Biology 1544 - Chapter 4

Peroxisomes are organelles that are involved in the _____.

breakdown of fatty acids

The purpose of cellular respiration is the production of __________.

ATP

_____ aid in the coordination of the activities of adjacent animal cells.

Gap (communicating) junctions

What do the rough endoplasmic reticulum, Golgi apparatus, and lysosomes have in common?

They are constructed of interrelated membranes.

A certain cell has a dense nucleoid region, ribosomes, but no membrane-enclosed organelles. Based on this information, it could be __________.

an archaean

Mitochondria are found in _____.

both plant cells and animal cells

Which cellular organelle is required for photosynthesis to occur in eukaryotic cells?

chloroplast

The primary role of _____ is to bind animal cells together.

desmosomes

Which of the following are stored in the lysosomes of the cell?

digestive enzymes

Mitochondria and chloroplasts are similar in that they both __________; however, they are different in that only chloroplasts, and not mitochondria, __________.

have a double membrane ... carry out photosynthesis

The nucleolus __________.

is rich in ribosomal RNA

The maximum size of a cell is limited by _____.

its need for enough surface area to make exchanges with its environment

Bacterial cells are prokaryotic; unlike a typical eukaryotic cell, they _____.

lack a nucleus

Which of the following organelles is found only in animal cells and NOT in most plant cells?

lysosome

Which organelle plays a role in intracellular digestion?

lysosomes

The cilia and flagella of eukaryotic cells are composed of _____.

microtubules

The internal skeleton of a cell is composed of _____.

microtubules, intermediate filaments, and microfilaments

Which cell structure is responsible for metabolism?

mitochondrion

The genetic center of the eukaryotic cell is the __________.

nucleus

You have identified a new organism. It has ribosomes, plasmodesmata, and cell walls made of cellulose. This new organism is most likely a(n) __________.

plant

Chloroplasts are found in __________.

plant cells and some protists

Which of the following are found in prokaryotic cells?

ribosomes : Both prokaryotic and eukaryotic cells do have ribosomes.

Which of the following is a function of the rough endoplasmic reticulum?

synthesizing receptor proteins

Lysosomes are derived from __________ and function in __________.

the Golgi apparatus and rough endoplasmic reticulum ... digestion of worn-out organelles

Which of these cell junctions form a barrier to the passage of materials?

tight junctions

In eukaryotic cells the first step in protein synthesis is the _____.

transferring of information from DNA to messenger RNA

To enter or leave any cell, substances must pass through _____.

the plasma membrane

What is the relationship between the Golgi apparatus and the plasma membrane?

The finished products of the Golgi apparatus may leave the cell through vesicles that fuse with the plasma membrane.

What mitochondrial feature enhances cellular respiration?

cristae

The contractile vacuole __________

eliminates excess water from the cytoplasm of freshwater protists

The term resolving power refers to _____.

the clarity of the image in showing two objects as separate

Which of the following correctly matches an organelle with its function? The _____ functions in _____.

vacuole ... storage