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gladu [14]
3 years ago
11

What is the brain made out of?

Biology
2 answers:
vodomira [7]3 years ago
8 0
The brain is made of nerve cells and it is a very unique and important organ of the body. It is part of the nervous system.
Butoxors [25]3 years ago
7 0
The brain is made of cells...brain cells that help the brain function
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Microtubules form from dimers of _____ and ______ subunits that polymerize into a ____________blank.
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Given the sequence of dna nucleotide bases TAGTAGTAG give the complementary strand of mRNA produced during transcription
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Complementary mRNA strand would be the following:

AUCAUCAUC.

3 Repeating codons of AUC, on the mRNA strand.
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How is information from the field of embry ology used as evidence for evolution
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Embryology provides evidence for evolution because during their development, many organisms look similar, suggesting that very different organisms may have a common ancestor.
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3 years 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
Which branch of chemistry studies the compositions if substances? the environmental impact of chemicals?
Makovka662 [10]

Answer;

-Analytical chemistry - composition.

Environmental - impact of chemicals

Explanation;

-Analytical chemistry involves the qualitative and quantitative determination of the chemical components of substances. In qualitative analysis all the atoms and molecules present are identified, with particular attention to trace elements. In quantitative analysis the exact weight of each constituent is obtained as well.

Environmental chemistry is the study of the chemical and biochemical phenomena that occur in the environment.It relies heavily on analytical chemistry and includes atmospheric, aquatic, and soil chemistry.

3 0
3 years ago
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