Cell Transport
Characteristics of Living Things
Life Functions
Cells and Organelles
Mixed
100
Movement of molecules from high to low concentration without energy is called ______.
Diffusion (passive transport)
100
This is the smallest unit of life.
What is a cell?
100
Which life process removes metabolic wastes from an organism?
Excretion
100
The Cell Theory contains these 3 parts.
What are all living things are made of one or more cells, the cell is the smallest unit of life, and all new cells come from preexisting cells?
100
Which level of organization comes directly after cells?
Tissues
200
Osmosis is the diffusion of ______ across a membrane
Water
200
These six characteristics make up all living things.
What are organization, growth and development, reproduction, response to stimuli, homeostasis, and use of energy?
200
A hydra ingests food, digests it, and eliminates wastes. This sequence describes what life process?
Nutrition
200
Which part of the cell regulates what enters and leaves, maintaining homeostasis?
Cell membrane
200
Which organelle is responsible for energy production through respiration?
Mitochondria
300
Active transport requires what molecule for energy?
ATP
300
The sum of all chemical reactions in an organism is called ______.
Metabolism
300
Which life function is directly powered by ATP?
Respiration
300
This organelle is known as the "brain" of the cell. It holds all of the DNA.
Nucleus
300
The diagram shows molecules moving from outside the cell to inside cell until they are equal. Which process is being illustrated when a protein is being moved from the inside to outside ?
Active Transport
400
What is facilitated diffusion?
Transport of large molecules High → Low with use of transport protein.
400
Organisms that can produce their own food through photosynthesis are called ______.
Autotrophs
400
Homeostasis in a single-celled organism is maintained by the interaction of which life function?
Regulation
400
Which organelle synthesizes proteins?
Ribosomes
400
What structure protects plant cells and helps them keep their shape (keeps them rigid)?
Cell wall
500
State two ways active transport differs from diffusion.
(1) Active transport requires energy (ATP), diffusion does not.
(2) Active transport moves molecules from low → high concentration; diffusion moves from high → low.
500
Euglena can both photosynthesize and ingest food. What does this show about its characteristics of life?
It can carry out both autotrophic and heterotrophic nutrition.
500
What are the Life Functions? (Hint: Mr. Stranger)
Metabolism
Respiration
Synthesis
Transport
Regulation
Ambulation (movement)
Nutrition
Growth and Development
Excretion
Reproduction
500
This type of cell has its genetic material surrounded by a membrane, are in plants, animals, and protists, and larger than its counterpart.
Eukaryotic cells
500
A biology class sets up an experiment to test the effect of different amounts of sunlight on the growth of bean plants. Each plant is given the same amount of water and fertilizer. One group of plants receives 4 hours of sunlight per day, another receives 8 hours, and another receives 12 hours. The students measure plant height after 3 weeks.
What is a possible hypothesis for this experiment?
What is the independent variable?
Hypothesis: If the amount of sunlight increases, then bean plants will grow taller.
Independent Variable (IV): Amount of sunlight the plants receive.