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1 May 2019

I need help understanding what marks the beginning of a prokaryotic chromosome. What word would fill in this blank?

A GENE is found in DNA sequences. Genes code for AMINO ACIDS. The PROMOTER marks the start of a gene. The TRANSCRIPTION TERMINATOR mark the end of a gene. The ____ marks the beginning og a prokaryotic chromosome.

Along with helping me understand what word to put in the blank, could you please explain why the words in all caps are the correct term to be used in that sentence? I know those words are right, but I don't know why they are right. Please keep it basic, I am just learning and not required to understand in depth.

Thank you!

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Elin HesselLv2

2 May 2019

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Related questions

As you may know, gene transcription begins with the assembly of the transcriptional machinery (TFIIA-H proteins) at the core promoter of genes. Where do you think core promoters are more likely to be located? Nucleosome DNA or Linker DNA?

Go ahead and formulate a hypothesis on the more likely location of core promoters of genes in DNA, and defend it with molecular biology arguments (in other words, why would one or the other be a preferred location for core promoters, based on what you know about nucleosome DNA and linker DNA?).

Then, I want you to imagine that you have access to a standard molecular genetics lab, and I want you to propose an experimental test of your hypothesis. You donât need to get too technical, just a description of how you would design an experiment that tests your hypothesis, indicating samples, treatments, and the measurements or readouts that that you plan to take. Your imaginary lab has the following equipment:

1) Antibodies for immunoprecipitation: these are molecules that can bind to several kinds of proteins, and allow you to physically pull them down (along with anything that is bound to them). In this case, imagine that you have access to antibodies that allow you to separate any proteins bound to DNA and isolate them along with any DNA bound to them!!

2)DNA sequencer: a machine that allows you to âreadâ the sequence of a given DNA sample.

3)Core promoter sequences: Information about what a typical core promoter sequence looks like.

So go ahead and design an experiment using any combination of one or more of the resources listed above, and do not forget to describe what results you expect to see, should your hypothesis be correct.

Your submission should be 200 words or fewer,

PLEASE use ONLY the equipment mentioned above.

cerisemacaw424

This is a longer question i know, but if you could help me out with this, it would be much apreciated.

READ ALL THESE INSTRUCTIONS BEFORE BEGINNING! There is no time limit, but there is a due date!

You will be provided with a prokaryotic DNA sequence. It is formatted in a way that provides an easier way to keep track of which base you are looking at. That is all the numbers are there for.

You need to locate the CORRECT protein coding region (the upstream sites, start codon, etc.) and submit the corresponding amino acid sequence using the single-letter abbreviations without spaces or hyphens (ie, KDELHDN....) in the submission box provided.

As this is computer-graded, you MUST enter the information correctly as instructed above!!

Some reminders:

Never assume that the only place ATG appears is at the beginning of a coding sequence. Many proteins include methionine as part of their internal sequence.

Finding an ORF (open-reading frame) does not mean that it is a functional gene. Those must have the upstream elements- promoter, ribosome binding site, etc.

For the purposes of this exercise, you may assume that the start codon is 10 bases downstream of the +1 site.

You may also assume that other upstream elements are centered at exactly -10 and -35, but may not be exactly the same as the consensus sequences.

You may use any resources to complete this assignment.

You may attempt this twice.

QUESTION (The teacher said that when it is finishe it should spell out and write some type of sentence

1 ATGAAACGAA AGCGATGCGC GCGAAAGAAC

31 TCATGCATCG CGATAATCTG ATGGAAAGCA

61 ACGCGGGCGA AAGCGCTGAC GAAGTGGAAC

91 ACTGAACCGT CGAAAGCAAA ACACCGCGAT

121 AAGCGGTTGA CAGACGGGCG AGACGACAAA

151 ATATAATCGT GTCTAAGGAG GTCCATGGCG

181 AACTATATTA ACACCGAACG CAACGAAACC

211 AGCATTACCG AAAGCGCGCG CGAAATGATT

241 AACGATCTGG AAAGCAGCTT TCGCATTCCG

271 CCGGAACGCT ATTGATAACA AGTATCCGTA

301 CTGGAAGAGC CCCCGCTATA GATGCCACAC

331 TGTTCAATTT TGGACTAATC TGAATACTTT

361 TCAGCTTGAC AGTATCAAAC CGGCAACGTG

champagneimpala269

I have this questions for my homework i need help with them look please it is important i need help so please give me the correct answers for each question and also please be clear to understand and aslo be correct it is very important becuase i need them so i really need the right answers. please help me and on Questions 6 and 9 please help me with it hope you can help me with the correct answers please

Question 5

At a constant temperature, if you increase the number of unsaturated fatty acid chains in the phospholipid, the membrane will become......

less fluid

more fluid

fluidity will be unchanged

Question 6

Bacteria in a hot spring at 80 degrees celsius would be expected to have ______________ in their cell membrane

high proportions of saturated phospholipids

high proportions of unsaturated phospholipids

an equal ratio of saturated to unsaturated phospholipid

Question 7

Membrane proteins have an important role in membrane fluidity

True

False

Question 8

The HIV virus can't attach to cells that have a mutation in the CCR5 gene and so such individuals are resistant to HIV. What population of people have a higher incidence of the mutant CCR5 gene and why?

europeans because their ancestors survived the bubonic plague

North Americans because their ancestors survived small pox

europeans because they have a longer evolutionary past with HIV

Africans because they have a longer evolutionary past with HIV

Question 9

Nematode trapping fungi have ______________ molecules called ______________ that recognize specific carbohydrates on the surface of the nematode worms. This is how a fungus can recognize that its prey, the nematode worm, has wriggled into the loop. Write two words on lowercase separated by a space with no other syntax

Question 10

Diffusion requires energy

True

False

Question 11

The net direction of molecule movement when molecules diffuse is

down their concentration gradient

random directions

Question 12

In osmosis, water molecules from a solution of higher solute concentration cross a semi-permeable membrane into a solution of lower solute concentration?

True

False

Question 13

Which best defines osmosis?

In osmosis, water from a solution of lower solute concentration move across a semi-permeable membrane into a solution of higher solute concentration?

In osmosis, water from a solution of higher solute concentration move across a semi-permeable membrane into a solution of lower solute concentration?

Question 14

Animal cells placed into a hypotonic solution would most likely?

lyse (burst)

shrink

remain unchanged in size

Question 15