CELLS CHARACTERISTICS

TYPES
1. PROKARYOTIC CELLS •They have no nucleus. •They are only found in bacteria. •They are usually unicellular. •DNA is dispersed in the cytoplasm. •Asexual reproduction.
2. EUKARYOTIC CELLS •They have a nucleus. •They are found in all other living things. •They are usually multicellular. •The DNA is in the nucleus. •Reproduction: mitosis and meiosis.
  1. ANIMAL CELL •Doesn't have a cell wall. •It has some small vacuoles. Ex.= human cells.
  2. VEGETAL CELL •Has a cell wall. • It has chloroplasts. •It has a big vacuole. Ex.= the rose cells.
SHAPE
1. SINGLE-CELLED ORGANISMS It depends on how they adapt to the environment.
2. MULTICELLULAR ORGANISMS It is dictated by the function that the cell performs.
SIZE
1. •It's measured in micrometres (μm). •Diameter between 0.5μm and 25μm. •It's necessary to use a microscope to see most of them.
STRUCTURE AND FUNCTIONS
1. CELL MEMBRANE It surrounds, protects the cell and controls the substances that come in andd out of the cell. It is selectively permeable.
2. CYTOPLASM The cell is filled with this. This gel-like substance contains organelles that carry out vital functions and important genetic material.

Zusammenfassung der Ressource

	Erstellt von Paula Landa Mena vor fast 6 Jahre