Applying your knowledge of metabolism, glycolysis starts with one molecule of glucose (6C) and produces a net total of __________.
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Applying your knowledge of metabolism, glycolysis starts with one molecule of glucose (6C) and produces a net total of __________.
| 1) one pyruvates; 2 NADH; 2 ATP |
| 2) one pyruvate; 2 NADH; 4 ATP |
| 3) two pyruvates; 4 NADH; 2 ATP |
| 4) two pyruvates; 2 NADH; 2 ATP |
In: Biology
1. Put the general step in order necessary to create bacteria capable of producing human insulin.
step 1
step 2
step 3
step 4
step 5
a. splice the human insulin DNA into the bacterial plasmid
b. Cut the bacteria plasmid with HindIII
c. Treat bacterial to induce transformation
d. culture bacteria and isolate the protein
e. cut the bacteria plasmid with BamH1
f. isolate and cut the human insulin gene with BamH1
2. Human DNA cut with BamH1 can be joined to
a. human DNA cut with HindiIII
b. bacteria DNA cut with BamH1
c. Human DNA that is uncut
d. none of the above
e. bacterial DNA that is uncut
3. which of the following could not be a recognition site of a palindromic restriction endonuclease?
a. GAATTC
CTTAAG
b. ATCGAT
TAGCTA
c. CTGCAG
GACGTC
d. GCTTGC
CGAACG
e. GGATCC
CCTAGG
4. Because eukaryotic genes contain introns, they cannot be translated by bacteria, which lack RNA-splicing machinery. But if you want to engineer a bacterium to produce a eukaryotic protein (such as insulin), you can synthesize a gene without introns. The best way to do this is to:
a. alter the bacteria so that they can splice RNA
b. Use a restriction enzyme to remove introns from the gene
c. work backward from mRNA to make a version of the gene without introns
5. The gene for human growth hormone (HGH) can be inserted into the genome of bacteria. The bacteria that take up the HGH gene can transcribe and translate this gene into small quantities of this protein. How is this technology possible?
a. bacteria employ the same genetic code as humans
b. Humans require HGH grow normally.
c. Reproductive cloning is possible only in bacteria
d. The genomes of bacteria and human are similar
6. In the process of gel electrophoresis, DNA segment can be separated from each other based on?
a. the ratio of thymine to adenine base-pairs compared to cytosine to guanine base-pairs
b. the fact that some segments are negatively charged while others are positively charged.
c. the fact that some of the DNA will be single-stranded while others will be double-stranded
d. the length of each base-pair segment
7. which of the following is not true about restriction endonucleases?
a. restriction endonucleases cut in an internal region of the DNA
b. Restriction endonucleases are used by bacteria to cut viral DNA
c. restriction endonuclease can produce "sticky ends."
d. Restriction endonucleases are only useful to scientists if they cut specific recognition sites.
8. you are given a linear piece of DNA Gel electrophoresis and restriction digestion results in the following data:
DNA + Ecoli produces two bands of 800bp and 200 bp
DNA + BamHI produces one band of 500 bp
DNA + Ecoli + BamHI produces three bands of 500bp, 300bp, and 200bp
Which of the following is not true?
a. there is a single Ecoli recognition site in the DNA
b. There are two Ecoli recognition sites in the DAN
c. There is a single BamHI recognition site in the DAN
d. the uncut DNA would produce a single band of 1.000bp
9. sequences in DNA that restriction enzymes bind to and cut are mostly:
a. random sequences
b. symmetrical about the midpoint
c. antiparallel
d. not symmetrical about the midpoint.
10. the single strand ends of DNA molecules can be joined together by:
a. restriction endonucleases
b. DNA polymerase
c. RNA polymerase
d. DNA ligase
11. If a circular piece of DNA has three sites for a particular restriction enzyme, how many fragments will be generated by complete digestion with that enzyme .................
In: Biology
Berkley Pit lake
1. What types of microbes would one expect to be living in such
polluted water?
2. Suggest some possible ways that microbes survive and even thrive
under such conditions.
3. Identify an environment similar to the Berkeley Pit. Describe
the environment, the pollutant and the possibility of environmental
hazard, if you think it would cause one..
In: Biology
What is the name of the part of the microscope that the objectives are attached to? (choose the best answer)
The purpose of melanocytes is to protect the other cells from becoming damaged and turning into cancer cells.
Select one:
True
False
Question 12
It is amazing that when we swim in a pool, we do not absorb the water from the pool into our bodies. Which layer of the epidermis is responsible for this?
