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Aleks [24]
3 years ago
6

If a tRNA anticodon is CAA, what is its corresponding mRNA codon? In the genetic code, which amino acid does this codon codify

Biology
1 answer:
german3 years ago
3 0
MRNA codon is GUU which is Valine or Val for short<span />
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A person's blood type is determined by the:_______
matrenka [14]

Answer:

) Presence of specific glycoproteins on the cell membrane

Explanation:

When specif glycoproteins(antigens)  or antibody are present on a cell membrane of Red blood cell,they can  be used to identify the blood type.Antigens are substances capable of triggering an immune response in a cells.

In addition,they function in transport of molecules across the RBC. They help in the maintenance of the RBC,and aiding the arrest of cells capable of causing diseases to the body.

Therefore,they are good determinants of blood types,based on this two types of antigens present in a  blood type.

These two antigens  used for classification of blood types are the 1-the ABO antigens 2,the Rhesus antigens.

Essentially,when a WBC produces an antibody ,which is a molecule that defends the body,If this is not compatible,the antibody will recognize it as a foreign body and attack it.Thus such blood types are not compatible. Thus the antibody-antigen reaction are good for knowing and classify blood types.

Antigen can also be glycoprotein,carbohydrate or glycolipids.

Generally blood types are inherited from both parents.Therefore the antigen present on the RBC are combination of the alleles from each parent.

4 0
2 years ago
Leakage of lpg can be deleted by a person from a distance . name the process and write two applications of this process in our d
Nuetrik [128]

Answer:

Explanation:

LPG gas is basically propane and butane, and it is odourless in its natural state. The smell that you notice when there is a leak is actually the stench of an entirely different agent, called Ethyl Mercaptan (C2H6S). This substance is added to the gas when it leaves the main storage terminals.

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1 year ago
The sun is important in the formation of most energy sources on Earth. Select the examples of ways the sun
postnew [5]

Answer:

36. Supposed Mars has (or had) life, which of the following kinds of extremophiles are not expected on Mars? A) Hyperthermophiles B) Xerophiles C) Lithophiles D) Anaerobic extremophiles

37. Which Viking experiment showed initial evidence for still existing life on the Martian surface that has been refuted short time after by most scientists? A) Gas-Exchange Experiment B) Labeled Release Experiment C) Mass Spectrometer Experiment D) Answers A), B), and C)

38. How is the mass and size of Venus in comparison to Earth? A) Larger than those of Earth B) About the same C) Slightly smaller than those of Earth (about 90% to 95% in comparison) D) Much smaller than those of Earth (about 10% in comparison) E) Undetermined

39. When comparing Earth and Venus, which is the main difference regarding the planetary CO2 deposition? A) None B) Regarding Venus CO2 is mostly found in the atmosphere, whereas for Earth it is found in its geochemistry and oceans. C) Regarding Earth CO, is mostly found in the atmosphere, whereas for Venus it is found in its geochemistry and oceans. D) There is virtually no CO2 present on Earth.

40. Although considered to be a super-long shot, where is the best place to search for life on Venus? A) Venus's surface, near its equator B) Venus's surface, close to the poles C) Underground D) High atmosphere

41. In September 2020, which gas has been identified on Venus, which according to the authors) represents possible evidence for life? A) H2O water vapor B) PH, phosphine C) CH4 methane D) NH3 ammonia E) OG ozone

42. Which solar system planet (s) is/are host(s) to Europa and Enceladus? A) Mars B) Jupiter and Saturn, respectively C) Saturn and Jupiter, respectively D) Mars and Jupiter, respectively E) Mars and Saturn, respectively

43. How many moons are hosted by Jupiter and Saturn combined, which (if orbiting the Sun) based on their size would most likely be counted as planets? A) 1 B) 2 C) 3 D) 4 E) 5

44. What is the size of Europa? A) Similar to Earth B) Similar to Mars C) Similar to Earth's Moon D) Much smaller than Earth's Moon

45. What are possible significant sources of energy in Europa? A) Tidal Energy B) Thermal Energy C) Magnetic Energy D) Answers A) and B) E) Answers A), B), and C)

46. Which of the following constitutes observational evidence that Europa might have an under- ground ocean? A) The cracks and rills in Europa's crust B) The magnetic field of Europa C) The number of craters on Europa D) Answers A) and B) E) Answers A), B), and C)

47. Which of the following is not evidence that Europa has an underground ocean? A) The cracks and rills in Europa's crust B) The magnetic field of Europa C) The numbers of craters on Europa D) The size of Europa

48. What and where) is Xanadu? A) Xanadu is a string of craters on Mars B) Xanadu is a set of grooves on Europa C) Xanadu is a "continent" on Titan D) Xanadu is a geological feature near the North pole of Enceladus

49. What is the type of "dynamic interaction" between Europa, Io, and Ganymede? A) Constant force of gravity B) Dynamic resonances C) Tidal interaction D) Answers A), B), and C) E) Answers B) and C)

50. Assumed that the most optimistic scenario occurred with life existing on Europa, how does the expected biomass compare to that of Earth? A) It is expected to be much larger B) It is expected to be somewhat larger C) It is expected to be similar to that of Earth D) It is expected to be much smaller

51. What is the most decisive characteristic of Titan? A) A large, moon-wide ocean B) Ongoing volcanism C) A thick, hazy atmosphere D) Being a strong source of UV and X-ray radiation E) Answers B) and C)

52. What is the dominant constituent of the Titan atmosphere? A) NH3 B) N2 C) CH4 D) 02 E) CO2

53. Where can we find the lake Ontario Lacus? A) On Titan (southern hemisphere) B) On Mars (near Mars's equator, although currently (mostly] dry) C) On Europa (south-eastern region) D) On Io (typically filled with hot magma, due to ongoing volcanic eruptions)

54. What is an important feature in the atmosphere of Titan? A) Strong magnetic fields B) Probable existence of liquids (rain) C) C-H chemistry, including other elements such as N and O D) Answers B) and C) E) Answers A), B), and C)The sun is important in the formation of most energy sources on Earth. Select the examples of ways the sun

provides energy to the Earth.

A. Energy in Fossil Fuels

B. Energy in Food

C. Plants Making Sugar

D. Weather on Earth

E. Warm Temperature of Earth

4 0
3 years ago
An analysis of chromosomes in a culture containing mutated cells may show the loss of one or more bases making up the chromosome
ankoles [38]

The answer is; deletion mutation


This type of mutation mostly causes a phenomenon called frameshift mutation whereby the 3-codon sequence reading frame is shifted causing the amino acids translated, downstream of the deletion site, to be altered. This can gravely affect the function of the translated proteins and result in genetic disease.


8 0
3 years ago
What is an example of prokaryotes?
oksano4ka [1.4K]

Answer: Examples of prokaryotes are bacteria and archaea.

Explanation:

3 0
2 years ago
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