Answer:
This question lacks options, options are: A) DNA replication is semiconservative. B) DNA replication is conservative. C) RNA synthesis is conservative. D) DNA replication is not conservative. The correct answer is A.
Explanation:
Watson and Crick proposed the semi-conservative hypothesis (later demonstrated by Meselson and Stahl in 1957), according to which new DNA molecules formed from an old one have an old and a new strand. This replication model assumed that the double helix DNA separates its two strands and each one serves as a template to synthesize a new strand following the complementary rules of nitrogenous bases. This model was called Semiconservative, since the two newly synthesized double helices have an old strand (an old half) and a new strand (a new half).
In response to a notification of a <u>decrease</u> in blood pH by the nervous system, the brain sends signals to the external intercostal muscles and the diaphragm.
<h3>What is
blood pH?</h3>
Blood pH can be defined as a measure of the molar concentration of hydrogen ions that are present in the blood of a living organism, with respect to its acidity, neutrality or alkanlity (basicity).
In response to a notification of a <u>decrease</u> in blood pH by the nervous system, the brain would send signals (impulses) to the external intercostal muscles and the diaphragm through its respiratory center, so as to help the living organism increase its breathing rate and the volume of its lungs during inhalation.
Read more on blood pH here: brainly.com/question/11209525
Answer:
1.An example of Batesian mimicry is when the yummy viceroy butterfly mimics the orange and black coloration of the distasteful monarch butterfly. ... Wasmannian mimicry occurs when the mimic resembles it's host (the model) in order to live within the same nest or structure. For example, several beetles closely resemble ants
2.Orange and black Monarchs (Danaus plexippus) are among the most familiar and easily recognizable butterflies found in the vivarium. Bright colors and distinctive wing patterns can be an example of aposematism, also known as a warning coloration.
Explanation:
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Angiosperms are commonly referred to as flowering plants, which have the highest division in Kingdom Plantae.
<h3>What are the characteristics of the Angiosperms?</h3>
- Angiosperms are flowering plants, which are characterized by the production of colorful flowers and fruits.
- Angiosperms undergo syngenesis, in which the ovary is converted to fruit and the ovule is converted into the seeds.
- Angiosperms are highly developed and vascular plants, which consist of xylem, phloem, and other specialized tissues.
- The angiosperms have developed root and stem systems. Stem provides adherence and support, while roots help in the absorption of nutrients from the soil.
Thus, angiosperms have the highest rank of division in the kingdom Plantae and bear several characteristic features like flowers, fruits, and roots.
Learn more about <u>angiosperms </u>here:
brainly.com/question/12939745
Answer:
The correct answer is option 3. a nucleus.
Explanation:
The first genetic material present in the early organisms were RNA which was present in the microscopic organisms back then 3.5 billion years ago which means it is normal to have RNA in such microfossils chemical analysis.
Since, the nucleus was not present in early life forms of prokaryotes like bacteria. so, it is unusual to find nucleus in the fossils of stromatolite rocks.
Thus, option III is the correct answer.
