The reason that there are Okazaki fragments during DNA replication is ultimately because:A) Some parts of the chromosome are made of RNA and different polymerases have to be used
B) Polymerases can only synthesize in the 5' to 3' direction
C) There are only enough dNTP's to support quick replication on one strand, so the other strand lags behind it
D) It is necessary to "slow down" one of the strands so that replication does not occur before cells have a chance to grow

Answers

Answer 1

Answer:

Answer:

B) Polymerases can only synthesize in the 5' to 3' direction

Explanation:

The leading strand's directionality is 3' to 5', so polymerase has no problem with replicating this one. But the lagging strand has the opposite directionality, so the polymerase must work in the opposite direction of the replication fork.In consequence, the replication process undergoes periodic breaks, and the enzymes have to stop and start again while helicase separates both strands, resulting in the polymerization of okazaki fragments.

Related Questions

Answer to get brainliest tell me your spective about climate change
Which of the following can be a stimulus for contraction in all three muscle tissue types? A) epinephrine B) thyroid hormone C) testosterone D) parathyroid hormone E) acetylcholine
A pharmaceutical company wanted to test a new drug developed to lessen the effects of the common cold. To test this drug, scientists tested 50 volunteers, each of whom was suffering the effects of a cold. Twenty five of the people were given the drug, while the other 25 were given a placebo, a sugar pill. None of the participants knew who was taking which pill. All participants received a pill at 8:00 am daily for the first three days of the study. All participants lived in the same environment, with the same climate, eating the same diet, and having the same level of activity. The severity of the cold, hence the effectiveness of the pill, was determined by the number of tissues each person used within 24 hours. At the end of a seven day period, it was concluded that those with the sugar pill had their symptoms disappear as well as those who had taken the new wonder drug. The executive committee decided to produce the drug anyway thinking that the public would do anything to relieve the symptoms of a cold. Type of Variable Description Dependent Variable that the researchers actually measurers, counts or observes. It is what the researcher thinks will change in response to the experimental treatment. Independent Variable that is intentionally changed by the researcher. Standardized or Controlled These variables are held constant between each group to help prevent these factors from influencing the dependent variable. Table Source: CA Surmacz (2004) Inquiring Minds Want to know: Introducing Freshmen to Experimental Design. In Tested studies for laboratory teaching. MA O'Donnell, Ed. Vol 25 Mini Workshops. Assoc. Biology Laboratory Education pp. 316-327. 1) State the research question the study aimed to address 2) What is the hypothesis? 3) Identify the independent variable versus the dependent variable. 4) What variables were held constant in this study? 5) What was the control group? 6) What data was collected during the study? 7) What this data qualitative or quantitative? 8) What was the study's conclusion?
Describe the process of pollination and fertilization in flowering plants? Please
What is defferenciated cell and and undeferenciated cell.with example

In pea plants purple flowers are dominant to white flowers. If two white flowered plants are cross, what percentage of their
offspring will be white flowered?

Answers

Answer:

100%

Explanation:

This question involves a single gene coding for flower color in pea plants. The allele for purple flowers (P) are dominant to white flowers (p). This means that purple color will be expressed in a heterozygous state.

According to this question, If two white flowered plants are cross i.e. pp × pp, the following gametes will be produced by each of the parent: p and p. Using these gametes in a punnet square (see attached image), ALL (100%) of the offsprings will be white colored (pp).

Therefore, 100% of the offsprings will be white flowered.

Why must science be open to change?)
A)
Theories are always said to be the absolute truth.
B)
New theories are always better than old theories.
9
Theories can never be said to be the absolute truth.
D)
Old theories must be thrown out with new scientific évidence.

Answers

Answer:

The answer is C.

Explanation:

Answer:

I got it right; Its C

Explanation:

In USA Test prep

The inside of red blood cells is 300 mosm. what will happen to your red blood cells if you become dehydrated and your blood osmolarity increases to 350 mosm?

Answers

The right answer is going to move the blood cells and the cells will shrink.

Osmotic plasmolysis is a contraction of the cytoplasm of a cell by vacuolar water exit. This occurs during the exerting of osmotic pressure to the outside, exosmosis when the cell is immersed in a hypertonic solution. Plasmolysis leads, of course, to cell death.

