BIOGEOSPHERE
Bilingual Biology and Geology
I.E.S. "J.S.Elcano (Sanlúcar Bda.)
5. Cellular interaction
Interaction allows cells perceive the changes in their surrounding (stimuli) and act in consequence (responses).
- Stimulus is any change, chemical or physical, in the medium able to provoke
a response, such as changes in light or temperature.
- Response is the cell reaction when a stimulus is perceived.
The main ones are movements, secretion of substances and cellular division.
READING ACTIVITIES
After reading the text, copy and answer the following questions into your notebook:
Remember: you must make complete sentences.
5.1. Euglena is a type of unicellular algae
which lives in fresh water.
It has a flagellum and a specialised
organelle that allows it to detect the light,
called eyespot.
And have a flagellum?
Why?
c. This is an example of interaction function.
Can you identify the stimulus?
And the response?
Now,
check
your
answers!
(Diccionario Ing-Esp)
(Juegos de vocabulario)
(Visual dictionary)
(Visual dictionary)
(Glosario de C. Naturales)
(Science audio-glossary)
(Science audio-glossary)
(Pronunciación)
(Enciclopedia de C. Naturales)
(Tabla periódica)
Eva Mª
López Rodríguez
Departamento
Biología y Geología
IES " J. S. Elcano"
Sanlúcar de Barrameda