Human Anatomy Chapter 3 Cells
Terms in this set (33)
The study of cells.
What are the two main parts of a cell?
Nucleus & Cytoplasm
Function of endoplasmic reticulum?
Function of mitochondria?
The "powerhouse" of the cell.
Function of ribosomes?
Function of the nucleolus?
Function of microfilaments?
Involved in cellular movement. (muscles)
Function of microtubules?
Larger than filaments, maintains shapes. (skeleton of the cell)
Function of lysosomes
Contains digestive enzymes to break down substances, microorganisms, damaged or worn out cell parts.
Move into the cell.
Move out of the cell.
Molecules diffuse through a membrane by means of a carrier molecule.
Molecules move spontaneously from areas of high concentration to low concentration.
The diffusion of water through a selectively permeable membrane.
What is active transport?
Molecules move against concentration gradient, requires cell energy and carrier molecule.
What is passive transport?
Molecules move without requiring cell energy. Diffusion or facilitated diffusion.
Describe the process of making and exporting protein from a cell.
Ribosomes make the protein and the Endoplasmic Reticulum exports.
Describe the cell membrane, its properties, and it's function.
Thin, outpoching, infolding, & porous; Controls what enters and exits the cell
Describe what differentiation is.
A cell maturing.
List the phases of mitosis.
Prophase, Metaphase, Anaphase, Telophase. PMAT
What occurs in Prophase?
Chromosomes become visible, centrioles to poles, nuclear membrane disappears,and spindles form.
What occurs in Metaphase?
Chromosomes line up, spindle attaches.
What occurs in Anaphase?
What occurs in Telophase?
Forms new cell.
Describe what the centriole and spindle fibers are and what is their role in cellular reproduction.
The help divide chromosomes during cell reproduction.
What is the difference between chromosomes, chromatin, and chromatids?
Chromosomes contain genetic information (DNA). Chromatin forms chromosomes. Chromatids are the identical strands of DNA (half of a chromosome).
Describe what DNA is and what the letters stand for.
Genetic information; Deoxyribonucleic Acid
Cellular Respiration: Wheredoes it occur? What does it produce? Why is it important?
Mitochondria; Chemical energy from food is transformed into a usable form; Provides the energy for living organisms to perform all of the other necessary functions to maintain life.
What is a hypertonic solution? What happens to cells placed in this solution?
More concentration on the outside of the cell than inside; The cell shrinks.
What is a hypotonic solution? What happens to cells placed in this solution?
Less concentration on the outside of the cell than inside; The cell expands.
What is a isotonic solution? What happens to cells placed in this solution?
The concentration is equal on both sides of the cell wall; Nothing happens to the cell.