Plasmolysis is thus the process by which cells lose water in a hypertonic solution.

The dehydration can cause the loss of water from the blood plasma. As the loss of water occurs, the osmolarity of the plasma is increased. Due to the increase in the osmolarity of the plasma, the blood cell would become hypotonic with respect to plasma.

This would result in loss of water molecules from the blood cells. So, the red blood cell would lose water molecules and will shrink.

) You treat some cells with a proteolytic enzyme that is too large to penetrate the cell membrane (Set 1). Another group of cells is made permeable before treatment with the enzyme (Set 2). A third set of cells was not treated with the enzyme at all (controls). Proteins are then extracted from the three different sets of cells and applied to an SDS-PAGE gel. Protein W migrates to the same distance on a gel of proteins from Set 1 and Set 2; Protein W migrates a shorter distance on gels of proteins extracted from the control group than on gels of proteins extracted from Set 1 and Set 2 treated cells. Protein X migrates to the same distance on a gel of proteins from control cells and the gels of the proteins from Set 1 and Set 2. Protein Y migrates a longer distance when extracted from Set 1 cells than does protein Y in the controls; Protein Y moves an even larger distance in the gel of the extracts from Set 2. Protein Z migrates the same distance on gels of proteins from the controls and the proteins extracted from Set 1, but it migrates a longer distance in extracts from Set 2 cells. Which protein is exposed only on the exterior of the cell?

Answers

Answer:

Proten W

Explanation:

SDS-PAGE gel is a method used for the separation of proteins in which proteins are separated based on their length (smaller proteins move faster through the gel, due to less resistance).

When treated with proteolytic enzymes, proteins are cut and become short fragment. This means that the fragments formed after the use of proteolytic enzymes, will move faster and thus, migrate a longer distance. Proteolytic enzymes in Set 2 cells will act only on plasma membrane proteins (because they cannot penetrate), while in Set 2 they will act on both, plasma membrane and interior proteins. Control group will have only the large fragments (not treated with enzyme).

Protein W travels the same distance on a gel of proteins from Set 1 and Set 2, but different than control group. It means that the proteolytic enzyme worked the same on Set 1 and Set 2.

A genetics researcher finds that a form of human albinism in a certain population is controlled by the recessive allele, a, for the absence of skin pigment and the completely dominant allele, A, for presence of skin pigment. If the recessive allele occurs in 30% of this population, what percent of the population has skin pigment but also carries the recessive allele?21 percent
42 percent
91 percent
51 percent

Answers

Answer:

Option A

Percent of the population that has skin pigment but also carries the recessive allele is $21\n$ percent

Explanation:

As per hardy-weinberg equation,

$p^2+q^2+2pq = 1\n$ ------------- Eq(A)

where

$p^2= \n$ frequency of the homozygous genotype (dominant)

$q^2= \n$ frequency of the homozygous genotype (recessive)

$pq= \n$ frequency of the heterozygous genotype (recessive)

Also, sum of the allele frequencies at the locus is equal to one.

Thus, $p + q = 1\n$ ------------- Eq(B)

Here frequency of recessive allele i.e $q = 30\n$ %

Substituting this in equation B, we get

$p + 0.3 = 1\np = 1-0.3\np= 0.7\n$

frequency of dominant allele i.e $q = 70\n$ %

Substituting the value of frequency of both dominant and recessive allele in equation A, we get

$(0.3^2) + (0.7^2) + 2pq = 1\npq = (1-0.3^2-0.7^2)/(2) \npq = (0.42)/(2) \npq = 0.21\n$

Thus, percent of the population that has skin pigment but also carries the recessive allele is $21\n$ percent

The correct answer will be 42%

1. Which of the following best explains how Earth’s atmosphere protects life on the planet?It becomes less dense at higher altitudes.

It consists of different layers of different thicknesses.

It allows visible light to pass through completely.

It contains gases that filter out ultraviolet radiation.

2. Matthew has recently learned that Earth’s atmosphere is made up of nitrogen, oxygen, water vapor, and many other trace elements. Which of the following is NOT a way in which gases in the atmosphere are helpful to life on Earth?

