Biology question and answers for January 17, 2024
- Q Compared to the cytosol which of the following statement is generally true about the lumen of the endoplasmic reticulum in a eukaryotic cell It has a higher pH It has...
- Q All secretory vesicles forming from the trans Golgi network TGN leave the TGN in a steady stream and are fused with the plasma membrane as soon as they get there...
- Q The activated P13kinase phosphorylates which downstream factor Ras protein to activate GTP hydrolysis Nuclear membrane proteins Receptor tyrosine kinases Lipid molecules in the cell
- Q 6 During co translational import of proteins into the ER the cytoplasmic receptor that recognizes an ER signal sequence as it emerges from a ribosome is called
- Q What type of cells are produced during meiosis A asexual cells B diploid cells C division cells D haploid cells
- Q What type of beak would not be suited for eating these corn kernels Use your data to explain your answer
- Q 29 The development of competence in S pneumoniae Transformation is a wonderful example of a phenomenon known as quorum sensing Explain how these two unique bacterial abilities occur and how...
- Q Which of the events below does NOT happen during the G1 phase of the cell cycle A synthesizing of new proteins and organelles B cell division C cell grows
- Q bacterial cell walls do antibiotics target to kill the cell A salt in the cytoplasm B the mitochondria C peptidoglycan D cellulose in the cell wall
- Q Which of the following statements does not describe a function of the extracellular matrix O a It is a source of immobilised growth factors O b The composition of the...
- Q In skeletal muscle cells tropomyosin is associated with Oa Desmin filaments O b Myosin filaments Oc Thin filaments d Intermediate filaments Oe Thick filaments
- Q The DNA of a cell is not programmed 17 to coordinate the activities needed to keep a large cell alive How does cell division help the cell avoid DNA overload...
- Q Which of the following statements is correct O a White adipose tissue exclusively generates heat by thermogenesis O b Brown adipose tissue is structurally similar to white adipose tissue O...
- Q What junctional structure is critical in establishing a polarized epithelial tissue A desmosomes B adherens junctions C tight junctions D gap junctions DVL
- Q The term gating refers to what A The transition state in an antiporter B The release of one type of ion followed by the binding of another type in a...
- Q 8 In the fluid mosaic model of the plasma membrane what does mosaic refer to A the membrane has two different sides B the membrane is a lipid bilayer made...
- Q Which organelle is the primary site for ribosome assembly A Lysosome B Nucleus C Golgi apparatus D smooth ER E rough ER
- Q What type of molecules can pass freely through the plasma membrane a small proteins b simple sugars c ions d steroids e simple salts
- Q 23 What combination of molecules form complexes in the ECM to help resist compressive forces a Nucleic acids and proteins b Polysacharrides and proteins c Polysacharrides and carbohydrates
- Q 3 Which microtubules are lengthening during anaphase A aster B kinetechore C interpolar D contractile ring E ciliary
- Q Upregulation of p53 in the presence of DNA damage inhibits cell cycle progression by A adding inhibitory phosphates on cdks B degrading cyclins C activating gene for a cdk inhibitory...
- Q 6 What would an increase in extracellular calcium do to specific types of cell adhes a Increase adhesion mediated by cadherins b Decrease adhesion mediated by cadherins c Increase adhesion...
- Q At which phase are centrioles beginning to move apart in dividing animal cells A telophase B anaphase C prometaphase D metaphase E prophase
- Q 1 The protein complex that forms on each sister chromatid and acts as an attachment site for microtubules of the mitotic spindle is called A anaphase B kinetochore C aster...
- Q O Cells are differentiated because they have different they produce different functions that are turned or As a result Their different proteins cause them to have structures and
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