BIOLOGY HIGH SCHOOL

Through the use of the Polymerase Chain Reactions (PCR), small amounts of DNAA. can pair with complementary sticky ends of cut segments.


B. can be amplified in volume to result in many copies of the segment.


C. can be cut in specific locations to isolate DNA sequences.


D. can be sorted and mapped.

Answers

Answer 1
Answer:

Answer:

B. can be amplified in volume to result in many copies of the segment.

Explanation:

The purpose of PCR is to amplify small amounts of DNA so that you can get a sample large enough to analyze (or use for some other purpose), especially in a crime scene. A. is referring to restriction enzymes, enzymes that cut at specific locations along DNA strands to create "sticky ends." C. is referring to restriction enzymes once again. D. is simply irrelevant.
Answer 2
Answer:

Through the use of the polymerase chain reactions (PCR), small amounts of DNA can be amplified in volume to result in many copies of the segment. Thus, the correct option is B.

What is Polymerase Chain Reaction?

The polymerase chain reaction is a method widely which is used to rapidly make millions to billions of copies of a specific DNA sample, it also allows the scientists to take a very small sample of DNA and amplify it to a large enough amount to study in detailed study.

Polymerase chain reaction is fundamental to many procedures which are used in genetic testing and research work, including the analysis of ancient samples of DNA and identification of infectious agents as well. In this process, small amounts of DNA can be amplified in volume to result in many copies of the segment.

Therefore, the correct option is B.

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Which of the following statements about biogeochemical cycles is not true?a. Biogeochemical cycles include living and nonliving elements.
b. The rock cycle is a biogeochemical cycle.
c. Biogeochemical cycles are an important part of the Earth system.
d. Carbon, nitrogen, and oxygen cycles are biogeochemical cycles.

Answers

The carbon cycle is definitely an example for a biogeochemical cycle -  The nitrogen and oxygen cycles are biogeochemical cycles too! so the last statement is true.

The biogeochemical cycle includes also for example the movement of water which is nonliving, so a) is also true.
The false statement is b) since the rock cycle does not include any biomatter.

c. Biogeochemical cycles are an important part of the Earth's system.

What is meant by the biogeochemical cycle?

The biogeochemical cycle is any of the herbalpathways via which critical factors of livingmatter are circulated. The time period biogeochemical is a contraction that refers to the attention of the organic, geological, and chemical factors of each cycle. The generalized carbon cycle.

What are the 4 types of biogeochemical cycles?

  • Water Cycle or Hydrologic Cycle
  • Carbon-Cycle
  • Nitrogen Cycle
  • Oxygen Cycle.

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Discuss how fossils provide evidence of change from the earliest life forms to those alive today

Answers

Animals, plants and other lfe forms are seen on other continents by moving or traveling

Answer: Fossils are preserved remains of ancient creatures, some of which represent lineages now extinct, and others from which existing species evolved. Fossils indicate evolution occurred as they indicate variations in bone structures of related animal species, and in plant forms and structures.

When a food handler can effectively remove soil from equipment using normal methods, the equipment is considered what?

Answers

When a food handler can effectively remove soil from an equipment by using normal methods, the equipment is considered to be; Corrosion Resistant.

The soil referred to her would be dirt because we are talking about a food handler.

  • Now, if the food handler is finding it difficult to remove dirt from the equipment by using normal/regular methods, it means that the soil/dirt has succeeded in having some kind of chemical reaction with that equipment.

  • If that is the case, then it means the equipment is undergoing corrosion because corrosion is defined as the gradual destruction of a metal by chemical reaction with the environment.

  • Since we have established that inability to use normal method denotes corrosion, then if he can use normal methods to remove the soil effectively, then the equipment is said to be corrosion resistant.

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Final answer:

When soil can be effectively removed from equipment by a food handler, the equipment is deemed sanitized. Sanitization involves cleansing to remove microbes to levels that are safe for public health. It's applicable to fomites, objects that can harbor microbes and facilitate disease transmission.

Explanation:

When a food handler can effectively remove soil from equipment using normal methods, the equipment is considered sanitized. Sanitization refers to the cleansing process used to remove enough microbes to achieve levels deemed safe for public health. This is especially crucial in the food service industry, where items like dishes are cleaned with hot water and air, killing most microbes. It's also applied to inanimate items, known as fomites, which can harbor microbes and aid in disease transmission like door knobs or toys. The level of cleanliness required for a fomite depends on the application for which the item will be used and the level of resistance to antimicrobial treatment by potential pathogens.

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Chemically speaking, enzymes are composed of chains of _________________, and they are considered to be a type of __________________.

Answers

All proteins are composed of amino acids. Each amino acid in a protein is linked by chemical bonds. Enzymes are composed of chains of amino acids. Enzymes are a type proteins that turn a cell into a highly developed miniature factory carrying out chemical reactions very fast.

Final answer:

Enzymes are composed of amino acids and are considered to be a type of protein.

Explanation:

Chemically speaking, enzymes are composed of chains of amino acids, and they are considered to be a type of protein.

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Often, the second part of a scientific name is _________. a description of a trait or habitat the same as for other members of the same genus capitalized if it derives from a proper name different in different locations

Answers

 Species names are binominal which means they consist of two words. The first word is the generic name. The second word has been called "specific name"  The first letter of the first word is capitalized while the first letter of the second word is not capitalized.  The answer here is A. 

Answer: The correct answer for the blank is-

a description of a trait or habitat.

According to the binomial system of classification, living organisms can be named scientifically, using two words. The first word in the scientific name of the organism corresponds to the Genus and the second word/ part is the species to which the organism belongs. The second part that is the species depicts the description of a trait or habitat.

For example- Scientific name for Human beings is Homo sapiens, which shows that they belong to species 'sapiens' that gives description of human beings.

Thus, first option is the right answer.

A cell is a complex system. Like most systems, a cell contains a boundary that separates things that are inside the system from those that are outside of the system. Which part of the cell functions as a system boundary

Answers

The cell membrane of the cell works as a system boundary. It controls what can enter of leave the cell.
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