BIO 242 Final Exam Questions and Answers (Solved Papers) the following are basic cell functions of all cells except - Correct Answers ✅generating electrical impulses in order to relay information to other cells what is the proper progression of the levels of organization of the body? - Correct Answers ✅chemicals, cells, tissues, organs, body systems, whole body epithelial tissue has the following functions - Correct Answers ✅1. it lines the lumen (cavity) of organs that interact with material from the outside environment
- it provides a protective barrier
- it lines endocrine and exocrine glands
- makes you shiver when exposed to a sudden chill.
- makes you sweat when exercising in the hot sun.
--> NOT, it contracts to allow movement a homeostatic charge that is initiated outside of a target organ is considered - Correct Answers ✅extrinsic skeletal muscles act as - Correct Answers ✅effectors a homeostatic response - Correct Answers ✅1. increase production of red blood cells in response to donating blood
ANSWER: all of the above. 1 / 4
BIO 242 Final Exam Questions and Answers (Solved Papers) the following are all elements of the cell cytoplasm - Correct Answers ✅1. mitochondria
- centrioles.
- peroxisomes
4. NOT CHROMOSOMES
in the nova video shown in class, scientists discovered interference RNA (RNAi) when the addition of an extra purple pigment gene into a petunia produced - Correct Answers ✅white flowers (no purple pigment) what is the function of messenger RNA (mRNA)? - Correct Answers ✅a product of gene transcription that encodes a protein message.why does rough endoplasmic reticulum appear rough under the electron microscope? - Correct Answers ✅ribosomes are embedded within the membrane products synthesized in the rough and smooth endoplasmic reticulum are destined for use in - Correct Answers ✅1.proteins to be secreted to the exterior of the cell
- proteins incorporated in the plasma membrane
- lipid derived steroid hormone production 2 / 4
BIO 242 Final Exam Questions and Answers (Solved Papers) a product synthesized in the rough and smooth endoplasmic reticulum that is not destined for use is - Correct Answers ✅proteins needed for chemical reactions within the cytosol when a pore has a ubiquitin tag, what is the result - Correct Answers ✅it is digested into smaller peptides by enzymes within a proteasome the final sorting and packaging of protein products destined for secretion into the extracellular space is facilitated by what organelle - Correct Answers ✅the golgi complex sorting signals on protein products cause secretory proteins to aggregate at the golgi membrane. coatomer proteins bind to the surface of the membrane and it starts to bow outwards
- Correct Answers ✅(#1) secretory vessicle formation
v-snares on the outside of the secretory vesicle bind to t- snares on the plasma membrane. this step results in the fusing of vesicle and plasma membrane, which is called - Correct Answers ✅exocytosis (#4) docking at plasma membrane lysosomes and peroxisomes - Correct Answers ✅both degrade unwanted or dangerous materials: lysosomes have 3 / 4
BIO 242 Final Exam Questions and Answers (Solved Papers) hydrolytic enzymes that break down materials by the addition of a water molecule.the process of the cell "drinking" extracellular fluid is called - Correct Answers ✅pinocytosis the binding of target molecules to specific receptor proteins on the outer surface of the plasma membrane followed by endocytosis is defined as - Correct Answers ✅receptor- mediated endocytosis pseudopods connect to form a phagosome - Correct Answers ✅phagocytosis dynamin pinches neck of vessicle - Correct Answers ✅pinocytosis clathrin causes plasma membrane to bow inward and connects to form a vessicle - Correct Answers ✅receptor- mediated endocytosis the elements of the cytoskeleton include - Correct Answers ✅1. microtubules
- microfilaments
- intermediate filaments
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