During the replication process, which enzyme(s) unwind(s) the double-stranded DNA?
DNA polymerase
DNA gyrase and topoisomerase
DNA primase and helicase
DNA ligase

Answers

Answer 1

Answer:

The correct answer would be C) DNA primase and helicase

Explanation:

DNA primase and helicase unzip and uncoil a small portion of the double-stranded DNA, creating what is often called the replication fork.

Ignore the top answer, its wrong. I took the test.

Answer 2

Answer: The correct answer is DNA primase and helicase

Explanation:

I took the test


Related Questions

The passage of genetic instructions from one generation to the next is known as what?

Answers

Answer:

heredity

Explanation:

Answer: heredity because it is

Genetic information is encoded in a linear sequences of nucleotides,
which are structures that contain

A) a sugar group, a phosphate group, and a nitrogen base
B)an amine group, a functional R group, and a carboxyl group
C)short chains of CHO
D)long chains of CHO

Answers

Answer:

B)an amine group, a functional R group, and a carboxyl group

Explanation:

Sitting down at her favorite restaurant, Aliyah is looking at the menu trying to figure out what she would like to have. She notes an asterisk next to one of the dishes and finding the note at the bottom of the menu, it says, “Although we will cook to order, be aware that consuming this dish raw or undercooked may increase your risk of contracting salmonella.” Which menu item is MOST likely being referenced here?

A. Eggs Benedict
B. Blackened Salmon
C. Chocolate Cake
D. Spinach Lasagna

Answers

Answer:

my guess is A. Eggs Benedict

Explanation:

eating eggs raw may lead to illness.

Suppose you have two pieces of modeling clay. One piece contains more clay than the other. How do the two pieces of clay differ?

Answers

One is bigger simplicity
One piece has more then the other

Edxcel alevel biology past papers: some of the blood plasma of individuals who have survived infection wtih Ebola can be collected. This can be used in the treatment of individuals currentlty infected with Ebola. Explain why the blood plasma from survivors can be used to treat new cases of Ebola infection.

Answers

Answer:

This was the only treatment options adopted for the Ebola in  1995 in the Democratic Republic of Congo. The assumption was that immune response is generated by the virus in the WBC of the infected individuals. These response produce antibodies.

A total if 8 patients were transfused with these blood contained antibodies, but one of these died, the remaining 7 patients survived.

The antibodies were believed to  have  multiplied(produced b-cells) to neutralize the Ebola virus(antigens)  and to ensure the survival of the patients

Explanation:

A feral cat needs to eat two mice a day to survive. A mouse needs to eat 5 seeds a day to survive. How many seeds are required to feed a feral cat for a week (7 days)?​

Answers

Answer:

70 seeds

Explanation

5 is the food for a mouse  (day)x2 mice for cat=10. 10x7(week)=70 seeds

hope this helps!

how does water boiling on a stove represent all 3 types of heat transfer​

Answers

Answer:

For example, when a pot of water is placed on the stove to boil, conduction heat warms up the pot, which then heats the water molecules inside. As these molecules heat, convection causes them to move away from the interior of the pot as they are replaced by cooler molecules.

Explanation:

when something is frozen does it increase or decrease in density?

Answers

Answer:

Water expands when it freezes making it less dense than the water from which it freezes. In fact, its volume is a little over 9% greater (or density ca.

Answer:

Depends on what is freezing. Generally it increases density.

Explanation:

water when frozen has a lower density. but generally freezing increases density because it packs the molecules tighter

If a person combat the disease without a vaccine introduced to his body,such immunity is known as

natural active immunity

natural passive immunity

Artificial active immunity

artificial passive immunity​

Answers

Answer:

natural active immunity will be the answer

thermal energy transfer by conduction happens when heat moves from one object to another by

Answers

Answer:

Touching

Explanation:

Conduction is when you transfer energy by touching or direct

Answer:

touching

Explanation:

Information about which of the following would be most pertinent to a small organic farm that solely relies on manual labor to till, plant,
water, and harvest crops?

dehydration and heat exposure precautions

heavy equipment training and maintenance

drip irrigation installation and maintenance

hazardous chemicals storage precautions

Answers

Answer:A

Explanation:

If i had to guess its A because its the only one that doesn't require equipment, since the question said it was a small organic farm that only practiced Manuel labor.

Answer:

dehydration and heat exposure precautions

Help asap!

