LEAP VOCABULARY REVIEW

What is the correct flow of organization in biological systems?

• tissue► cell► organism ►organ
•  cell ►fiber ►tissue ►organ system
• fiber► tissue► organ system► population
• cell ►tissue► organ► organ system

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 

• Positive Feedback Response
• Negative Feedback Loop 

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Why is the maintenance of homeostasis important to multicellular organisms?

• They must keep their internal environment within a narrow range of conditions.

• They require the ability to adjust their internal environment to match their external environment

• Their cells need to be able to respond rapidly to drastic changes in their external enviornment

• Their internal environment must provide their cells with a wide range of conditions

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Bacteria are

• unicellular and prokaryotic
• unicellular and eukaryotic
• multicellular and prokaryotic

Viruses are not

• organisms
• cells
• all of the above

Which organelle is only found in a plant cell? 

• nucleus
• chloroplast
• mitochondria
• cell membrane

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This organelle helps plants keep their structure and their shape. 

• Cell wall
• Cell membrane
• Chloroplast
• Nucleus

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

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

• amino acids
• nucleotides
• fatty acids
• polysaccharides

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

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