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3 years ago

Which of the following is true of the Antarctic Treaty System?

1 answer:

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Antarctic Treaty, Antarctica is the only continent without a native population is an agreement regulating the international situation. Signed in 1959, began to be implemented in 1961. Has been approved so far been signed by 50 countries.
Treaty of Antarctica can be used freely for scientific study and indicates the military can not be used for any purpose.

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Which hypothesis helps to explain why all organisms share the same genetic code?

KonstantinChe [14]

Answer:

There are two possible answers: Deep-sea vents provided the energy needed for the first organic compounds to form OR self-replicating RNA molecules passed on genetic information.

Explanation:

The reason for the first answer is due to the hypothesis that indicates that life (organic molecules) arose from inorganic molecules synthesized from the amino acids in those energy vents. This is called the metabolism first hypothesis. The Miller-Urey Experiment provided evidence that organisms could rise from inorganic molecules (they simulated under the conditions you would see on early Earth). The second hypothesis is the RNA World hypothesis (second answer) which suggests that the formation of RNA that could replicate (possible due to mutation or evolution), led to life that could preserve its genetic integrity through replication (greater stability to the organism) and create lipid bi-layer membranes/other organelles. Some scientists support the Metabolism First Hypothesis, while others are skeptical (this goes for the RNA World Hypothesis as well). However, the RNA World Hypothesis is for more reasonable in the fact that its main point is the fact that RNA molecules were able to replicate and maintain genetic stability despite early Earth conditions. Although either hypothesis could explain why all organisms share the same genetic code, the RNA World Hypothesis better explains the universality of DNA/RNA of genes that we see today.

5 0

3 years ago

Read 2 more answers

What skills and knowledge do you hope to gain from your proposed study programme?

Dennis_Churaev [7]

Answer:

As my study programme is concerned with the field of biotechnology, I hope that by the end of the proposed study programme, I will be able to gain knowledge about the molecular tools and the concepts and trends in genome editing. I shall be able to perform techniques such as PCR, gel electrophoresis, cell culturing easily. I would be able to grasp better knowledge in the fields of plant biotechnology, animal biotechnology, Industrial biotechnology and marine biotechnology.

4 0

4 years ago

A wild-type tomato plant (Plant 1) is homozygous dominant for three traits: solid leaves (MM), normal height (DD), and smooth sk

Brut [27]

Answer: In this type of cross between MmDdPp and mmddpp, the phenotypic ratios in the eight possible phenotypes are as follow; a. solid, normal, smooth = 1:8

b. solid, normal, peach = 1:8

c. solid, dwarf, smooth = 1:8

d. solid, dwarf, peach = 1:8

e. mottled, normal, smooth = 1:8

f. mottled, normal, peach = 1:8

g. mottled, dwarf, smooth = 1:8

h. mottled, dwarf, peach = 1:8

Explanation: The number of gametes that can be formed from a particular genotype is given as 2^n where n is the number of heterozygous loci. In the genotype MmDdPp, n = 3. Therefore, 8 gametes can be formed.

In genotype mmddpp, n = 0. Therefore, only one type of gamete can be formed.

Crossing the two genotype (MmDdPp and mmddpp) as shown in the attached image, 8 possible offsprings can be achieved. Phenotypes of these offspring had been stated earlier. The phenotypic frequency of each of these offspring is one out of eight (⅛).

7 0

3 years ago

Oxygen is a product of the electron transport chain. True or False

scoundrel [369]

Answer:

true

hope this helps you ☺️☺️

3 0

3 years ago

People continue to have strong opinions triggering ongoing debates about stem cell research. Organize the points as either the p

JulsSmile [24]

Answer:

Pro:

May hold answers to cure various diseases including Alzheimer's and Parkinson's - these may be answers to various diseases that are not able to cure.

Requires a small number of cells because of the fast replication rate - these are able to produce a high amount of cells in the lab as they are able to replicate faster.

Medical benefits such as regenerating organ tissue and therapeutic cell cloning

cons:

ethical controversy over use of stem cells from lab fertilized human egg - there is an ethical controversy around the use of lab fertilized human egg

unproven treatments often come with high rejection rates - these researches provide uncertain results and not tested and easily affected so the rate of rejection is high

The cost can be prohibited for many patients - these require high cost and can not be in the budget of every patient.

8 0

3 years ago

Read 2 more answers