The broadest group an organism can be classified into is its:

A. kingdom

B. domain

C. order

Answers

Answer:

B. Domain

Explanation:

In order from broadest to most specific:

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Answer

Explanation:

The broadest category in the Linnaean system is the kingdom. Figure above shows the Animal Kingdom because Homo sapiens belongs to that kingdom. Other kingdoms include the Plant Kingdom, Fungus Kingdom, and Protist Kingdom. Kingdoms are divided, in turn, into phyla (phylum, singular)

which part of the cell membrane in nonpolar and prevents the cell from dissolving

Answers

Answer:The part of the cell membrane that is nonpolar and prevents the cell from dissolving is called the Nonpolar Fatty Acids.

Explanation:The part of the cell membrane that is nonpolar and prevents the cell from dissolving is called the Nonpolar Fatty Acids.

Which nitrogenous bases are considered purines?

Answers

adenine

cytosine

consider purines

A population distribution shows _______.

a.the distribution of age groups within a population

b.the amount of organisms in a unit area

c.the total number of organisms in a population

d.where and in what arrangement organisms are located

Answers

Answer:

D

Explanation:

Think about the definition of “distribution “.

Answers:
D. Where and in what arrangement organisms are located
explanation: sorry if it's wrong

How many valence electrons does carbon have? Is this atom satisfied? Explain.

Answers

Answer:

4 valence electrons

Explanation:

Because of the relative stability, these atoms often form covalent bonds rather than ionic bonds that need a charge. One example is Carbon. It has 4 valence electrons, so it can make a 4+ or a 4- charge.

Answer:

Carbon has 4 valence electrons. It is not satisfied. To be satisfied, it needs to covalently bond with 4 electrons to achieve octet (8 valence electrons).

A diagram that shows the connections of many food chains is called a ...

Answers

Hey :)

I think it’s a ‘food web’ but honestly I’m not sure

I hope this helps anyways :)

The genetic material is arranged differently in the cell of bacteria compared with animal and plant cells.
Describe two differences.

Answers

Answer:

unlike bacteria cells, plant and animal cells both have membrane. Bacteria cells lack membrane. Bacteria multiple by binary fission.

Animal and plant cells contain linear chromosomes. Bacteria have one circular chromosone and no nucleus. Plasmids carry genetic material in some bacteria.

What is bacteria?

Bacteria are unicellular organisms that are very tiny. Bacteria can be found practically anywhere on Earth and play an essential role in the ecosystems that exist there. Some animals are able to survive in environments with both high temperatures and high pressures.

Both plant and animal cells store their genetic material in the form of chromosomes, which are linear structures. Bacteria do not possess a truly organized nucleus and instead contain a single chromosone that is round. Plasmids are tiny circular pieces of genetic material that can be carried by some bacteria. These plasmids carry additional genetic material.

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You need to find out why the GBR water is inhibiting (stopping) photosynthesis in the algae. The three major parts of photosynthesis are PSI, PSII and the Calvin cycle. The database has provided 3 things that could be inhibiting photosynthesis: high sea temperatures, paraquat, and diuron.

Answers

Answer:

Explanation:

The question is not complete below is the remaining part of the question

Justify your choice by writing a hypothesis to explain how it has stopped the algae from making ATP, NADPH and sugars. You will be able to revise your hypothesis as you do more experiments

Explanation:

The hypothesis will be

High sea temperature inhibit Algae growth

Herbicides reduces algae photosynthesis rate

Algae respond to temperature differently some thrive at a low temperature, some at a moderate temperature but when the temperature is very high the rate of photosynthesis will reduce because they can not undergo the normal body physiological function as a result of harsh environment. In green plant at a very high temperature stomata closes to regulate water loss this prevent Carbon dioxide from coming in and photosynthesis rate reduces

Paraquat and Diuron are herbicide that prevent the growth of plants, when they are sprayed Algae is affected they die from immediate action of this chemical and their colour changes since chloroplast the green pigment is where light hit for photosynthesis to occur when the color changes the active site is affected photosynthesis can no longer occur.

Answer:

Diuron

Explanation:

Increasing the temperature only decreases the sugar, not the ATP and NADPH. I predict that Diuron will be inhibiting photosynthesis because photosynthesis as a whole should not work if Photosystem II is interfered with. Also, because Paraquat only lowers NADPH and sugar and not ATP, Diuron is the only choice left.

PLEASE ANSWER THESE QUESTIONS COMPLETELY!!! WILL MARK BRAINLIEST!!!
DOC 1 Questions:
A. Is the suspected father actually the father of this child?
B. How do you know?

