Explain how protein synthesis in Eukaryotes differs from protein synthesis in prokaryotes
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One page summary of recent discovery in the field of genetics.
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Which of the following statements correctly describes telomerase?
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1
Which of the following is not a typical product of ETS?
Group of answer choices
a NAD+
b FAD
c CO2
d H2O
2
Group of answer choices
a membrane lipids are in the cis conformation
b the number of carbons composing the tails are an uneven number
c proteins are embedded within only one membrane leaflet
d the lipid bilayer is “fluid” in regard only in regard to the protein composition
3
The reaction center chlorophyll of photosystem I is known as P700 because:
Group of answer choices
a it absorbs 700 photons per minute
b there are 700 photosystem I components to each chloroplast
c this pigment is best at absorbing light with a wavelength of 700 nm
d there are 700 chlorophyll molecules in the center
4
Which of the following best describes the rate of diffusion for the indicated molecules across a biological membrane going from fastest rate to slowest rate?
Group of answer choices
a sodium ion, glycerol, oxygen
b oxygen, sodium ion, glycerol
c glycerol, oxygen, sodium ion
d oxygen, glycerol, sodium ion
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5
Which of the following is false concerning either photosynthesis or respiration:
Group of answer choices
a the cytochromes of the ETS are located within the matrix
b Light harvesting complexes capture photons in the light dependent reaction
c terminal oxidation involves O2 as the final electron acceptor in ETS
d the cyclic electron flow in photosynthesis is used to maintain the correct ratio of NADPH and ATP, using H+ flow to make additional ATP
6
Which of the following statements is true of fermentation?
Group of answer choices
a it produces more energy per glucose molecule than does aerobic respiration
b it produces a net gain of ATP
c it is an aerobic process
d is used to regenerate NADH
e will produce ethanol and CO2
In: Biology
5
The carbon assimilation (Calvin cycle) stage of photosynthesis requires:
Group of answer choices
ATP, NADPH and CO2
ATP, NAD, and hydrogen
ATP, NADPH, and oxygen
ATP, hydrogen, and oxygen
6
Which of the following would you expect to find predominating in the plasma membrane of a unicellular eukaryotic organism thriving in glacier ice?
Group of answer choices
20 carbon long fatty acids with 1 double bond
16 carbon long fatty acids with 3 double bonds
20 carbon long saturated fatty acids
18 carbon long fatty acids with 1 double bond
5
Which statement is correct about facilitated diffusion?
Group of answer choices
facilitated diffusion requires energy in the form of ATP
facilitated diffusion can transport a molecule against a concentration gradient
facilitated diffusion can occur only in specific cell types
the rate of facilitated diffusion is limited by the number of transport proteins in the membrane
6
Which of the following statements about glycolysis is true:
Group of answer choices
glycolysis does not operate in the absence of O2
glycolysis produces a net gain of ATP
the end products of glycolysis are CO2 and H2O
glycolysis has steps involving oxidation, but not reduction reactions
the enzymes for glycolysis are located in the golgi
7
The oxidized form of this electron carrier is:
Group of answer choices
FADH2
FAD
8
The photosystem that captures light at 680 nm
Group of answer choices
PSII
PSI
9
Location of the light independent reaction
Group of answer choices
Stroma
Thylakoid
10
Which of the following does not occur as the result of the noncyclic flow of electrons in photosynthesis?
Group of answer choices
NADP+ picks up hydrogen ions and electrons, forming NADPH
ADP is phosphorylated to produce ATP
water is split, releasing O2
FADH2 is oxidized into FAD
11
Which of the following is not a major function of the plasma membrane?
Group of answer choices
production of DNA used to make proteins for the cell membrane
regulation of ions and molecules passing into and out of the cell
contact, recognition, and communication between cell types
separation of fluid and contents between the inside and outside of the cell
In: Biology
If you were preparing a 100 mL of a 2% sucrose solution. How much sucrose is needed to make this solution?
How do you make a 1% MgCl2 solution?
When you make coffee and add cream and sugar, what is the solvent?
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An 18-year-old female incurred a deep penetrating injury of the dorsum of her right foot when a kitchen knife fell from a platter she was carrying while going barefoot. The initial injury partially resolved; however, three days later the foot began to swell, become red, and painful. A deep subcutaneous abscess developed, with a central sinus tract from which a cloudy, serous fluid exuded. A gram stain from the wound showed many gram positive cocci in clusters. Colonies isolated from the specimen were described as entire, convex, and smooth, with a slight yellow pigmentation. Beta hemolysis was observed.
In: Biology
The tricuspid and mitral valves are known as the
a. chordae tendineae.
b. semilunar valves.
c. coronary valves.
d. atrioventricular (AV) valves.
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1. If you were preparing a 1 L of a 1M NaCl solution How much NaCl is needed to make this solution?
2. How you would make only 100 mL of a 1M NaCl solution? Show your work.
3. How do you make a 1M MgCl2 solution?
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Which type of tissue is more protective?
1)stratified squamous
2)simple squamous
3)simple columnar
4)pseudostratified columnar
b) true or false? Ligaments are made of dense regular connective tissue.
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Which evolutionary process would you argue is currently causing the largest impact on the evolution of the tropical field cricket in the Hawaiian islands? Be sure to explain why this evolutionary process is having a greater impact than other evolutionary processes. You will be evaluated on the plausibility and provided support (citations needed) of your response
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1) Species with high FST in their native range tend to spread quickly as invasive species. True or false?
2) A marine biologist collects a sample of 200 adult barnacles and determines their genotypes at a locus with 2 alleles (A, a): 60 AA, 120 Aa and 20 aa. The barnacles randomly mate and 100 of their offspring are sampled and genotyped: 36 AA, 48 Aa, 16 aa. She thinks the change in genotypic frequencies is due to natural selection. You're not convinced. Why? 2 pts.
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How does female choice usually operate within cricket populations? That is, do females tend to be choosey, and what criteria do they use to make mating choices? How does female choice work differently for the Kauai field cricket population? Is this difference in female choice an adaptation or not? Explain in details.
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The effects of inhibitors of DNA synthesis can be studied in an in vitro replication system containing E. coli enzymes. In this system replication of M13 DNA is sensitive to the drug rifampicin, which inhibits host–cell RNA polymerase, but replication of the E. coli cellular DNA is not.
a) What do these results suggest about the priming enzymes involved in replication of M13 DNA and E. coli DNA?
b) What would be the effect of a mutation disrupting the 5´--> 3´ exonuclease activity of DNA pol I on the replication of E. coli DNA?
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Discuss the central dogma of molecular biology in detail and how RNA viruses makes use of this process
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