Biology Midyear Review

Which molecules are joined together to make proteins?

• fatty acids

• nucleic acids

• amino acids

• acetic acids

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Leaves are part of a plant’s shoot system. The xylem tissue in leaves transports —

• the bacteria needed for nitrogen fixation in root nodules

• the wax required to coat the surface of actively growing tissue

•  the water and minerals that are absorbed by the roots

• the oxygen that regulates the rate of carbohydrate production

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Enzymes, hemoglobin and maltase are all considered to be which organic molecule?

• carbohydrates

• proteins

• nucleic acids

• lipids

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Hypertonic solutions

• make cells shrink

• make cells swell

Hypotonic solutions

• make cells shrink

• make cells swell

Osmosis is the ______

• when the smell of the neighbors trash moves through the neighborhood

• smell of cookies moving through the kitchen

• movement of water across a semi-permeable membrane

• movement of gases across a room

What is this image?

• a nucleus

• proteins

• cell membrane

• lipids

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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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What is the difference between DNA and RNA in terms of bases?

• RNA contains uracil in place of thymine

• RNA contains uracil in place of adenine

• RNA contains uracil in place of guanine

• RNA contains uracil in place of  cytosine

Where in the cell does cell respiration occur?

• chloroplast 

• central vacuole 

• mitochondria

• cell membrane

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