How does primary endosymbiosis from more complex organisms?

You are a scientist studying the possibility of life on other planets. You find a planet that has a harsher environment then earth what type of organism Archaea, Bacteria, or Eukaryote would you expect to find there? Why?

1a)Explain cell-matrix interactions. Why they are important for the control of growth and development of tissue engineered product?

1b)b. What is the relation between a material surface and cell fate?

Provide an overview of how gel electrophoresis can be used to analyse genes after

treatment with restriction enzymes or amplification using PCR.

Comment on the reliability of each of the protein concentrations in a set of test tubes where the absorbances are know but the unknown concentration were determine from a standard curve.

why some type of viruses could cause cancel while their is not any bacterial could cause cancer? what is the reason that make virus that virulence ?

When given the basis of the genetic test, analyse an agarose gel electrophoresis

result to genotype individuals or identify mutations.

Explain at least three issues studies have found regarding elder abuse.

A. List the 3 stages of translation.  B. Briefly describe what happens at each stage.

Transcription of the mammalian Cytochrome P450 1A1 gene is induced by xenobiotics such as dioxin. The mechanism of induction illustrates many steps which are typical of signal-regulated transcription factors. （16 marks）

1. Describe in detail the steps involved in dioxin induction of this gene
2. Outline an in vitro experiment you could carry out to show that Arnt is essential for the dioxin receptor to bind to the response element of the Cytochrome P450 1A1 gene.

no more detail！Thx

Explain the process of DNA replication in E.coli. Include a description of the role of the key enzymes in your discussion. [14 marks]

What types of energy were people living in the area now called California using 500 years ago?

What are the “three Rs” of waste reduction, which is the most efficient and important? Which takes the most energy?

Part 4. For each of the following research hypotheses identify is the MOST IDEAL (strongest evidence) epidemiologic study design to address the hypothesis AND justify your choice. [Design/Method Selection]

a. Contaminated egg salad at a deli caused an outbreak of severe gastrointestinal disease.

b. Low birthweight causes adult-onset asthma.

c. Prenatal cocaine exposure affects later child cognitive performance.

d. Gene polymorphisms are associated with Type 1 diabetes.

e. Milk intake midlife is protective for the development of late-onset dementia at >70 years of age.

what are the major components of the cytoskeleton? Explain each by listing.

1. How many spermatids are formed after spermatogenesis?
2. What is the epididymis purpose?
3. What is the function of the Ductus (Vas) Deferens?
4. What does the seminal vesicle do? What volume is contributed to the semen?
5. Why is it so important that the semen be alkaline?

Use a numerical example to demonstrate that selection is not efficient at removing deleterious recessive alleles from a population.

First, choose a value of q, the frequency of the deleterious recessive allele in generation 1. What fraction of the population is homozygous for the deleterious recessive?

Now, select a value for s and calculate the expected frequency of the allele in the next generation, q’. What fraction of the population is homozygous for the deleterious recessive in this generation?