving a haploid set of chromosomes on each side of the cell.
A special type of cell division that produces eggs or sperm.
In meiosis, the stage in the second round of cell division when chromosomes , still in their compact form, attach to the newly formed spindle.
The most basic unit of life.
Verticales
Produces important molecules and delivers them to key locations within and outside the cell; cibsusts of the endoplasmic reticulum, the Golgi apparatus, and lysosomes.
Formed from the microtubules of cytoskeleton, this is a structure that helps to distribute chromosomes to new cells.
In meiosis, the stage in the second round of cell division when the two chromatids of each chromosome detach from each other and move to opposite ends of the cell; each half of the cell has a complete haploid set of chromosomes.
One in a pair of chromosomes.
Digests waste materials and wornout organelles and recycles the molecules so they can be reused.
The development of cells into embryos and bodies that are able to perform the tasks necessary for life.
A cell with just one set of chromosomes.
Inmeiosis, the stage in the first round of cel division when paired chromosomes line up in single file down the middle of the cell.
In meiosis, the stage in the first round of cell division when the chromosomes become shorter and thicker and line up with their homologues.
A viscous substance in a cell where small molecules are dissolved and organelles are embedded.
Sac in which the embryo is suspended.
Female sex organ where eggs are produced.