BIOLOGY HIGH SCHOOL

Why are functional MRIs useful to doctors?

Answers

Answer 1
Answer: doctors are able to see inside your body without having to cut you open

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A substance that affects the rate of a chemical reaction

Answers

A substance that affects the rate of a chemical reaction is typically referred to as a "catalyst."

A catalyst is a substance that increases the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy. The catalyst itself is not consumed in the reaction and remains unchanged at the end of the reaction, making it available for use in subsequent reactions.

Catalysts work by providing an alternative mechanism for the reaction that has a lower energy barrier, allowing the reaction to occur more rapidly. They facilitate the formation of reaction intermediates and transition states, making it easier for the reactants to transform into products.

Catalysts are widely used in various chemical processes, both in laboratory settings and industrial applications, to speed up reactions, improve efficiency, and reduce the amount of energy needed for a reaction to occur. They play a crucial role in fields like chemistry, biochemistry, and industrial manufacturing, enhancing the production of essential materials and products.

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Complete Question is:

A substance that affects the rate of a chemical reaction is ________.

The combustion of glucose ultimately involves the transfer of electrons to oxygen (O2). In biological systems, this takes place without a large increase in temperature. Which of the following statements about this process in biological systems is true? 1) Coupled oxidation-reduction reactions occur with electrons being passed to intermediate electron carriers. 2) The process involves the transfer of 12 pairs of electrons to oxygen. 3) The transfer of electrons from intermediate electron carriers to molecular oxygen is catalyzed by the electron transport chain. 4) Though the process is a controlled oxidation, some energy is lost.

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3) The transfer of electrons from intermediate electron carriers to molecular oxygen is catalyzed by the

The photosynthetic mechanism of the plants make it possible for them to have and create food in order to survive but as they make this "food" which is glucose, the by-product oxygen is created which hence is beneficial to all life forms of heterotrophs. 

Explain why a food web is a better representation of energy flow in a community than a food chain.

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A food web s better at showing energy flow than a food chain because it shows how much energy goes to which animal not just what eats what.

What is the term for the result when a single chromosome containing one strand of DNA divides itself into two new chromosomes and two identical copies of DNA are created? Select one: a. twin chromosomes b. sister chromatids c. sister chromosomes d. twin chromatidsPLEASE HELP

Answers

Answer:

The correct answer is - option B. sister chromatids.

Explanation:

When a one strand DNA of a chromosome replicates itself into two identical copies of DNA formed, these two identical DNA copies are called as sister chromatids.

Dyad is a pair of sister chromosomes and each sister chromosome have two chromatids. The formation of the sister chromatids takes place in the S phase of interphase which is also called the synthesis phase.

Thus, the correct answer is - option B. sister chromatids.

Answer:

b

Explanation:

took the quiz

Which lists metric units, in order, from smallest to largest?kilogram, hectogram, decagram
decagram, decigram, centigram
milligram, centigram, decigram
decagram, hectogram, milligram

Answers

Answer:

milligrams, centigrams, decigrams, kilograms, decagram,hectogram

Explanation:

Answer:

milligram, centigram, decigram

Explanation:

The science of crop production and improvement is called _____. 8
environmental science
agronomy
vegetative propagation

Answers

The correct answer is  Agronomy!

Agronomy is the science of producing food(crops), and this includes such aspects as the quality of the soil and the genetics of the plants. The reason why people are interested in it is that they want to maximize (improve) their food production!
Other Questions
Before the introduction of the yellow crazy ant to Christmas Island, land crabs ate many plant seedlings on the forest, and the forest floor stayed relatively clear of plants. As the crab population declined, plant seedlings flourished. The forest floor became covered with plants. Which statement best describes what occurred on the forest floor? (Points : 1)Primary succession occurred because the ant was a new species that changed the ecosystem.Secondary succession occurred because the organisms on the forest floor changed.Climax vegetation occurred because the seedlings finally had a chance to grow.Primary succession occurred because more plant life in the ecosystem was healthier.
During DNA replication, which sequence of nucleotides will bond to the sequence ACGTAT?A. UGCAUAB. TCGATAC. UCGUAUD. TGCATA
HELP!Which method would be best to separate a mixture of sugar and water?separation by densityseparation by particle sizefiltrationdistillation
Photosynthesis plays an important role in supplying energy to living things. Considering what the products of photosynthesis are, What is another way in which photosynthesis is vital to life?