What are the respective functions of PSI & PSII PSI production of O 02 reduction of O NADP+ reduction of O NADPH PSII O O O
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- It is not an easy matter to assign particular func-tions to specific components of the basal lamina, sincethe overall structure is a complicated composite materialwith both mechanical and signaling properties. Nidogen,for example, cross-links two central components of thebasal lamina by binding to the laminin γ-1 chain and totype IV collagen. Given such a key role, it was surprisingthat mice with a homozygous knockout of the gene fornidogen-1 were entirely healthy, with no abnormal phe-notype. Similarly, mice homozygous for a knockout of thegene for nidogen-2 also appeared completely normal. Bycontrast, mice that were homozygous for a defined muta-tion in the gene for laminin γ-1, which eliminated just thebinding site for nidogen, died at birth with severe defectsin lung and kidney formation. The mutant portion of thelaminin γ-1 chain is thought to have no other functionthan to bind nidogen, and does not affect laminin struc-ture or its ability to assemble into the basal lamina.…Incats,theallele(B)producesblackcolorbut(b)producesayellowcoat. Theseallelesareincompletelydominanttoeachother.Aheterozygote producesatortoiseshellcolor.Thealleles(B)and(b)aresex-linkedaswell. Crossatortoiseshellfemalewithayellowmale.What's the primary difference betweenadult stem cells and embryonic stem cells?O A. Adult stem cells can become a limitednumber of cell types, and embryonic stemcells are more flexible and can generate manydifferent cell types.O B. Embryonic stem cells can become alimited number of cell types, and adult stemcells are more flexible and can generate manydifferent cell types.O C. Adult stem cells can generate manydifferent cell types, and embryonic stem cellscan't differentiate.O D. Embryonic stem cells can generatemany different cell types, and adult stem cellscan't differentiate
- • How do intracellular adaptor proteinscoordinate the activation of integrinproteins and their interactions withcytoskeletal components and theirresponse to changes in mechanicalforce acting on cell–matrix junctions?Expression of a homeotic gene in the wrong tissue inDrosophila results in the development of an inappropriatebody part from that tissue. Explain why this happens andhow it shows that homeotic genes are positive regulators ofdevelopmental pathways.Pls help ASAP. Pls do both.
- Step1:Clickwhereitsays“StartaNewGame.”Inordertomakenewbodycells,thecellcycle mustoccur.Duringthecellcycle,onecelldividestoformtwodaughtercellswithexactlythe same___________.Thecellcycleincludesthefollowing:________________________________, _________________________,and_________________________.Interphasehappens__________ ______________.DuringInterphase,thecelldoesnormalactivities,likemakingproteins,for example.Name the molecules that cycle thriught living systems expain pleaseInthetext,theauthordescribesthebenefitsofreceivingvaccines.Arethere disadvantages?Whydoyouthinksomepeoplemightchoosenottogetvaccinated?
- I. The retinoic acid receptor (RAR) is a transcription factor that is similar to steroid hormone receptors. Thesubstance (ligand) that binds to this receptor is retinoicacid. One of the genes whose transcription is activatedby retinoic acid binding to the receptor is myoD. Thediagram that follows shows a schematic view of theRAR proteins produced by genes into which one oftwo different 12-base double-stranded oligonucleotides had been inserted in the ORF. The insertion site(a–m) associated with each mutant protein is indicatedwith the appropriate letter on the polypeptide map.For constructs encoding proteins a–e, oligonucleotide 1(5′ TTAATTAATTAA 3′ read off either strand) wasinserted into the RAR gene. For constructs encoding proteins f–m, oligonucleotide 2 (5′ CCGGCCGGCCGG 3′)was inserted into the gene.NH2 f g h i j k l m COOHa b c d eThe wild-type RAR protein can both bind DNA and activate transcription weakly in the absence of retinoic acid(RA) and strongly in RA’s presence. Each…Cohesin proteins function as ______, and are most likely degraded during the early steps of ________. Select one: a. motor proteins, S phase b. structural proteins, S phase c. enzymes, S phase d. enzymes, anaphase e. structural proteins, anaphaseThousands of caspase substrateshave been identified. Which onesare the critical proteins that mustbe cleaved to trigger the majorcell remodeling events underlyingapoptosis?