CBIO 606: Organelle Quiz

Which statement about the nucleus (stained in red) is FALSE?

• During open mitosis, the nuclear envelope loses its identity

• The nuclear envelope is contiguous with the ER

• The nuclear envelope contains an asymmetrical lipid composition

• The nucleus houses phase-separated compartments

• The nuclear envelope is a relatively flexible membrane

For the organelle depicted, what are some of its functions and abilities? Select all that apply.

• Sort and packages proteins and lipids into vesicles

• Modifies proteins

• Synthesizes lipids

• Modifies lipids

• Breaks down lipids

Which of the following statements about lysosomes (stained in green) is FALSE?

• Lysosomes are able to withstand reactive oxygen species

• Lysosomes form de novo via the fusion of specialized Golgi-derived vesicles and endosomes

• Lysosomes are essential for autophagy

• Lysosomes break down lipids

• Lysosomes can undergo fission

Which of the following statement(s) about peroxisomes is (are) true? Select all that apply.

• Peroxisomes break down reactive oxygen species

• Peroxisomes form de novo via specialized ER-derived vesicles only

• Peroxisomes can undergo fission

• Peroxisomes are long-lived organelles

• Peroxisomes break down lipids

Which of the following statement(s) about the endoplasmic reticulum is (are) true? Select all that apply.

• The ER sequesters proteins bound for the biosyntheic pathway

• The ER is one of the major sites for lipid synthesis

• The ER can target proteins for degradation

• The ER is able to degrade lipids

• The most specialized domain of the ER is the nuclear envelope

For the organelle depicted, what are some of its functions and abilities? Select all that apply.

• Houses ATP-generating machinery

• Breaks down lipids

• Can induce apoptosis

• Synthesize lipids

• Synthesize proteins

Which of the following statements about lipid droplets is FALSE?

• Lipid droplets are highly dynamic compartments

• Lipid droplets store triglycerides (TGs) that will be used during β-oxidation

• De novo lipid droplet formation occurs at an ER contact site

• Lipid droplets store sterols like cholesterol

• Lipid droplets are surrounded by a phospholipid bilayer

Though organelle-organelle contacts have been established, can multiple compartments contact, communicate, and coordinate complex biochemical processes with each other?

• Yes

• No

• Maybe

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NGSS.HS-LS1-2