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