Biology (Cells) Flashcards
what you need to know for ks3 biology (Cells)
What are cells?
the smallest unit of life and the building blocks for all organisms
Each component of a cell has . . .
a function
Animal and plant cells are the same. True or False?
False. They have some similarities and some differences
What cell components can be found in both animal and plant cells?
Nucleus, Cell membrane, Cytoplasm and mitochondria.
Bacteria is a . . .
Single celled organism
The function of the nucleus
contains the genetic material (DNA) of the organism and controls the cell’s activities.
The function of the cytoplasm
the liquid that makes up most of the cell in which chemical reactions happen. This is mainly water.
The function of the cell membrane
a flexible outer layer that surrounds the cell and controls which substances can pass into and out from it.
The function of the mitochondria
tiny parts of cells floating in the cytoplasm where energy is released from glucose from food. The mitochondria, found in the cell cytoplasm, are where most respiration
happens.
What components can be found in plant cells and not animal cells?
Cell wall, vacuole and chloroplasts
The function of the cell wall
a tough outer layer of the cell, which contains cellulose to provide strength and support to the plant.
The function of the vacuole
a space inside the cytoplasm that contains a watery liquid called cell sap. It keeps the cell firm.
The function of the chloroplasts
structures found in the cells of green parts of plants only (leaves and stems) which contain a green pigment called chlorophyll in which photosynthesis occurs.
What do animal and plant cells feel like?
Animal cells feel squishy or malleable. Plant cells feel firm or rigid.
What part of plant cells gives them their crunch?
The cell wall gives plants their crunch.
