BIOLOGY HIGH SCHOOL

What is reproduction

Answers

Answer 1
Answer: reproduction is a process in which organisms are generated or replicate themselves

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In the cell cycle, cytokinesis occurs at the end of
Which of the following statements is true?A. Fossils are frequently found in metamorphic rock.B. Igneous rocks form from the cooling and crystallization of magma.C. Extrusive igneous rocks, found in the Earth's lithosphere, are not subject to weathering.D. Sedimentary rocks are formed as a direct result of chemical weathering.
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During which process is mRNA converted into a sequence of amino acids for protein production?
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What is the purpose of using a pedigree?

Answers

careful analysis of the pedigree can determine if a trait has a powerful or  heritable characteristics controlled by genes.

Answer:

to understand patterns of inheritance in organisms

Explanation:

Edge

According to Freud's psychoanalytic theory, rationality as well as logical thinking and reasoning are controlled by our ______.a. pleasure principle
b. superego
d. id
e. ego
f. preconscious

Answers

According to Freud's psychoanalytic theory, rationality as well as logical thinking and reasoning are controlled by our a. pleasure principle because it can instinctively lead us to satisfy our basic needs which form logical sequence.

Polymerization and the break down of a polymer are two opposite reactions. What role does a water molecule play in both of them?

Answers

A polymer is a large molecule made up of smaller molecules called monomers. The process of monomers joining each other to create a polymer is called polymerization. Water plays a role in condensation polymerization. In this reaction a hydrogen from one monomer will connect with the hydroxyl functional group of another monomer. The two join and water is formed. the water breaks off, leaving the remaining functional groups of the  monomers able to be joined together.
Hydrolysis is the opposite reaction where water is added to the polymer. The hydrogen (H) and hydroxide (-OH) react with the functional groups that formed the bond and as a result break apart the polymer.

What happens during transcription?a. The transcription process stops.
b. RNA polymerase is guided to the correct place.
c. mRNA is produced from the DNA.
d. DNA is produced from the mRNA.

Answers

c. mRNA is produced from DNA

Transcription happens before translation. :)

Final answer:

During transcription, mRNA is produced from the DNA. It involves the enzyme RNA polymerase and requires specific protein factors and DNA promoters.

Explanation:

During transcription, mRNA is produced from the DNA. It is the first step in gene expression and takes place in the cell nucleus. The enzyme RNA polymerase is responsible for transcribing the DNA sequence into an RNA molecule, which will later be used to produce proteins. It requires specific protein factors to initiate the process and DNA sequences called promoters to guide the RNA polymerase to the correct place.

Learn more about Transcription here:

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Why has groundwater use increased?a.the total amount of freshwater has decreased
b.more of the available freshwater is stored in glaciers and icecaps
c.governments have banned the use of freshwater in rivers and springs
d.the demand for freshwater has increased due to population growth

Answers

Groundwater use has increased because D. the demand for freshwater has increased due to population growth. Obviously, the more people there are, the more water is going to be used, because all people in the world need water in order to survive. So they need to find ways to obtain more water, which is where groundwater comes into play.

Answer:

D

Explanation:

The nutritional information on a cereal box shows that one serving of a dry cereal has 200 kilocalories. If a person were to ignite one serving of the cereal in a bowl, the amount of heat given off would be sufficient to raise the temperature of 20 kg of water how many degrees Celsius

Answers

Answer:

10°C.

Explanation:

Heat released in any system can be calculated as follows:

Heat released = m c DT

Here, m is the mass , c is the specific heat and DT is the change in temperature.

Heat released = 200 kcalories = 200,000 calories

The mass of water = 20 kg = 20000 g

The specific heat of water = 1 cal / g degree

The rise in the temperature is as follows:

heat released = m c DT

200,000 = 20,000 ( 1) (DT)

DT = 10°C.

Thus, the answer is 10°C.
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