Biology Regents Review: Structure & Function

1. What are the levels of biological organization, starting from the smallest living unit?

• multicellular organism

• organ

• system

• cell

• tissue

Tags

NGSS.HS-LS1-2

1. What process do organs work together to maintain, such as the lungs and heart balancing O₂ and CO₂?

Tags

NGSS.HS-LS1-3

1. What is the smallest unit of life?

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

1. What type of feedback is represented by the following example:

2. blood sugar increases → pancreas releases insulin → blood sugar decreases

• negative

• positive

Tags

NGSS.HS-LS1-3

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

Tags

NGSS.HS-LS1-3

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

Tags

NGSS.HS-LS1-3

What type of feedback loop is shown?

• negative
• neutral 
• positive

Tags

NGSS.HS-LS1-3

Humans have ___ for body temperature, blood glucose concentrations, electrolyte concentrations, pH levels, tendon tension and variables.

• positive feedback mechanisms
• set points
• a wide internal range
• no regulation

Tags

NGSS.HS-LS1-3

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed. This is an example of what type of feedback?

• Positive Feedback Response

• Negative Feedback Loop

Tags

NGSS.HS-LS1-3

Chains of amino acids fold into ______________.

• traits

• DNA

• proteins

• nucleotides

Tags

NGSS.HS-LS1-1