The Cell and Cellular Metabolism and Reproduction Flashcards
have distinct parts, it constitutes our body with more than 100 trillion of it. Though very minute structures, these cells determines form and functions of the human body.
Cells
the size of a single cell
10 to 15 micrometers.
a blood cell measure
7.7 micrometers
ovum measures
100 micrometers.
a meter in length of its extensions.
nerve cell
different chemical processes during cell metabolism provides energy for muscle contraction and heat production.
Cell metabolism and energy use
Cells synthesize various types of molecules, including proteins, nucleic acids, and lipids. The different cells of the body do not all produce the same molecules. Therefore, the structural and functional characteristics of cells are determined by the types of molecules they produce.
Synthesis of molecules
Cells produce and receive chemical and electrical signals that allow them to communicate with one another. For example, nerve cells communicate with one another and with muscle cells, causing muscle cells to contract.
Communication
Each cell contains a copy of the genetic information of the individual. Specialized cells (sperm cells and oocytes) transmit that genetic information to the next generation.
Reproduction and inheritance
Most cells have three major portions, with the exception of the red blood cells.
Plasma membrane or cell membrane
Cytoplasm
Nucleus
defining boundaries with gate-like properties
plasma membrane, or cell membrane
contains organelles and molecules
cytoplasm
acts as the control center and contains a cell’s genetic information.
nucleus
Outermost component of cell
CELL MEMBRANE
material outside the cell
Extracellular
material inside cell
Intracellular
determines what can
pass in and out of the cell
Cell membrane
found in higher concentrations INSIDE the cell
Enzymes, glycogen. and potassium
found in higher concentrations OUTSIDE the cell
Sodium, calcium, and chloride
WAYS MOLECULES PASS THROUGH CELL MEMBRANE
- DIRECTLY THROUGH (DIFFUSION)
- MEMBRANE CHANNELS
- CARRIER MOLECULES
- VESICLES
Location: inside cell
cytoplasm
give cell shape and hold organelles in place
cytoplasm
center of cell
nucleus
Location: edge of nucleus
NUCLEAR ENVELOPE
Location: surface of nucleus
NUCLEAR PORES
where materials pass in and out of
nucleus
NUCLEAR PORES
Location: in nucleus
NUCLEOLUS
produce ribosomes
NUCLEOLUS
Location: attached to RER or cytoplasm
RIBOSOME
Function: produce proteins
RIBOSOME
Location: inside nucleus
CHROMOSOME
part of genetic makeup
CHROMOSOME
Location: inside nucleus
CHROMATIN
Location: cytoplasm
RER (ROUGH ENDOPLASMIC RETICULUM)