EOC Review 1-7

The direction of the flow of energy in a food web is represented by ___.

• Light bulbs
• Dotted Lines
• Arrows
• Bubbles

Tags

NGSS.MS-LS2-3

Which of these is an example of an autotroph?

• Sunflower
• Krill
• Leopard
• Hummingbird

Tags

NGSS.MS-LS1-6

What percentage of energy is passed on to each tropic level?

• 10%
• 50%
• 90%
• 100%

Tags

NGSS.MS-LS2-3

A community of living and nonliving things in their natural environment makes up a 

• food web
• ecosystem
• food chain

Tags

NGSS.MS-LS2-3

If oxygen level in the blood decreases, the brain sends a message to the lungs/diaphragm to breathe faster, which increases the levels of oxygen in the blood. This describes which type of feedback loop?

• Positive

• Negative

Tags

NGSS.HS-LS1-3

Which best describes homeostasis?

• Making more organisms

• Maintaining a stable state of conditions

• Using energy for life processes

• Passing of hereditary traits

Tags

NGSS.HS-LS1-3

NGSS.HS-LS1-7

When you run, you begin to breathe heavier and faster. Your heart beats more quickly, bringing more oxygen to your cells. Which two systems are working together?

• Cardiovascular and Respiratory

• Excretory and Immune

• Digestive and Cardiovascular

• Nervous and Respiratory

A student walks to school in the morning when the outside temperature is 60 degrees. When the same student walks home after school, the outside temperature has dropped to 35 degrees. In this situation, how is thermal homeostasis maintained?

• The student's heart rate drops as a negative feedback mechanism delivers less oxygen to the lungs

• The student begins to sweat as a positive feedback mechanism to reduce the core body temperature.

• The student begins to shiver as a negative feedback mechanism to increase the core body temperature

• The student's breathing rate slows as a positive feedback mechanism to deliver more oxygen to the lungs.

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

The region of DNA indicated in the diagram is called a _______________.

• Chromosome

• Gene

• Nucleotide

• Protein