BIOLOGY HIGH SCHOOL

What does it mean when we say the dna replication is semiconservative

Answers

Answer 1
Answer: Semiconservative replication would produce two copies that each contained one of the original strands and one new strand. Conservative replication would leave the two original template DNA strands together in a double helix and would produce a copy composed of two new strands containing all of the new DNA base pairs.

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MIDDLE SCHOOL

Which structure forms as DNA unwinds? A. a special marker B. a complementary base C. a replication bubble D. a double helix

Answers

A replication bubble forms as the DNA unwinds.

Option C  

Explanation:  

Replication bubble is the space where the strands of double helical DNA structure are separated with the help of DNA helicase. The strands of the double helical DNA are still in the helix form on the both end of the unwinded DNA stand which gives this region an appearance of a bubble.

DNA unwinding is the first step in replication or transcription of the DNA molecule. DNA helicase separates the two types of "DNA" that are connected by hydrogen bonds with the help of ATP hydrolysis.  

Answer:

a replication bubble

Explanation:

gradpoint

COLLEGE

A mutation in human ATPase 6, which corresponds to E. coli subunit a, from leucine to arginine at position 156 may allow the movement of protons across the membrane, but not the rotation of the ring of c subunits.

Answers

Answer:

There would be the uncoupling of proton translocation and ATP synthesis.

There would be no net effect on the overall function of ATP synthase.

ATP hydrolysis coupled to proton transport out of the matrix would increase.

ATP synthase would remain sensitive to F0 proton conduction inhibitors.

Proton binding to sub-unit c would be impaired.

The c sub-units would not fold correctly.

Explanation:

  • There would be the uncoupling of proton translocation and ATP synthesis.
  • There would be no net effect on the overall function of ATP synthase.
  • ATP hydrolysis coupled to proton transport out of the matrix would increase.
  • ATP synthase would remain sensitive to F0 proton conduction inhibitors.
  • Proton binding to sub-unit c would be impaired.
  • The c sub-units would not fold correctly.
HIGH SCHOOL

The lytic cycle of bacteriophage infection ends with the _____. a. replication of viral DNA.
b. entry of the phage protein coat into the host cell.
c. assembly of viral particles into phages.
d. the injection of phage DNA into a bacterium.
e. rupture of the bacterium.

Answers

Answer:

The correct answer is- e. rupture of the bacterium.

Explanation:

There are two cycles in viral reproduction that is lysogenic and lytic cycle. In the lysogenic cycle, the bacterial genetic material gets incorporated in the bacterial genome and replicates its genome with the host genome.

In the lytic cycle, the genetic material of virus transcribes and produces capsid proteins by using host molecular machinery. Then the capsid protein joins around the viral genetic material and new phage particles are produced.

The lytic cycle ends when these new phage particles released out of the cell by rupturing the cell membrane and cell wall of bacteria. Then these new phages infect new cells.

MIDDLE SCHOOL

____ digest and recycle the cells used components by breaking down proteins, nucleic acids, lipids, and carbohydrates a) vesicles
b)ribosomes
c) lysosomes
d) endoplasmic reticula

Answers

Answer:

The best answer for this question is "C. Lysosomes."

Explanation:

Because it's known for breaking down food molecules (like proteins, nucleic acids, and etc..). Lysosomes meld with vacuoles to digest their substance.

Glad to help ya!! :)

COLLEGE

Which of the following best explains why marine debris is not caused solely by countries bordering the ocean? a.
Marine debris mostly originates from oceangoing ships.
b.
Debris is carried to the ocean by winds, rivers, and storms.
c.
Marine debris originates from natural sources.
d.
None of the above

Answers

The correct option is (b) Debris is carried to the ocean by winds, rivers, and storms.  Marine debris is considered anything that does not belongs to ocean. Example plastics, abandoned fish gear, wooden material.Marine debris are carried to oceans by winds, rivers, and storms. Even though the marine debris enters the ocean in one place it, does not means that it is solely caused by the countries bordering it. The wind, gyres and some oceanic features determines the movement of marine debris. It is constantly moved and mixed by wave actions and spread into the ocean.




Your answer would be B
hope it helps

HIGH SCHOOL

What are the three major wind systems?

Answers



its polar easterlies, prevailing westerlies, tropical eastern lies
Polar easterlies
prevailing westerlies
tropical easterlies
hope this helps
MIDDLE SCHOOL

Why does the Moon appear to move from East to West in the night sky?

Answers

Because the Earth is rotating from West to East. So it seems like it is going the opposite. Also depending on where you live. I believe that's why.
MIDDLE SCHOOL

How does an enzyme influence a biological reaction

Answers

Answer:

It increases the net energy difference between reactants and products.

Explanation:

I took the test.

Enzyme work as catalysts and speed up the rate of biological reactions.
HIGH SCHOOL

Which way do the nitrogenous bases in DNA pair up? A. A and G; T and C B. A and C; T and G C. A and T; G and C D. A and A; T and T; G and G; C and C

Answers

The correct answer would be C. Because Adenine pairs with Thymine and Cytosine pairs up with Guanine
The answer is CCCCCCCCCCC
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