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
Andreyy89
3 years ago
8

A biochemist isolated and purified molecules needed for dna replication. Whne she added some dna, replictation occursd but the d

na molecules were defective. Each consisted of a normal dna strand paired with numerous segments of dna a few hundred nucleotides long. What had she probably left out of the mixture?
Biology
1 answer:
liberstina [14]3 years ago
3 0

Answer:

She left Ligase enzyme out of the mixture.

Explanation:

DNA replication is the process of formation of new molecules of DNA from the existing one. This process occurs in semiconservative way i.e each new strand consist of one newly synthesised strand and one old parent strand that act as template for the formation of new strand. replication on one strand occurs continuously from 5 prime to 3 prime but on other strands it occurs discontinuously from 5 prime to 3 prime because DNA polymerase moves only in one direction from 5 prime to 3 prime. Hence in discontinuous strands gaps remained. These gaps are filled by Ligase enzyme.

Requirements for DNA replication:

DNA replications needs

Primers

DNA Polymerase enzyme

DNA helicase enzyme

Single nucleotide binding protein

dNTPs

and Ligase enzyme.

Correct choice:

She left Ligase enzyme out of the mixture.

You might be interested in
Which of the following statements apply to the variation in human skin color? Select all that apply.
miskamm [114]
Skin color<span> is due primarily to the presence of a pigment called melanin , which is controlled by at least 6 genes. Both light and dark complexioned people have melanin. However, two forms are produced--pheomelanin , which is red to yellow in</span>color<span>, and eumelanin , which is dark brown to black</span>
7 0
3 years ago
In many plants, stomata are found only on the lower surface of the leaf. The most likely explanation for this fact is that
sergejj [24]
D. Plants have adapted to deal with the sun in many different ways, and this is one. The stomata are regulated by guard cells, which are activated by different things depending on the species of plant, and guard cells are supposed to keep the stomata from staying open all the time and losing too much water to evaporation. So, the solution is to have the stomata on the bottom of the leaf to prevent direct sunlight contact (and therefore more evaporation), and guard cells to protect the stomata. 
6 0
3 years ago
What are some ways water is used inside and around the home? Check all that apply. boiling pasta for dinner watering the front l
sleet_krkn [62]

The answers that apply are;

  • boiling pasta for dinner
  • watering the front lawn
  • brushing teeth before bed

Around the homestead, water is not used in an industrial scale.

3 0
3 years ago
Read 2 more answers
A nucleus of an atom is made of protons and what
Alisiya [41]

Answer:

It is made up of protons and neutrons

6 0
2 years ago
Read 2 more answers
List two pro and cons of genetic engineering
eimsori [14]
Pros: Might someday cure disease, might someday increase crop yeild, might create things that can be of our use. 

Cons: Genetic engineering could cause food allergies, have bad side affects, it could kill animals over time. 

I hope this helps. 
3 0
3 years ago
Other questions:
  • Describe how adh secretion maintains plasma osmolarity levels during dehydration and water loading
    7·1 answer
  • A patient is 32 years old and complains of chest pain, a burning sensation in the chest, increased salivation, and difficulty sw
    15·1 answer
  • _____ is a condition in which individuals may have relatively normal peripheral vision but are unable to see clearly what is rig
    6·1 answer
  • Based on the diagram below, what type of organism is the crown-of-thorns sea star?
    15·1 answer
  • DNA in the nucleus is found in structures called _____. organelles pores ribosomes chromosomes
    10·2 answers
  • HELP! How do I describe this monosaccharide molecule (like how many protons and neutrons it has and what it can do because I am
    12·1 answer
  • During which process is mRNA synthesized from a DNA template with the aid of RNA polymerase?
    7·2 answers
  • What type of circulatory stay do humans have
    11·2 answers
  • Evolution is any change in the heritable traits within a
    7·2 answers
  • • Describe the layers of the skin and the functions of each layer?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!