Answers

Answer:

He is not the father

Explanation:

As it says, the DNA matches up half of the time. The mother and child have 2/4 markers lined up, while the suspected father has no similar geonomes.

How far does a runner travel if they maintain a speed of 8.5 m/s for 240 s?

Answers

The answer is "2,040 m"
the answer is 2,040 m/s

how can limiting factors (density dependent and density independent) affect a population size?

Answers

Density-dependent limiting factors cause a population's per capita growth rate to change—typically, to drop—with increasing population density

Which of the following is not a reason that nonnative species are reared outside their native ecosystems?
a. They are commercially important.
b. They are used to replace native species.
C. They are used for restocking programs.
d. None of the above

Answers

Answer:

D

Explanation:

All of the given reasons are reasons that nonnative species are reared outside their native ecosystems. The correct option is D.

What are nonnative species?

Non-native species are animals, plants, and other organisms that do not develop natively in a region but are instead introduced through intentional or unintentional human activity.

Non-native species, unlike invasive species, do not necessarily threaten or threaten the existence of other species within the ecosystem.

Native plants and animals may go extinct as a result of invasive species, which can also decrease biodiversity, compete with native species for scarce resources, and disrupt habitats.

Ecosystems along the coast and in the Great Lakes may be severely disrupted, with significant negative economic effects.

They are employed in restocking efforts, to replace native species, and for commercial purposes.

Thus, the correct option is D.

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Which is the answer A B C Or D

Answers

Answer:

I believe that it might be choice A, but I'm not entirely sure.

the answer is c i’m pretty sure

which cell is the only cell in a human body that could be seen with the naked eye

Answers

human egg cell


But human egg cell is the one of the largest cells in the human body that can be seen with naked eye. i.e we are able to see it without the help of a magnification device. The size of this cell is about 0.12 mm in diameter.

The diffusion of a substance into or out of a cell requires

Answers

Answer:

Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.

Explanation:

The diffusion of a substance into or out of a cell requires a process called diffusion, by which the molecules pass out through the plasma membrane.

What is diffusion?

Diffusion is a key mechanism for material transfer within cells and for the passage of critical tiny molecules across the cell membrane. This process controls the exchange of gases in the gills and lungs. All cells release carbon dioxide as a byproduct of biological metabolism.

There are two processes by which the molecules pass through a semi-permeable membrane. The processes are osmosis and diffusion. When the material transfer from low concentration to higher concentration.

Thus, diffusion is the process by which molecules travel through the plasma membrane to allow material to enter or exit a cell.

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Two students completed an experiment to determine if pesticide use at local farms was causing fish kills in a local pond. The steps of the experiment are listed below. Select one location to collect water samples in the pond. Collect a 5-mL water sample at 8 am for two days. Measure the amount of pesticide present in each sample using the same measurement tools. After analyzing their data, the students conclude that pesticide runoff from farms is not causing the fish to die in the pond. Which of these statements best describes why their conclusion is not reliable? The pesticide measurements were the dependent variable. The samples were collected at different times. The samples were only collected for two days. The time of sample collection was not an independent variable.

Answers

Answer:

The pesticide measurements were the dependent variable

Explanation:

According to this question, an experiment to determine if pesticide used at local farms was causing fish kills in a local pond was conducted by two students. They followed the following steps:

- Select one location to collect water samples in the pond.

- Collect a 5-mL water sample at 8 am for two days.

- Measure the amount of pesticide present in each sample using the same measurement tools

However, after analyzing the data, they concluded that "runoff from farms is not causing the fish to die in the pond". The students' conclusion is not reliable because THE PESTICIDE MEASUREMENTS WERE THE DEPENDENT VARIABLE.

Note that, the dependent variable in an experiment is the measured variable while the independent variable is the manipulated variable. In this case, the students ought to measure the death RATE OF FISH KILLS as the dependent variable instead. The PESTICIDE is the independent variable of the experiment not dependent variable. This was the reason for the unreliability of the conclusion.

What is the function of the excretory system?


remove waste


break down food


respiration


transport nutrients

Answers

Answer:

The excretory system removes waste

i am horrible at science. please help

Answers

breathing more deeply and frequently

The third one, I had this question around a week ago

8. Write down the definition for the term "cross section” ?

Answers

I highly believe that cross section is either a shape or surface that would be exposed by a cut through something.
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