1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kitty [74]
3 years ago
10

A biochemist isolates and purifies various molecules needed for DNA replication. When she adds some DNA, replication occurs, but

each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture? A biochemist isolates and purifies various molecules needed for DNA replication. When she adds some DNA, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture? Okazaki fragments nucleotides DNA ligase primase DNA polymerase
Biology
2 answers:
galina1969 [7]3 years ago
5 0

Answer:

The correct answer is DNA ligase.

Explanation:

DNA Ligase is an enzyme with links 2 strands of DNA by creating a bond between the phosphate group of 1 strand and deoxyribose group of the other strand of DNA.

In cells, it is used to join the Okazaki fragments together which are formed on the lagging strand during the process of DNA replication.

Okazaki fragments are tiny pieces of DNA nucleotide which are formed in a discontinued manner  but latter they are joined by DNA ligase enzyme.

Anna11 [10]3 years ago
5 0

Answer: DNA ligase

Explanation: During replication, two new strands are synthesized: The leading strand and the lagging strand.

The leading strand is synthesized in a continuous manner while the lagging strand is synthesized discontinuously in short segments called the Okazaki fragments. The leading strand is the strand whose 5'->3' synthesis is in the direction of the fork movement while the lagging strand is the strand whose 5'->3' synthesis is in the direction opposite to the fork movement. The Okazaki fragments are joined by an enzyme known as DNA ligase. DNA ligase is one of the enzymes involved in DNA replication which catalyzes the joining of two or more polynucleotide chains.

You might be interested in
What part of the body uses active transport to take up nutrients after concentration has reached equilibrium
jekas [21]

The villi of the small intestine use active transport to take up nutrients after concentration has reached equilibrium.

<h3>What is Active transport?</h3>

Active transport may be defined as the process that occurs against the concentration gradient and is mediated by carrier proteins. Metabolic energy is used to move ions or molecules against a concentration gradient.

During the process of digestion, the villi in the small intestine enthrall the soluble nutrients gradually. Over time, the concentration of nutrients in the villi acquires an equilibrium with the concentration in the gut. Until here, the nutrient uptake is carried by the process of passive diffusion.

But after attaining the equilibrium, the nutrient uptake is carried by the process of active transport.

The complete question is as follows:

What part of the body uses active transport to take up nutrients after concentration has reached equilibrium?

  • Lungs
  • Stomach
  • Small intestine
  • Liver

Therefore, the correct option for this question is C, i.e. small intestine.

To learn more about Active transport, refer to the link:

brainly.com/question/18434867

#SPJ1

7 0
2 years ago
What do the letters represent? (this is about the chesapeake bay watershed)
Mkey [24]

Answer:

G: new york

F: New york Rivers

D: Rivers

C: susquehanna river

A: Divide

E: estuary

B: tributaries

5 0
3 years ago
Read 2 more answers
Explique de que forma a obstrução dos vasos da planta hospedeira pelos biofilmes de bactérias pode levar à morte progressiva das
musickatia [10]

Answer:

Os biofilmes são uma comunidade complexa de microrganismos, que pode ser composta por uma única espécie ou uma combinação de espécies. Os biofilmes são geralmente formados nas superfícies de materiais não vivos ou nos tecidos de organismos vivos; que pode estar externamente nos tecidos vivos dos organismos ou dentro dos tecidos vivos do organismo. Quando os microrganismos formam um biofilme, aumentam suas chances de resistir a anticorpos produzidos pelo organismo e aumentam suas chances de colonização completa do organismo. Algumas doenças são caracterizadas pela presença de biofilmes, que são, na maioria dos casos, a causa da doença.

<em>No caso de obstrução de vasos de plantas hospedeiras por biofilmes bacterianos; os biofilmes se formam na superfície do vaso e aumentam gradualmente de tamanho até que haja uma obstrução completa do vaso da planta. Quando o vaso da planta é eventualmente obstruído, o fluxo de materiais e minerais necessários é obstruído; levando à obstrução das células da raiz de receber materiais vitais e minerais necessários para o crescimento, isso eventualmente leva à morte progressiva das células da raiz.</em>

5 0
3 years ago
The secondary structure of proteins results because of _____ bonding between molecules in the protein molecules' backbone.
topjm [15]

Answer:

Hydrogen bonding

Explanation:

The newly synthesised proteins as a result of the process of translation are linear structures formed by linear arrangement of amino acids.

The linear structure of a protein is known as the primary structure which changes its conformation and take the shape of either the helix or the pleated sheet. This helical or pleated sheet structure is known as a secondary structure.

The secondary structure is formed due to the bond formed between the hydrogen of the carbonyl group and the amino group which form the backbone of the protein structure. The hydrogen bond causes the linear polypeptide to form spiral helical or bend pleated sheet.

Thus, Hydrogen bonding is the correct answer.

6 0
3 years ago
I need help on those two questions
Romashka [77]
6-C (breaks off)
7-C(they secrete acid that breaks away rocks)
4 0
3 years ago
Other questions:
  • How does incomplete dominance differ from a dominant recessive pair of alleles?
    8·1 answer
  • Cartilage ground substance includes chondroitin and hyaluronic acid. <br> True or false
    14·1 answer
  • The lower atmosphere is mostly warmed by radiated heat from Earth's surface. However, water heats up and cools down more slowly
    5·1 answer
  • Which of the following is one factor in the type of eruption that occurs?
    13·1 answer
  • Como sabes que ADN tiene información genética
    15·1 answer
  • What impact does the atmosphere have on Earth’s cycles
    9·1 answer
  • 17. What are some of the major causes of extinction today?
    9·2 answers
  • Can virus show response against heat, chemical and temperature?If yes then how?​
    8·1 answer
  • Which of the following is correct?
    13·2 answers
  • Select all the correct answers. looking at the phylogenetic tree, which three statements can you make about the interconnectedne
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!