Mastering Biology Chapter 6

24 July 2022
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question
Which of the following will have the greatest ratio of surface area to volume?
answer
A box that is 1×1×1
question
Which statement correctly describes the nuclear envelope of a eukaryotic cell?
answer
The nuclear envelope is continuous with the endoplasmic reticulum.
question
Which organelle plays a role in intracellular digestion?
answer
lysosome the prefix "lyso-" means decomposition
question
If plant cells are grown on media containing radioactively labeled thymine for one generation, radioactively labeled macromolecules will be detected in which of the following?
answer
in the nucleus, mitochondria, and chloroplasts
question
Can you match these prefixes, suffixes, and word roots with their definitions? chrom- trans- -some (or soma-) aqu- (or aqua-) -elle bi- inter-
answer
color: chrom- across: trans- body: -some (or soma-) water: aqu- (or aqua-) little, small: -elle two: bi- between: inter-
question
Can you match these prefixes, suffixes, and word roots with their definitions? mito- eu- -cyte (or cyto-) a- (or an-) chloro- endo- ex-
answer
thread: mito- true, good: eu- cell: -cyte (or cyto-) without, lack of, not: a- (or an-) green: chloro- inside, inner: endo- out of: ex-
question
Can you match these prefixes, suffixes, and word roots with their definitions? hypo- -phyll sym- phago- -plasm hyper- micro-
answer
below, less than: hypo- leaf: -phyll same: sym- eat: phago- formed substance: -plasm above, greater than: hyper- small: micro-
question
Choose the letter that indicates the organelle that contains most of a cell's DNA.
Choose the letter that indicates the organelle that contains most of a cell's DNA.
answer
C, the nucleus contains most of a cell's DNA
question
Which of these organelles carries out cellular respiration?
answer
mitochondrion
question
Which of these is the double membrane that encloses the nucleus?
Which of these is the double membrane that encloses the nucleus?
answer
E, the nuclear envelope
question
The _____ is composed of DNA and protein.
answer
Chromatin
question
Ribosomal subunits are manufactured by the _____.
answer
nucleolus
question
_____ are the sites of protein synthesis.
answer
Ribosomes
question
Which of these manufactures cellular membranes by adding membrane proteins and phospholipids to its own membrane?
answer
rough endoplasmic reticulum
question
The _____ is a selective barrier, regulating the passage of material into and out of the cell.
answer
plasma membrane
question
Where is calcium stored?
answer
smooth endoplasmic reticulum
question
Which of these structures stores, modifies, and packages products?
Which of these structures stores, modifies, and packages products?
answer
A, the golgi apparatus
question
Which of these are hollow rods that shape and support the cell?
answer
microtubules
question
_____ is/are identical in structure to centrioles.
answer
basal bodies
question
Which of these organelles produces H2O2 as a by-product?
answer
peroxisome
question
Which of these provides the cell with structural support?
Which of these provides the cell with structural support?
answer
Microfilaments
question
Drag the labels on the left onto the diagram of the animal cell to correctly identify the function performed by each cellular structure.
answer
a. synthesis lipids b. assembles ribosomes c. defines cell shape d. produces secretory proteins e. modifies and sorts proteins f. digests proteins g. generated ATP
question
Comparing eukaryotic and prokaryotic cells. Drag each cell structure to the appropriate bin.
answer
Prokaryotic Only: nucleioid Eukaryotic Only: nucleolus, lysosome, mitochondria Both: plasma membrane, ribosomes, flagella
question
In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are ___.
answer
microtubules
question
Many cell organelles, most notably the nucleus, are anchored by ________ which are assembled from a diverse class of proteins.
answer
intermediate filaments
question
Centrosomes are sites where protein dimers assemble into ___.
answer
microtubules
question
The extension of psuedopodia in amoeba is due to the regulated assembly and destruction of ___.
answer
microfilaments
question
The only cytoskeletal fibers not associated with intracellular movement or whole cell locomotion are the ___.
answer
intermediate filaments
question
During muscle contractions, myosin motor proteins move across tracks of ___.
answer
microfilaments