Complete the table below as if you were going to use it as a study aid. Assume all values are per 1 molecule of glucose that begins the cellular respiration pathway. 

Shown following is the first 30 amino acid (one-letter code) region of this putative amino acid sequence for p18:

¹YFNPS     ^6TSDWPT    ¹¹LAPAN    ¹⁶YTFLF    ²¹FLARY    ²⁶WYINL³⁰

A) Based on the partial amino acid sequence provided, do you think that it is more likely that this region of p18 associates with a cellular membrane or is exposed to the cytosol?

B) Why or why not?  

C) Describe how you would experimentally demonstrate if p18 was associated with the membrane or the cytosol.

what does the polymerase chain reaction (PCR) accomplish?

1) PCR converts RNA to DNA

2) PCR corrects mutation in a gene

3) PCR makes many copies of DNA segment

4) PCR joins short segments of DNA to make one long segment

how does the ribosome select the next amino acid to add to a growing polypeptide chain?

1) the ribosome selects the amino acid that can form hydrogen bonds with the mRNA

2) the ribosome selects a tRNA that base-pairs with a codon

3) the ribosome senses that the amino acid fits into a binding pocket on the ribosome

4) the ribosome sense that the amino acid has the same codon as the DNA

• What component of enzyme structure is responsible for enzyme specificity?

• How did the lactose intolerance test that pei took provide evidence that she was lactose intolerant?

Isolation and characterization of the enzyme alkaline phosphate from escherichia coli: protein purification.

2) why is it necessary to dialyze the enzyme after ammonium sulfate precipitation?

6. A bacterium does not want to waste energy synthesizing the amino acid arginine if arginine is present in its diet. Therefore, when arginine is present, it activates a repressor protein to prevent transcription of genes that code for enzyme to make arginine. This is an example of what type of regulation? Please describe the mechanism of this regulation.

7. Prokaryotic genetic information transferring processusually acts as target of antibiotics. We observed a new compound with antibiotic action, and we have already proved this compound do not affect the bacterial replication process. Based on your knowledge about gene information transmission (DNA replication, transcription and translation), please assume the possible mechanism(s). Please use your knowledge to make an experiment to prove your assuming?

8. The initiation of transcription in eukaryotes is a key pointof gene expression regulation. The interaction between biological macromolecules (protein-protein, protein-nucleotide) is very important in the expression regulation of eukaryotic genes. Can you give two examples of regulatory mechanisms related to transcription initiation? Describe the structural features of the molecules.

Choose one or two of this questions to which you are the most certain. thanks!!!

Scientists have hypothesized that life arose from the mix of chemical compounds present in the prebiotic soup on the Earth's surface. Experiments in labs today have shown that fatty acids can spontaneously form various organized structures, including vesicles. How does this characteristic of fatty acids work in conjunction with known early Earth conditions to suggest a potential explanation for the origin of life?

a. evidence of minerals such as iron on early Earth supports the idea that compounds such as fatty acids could have formed vesicles, trapping these minerals and forming catalytic reaction centers.

b. Evidence of simple carbon compounds such as methane on early Earth supports the idea that larger carbon compounds such as fatty acids could have spontaneously evolved.

c. Evidence of volcanic gases such as hydrogen on early Earth support the idea that the environment was highly reactive, which would have allowed fatty acids to polymerize to form much larger biomolecules.

d. Evidence of water on early Earth supports the idea that simple fatty acids could have undergone self-assemble in a watery environment to form the first cell membranes.

An explanation of your answer would be greatly appreciated.

1.

Which of the following events does not occur in PCR?    

Group of answer choices

A the DNA is denatured by high temperature

B the amount of DNA would double during each cycle, resulting in 8 times the original amount of DNA after 3 cycles

C Taq DNA polymerase and deoxyribonucleotides are used to elongate the primer strand of DNA

D the mixture is heated to allow primers to complementary base pair to the deoxyribonucleotides

2.

Which of the following is not a difference between DNA and RNA?

Group of answer choices

A in RNA, the sugar is deoxyribose, in DNA it is ribose

B No answer text provided.

C in RNA the base U is used in place of T in DNA

D in RNA, the sugar is ribose, instead of DNA it is deoxyribose

3.

a- (two words) ____ _____is the enzyme used in DNA fingerprinting

b- _____ blotting technique in used in DNA fingerprinting

c- Upon electrophoresis, DNA will migrate towards the ________ pole.

4.

In the dideoxy DNA sequencing method, the enzyme used is RNA polymerase.

Group of answer choices

True

False

5.

Meiosis occurs in one division and results in two daughter cells that are genetically identical.

Group of answer choices

True

False

6.

In a female, the inactivated Y chromosome is an example of heterochromatin.

Group of answer choices

True

False

7.

On a human chromosome, the long arm is called the "p arm" and the short arm is the "q arm."

Group of answer choices

True

False

1)Cell walls are rigid and resist expansion, which allows the pressure to build inside a cell when it absorbs water. The force exerted by pressing water against the cell wall is called [BLANK1], which is a key feature that allows plants to stand upright.

2)Prokaryotes concentrate DNA in a discrete region of the cell interior known as the BLANK . They often contain additional small circular molecules of DNA known as BLANK that carry a small number of genes that are commonly transferred between bacteria through thread-like hollow structures known as BLANK . Genes for antibiotic resistance are transferred, which accounts for the quick spread of antibiotic resistance among bacterial populations.

3)The [1BLANK] is a rigid structure that surrounds the plasma membrane of some organisms to help maintain the cell shape and volume and also functions in support and protection.

4)

The shape of the phospholipid structure is determined by the bulkiness of the head group relative to that of the hydrophobic tail. Lipids with bulky heads and a single hydrophobic fatty acid tail forms  spherical structures called what?

5)The BLANK and BLANK are both semi-autonomous organelles that grow and multiply independently and contain their own genomes.

6)Protein sorting is a process by which proteins end up where they need to be to perform their function.  Proteins produced by free ribosomes are often directed to their proper cellular compartments by means of particular amino acids called signal sequences.

Match the type of signal sequence used in the making of proteins that direct them to the correct cellular destination.