Biology Year Review Part 1

An example of a positive feedback loop is ____________.

• Childbirth

• Blood Pressure regulation

• Body Temperature regulation

• All of the above

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Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
• is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation

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What are the levels of organization starting from simple to complex?

• cells- tissues- organs- organ systems- organisms- populations- communities- ecosystem

• ecosystem- communitites- populations- organisms- organ systems- organs- tissues- cells

• cells- organs- tissues- organ systems- populations- ecosystem

• tissue- cells- organs- organ systems- organisms- populations- communities- ecosystem

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What is an example of a negative feedback mechanism?

• 
• 

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smallest unit able to perform basic functions of life

• organ
• tissue
• organism
• cell

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Which one of these is NOT one of the characteristics of living things?

• All living things are made of cells
• All living things reproduce
• All living things eat
• All living things evolve

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Which is an example of an organism using homeostasis?

• A dog panting to lower body temperature
• Walking sticks blending in
• Growing from a tadpole into a frog
• Shivering to lower body temperature

Which of the following is NOT a characteristic of living things?

• Reproduction
• Require Light to Live
• Growth and Development
• Obtain and Use Resources

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Which one of the following is a characteristic of life?

• Growth
• Breathing
• Expelling toxins
• Photosynthesis

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In order to be considered living an organism must have

• blood
• cells
• brains
• hair

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