Biological Organizations
What is the smallest unit of life?
Cell
The process by which an organism increases in size and develops over time.
Growth
A puppy grows from 5 pounds to 40 pounds during its first year. Which GCHARMS process is demonstrated?
Growth
Which tissue type contracts to create movement?
Muscle Tissue
What do we call animals that generate internal heat through metabolism to maintain their body temperature?
Endotherms
What do we call groups of similar cells working together to perform a specific function?
Tissues
The characteristic of life that means all living things consist of one or more cells.
Cellular Organization
A sunflower turns toward sunlight throughout the day.
Sensitivity
Which tissue type covers surfaces, lines organs, and provides protection? The conjunctiva is an example.
Epithelial Tissue
Lizards and snakes depend largely on environmental heat sources to regulate body temperature. What are these animals called?
Ectotherms
DAILY DOUBLE!!!!!
Arrange these structures from simplest to most complex: organ, tissue, cell, organ system, organism.
Cell → Tissue → Organ → Organ System → Organism
The chemical processes through which organisms obtain and use energy to sustain life.
Metabolism
When your body temperature rises, you begin sweating to cool down.
Homeostasis
The retina receives light and converts it into electrical signals. Which tissue type allows information to travel to the brain?
Nervous Tissue
Explain why photosynthesis, live birth, and speech are NOT considered universal criteria for life.
Not all living organisms perform these processes. Animals don’t photosynthesize, many organisms reproduce without live birth, and most organisms cannot speak
A plain chocolate bar has a uniform composition, while a chocolate bar containing visible nuts has different parts. Which is homogeneous and which is heterogeneous? Explain why.
Plain chocolate is homogeneous because its composition is uniform. Chocolate with nuts is heterogeneous because its components are not evenly distributed.
The process by which an organism produces offspring of its own kind.
Reproduction
A bird lays eggs that eventually hatch into chicks.
Reproduction
The sclera is the tough white outer layer of the eye. Identify its tissue type and explain its function.
Connective Tissue — provides structural support, maintains the eye’s shape, and protects the eye.
A lizard sits on a warm rock in the morning and moves into the shade when temperatures rise. Explain how this demonstrates homeostasis
The lizard regulates its body temperature using external heat and shade, helping maintain internal conditions within a suitable range.
Name all EIGHT levels of biological organization from simplest to most complex.
Atom → Molecule → Organelle → Cell → Tissue → Organ → Organ System → Organism
The ability of an organism to detect and respond to changes in its environment.
Sensitivity
ver many generations, polar bears developed thick fur that helps them survive in freezing temperatures.
Adaptation
Identify all FOUR major tissue types, explain their functions, and name one example of each from the eye.
Nervous: transmits information (retina). Muscle: contracts to create movement (iris). Epithelial: covers and protects surfaces (conjunctiva). Connective: provides support and structure (sclera).
FINAL JEOPARDY
Why do endotherms generally need to eat more frequently than ectotherms? Explain using the words metabolism, energy, and body temperature.
Endotherms use metabolism to generate heat and maintain a stable body temperature. This requires substantial energy, so they generally need to eat more frequently. Ectotherms rely more on environmental heat and generally require less energy.