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WorksheetsStudent Final Assessment - Unit 2: Living Systems
Total questions: 13
Worksheet time: 7mins
What is the smallest unit of life in the biological hierarchy of a multicellular organism?
Cell
Organelle
Tissue
Organ
Which level of organization is made up of different types of tissues working together to perform a specific function?
Cell
Organelle
Organ System
Organ
The main purpose of homeostasis is to:
Increase the body's energy use.
Amplify a change in the body.
Maintain a stable internal environment.
Cause a disruption in the body's systems.
When you shiver in a cold room, your body is using a feedback mechanism to return your temperature to its normal range. What is the stimulus in this scenario?
Shivering
A drop in body temperature
The brain signaling muscles
Muscles generating heat
A feedback mechanism that works to reverse a change is known as:
Negative feedback
Positive feedback
Neutral feedback
Stimulus feedback
During childbirth, contractions get stronger and more frequent until the baby is born. This is an example of:
Negative feedback
Positive feedback
Homeostasis
A stimulus
Which of the following is the correct order of the biological hierarchy from simplest to most complex?
A. Organism → Organ Systems → Organs → Tissues → Cells → Organelles
B. Cells → Tissues → Organs → Organ Systems → Organism → Organelles
C. Organelles → Cells → Tissues → Organs → Organism → Organ Systems
D. Organelles → Cells → Tissues → Organs → Organ Systems → Organism
The heart, blood vessels, and blood work together to form the circulatory system. This is an example of what level of organization?
A. Organ
B. Tissue
C. Organ System
D. Organism
What is the body's response to a drop in blood sugar levels?
The liver releases stored glucose.
The body begins to shiver.
Sweat glands begin to produce sweat.
Heart rate increases.
Which statement best describes the relationship between an organ and an organ system?
An organ is a single unit that performs all functions of a system.
An organ system is the smallest functional unit of life.
An organ system is a group of similar organs that perform the same function.
An organ system is a group of different organs that work together for a common purpose.
Choose one organ system from the human body. Which two organs work together in the digestive system to break down food and absorb nutrients?
Stomach and small intestine
Heart and lungs
Kidneys and bladder
Brain and spinal cord
The biological hierarchy and a man-made system (e.g., a school, a city, a company) are similar in their hierarchical organization and function because:
Both have levels of organization where each level has a specific role and contributes to the overall function.
Both systems are random and lack any structure or organization.
Only biological systems have hierarchy, while man-made systems do not.
Man-made systems are always more complex than biological hierarchies.
Using the concept of a negative feedback loop, explain how the body regulates its temperature on a hot day. Be sure to use the terms stimulus, response, and homeostasis in your explanation.
On a hot day, the stimulus of increased body temperature triggers a response such as sweating, which helps cool the body and maintain homeostasis.
On a hot day, the body increases its temperature further to adapt to the environment, maintaining homeostasis.
On a hot day, the body stops sweating to conserve water, which helps maintain homeostasis.
On a hot day, the body ignores the stimulus and does not respond, disrupting homeostasis.
