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2 years ago

What was the stimulus in this action?

1 answer:

3 0

Stimulus causes an action or response, like the ringing of your alarm clock if you didn't sleep through it. Stimulus is a word often used in biology — something that causes a reaction in an organ or cell, for example. ... For more than one stimulus, use stimuli, not stimuluses.

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A student isolates, purifies, and combines in a test tube a variety of molecules needed for DNA replication. After adding some D

aivan3 [116]

Answer:

DNA ligase

Explanation:

DNA replication is an enzyme mediated, 3-step process during which the DNA molecule produces a copy of itself. The 3 steps involved are as follows;

initiation
elongation
termination

Initiation involves the unwinding of the double helix structure of the DNA using DNA helicase enzyme

Elongation involves binding of RNA primer to the DNA strands and addition of bases to the primer to elongate the new chains. Bases are added to the leading strand continuously while the lagging strand is replicated in short segments (okazaki segments).

Termination involves the unbinding of RNA primer and substitution of its bases by DNA bases. The Okazaki fragments are then joined together using the DNA ligase enzyme.

The short, numerous segments of DNA observed in the mixture is the Okazaki fragments of the lagging strand. This is due to the absence of the enzyme involved in the joining of these fragments.

Hence, the answer is DNA ligase.

4 0

3 years ago

4. Which of the following statements best describes how the traits of an organism are determined

butalik [34]

Answer Choices:

DNA provides the energy needed for an organism to grow and function

DNA is copied into mRNA, which controls cellular functions

DNA codes for proteins, which allow an organism to grow and function

DNA unzips and each strand codes for a different amino acid

Answer:

DNA codes for proteins, which allow an organism to grow and function

Explanation:

DNA provides the energy needed for an organism to grow and function - this is false. DNA does not provide energy. A molecule called ATP, mostly produced by cellular respiration, provides energy for the cells to grow and function.

DNA is copied into mRNA, which controls cellular functions - this is false. While it is true that DNA is copied into mRNA, mRNA does not directly control cellular functions. Instead, mRNA is translated into proteins.

DNA codes for proteins, which allow an organism to grow and function - this is true, as indicated above, DNA is transcribed to mRNA which is translated into proteins. Proteins carry out essentially all the functions in the cell

DNA unzips and each strand codes for a different amino acid - this is false, DNA is transcribed into mRNA. Each mRNA codon (three bases) codes for a different amino acid

6 0

3 years ago

Linnaeus classified plants according to their ?

KonstantinChe [14]

HI

The answer is : Appearance

I hope that's help !

7 0

3 years ago

Read 2 more answers

Tim

Lana71 [14]

Explanation:

due due to their size they are small and single celled....!!

8 0

3 years ago

The _______________ is composed of all living organisms. The _______________ is composed of all living organisms.

AveGali [126]

The correct answer to this question is "biosphere." The biosphere is composed of all living organisms. It is the global sum of all ecosystems in the Earth where all living things exist. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.

6 0

3 years ago

What was the stimulus in this action? ​

What was the stimulus in this action?