Select one:
a. stratum basale
b. stratum spinosum
c. stratum granulosum
d. stratum lucidum
e. stratum corneum
Question 13
Which knob moves the stage up and down more quickly - the coarse focus knob or the fine focus knob?
Select one:
a. coarse focus knob
b. fine focus knob
Which of the following organ systems does the pancreas belong to:
Select one or more:
a. endocrine
b. reproductive
c. immune
d. digestive
The thumb is lateral to the middle finger.
Select one:
True
False
The elbow is distal to the wrist.
Select one:
True
False
In: Biology
What are some connections between the outputs of photosynthesis and your life, and the life of most animals on the planet?
In: Biology
1.Lipids
a.Yield less energy per gram than do carbohydrates
b.Include cartilage and chitin
c.Include fats consisting of one fatty-acid molecule and three glycerol molecules
d.Are composed of monosaccharides
e.None of the above
2.The endoplasmic reticulum
a Serves as the internal transportation system of a cell
b Is the inner membrane of the mitochondria
c Is characterized by the presence of ribosomes throughout
d Manufactures ATP
e Is found in the nucleus as well as in the cytoplasm
3.
Photosynthesis is associated with all of the following EXCEPT
a Chloroplasts
b Plastids
c Grana
d Thylakoid
e Vacuoles
4.
Which type of organelle can break down substances without oxygen and in a low pH environment?
a Peroxisome
b Lysosome
c Central vacuole
d Mitochondria
5.
Which statement is true of plasma membranes?
a They have molecules on their surfaces that identify them
b They are essentially impermeable
c They are basically static, nonchanging structures
d They are hydrophilic barriers between cells
e They function primarily through the activity of their carbohydrates
In: Biology
what are some of the most common clinical and pathological manifestations of human immunity
In: Biology
Discuss the statement that “DNA isn’t just a sequence of letters; it’s not just a script. DNA is a dynamic movie in which our experiences are being written.” How does this relate to Gottlieb’s theory of probabilistic epigenesis? 100 or more words essay
In: Biology
. Compare/ contrast (3 pts each) a. Give one characteristic that is the same between X-inactivation and genomic imprinting, then give one characteristic that is different between them. b. Give one characteristic that is the same between autosomal recessive and X-linked recessive inheritance, then give one characteristic that is different between them. c. Give one characteristic that is the same between hemophilia and congenital hypertrichosis, then give one characteristic that is different between them.
In: Biology
What is the most common mutation found in the CFTR gene? c. Sickle cell anemia is also inherited as an autosomal recessive trait. What gene is mutated to cause sickle cell anemia? (1 pt) d. Why is it advantageous for a person to be heterozygous for the sickle cell trait? (2 pts)
In: Biology
In: Biology
Influenza viruses gain entry into their host cells by attachment to N-acetylneuraminic acid residues on the cell surface, followed by receptor-mediated endocytosis. What effect would the following treatments have on attachment of the virion to a susceptible cell.
i.Treatment of the susceptible cell with neuraminidase
ii.Treatment of the susceptible cell with NH4 Cl to prevent lowering of lysosomal pH
iii. Treatment of the susceptible cell with actinomycin D, which prevents synthesis of messenger mRNA
b. What effect would these same treatments have on uncoating of the virion?
C. What effect would each of these treatments have on the burst size of an influenza infection?
In: Biology
You’ve identified an antigenic protein unique to multidrug resistant Staphylococcus aureus (MRSA). You’d like to create a MRSA vaccine based on an in vitro transcribed mRNA. Several answers will be acceptable, since there are several technical approaches to carry out the same tasks. Specifically:
(1 pt) What molecular method could you use to clone the gene from S. aureus? (Name a specific approach from earlier in the course).
(1 pt) What will be the components of your IVT mRNA itself?
(1 pt) What steps could you take to reduce the immunogenicity of the IVT mRNA?
(1 pt) What is one way you might deliver the IVT mRNA into a patient?
(1 pt) You find that the S. aureus protein is poorly expressed in human cells. How could you change your
mRNA sequence to boost ex
In: Biology
Create a table of the following skin diseases:
5) Pseudomembranous colitis
6) Hepatitis
7) Salmonellosis
8) Campylobacter diarrhea
9) Amebiasis
10) Shigellosis
11) Typhoid fever
12) Mumps
13) Viral Gastroenteritis
14) Pinworm
15) Anisakiasis
Create columns as shown below:
| Name of Disease | Causative Agent(s) | Common Mode of Transmission | Pathogenesis and Virulence factors | Epidemiology | Prevention and Treatment |
In: Biology
Explain why demographic bottlenecks and invasive species are problematic for ecological restoration.
In: Biology