Cells
All living beings are made up of _ and carry out _ .
All living beings are made up of CELLS and carry out THREE VITAL FUNCTIONS.
Tell me the difference between unicellular and multicellular organisms.
Can you give an example of each of them?
Unicellular organisms are made up of only one cell and multicellular organisms are made up of more than one cell.
Unicellular: bacteria, protozoa and yeast.
Multicellular: animals and plants.
Complete the paragraph:
Nutrition is the process by which living beings obtain _ from the air/water and _, in order to grow and obtain _. Living beings also eliminate _ in several ways.
Nutrition is the process by which living beings obtain OXYGEN from the air/water and NUTRIENTS, in order to grow and obtain ENERGY. Living beings also eliminate WASTE in several ways.
Tell me the characteristics of the Monera kingdom:
- Is it unicellular or multicellular?
- Type of cells.
- Type of nutrition.
- An example.
- It is unicellular.
- Prokaryotic cells.
- Autotrophic or heterotrophic nutrition.
- Bacteria.
True or False
Plants are essential to produce oxygen and food for other living beings. All life on Earth depends on plants.
True
All cells have three common parts. Name them.
- Cell membrane
- Cytoplasm
- Genetic material (DNA)
Some multicellular organisms have various groups of cells organized and coordinated into _, _ and _ .
Tissues, organs and systems.
Living beings can obtain their nutrients in two different ways. Which are they?
- Heterotrophic nutrition: animals obtain nutrients from other living beings or their remains (fungi).
They are multicellular with eukaryotic cells that form tissues, and they have heterotrophic nutrition.
What kingdom is it?
Animalia
They fix the plant to the ground. They absorb water and minerals from the soil.
What part of the plant is it?The roots.
Tell me two differences between prokaryotes and eukaryotes.
1. Prokaryotes don't have nucleus.
2. In prokaryotes, the genetic material is located in the cytoplasm.
True or false: Prokaryotes, like bacteria, are multicellular organisms.
False. All prokaryotes are unicellular organisms.
Interaction is the function through which living beings react to changes in their environment. What three structures do animals use for this function?
- Sense organs to detect changes.
- A nervous system to coordinate reactions.
- A locomotor system to move their bodies.
Organisms from the Plantae kingdom are _ (unicellular or multicellular) with _ cells with a rigid _ _ . They have _ nutrition. Some examples are _, _ and grasses.
Organisms from the Plantae kingdom are UNICELLULAR with EUKARYOTIC cells with a rigid CELL WALL . They have AUTOTROPHIC nutrition. Some examples are TREES, BUSHES and grasses.
What part of the plant is thin, green and flexible and may have branches?
The stem
The two structures found in plant cells that are absent in animal cells are...
- Cell wall
- Chloroplast
True or false. Plants react to changes in light or in water supply.
True.
What kingdom is it?
Fungi
The leaves are the organs that capture the _ and _ _.
The leaves are the organs that capture the SUNLIGHT and CARBON DIOXIDE.
What is the main function of chloroplasts?
Photosynthesis takes place in chloroplasts.
Reproduction allows living beings to produce offspring.
There two types of reproduction. Name and define them.- In the asexual reproduction, living beings produce offspring from parts of their bodies.
- In the sexual reproduction, two different types of individuals are needed: a male and a female.
Protists can be _ (protozoa, microscopic algae) and _ (large algae); they have _ cells. Protozoa have _ nutrition while algae have _ nutrition.
Protists can be UNICELLULAR (protozoa, microscopic algae) and MULTICELLULAR (large algae); they have EUKARYOTIC cells. Protozoa have HETEROTROPHIC nutrition while algae have AUTOTROPHIC nutrition.
They are tube-shaped cells that run through the inside of the root, stem, branches and the veins of leaves. Water and other substances flow through them.
What part of the plant is it?
The vessels.