Chapter 3 - Sources

c. Any of the above

A mutation in the gene for a cyclin protein might result in which of the following? a. Cancer b. A cell with less genetic material than normal c. Any of the above d. A cell with additional genetic material than normal

b. Pleuripotency, multipotency, oligopotency, unipotency

Arrange the following terms in order of increasing specialization: oligopotency, pleuripotency, unipotency, multipotency. a. Oligopotency, pleuripotency, unipotency, multipotency b. Pleuripotency, multipotency, oligopotency, unipotency c. Pleuripotency, oligopotency, multipotency unipotency d. Multipotency, pleuripotency, oligopotency, unipotency

b. Integral Proteins

Because they are embedded within the membrane, ion channels are examples of ________. a. Peripheral Proteins b. Integral Proteins c. Receptor Proteins d. Glycoproteins

d. Osmosis; Pinocytosis

Choose the answer that best completes the following analogy: Diffusion is to ________ as endocytosis is to ________. Solutes; Fluid a. Solutes; Fluid b. Gradient; Chemical Energy c. Filtration; Phagocytosis d. Osmosis; Pinocytosis

d. The water

Choose the term that best completes the following analogy: Cytoplasm is to cytosol as a swimming pool containing chlorine and flotation toys is to ________. a. The Chlorine b. The walls of the pool c. The Flotation toys d. The water

d. 3

How many "letters" of an RNA molecule, in sequence, does it take to provide the code for a single amino acid? a. 4 b. 1 c. 2 d. 3

b. Active Transport

Ion pumps are used for ________. a. Passive Transport b. Active Transport c. Facilitated Diffusion d. Endocytosis

a. DNA, nucleosome, chromatin, chromosome

Place the following structures in order from least to most complex organization: chromatin, nucleosome, DNA, chromosome a. DNA, nucleosome, chromatin, chromosome b. Nucleosome, DNA, chromosome, chromatin c. DNA, chromatin, nucleosome, chromosome d. Nucleosome, chromatin, DNA, chromosome

c. Down; Concentration

The diffusion of substances within a solution tends to move those substances ________ their ________ gradient. a. Down; Pressure b. Up; electrical c. Down; Concentration d. Up; electrochemical

c. A double cell membrane

The nucleus and mitochondria share which of the following features? a. The synthesis of ribosomes b. The production of cellular energy c. A double cell membrane d. Protein-lined membrane pores

d. Ribosomes

The rough ER has its name due to what associated structures? a. Proteins b. Lysosomes c. Golgi Apparatus d. Ribosomes

b. Nucleus; cytoplasm

Transcription and translation take place in the ________ and ________, respectively. a. Nucleolus; cytoplasm b. Nucleus; cytoplasm c. Cytoplasm; nucleus d. Nucleolus; nucleus

d. Stop certain cells from dividing

What is a primary function of tumor suppressor genes? a. Allow the cell to skip certain phases of the cell cycle b. Stop all cells from dividing c. Help oncogenes produce oncoproteins d. Stop certain cells from dividing

b. Cells from the umbilical cord and from baby teeth

What multipotent stem cells from children sometimes banked by parents? a. Embryonic stem cells b. Cells from the umbilical cord and from baby teeth c. Fetal stem cells d. Hematopoietic stem cells from red and white blood cells

c. They are all polymers of protein subunits

Which of the following is a feature common to all three components of the cytoskeleton? a. They all serve to scaffold the organelles within the cell b. They are all characterized by roughly the same diameter c. They are all polymers of protein subunits d. They all help the cell resist compression and tension

b. Production of proteins

Which of the following is a function of the rough ER? a. Regulation of intracellular calcium concentration b. Production of proteins c. Synthessis of steroid hormones d. Detoxification of certain substances

d. DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars

Which of the following is not a difference between DNA and RNA? a. DNA contains deoxyribose and RNA contains ribose b. RNA is single stranded and DNA is double stranded c. DNA contains thymine whereas RNA contains uracil d. DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars

a. The Ribosome

Which of the following is not made out of RNA? a. The Ribosome b. The messenger molecule that provides the code for protein synthesis c. The intron d. The carriers that shuffle amino acids to a growing polypeptide strand

d. Attaching complementary nucleotides to the template strand

Which of the following is part of the elongation step of DNA synthesis? a. None of these b. Pulling apart the two DNA strands c. Untwisting the DNA helix d. Attaching complementary nucleotides to the template strand

a. Mtiochondria

Which of the following organelles produces large quantities of ATP when both glucose and oxygen are available to the cell? a. Mtiochondria b. Peroxisomes c. ER d. Lysosomes

b. G1

Which of the following phases is characterized by preparation for DNA synthesis? a. G0 b. G1 c. S d. G2

a. CGAATATA

Which of the following sequences on a DNA molecule would be complementary to GCTTATAT? a. CGAATATA b. ATCCGCGC c. TGCCTCTC d. TAGGCGCG

b. Ribosomes

Which of the following structures could be found within the nucleolus? a. Histones b. Ribosomes c. Nucleosomes d. Chromatin

c. Hematopoietic

Which type of stem cell gives rise to red and white blood cells? a. Mesenchymal b. Endothelial c. Hematopoietic d. Epithelial