Unit 2 - cell function

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​Actual cell membrane with tumore growing in it

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​Cell membrane- electron microscope

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​Diffusion

example​

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Multiple Choice

True or False:

Simple diffusion requires energy

• True

• False

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​Anyone know what this is?

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​What does this have to do with diffusion?

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-answer in the chat

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Multiple Choice

Osmosis is the diffusion of ___________ across a selectively permeable membrane

• water

• oxygen

• gas

• hydrogen

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​Diffusion- no energy needed (passive). All molecules want equal space around them . They move from a high concentration (car) to to a low concentration. Happens in liquids and gases

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​Osmosis and eggs...

Multiple Choice

When it is saltier ( higher solute concentration) on the outside of the cell. the cell is in a ________________ state.

• hypotonic

• hypertonic

• iotonic

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​Is this an example of active or passive transport? What is it called?

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​Cell from a leaf

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​Chloroplast

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Photosynthesis basics

​photosynthesis:

. Literally Means "light" "to make"

. happens in plants and protists (algae)

. in plants happens mainly on top of a plant's leaves... why?

. happens in the chloroplast organelle

. Uses CO2 , H2O, and sunlight to make Oxygen and Glucose​

. allows plants to be able to make their own food​

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Multiple Choice

Which reaction in photosynthesis does not require light?

• light reaction

• calvin cycle

• both reactions need light

Multiple Choice

Photosynthesis takes place in this organelle

• nucleus

• ribsome

• vacuole

• chlorplast

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Photosynthesis taking place in a plant

Multiple Choice

Oxygen is produced during which stage of photosynhthesis?

• light reaction

• calvin cycle

• oxygen reaction

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​mitochondria under an electron microscope

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Multiple Choice

Cells use sugar directly for energy

• True

• False

Multiple Choice

Which stage of cellular respiration produces the most oxygen?

• glycolysis

• kreb's cycle

• electron transport chain

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​Products that are supposed to increase ATP

Multiple Choice

Fermentation requires oxygen

• true

• false

Multiple Choice

Fermentation produces less oxygen than aerobic cell respiration

• True

• False

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​DNA under a microscope

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​Protein molecule under a microscope

Multiple Choice

DNA Contains _____ bases

• 2

• 3

• 4

• 0

Multiple Choice

Which type of RNA copies a DNA sequence during transcription

• tRNA

• mRNA

• tRNA

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​How is this related to protein synthesis ?

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Multiple Choice

Each ___ bases on mRNA is one codon

• 2

• 3

• 4

• 5