Chapter 3: Cells
Which of the following is a functional characteristic of ribosomes? DNA replication Protein synthesis Housing of DNA Manufacture of mRNA
Protein synthesis
If a strand of DNA has a base sequence of AGGC, the complementary pair for that strand will be: CCTG TUUG TCCG TTCG
TCCG
Main cell structures include all of the following except: plasma membrane blood plasma organelles cytoplasm
blood plasma
The basic unit of structure and function in the human body is a(n): DNA molecule cell atom gene
cell
The presence of this substance in the cell membrane prevents it from breaking easily. Phospholipids Protein Glycoprotein molecules Cholesterol
cholesterol
All of the following are examples of passive transport except: filtration dialysis endocytosis osmosis
endocytosis
Active transport processes that utilize carrier molecules, or pumps, do not use cellular energy but rely on concentration gradients. True False
false
The sodium-potassium pump is an example of a passive transport process. False True
false
A solution that contains a higher concentration of salt than a living red blood cell would be: isotonic hypotonic hypertonic homeostatic
hypertonic
During this stage of mitosis, the spindle fibers attach to each chromatid propohase telophase anaphase metaphase
metaphase
The major energy production site of the cell is the: endoplasmic reticulum Golgi apparatus mitochondrion ribosome
mitochondrion
The correct sequence for the phases of mitosis following interphase is: anaphase, telophase, metaphase, prophase prophase, anaphase, metaphase, telophase prophase, metaphase, anaphase, telophase anaphase, metaphase, prophase, telophase
prophase, metaphase, anaphase, telophase
A DNA molecule is characterized by all of the following except: phosphate ribose sugar complementary base pairing double-helix shape
ribose sugar
The genetic code for a particular protein is passed from DNA to mRNA by a process known as: interphase transcription translation genome
transcription
For osmosis to occur, a selectively permeable membrane must be present. False True
true
Lysosomes sometimes kill cells instead of protecting them. True False
true
Rough endoplasmic reticulum appears rough because there are ribosomes attached to it. True False
true
