Ch 6 Review

Tour of an Animal Cell: Structures and Functions Pt C

1. microtubules 2. intermediate filaments 3. microtubules 4. microfilaments 5.intermediate filaments 6. microfilaments

Which molecules do not normally cross the nuclear membrane?

DNA

Which of the following options best depicts the flow of information when a gene directs the synthesis of a cellular component?

DNA →→ RNA →→ protein

Which structure is part of the endomembrane system?

Golgi apparatus

Which statement about extracellular structures (plant cell walls and the extracellular matrix of animal cells) is correct?

Information can be transmitted from these extracellular structures to the cytoplasm.

Which of the following functions is NOT associated with the cytoskeleton in eukaryotic cells? See Concept 6.6 (Page)

Movement of RNA molecules from the nucleus to the cytoplasm Submit

Nucleoplasmin is a nuclear protein. This protein was divided into two segments and linked to the same large cytoplasmic protein, generating two fusion proteins. After injecting these fusion proteins into a cell, one of the proteins was found in the nucleus and the other in the cytoplasm. Which of the following conclusions can be drawn from these results?

Only one of the two fusion proteins possesses a nuclear localization signal.

Select the correct statement describing cellular structure or function.

Plant and animal cells both carry out cellular respiration, producing ATP. Submit

Which statement correctly describes an endomembrane function?

Products of the ER are usually modified during their transit from the cis to the trans region of the Golgi apparatus. Submit

Which of the following statements about the nuclear envelope is false?

The nuclear envelope is continuous with the Golgi apparatus. Submit

Which statement correctly describes the nuclear envelope of a eukaryotic cell?

The nuclear envelope is continuous with the endoplasmic reticulum.

Which statements are true for chloroplasts? Select the three that apply.

They have membranous sacs called thylakoids that are surrounded by a fluid called stroma. They are the sites of reactions that convert solar energy into chemical energy. They contain the green pigment chlorophyll.

In experiments to test whether a protein can enter the nucleus, why would proteins be labeled with fluorescent molecules?

To make the proteins easy to see

Tour of an Animal Cell: Structures and Functions Pt A

a synthesizes lipids b assembles ribosomes c defines cell shape d produces secretory proteins e modifies and sorts proteins f digests proteins g generates atp

Which of the following is a common trait of chloroplasts and mitochondria?

both contain their own DNA

True or false? Large proteins containing a nuclear localization signal (NLS) bind to the nuclear pore and enter the nucleus without any expenditure of energy.

false

One difference between eukaryotic and prokaryotic cells is that eukaryotic cells

have membrane-enclosed organelles, which are lacking in prokaryotic cells.

Membrane phospholipids

may have ʺkinksʺ in their tails, each caused by the presence of a double bond between carbons.

Which structure is common to plant and animal cells?

mitochondrion

A small protein (molecular weight = 25,000 daltons) is injected into a cell and observed in the nucleus a short time later. What type of transport has taken place?

passive transport

Drag the correct description under each cell structure to identify the role it plays in the plant cell.

plant cell wall: strong, protective structure made from cellulose fibers central vacuole: regulates cytoplasm composition, creates internal pressure, and stores cell compounds chloroplast: makes sugar by converting light energy into chemical energy mitochondria: produces chemical energy (ATP) that can power the cell golgi apparatus: modifies and packages proteins

Tour pf a Plant Cell: Structures and Functions A Plant cells and animal cells share many of the same structures, but each type of cell also has unique structures. In this activity, you will indicate which cell structures are found only in plant cells, only in animal cells, or in both plant and animal cells.

plant only: central vacuole, cellulose cell wall, chloroplast animal cell only: centriole both: golgi apparatus, endoplasmic reticulum, mitochondrion, nucleus, plasma membrane, cytoskeleton

Tour of an Animal Cell: Structures and Functions Pt B

prokaryotic only: nucleoid eukaryotic only: mitochondria, nucleus, lysosomes Both: ribosomes, flagella, plasma membrane

Which of the following is present in a prokaryotic cell?

ribosome

Which of the following clues would tell you if a cell is prokaryotic or eukaryotic?

whether or not the cell is generally partitioned by internal membranes