Essay 3: Signs of Frailty:

1) First, describe two proven signs or markers of clinical frailty; Then, 2) for each sign, discuss one possible intervention that could help to prevent frailty if detected earlier.

protists are eukaryotic organism and many of them are unicellular. what two membrane bound organelles could a unicellular protist use to eat and what membrane transport mechanism would produce one of the membrane bound organelles used in this eating process? in addition to naming the two membrane bound organelles state the role each of them would be playing in the eating process.

Choose one of the following traits (1) Dominant/recessive OR Codominant OR Incomplete dominance OR Sex-linked (2) choose a trait that fits into that category that was not mentioned in the PPT (3) briefly describe the trait and (4) what is the current percentage of people that have this trait in the US.

Describe each of the following repair mechanisms. Your descriptions should (1) differentiate between the mechanisms, (2) indicate under what circumstances each mechanism is active, (3) make clear the basic steps of each mechanism and (4) identify the key enzymes involved. You might consider creating a diagram or table to assist you with your explanation.

a.   proofreading

b.   mismatch repair

c.   excision repair (focus on nucleotide excision repair)

d.   photoreactivation       

e.   recombinational repair

1. a. Explain what mutations are, what causes them and whether mutations are beneficial or harmful to organisms and why.

b. Define and distinguish between frameshift, missense, nonsense, and silent mutations.

Chapter 6 - Protozoa: Intestinal Flagellates and Ciliates

1. Omneaex The intracellular portion of a flagellum
2. oyctstemo The rudimentary mouth
3. onlioasmoc    An infection that originates in and is acquired from a medical facility
4. muglelalf    Ectoplasm extension that provides locomotion
5. xaytleos The axial rod functioning as a support in flagellates
6. tsrpecy    Differentiated phase in protozoans that lays down the resting cyst
7. casto    A thin, firm, rodlike structure running along the base of the undulating membrane
8. aclii    Multiple hairlike processes attached to a surface of a cell
9. udtnaignlu bamemre A membrane extending out like a fin along the outer edge of the body of certain protozoa

10. oaztiehomporaosg A class of protozoa that use flagella for locomotion

2. Suppose that you isolated an enveloped helical RNA virus. Purified RNA from this virus is capable of supporting translation in a rabbit reticulocyte cell‑free translation system or in any other such system Further analysis indicates that this virus replication is inhibited if infected cells are incubated with protease inhibitor such as trypsin inhibitor. Based on this information, discuss the mechanism by which this virus replicates its genome in infected susceptible, permissive cells.

The lac operon of E. coli encodes the two enzymes ß-Galactosidase and Permease. Indicate in the following table whether these enzymes are synthesized (“+”) or not (“–“) given the genotypes in the left column and the presence or absence of the inducer. Note that some of the genotypes are partial diploids, i.e. a second copy of the operon is present on a separate plasmid.

Compare and contrast the causes and consequences of habitat destruction vs. habitat fragmentation. Try to capture the main similarities and differences between these threats to biodiversity.

Australia has recently been affected by rampant wildfires that have resulted in the deaths of many animals. Before the fires, the Australian Koala population was at 239,000. Ecologists estimate around 8,000 died in the fires. The koala haploid genome size is approximately 3.5x10^9bp (remember that koalas, like most animals, are diploid), and the rate of mutation occurrence is 2x10^-7 mutations/site/generation.

How many new mutations are predicted to occur in the functional region (8%) of the genome each generation? (Show your work/outline the equations in at least 2 steps, 1 pt)

If a single koala population lost 90% of its residents in the fires, explain how the effects of genetic drift increase and the effects of natural selection decrease as a result of the population shrinking? (1-2 sentences, 1 pt)

In the common bluebell, two linked, autosomal genes control flower color and plant height. With the given information, find the expected F1 generation phenotypes and the frequencies of the F1 generation.

B (blue flowers) is dominant to b (white flowers)

T (tall plants) is dominant to t (dwarf plants)

If the crossover frequency between the two loci is 26%, what will the expected F1 phenotypes and their frequencies from the following cross:

a) BT//bt x bt//bt

b) Bt//bT x bt//bt

c) Bt//bT x Bt//bT

This question was uploaded and answered here, https://www.chegg.com/homework-help/questions-and-answers/3-4-pts-common-bluebell-two-linked-autosomal-genes-control-flower-color-plant-height-follo-q45840263, except I'm not sure how the answered got to their answers and it doesn't seem to answer what the question is looking for. TIA

What needs to happen for nuclear import as cell exits mitosis?

Explain the basic proteins/process involved in cytokinesis?

Describe how the primary and secondary endosymbiosis relates to both the Alvaeolates and Chlorarachniophytes by including where the membrane originates and provide examples of which organisms may have been involved in each stage of symbiosis

Explain the different steps of translation. You will first present all the different players in the this molecular choreography and explain the different steps. *