Chapter 5 - Nature of Cells
What is the only exception to a law?
Cell membranes are selectively what?
By diffusion, molecules move from where they are _______ concentrated to where they are ______ concentrated.
more, less
Organelles in plant cells where photosynthesis occurs are called what?
Chloroplasts
The study of organs is called what?
Anatomy
Cells that have a nuclear membrane are called what?
Eukaryotic cells
The ________ is the control center of the cell.
nucleus
The diffusion of water across a cell membrane is what?
osmosis
Centrioles form long whip-like tails called ________.
flagella
DNA and its associated proteins that make up the genes in the chromosomes is called what?
Chromatin
Cells that do not have a nuclear membrane are called what?
Prokaryotic cells
The gel-like liquid material inside of a cell between the outer membrane and the nuclear membrane is called what?
cytoplasm
Water is a ______, and what dissolves into it is called a _______.
solvent, solute
mitochondria
The solution on one side of a plasma membrane that has a higher solute concentration than the other side of the membrane is called what?
Hypertonic
The study of tissues is called what?
Histology
DNA combined with protein molecules form larger what?
chromosomes
A cell is considered ______ when the NaCl solutions are the same concentration on both sides of the cell membrane.
Isotonic
Short, hair-like structures sticking out from a cell membrane that are used for the motion of a cell are what?
cilia
The study of cells is called what?
Cytology
A section of DNA that codes for the sequence of amino acids in a protein or subunit of a protein are what?
genes
_______ _______ is where a cell must use energy to move molecules into and out of cells.
Active transport
Ribosomes attach to an extensive system of flattened membranes called the _______ _______.
endoplasmic reticulum
Membrane-bound structures formed on the ends of the Golgi bodies that contain proteins or other compounds synthesized by a cell are called what?
Vesicles