Answer: Option C
Explanation:
Miller and Urey performed an experiment, using some inorganic molecules such as water, methane, carbon dioxide and hydrogen in laboratories conditions similar to early earth conditions .
Amino acids molecules formed as the result of this experiment, this proved that small organic molecules such as amino acids are formed from inorganic molecules.
Hence, the correct answer is option C
Answer: c
Explanation:
Water enters the atmosphere through a process called evaporation. Evaporation occurs when liquid water, such as that in oceans, lakes, rivers, or even moist soil, absorbs energy from the sun and transforms into water vapor, which is a gaseous state.
The energy from the sun breaks the bonds between water molecules, allowing them to escape into the air as vapor. Once in the atmosphere, water vapor can rise and form clouds through a process called condensation, where water vapor cools and condenses back into tiny water droplets or ice crystals.
Eventually, these water droplets may coalesce and fall back to the Earth's surface as precipitation, such as rain or snow. This continuous cycle of evaporation, condensation, and precipitation is known as the water cycle, and it plays a crucial role in redistributing water across the planet.
To know more about evaporation:
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Answer:
9/16
Explanation:
This is a typical dihybrid cross involving two genes; one coding for anridia (form of blindness) and the other for Migraine headache, both in humans. The allele for possessing anridia (A) is dominant over the allele for not possessing it (a) in the first gene, while the allele for having Migraine headache (M) is dominant over the allele for not having it (m) in the second gene.
A cross between a man that is heterozygous for both genes (AaMm) and a woman also heterozygous for the two genes (AaMm), this means that both parents are dominant for the two traits i.e. they both possess anridia and migraine headache.
Both parent cells will undergo meiosis to produce four possible combination of gametes in which the alleles are independent of one another in the gametes, according to Mendel's law of independent assortment. The gametes are: AM, Am, aM, am
These gametes are crossed using a punnet square (see attached image) to produce 16 possible offsprings in a phenotypic ratio of 9:3:3:1.
9- Offsprings with both anridia and migraine
3- Offsprings with only anridia but without migraine
3- Offsprings with only migraine but without anridia
1- Offsprings without both anridia and migraine
According to the question, the chance of an offspring expressing both traits i.e. having both anridia and migraine headache is 9/16
b. involves much less DNA.
c. can start in many different places on a sequence at the same time.
d. starts from a single point.
B. 40 years old
C. 60 years old
D. 80 years old
Its not C. 60 years old, because I chose it and got the answer wrong. The correct answer is B. 40 years old.
immunization
viral detection
antibiotic
Answer:
The correct answer would be immunisation.
Immunisation refers to the process of developing immunity against a particular pathogen or disease.
In this process, a vaccine consists of attenuated or heat killed pathogen is administered into a person.
The body produces a primary immune response against the weakened pathogen or antigen. It also develops memory of the pathogen due to which body is able to recognise the pathogen easily if it encounters the same in near future.
It helps the immune system to produce quicker and amplified immune response against the pathogen and our body becomes immune to that particular disease or pathogen.
Thus, immunisation is required before travelling to Africa as yellow fever is very common there.