Week 2 Discussion_ Animal v

Please give me just the answers, no need for explantion.   What are the enzymes that untwist the double helix at the replication forks called? -Helicases -Transcription Factors -Flipases -Codons 2- Reproduction of the DNA occurs during (????) of the cell cycle. S Phase G1 Phase M Phase G0 Phase G2 Phase 3- The totality of an organism’s chemical reactions is referred to as its (????). -Problem -Metabolism -Gestalt -Oxidative phosphorylation

When you are extracting DNA one of the first steps is to dissolve the cell membranes with ice cold ethanol.  True or False

Hi can someone help me with this question please?

You are studying the M-cyclin. You treat mitotic cells with an inhibitor of the proteasome and find that M-cyclin is no longer degraded and that this prolongs mitosis. You also find that in the presence of the inhibitor, M-cyclin is now running slower/larger in a Western than you have previously observed. In 1-2 sentences, explain why this might be happening. Edit View Insert Format Tools Table 12pt Paragraph B IU Αν S A C I AT²✓ #tv A MacBook Air X : G

Please help a bit confused, I have attached question and answer box

Where does transcription take place? nucleus cytoplasm ribosome mitochondria Why must transcription occur where DNA can be found? because DNA can't leave because ribosomes are in the nucleus because DNA polymerase is found there because helicase unzips the DNA How many nucleotides equal 1 amino acid? 1 3 TRANSCRIBE this DNA sequence: TACGTTACT AUGCAAUGA ATGCAATGA AUGGATUGA TACGTTACT É O O O O O O O O

What is the rationale for synthesizing and rapidly degrading p53 protein in the cell?  please give me new answer

All of the following statements regarding nucleosomes are true EXCEPT A each bead-like structure contains 8 molecules of histones H1, H2A, H2B, H3 and H4 the bead like structures are made up of core histones wrapped around by the DNA strands the histone proteins in the nucleosomes contain positively charged amino acids that interact with the negatively charged DNA D the bead like structures are linked to each other by the DNA chain

Eukaryotic Genetic Sequence: 5'-TAC CAT GAT CCC TAT - 3' 1. What would be the newly synthesized DNA strand and explain how the strand will be replicated. Where in the cell would this occur? 2. What would be the synthesized mRNA strand, and how is it transcribed from the original DNA strand, and then converted from a pre-mRNA strand to a mature mRNA? Where in the cell does this occur? 3. What would be the anti-codons for the tRNA. What are the amino acids generated based on the RNA. How are these amino acids translated into protein and where in the cell does this happen?

Write TRUE/FALSE in number 6,7,8,9,10 ____6. “ Prokaryotic ribosomes is made of 40S and 60S subunits.” ____7. “ Prokaryotic DNA is normally complexed with histone proteins.” ____8. It is also possible for a linear DNA (i.e. eukaryotic DNA) to assume a supercoiled conformation. ____9. An Adenine-Thymine base-pair contain 3 H-bonds. ____10. If circular DNA is positively supercoiled, the writhe will be clockwise.

Your friend sends you two cancerous cell lines to examine and determine possible mutations. The results are shown below: Cell Line Mutation WT none (wild type DNA) 1 a deletion at the same region on both copies of chromosome 4 a point mutation in a gene on only one copy of chromosome 7 Based on this data, what type of geńe is mutated in each of the cell lines? Select all that apply O Cell line 2 has a mutation in an oncogene Cell line 1 has a mutation in a tumor suppressor gene Cell line 1 has a mutation in an proto-oncogene Cell line 2 has a mutation in a tumor suppressor gene

Describe the structure and location of a D-loop.

Section B: True / False (5 marks) 1. Primase has a DNA dependent RNA polymerase activity. 2. 7-methylguanosine cap is added to the 5' end of the DNA after replication in eukaryotes. 3. snRNA is produced in transcription. 4. Initiator tRNA enter ribosome with the help of EF-Tu. 5. At low oxygen partial pressure Po2, myoglobin has lower oxygen affinity than hemoglobin.

There are two ways in which rearrangement of domain- encoding gene segments can result in novel protein functions. Which of the following is NOT included?   Domain shuffling   Domain duplication   Domain replication   Domain substitution Which of the following features are NOT shared by prokaryotic and eukaryotic cells?      shared metabolic pathways   similar mechanism for synthesizing and inserting membrane proteins      plasma membrane of similar structure    nucleosomes of similar construction

Please do not copy paste from web I will report if you do it.

why is it more advantageous for the cell to have its DNA fused to the cell wall as opposed to dispersed freely in the cell?

Some plants have a hard, cellulose layer protecting them. This hardened layer will prevent the detergent from breaking down the cell wall. Can you think of another way to break open the cells?   Note: The cell lysis and mashing the fruit with your hands or using a blender helps homogenize the DNA. Homogenization is the process of releasing DNA from the nuclei of the cells by breaking apart the cell walls, plasma membranes and nuclear envelope. It also helps to create a uniform mixture.

The interphase is the part of the eukaryotic cell cycle that is most transcriptionally active. Gene regulation during this phase involves changes in the chromatin. a) What is chromatin? b) How can the chromatin structure change?

can you match the correct

If a section of a chromosome is heavily methylated, which of the following is likely to be true? Group of answer choices That portion of the chromosome is transcriptionally active That portion of the chromosome consists of euchromatin That portion of the chromosome is transcriptionally quiet RNA polymerase will have easy access to the DNA in that region

Were you able to identify a cell undergoing cytokinesis in the onion cell? Why? What extra layer must be formed in an onion cell to separate the daughter cells?   please do not copy from google and explain briefly

Pls help me to find the correct answer

My question is attached

locate the prophase (use arrow please) then describe the appearance of the DNA, spindle fibers and location of the chromosomes

3) Examine the graph showing the relative percentage normal and cancer cells spend in various stages of the cell cycle. Based on the information in the graphs, infer how cancer cells differ from typical, noncancerous cells. Select ALL that apply.   A) Cancer cells do not replicate their DNA.     B) Cancer cells replicate their DNA too quickly.     C) Cancer cells do not go through interphase during their cell cycle.     D) Cancer cells spend more time dividing compared to typical cells.     E) Cancer cells do not always grow to the same size as typical cells.   more than 1 answer. not graded

In Figure 8-5, draw the “one gene” at much higher resolution with the following components: DNA, RNA polymerase(s), RNA(s).

How does histone acetylation change chromatin structure? Group of answer choices 1. Histones lose their positive charge so the negatively charged DNA is more tightly packed   2. Histones lose their positive charge so the negatively charged DNA is less tightly packed   3. Histones lose their negative charge so the positively charged DNA is more tightly packed 4. Histones lose their negative charge so the positively charged DNA is less tightly packed

I need help please!!!

4) Describe in detail how p53 and MDM2 regulate cell division in a normal, healthy cell. You should describe 1) how these proteins cooperate to allow a cell to go through the cell cycle, 2) how they cooperate to stop the cell cycle, and 3) how they allow the cell cycle to continue again after having stopped it initially. You may use point form if you want.

help please !!!! thank you in advance