Homework Help for Biology (page 1086)

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In SSP-PCR, why is it important to determine genomic DNA concentration and quality for interpretation of the test results?

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1 Jan 2018

Describe the stages of gene transcription. Genes have special internal DNA sequences that form hairpins and specify a transcription pause. Explain in a mechanistic manner how these sequences affect the rate of transcription and discuss their potential benefits for transcription and translation.

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1 Jan 2018

why food residue smells when it becomes into feces?

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1 Jan 2018

Why does the thoracic cavity expand in volume?

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1 Jan 2018

Does the United States of America have a moral obligation to provide medical treatment for illegal immigrants? Why or why not?

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1 Jan 2018

In dideoxy sequencing method,only one primer is used in each reaction tube during DNA synthesis. Why not use both forward and reverse primers in the same tube simultaneously, as in PCR?

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1 Jan 2018

1) Density-independent factors may alter birth rates ____.

A but never death rates
B in both small and large populations
C in populations as individuals increase in number

2) Many antibiotics work by inhibiting the synthesis of peptidoglycan, a component of the bacterial cell wall. Which of the following could potentially be a similar target for anti-fungal drugs? (there aren't any real drugs that actually target this fungal feature, but 1 class of anti-fungals does target fungi unique synthesis pathways for different membrane components)

A inhibiting the synthesis of cellulose in fungi
B inhibiting the synthesis of chitin in fungi
C inhibiting the synthesis of peptidoglycan in fungi
D inhibiting the synthesis of lignin in fungi

3) In which lifecycles are spores produced through meiosis? (select ALL correct answers)

A plant-like lifecycle in protists and land plant lifecycle (i.e., the sporic lifecycle, or the alternation of generations)
B

the fungal lifecycle (i.e., for most lineages but not the Chytrids and unknown in Microsporidians and Glomeromycetes)

C animal-like lifecycle in protists (i.e., gametic)
D fungi-like lifecycle in protists (i.e., the zygotic lifecycle)

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1 Jan 2018

2. Describe the current 3-domain system of classification and explain why it replaced the old 5-kingdom system. Explain the major differences between these two taxonomic systems.

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1 Jan 2018

The power generated during the vertical jump test depends on which metabolic pathway to generate ATP

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1 Jan 2018

A man with prostate cancer has his prostate removed, and only his prostate removed. Which of the below statements is TRUE about the man after prostate removal?

-Fluid from the bulbourethral glands will not be added to the ejaculate because it is only released after input of fluid from the prostate.

-All of these statements are true

-His fertility will decrease because the ejaculate will not be basic enough to counteract the acidic environment of the female vagina.

-His fertility will decrease because there will not be enough seminal fluid produced to carry the sperm from the epididymis into the vas deferens.

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1 Jan 2018

A. Explain the reason why the cell requires a mechanism for identifying specific sequences of DNA.

B. On average, how often would the nucleotide sequence CGATTG be expected to occur in a DNA strand 4000 bases long? Show your work and explain your answer.

C. Molecular processes depend upon sequence-specific interactions of proteins with DNA. Recognition sequences can be 4, 5, 6, 7, or even 8 base pairs in length for a single protein. What might be the advantages of a short recognition sequence? What might be the advantage of a longer recognition sequence?

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1 Jan 2018

Often, people who smoke cigarettes are more susceptible to the effects of toxic chemicals. Explain the basis for this observation from a toxicology perspective

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1 Jan 2018

Please read this article http://www.sciencedaily.com/releases/2013/08/130828131841.htm and express your opinion of this type of article. What use is this information? Explain....

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1 Jan 2018

What is the Hormonal-Side Effect hypothesis as it applies to Hyenas, and what are some problems with it? Is it the likely answer for the female hyena pseudopenis or is there another more likely possibility? If so, what is it?

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1 Jan 2018

The wikipedia article on the dopamine transporter gives examplesof some drugs whose effects are mediated by the inhibition of thedopamine transporter, such as cocaine and amphetamines. Are thereany drugs or substances whose mechanism of action involvesincreasing the activity of the dopamine transporter, i.e., a "DATreleaser?"

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1 Jan 2018