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Bumek [7]
3 years ago
15

Why do you think almost a century passed between the development of the first vaccine (for smallpox) and the development of the

next vaccine (for cholera)?
Biology
1 answer:
Oksanka [162]3 years ago
3 0

Answer:

Vaccines take a long time to develop and make.

Explanation:

The cure (vaccines) to problems like smallpox take a while to develop as scientists and doctors need to make it correctly and test it correctly to see if it is a cure or not. It takes years before these things can be distributed and/or even verified for "it works!" Due to this, it may of took a century for development, planning, making, testing, getting approved and mass distributing.

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Describe the role that wind plays on surface currents.
vovikov84 [41]

Answer:

Wind, an indirect form of solar energy, moves the surface currents while the surface currents itself also rotate in circular patterns due to the earth's rotational force.  They are both part of the Coriolis effect.

Explanation:

3 0
4 years ago
If a man weighs 190 lb and eats 150 g protein per day, his protein intake is _____ of the recommended dietary allowance (rda)
-BARSIC- [3]

The RDA for protein is 0.8 g per kilogram of body weight. This man's weight is 190 lb, or 86 kg; 86 kg × 0.8 = 69.1 g protein per day. Thus, an intake of 150 g is more than twice his RDA of 69.1 g of protein per day.

Recommended Dietary Allowance (RDA) of protein for adults is 0.8 g per kilogram of body weight. To determine your RDA for protein, multiply your weight in pounds by 0.36.The protein RDA for adults is 0.8 grams per kilogram of healthy body weight per day.

Proteins build muscle mass and contour, facilitate hair, nails and bone growth, regulate energy levels, and support chemical processes within the body which include enzyme, hormone and antibody production.

To learn more about Recommended Dietary Allowance ,here

brainly.com/question/11824881

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6 0
2 years ago
Which of the following best describes the influence of latitude on climate? A. Earth's climate zones are produced by the equal d
mixas84 [53]
D. Polar regions receive less solar energy and heat per unit area than tropical regions 

Less direct sunlight means that there is less concentration of direct solar rays. This would influence temperature and would ultimately create weather, and since this pattern continues of switching direct ray latitudes, this would create climate zones all over the Earth, and similar ones with similar latitude and terrain.
7 0
3 years ago
Read 2 more answers
What are the functions of the three major forms of RNA (ribosomal RNA, messenger RNA, and transfer RNA)?
vovangra [49]

Answer:

Ribosomal RNA: Structural part of ribosomes

Messenger RNA: Carry genetic information from DNA to proteins

Transfer RNA (tRNA): Transport amino acids to protein synthesizing complex.

Explanation:

Ribosomes are made up of ribosomal RNA (rRNA) and proteins. The catalytic activity for the formation of peptide bonds between amino acids during protein synthesis resides the RNA of ribosomes.  

Messenger RNA (mRNA) is formed by the process of transcription during which the nucleotide sequence of the template DNA strand is copied into that of the RNA. The mRNA serves as a template for protein synthesis. The nucleotide sequence of mRNA is read in the form of genetic codes to specify the amino acid sequence of a protein. In this way, the genetic information stored in DNA is carried to the proteins.

During the process of protein synthesis, tRNAs carry amino acids to the mRNA-ribosome complex so that the amino acids are incorporated into the polypeptide. For the purpose, there is a tRNA with a specific anticodon sequence for a particular amino acid.  

3 0
3 years ago
Throughout the year, areas of the Earth's surface are either tilted away from the Sun or toward the Sun. This is a result of the
Ganezh [65]
Im pretty sure the answer is C
7 0
3 years ago
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