31- of all college students major in STEM (Science- Technology- Engine.pdf
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31% of all college students major in STEM (Science, Technology, Engineering, and Math). If 43 college students are randomly selected, find the probability that a. Exactly 14 of them major in STEM.? b. At most 13 of them major in STEM. ? c. At least 13 of them major in STEM. ? d. Between 11 and 16 (including 11 and 16) of them major in STEM.?.
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cause for mass extinction events on our planet? a) Yes-rapid climatic cooling b) Yes - drops in
oxygen levels in the ocean c) Yes asteroid impacts d) All of these have been proposed as
universal causes of extinctions at some point, but their significance and roles, if any, vary from
event to event.
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set. Based on the histogram from your random sample, how would you describe the population
of participants for your chosen IAT data set? Do you think the population is similar to the U.S.
population?
Frequency Frequency.
3-4 Regulation of miRNA availability miRNA genes are transcriptionally.pdf
3.4 Regulation of miRNA availability miRNA genes are transcriptionally regulated just like any
other gene, so their levels in the cell can be controlled through these routes. However, there is
one additional way in which the availability of miRNAs within a cell can be regulated. This is
through the hybridisation to competitive endogenous RNAs. These RNA chains appear to act as
'sponges', competing with target mRNAs within a cell for binding, and therefore acting as
regulators for the effects of a miRNA (Figure 3.6). Figure 3.6 Endogenous RNAs, including
circular RNAs, can serve as regulators of miRNAs through competitive binding. Competitive
regulation of miRNAs in the cellular pool serves to regulate both the translation blocking effects
of 3 UTR binding and the targeting of mRNAs for degradation. Schematic diagram to show how
endogenous RNAs can regulate miRNAs through competitive binding. The blue background
indicates the cytosol, mRNA are orange strands and the miRNAs are magenta. At the centre is a
pool of 6 miRNAs shown, which can target mRNA for degradation (bottom) or bind the 3'UTR
of mRNA to block translation of the mRNA (top right). However, this miRNA regulatory role is
itself subject to regulation through competitive binding with endogenous RNAs such as the
circular RNA pictured (top left). The miRNAs bound to circular RNA are not available to
regulate the mRNA until they are released. One of the first well-characterised examples of this
was provided by Hansen et al. (2013). These researchers identified a circular RNA chain called
ciRS-7 in the mouse brain (see Figure 3.7a, left). The ciRS-7 RNA contains over 70 sites with
sequence complementarity to miR 7 (Figure 3.7b). (b) View larger image Figure 3.7 The circular
RNA ciRS-7 acts as a sponge, regulating the availability of miRNA miR-7. (a) Both are
expressed in the same cells in the brain, as shown by similar patterns of brown staining in mouse
brain sections. (b) ciRS-7 carries multiple target sites for miR-7, drawn here to represent the base
conservation along ciRS-7 for each site complementary to miR 7 . for miR-7) acting as a sponge
to regulate the availability of miRNA miR-7. a. Mouse brain sections stained with a probe to
detect ciRS-7 (left) and miR-7 (right). Note the similar distribution of brown staining in both
images indicating similar distribution patterns of both miRNA and ciRS-7 in the mouse brain
sections (eg the ' C '-shaped brown staining in the hippocampus region; you can ignore the
staining intensity differences between the two images in the cortex). b. The orange bar represents
the gene for ciRS- 7 gene. Above it is a graph showing degree of similarity to the miR-7 RNA
sequence. The taller the hight of the black block, the closer the match. Note that there are over 70
such conserved sites showing sequence complementarity to miR 7 . On the right hand site a
dotted box shows the region enlarged (below the orange ciRS-7 RNA bar) which shows many
black boxes co.
3-7 Response to PowerPoints 1- List three social roles you hold- Name.pdf
3.7 Response to PowerPoints
1. List three social roles you hold. Name two Social Role Sets within one of these.
2. What are the three agents of socialization that researchers propose are the most important in
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3. What are the three things that Jill Molli discusses in her talk, Reaching for the Stars?
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doing work?
getting an education?
using money?
making your own decisions?
achieving success?
developing talents?.
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5 . Find the probability that (i) X exceeds 55, (ii) X is between 45 and 57, (iii) X is less than 63 ,
(iv) X is more than 75..
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flows from the into the pharynx and then into the before entering the trachea. From the trachea,
air enters the left and right and eventually into multiple generations of smaller tubes called.
smaller tubes end in clusters of air sacs called , These.
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