Carbon dioxide insulates Earth

Protection against radiation from the Sun

Barrier against violent storms and lightning

Oxygen stays within the atmosphere

3. Which of the following is a way the atmosphere helps maintain life on Earth?

The atmosphere helps maintain a moderate temperature.

The atmosphere draws water vapor from outer space.

The atmosphere has air currents that rotate the planet.

The atmosphere contains some gases that are toxic.

keep her skin protected. She wonders what else the atmosphere does that she takes for granted each day. The atmosphere allows which of the following to happen?

Meteorites to hit Earth’s surface

Chloroplasts producing oxygen

Reflection from the ocean's surface

Precipitation and the water cycle

5. Gases in the atmosphere are helpful to life on Earth because they offer protection from which of the following?

Poisonous gases from stars

Harmful radiation from the Sun

Collisions with other planets

Violent storms and lightning

6. Without the atmosphere, life on Earth would not be possible. Which of the following is NOT an explanation for how Earth’s atmosphere protects life on the planet?

It allows visible light to pass through completely.

It contains gases that filter out ultraviolet radiation.

It keeps Earth warm by trapping in heat.

It protects life from ultraviolet rays of light.

7. Alexander applies sunscreen to help provide protection from ultraviolet radiation. With what does the atmosphere provide protection for Earth?

Thick layers of ice clouds

Ozone in the upper atmosphere

Water vapor in the lower atmosphere

The reflective surface of the ocean

8. The atmosphere is often referred to as a blanket that covers Earth, keeping out harmful things and protecting life inside. Which of the following best represents a way in which the atmosphere helps maintain life on Earth?

The atmosphere provides air for oxygen.

The atmosphere controls the distance from the Sun.

The atmosphere helps rotate the planet.

The atmosphere provides protection from disease.

9. Which two gases in the atmosphere are essential to life on Earth?

Nitrogen and helium

Carbon dioxide and oxygen

Neon and argon

Helium and hydrogen

10. The atmosphere is made up of four different layers: the thermosphere, mesosphere, stratosphere, and troposphere. Which of the following is NOT true regarding the composition and structure of the the atmosphere?

The structure maintains safety against harmful UV rays.

The composition allows necessary gases for life on Earth.

The atmosphere allows Earth to rotate around the Sun.

The atmosphere is made up of nitrogen, oxygen, and a variety of gases.

Answers

Earth's atmosphere contains gases that filter out ultraviolet radiation. So, the correct options for 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are D, A, A, D, B, A, B, A, B and C respectively.

What is the atmosphere of the Earth?

The layer of gases that covers the Earth is known as the atmosphere. It is made up of roughly 78% nitrogen, 21% oxygen, and 1% additional gases like argon, carbon dioxide, neon, and methane. It is held in place by the gravity of the Earth. The troposphere, stratosphere, mesosphere, and thermosphere are the four principal layers of the atmosphere.

Gases in the atmosphere of Earth serve as UV radiation filters. CO2 acts as an insulator. The existence of life on Earth is not a result of atmospheric gases. A temperate temperature is kept by the atmosphere. The water cycle and precipitation are made possible by the atmosphere. Life on Earth benefits from gases in the atmosphere because they provide protection from harmful solar radiation.

Earth is protected by ozone in the upper atmosphere. The best way to think about how the atmosphere supports life on Earth is as the source of oxygen in the air. The atmosphere's carbon dioxide and oxygen are necessary for life on Earth.

So, the correct options for 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are D, A, A, D, B, A, B, A, B and C respectively.

Learn more about Atmosphere, here:

brainly.com/question/26767532

#SPJ3

Answer:

i think 1. is d and 2. is c i hope it helps

Explanation:

Other Questions

Please select the word from the list that best fits the definitionGrouping items together to keep observations organizedinferringpredictingclassifyingobserving

A few organisms have evolved to use mostly asexual reproduction. what must be true about these?

Passive expiration is preceded by the:a. recoil of the lungsb. contraction of the internal intercostals muscles.c. contraction of the diaphragm.d. increase in atmospheric pressure.e. increase in CO2 in the blood

Dna, or the instructions for making proteins, is found within the _____ of the cell; while protein synthesis machinery is found in the _____ of the cell.