Podcast
Questions and Answers
What is the correct order of organization in multicellular organisms?
What is the correct order of organization in multicellular organisms?
- Tissues → Organs → Organ Systems → Body → Cells
- Body → Organ Systems → Organs → Tissues → Cells
- Cells → Tissues → Organs → Organ Systems → Body (correct)
- Organs → Tissues → Cells → Body
What is the main component of animal connective tissues?
What is the main component of animal connective tissues?
- Extracellular matrix (correct)
- Collagen fibrils
- Osteocytes
- Cells
What is the main function of collagen in animal connective tissues?
What is the main function of collagen in animal connective tissues?
- Providing tensile strength (correct)
- Providing cushioning
- Providing flexibility
- Providing structural support
What type of modification occurs to collagen during its synthesis?
What type of modification occurs to collagen during its synthesis?
What is the precursor to collagen?
What is the precursor to collagen?
Why doesn't procollagen proteinase cleave procollagen inside the fibroblast?
Why doesn't procollagen proteinase cleave procollagen inside the fibroblast?
What happens to epithelial cells when apical bundles of actin filaments contract?
What happens to epithelial cells when apical bundles of actin filaments contract?
What is the fate of a vesicle in a developing animal?
What is the fate of a vesicle in a developing animal?
What type of proteins binds to the dense plaque of intracellular linker proteins on the cytoplasmic side of the plasma membrane?
What type of proteins binds to the dense plaque of intracellular linker proteins on the cytoplasmic side of the plasma membrane?
What is the function of hemidesmosomes in an epithelial cell?
What is the function of hemidesmosomes in an epithelial cell?
Why are integrins used in hemidesmosomes instead of cadherins?
Why are integrins used in hemidesmosomes instead of cadherins?
What is the earliest tube that forms in a developing embryo?
What is the earliest tube that forms in a developing embryo?
How do integrins inform the cell that it is anchored to the extracellular matrix?
How do integrins inform the cell that it is anchored to the extracellular matrix?
What triggers the switch to an active conformation in integrins?
What triggers the switch to an active conformation in integrins?
What do polysaccharides and proteins in tissues do, according to the text?
What do polysaccharides and proteins in tissues do, according to the text?
What is the role of glycosaminoglycans (GAGs) in tissues?
What is the role of glycosaminoglycans (GAGs) in tissues?
What characterizes Hyaluronan as a glycosaminoglycan?
What characterizes Hyaluronan as a glycosaminoglycan?
Why are the negative charges on glycosaminoglycans (GAGs) important to their function?
Why are the negative charges on glycosaminoglycans (GAGs) important to their function?
What is a characteristic of oncogenes?
What is a characteristic of oncogenes?
What happens to the function of tumor suppressor genes in cancer cells?
What happens to the function of tumor suppressor genes in cancer cells?
What is a common feature of the key regulatory pathways perturbed in human cancers?
What is a common feature of the key regulatory pathways perturbed in human cancers?
What type of mutations can convert a proto-oncogene into an oncogene?
What type of mutations can convert a proto-oncogene into an oncogene?
What is a characteristic of tumor suppressor genes?
What is a characteristic of tumor suppressor genes?
What is the result of a loss-of-function mutation in a tumor suppressor gene?
What is the result of a loss-of-function mutation in a tumor suppressor gene?
What do gap junctions provide neighboring cells with?
What do gap junctions provide neighboring cells with?
Which protein assemblies penetrate the apposed membranes of adjacent cells in gap junctions?
Which protein assemblies penetrate the apposed membranes of adjacent cells in gap junctions?
What do stem cells have the ability to do in terms of lineage production?
What do stem cells have the ability to do in terms of lineage production?
Where does renewal occur continuously in the mammalian intestine?
Where does renewal occur continuously in the mammalian intestine?
What type of cells are primarily renewed from stem cells in the epidermis?
What type of cells are primarily renewed from stem cells in the epidermis?
Which type of stem cells are found in red bone marrow and give rise to various blood cell types?
Which type of stem cells are found in red bone marrow and give rise to various blood cell types?
What maintains the proliferation of stem cells in the precursor cells of the intestinal crypts?
What maintains the proliferation of stem cells in the precursor cells of the intestinal crypts?
What protein interacts with the GPCR frizzled in the Wnt signaling pathway?
What protein interacts with the GPCR frizzled in the Wnt signaling pathway?
Which cell types increase in production during an infection due to hemopoietic stem cells?
Which cell types increase in production during an infection due to hemopoietic stem cells?
What allows stem cells of different types to be maintained in culture?
What allows stem cells of different types to be maintained in culture?
