restriction enzymes cut DNA at totally random places. true of false?

Answers

Answer 1

Answer:

False

Explanation:

Restriction enzymes, also called restriction endonucleases, are enzymes found in bacteria that cut DNA. They recognise target sequences and cut DNA at or near these sequences. These sequences are called restriction sites.

They act as a defense mechanism against invading pathogens. However, they are routinely used in molecular biology labs to perform DNA technologies such as genetic engineering.


Related Questions

what do you think causes different phenotypes in organisms how does the phenotype depend on its genes (genotype)​

Answers

Answer:

They difference in phenotypes is dependent on the genes. The more dominant gene will overpower a recessive gene, or if there are two recessive genes together, that will be the phenotype. When things are cross breaded they introduce different genotypes that allow for different looking phenotypes.

Example: Dominant blue flower (Bb)  mixed with recessive yellow flower (bb)

        B            b

b       Bb          bb

b       Bb          bb

There is a 50/50 chance the offspring will be either blue or yellow

The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that. When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.

What is phenotype?

A "phenotype" is simply an observable trait. "Pheno" simply means "observe," and it derives from the same root as "phenomenon."

The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that.

When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.

Thus, in this way, phenotype is dependent on genotype of the organism.

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Where are coral reefs located?
A. estuaries
B. neritic zone
c. intertidal zone
D. oceanic zone

Answers

Answer:

c

Explanation:

intertidal zone

Which element is not found on most main sequence stars?

Answers

Answer:

Nitrogen is the right answer.

Can someone pls help me with this (8th grade science)

Answers

Answer:

A

Explanation:

As he kicks the ball the speed increases, where he kicks the ball also is a factor, since he kicks it in the same direction that is why it is choice A.

When we breathe, we inhale oxygen and release carbon dioxide. What cell process does our body use the oxygen for?

A. Photosynthesis

B. Cellular respiration

C. Osmosis

Answers

Answer:

Cellular respiration

Explanation:

This is because if you see Photosynthesis is used for plants to get a food source from the Sun. Osmosis is the movement of chemicals from a less converted membrane to a more. I think i said that wrong but. I am sure it is cellular respiration which is the despirsion of waste products. So yeah Answer is Cellular respiration

Pls state lamarck's theory​

Answers

Answer:

Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring

_____ allow the stomach to stretch. A. Gastric glands B. Palatines C. Gastric rugae D. Villi

Answers

Answer:

C) Gastric Rugae

Explanation:

Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion.

Answer:

C. Gastric Rugae

Explanation:

The inner layer of the stomach is full of wrinkles known as rugae (or gastric folds). Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion.

Where dose plastic come from?

Answers

Answer:

Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil. Crude oil is a complex mixture of thousands of compounds and needs to be processed before it can be used. The production of plastics begins with the distillation of crude oil in an oil refinery.

Explanation:

(TRUE OR FALSE)
As discoveries were made that couldn't be explained by spontaneous generations, scientist came up with an updated version of the spontaneous generation model?
PLZ HELP WILL BRAINLIEST
IF U DONT KNOW THE ANSWER DONT U DARE

Answers

Answer: I'm pretty sure this is true

Explanation:

Recall what you know about nervous tissue to answer the following questions. Nervous tissue can generate and conduct ____ signals that control the body.
answer choices are:
chemical
electrical
thermal

Answers

Answer:

Nervous tissue can generate and conduct electrical signals that control the body.

Explanation:

The neuron is the specialized cell that provides function to nerve tissue. Given the structure of the neuron, this cell is capable of creating and conducting information in the form of electrical impulses or signals, by depolarizing its cell membrane and generating action potentials.

The information generated and transmitted by the neurons allows the nervous system to obtain internal and external information of the organism, as well as to control all the body functions.

    The other options are not true because nerve tissue does not generate or conduct thermal or chemical signals to perform its function.

Answer:

Part 1: electrical

Part 2: A, B, E

Explanation:

did it on edg.

What effect does increased carbon dioxide
have on global temperatures? (two complete
sentences minimum)

Answers

Answer:

Carbon dioxide increases temperatures, extending the growing season and increasing humidity. Both factors have led to some additional plant growth. However, warmer temperatures also stress plants. With a longer, warmer growing season, plants need more water to survive.

Explanation:

i need help with 5-10 please

Answers

Answer:

5. C. C6H12O6 + O2 ➡️CO2 + 02 + ATP

6. D. It breaks down glucose to form ATP.

7. D. All autotrophs are producers

8. D. All 4 statements are correct.

9. False

10. False

Explanation:

The process of photosynthesis converts carbon dioxide and water into glucose and oxygen while the in the process of cellular respiration, glucose and oxygen are converted to water and carbon dioxide and ATP is formed.

In photosynthesis, glucose is formed while in cellular respiration ATP is formed. The process of forming ATP and glucose are ways in which energy is cycled and oxygen cycle occur in the atmosphere. Energy can not be recycled but it is rather used. Only green plants carry out photosynthesis. Autotrophs are known to be primary producers.

how do skin cells replace itself after an injury?

a) skin cells go through the process of budding to make new identical cells.
b) skin cells go through the procces of mitosis to make new identical cells.
c) skin cells go through the process og photosynthesis to make new identical cells.
d) skin cells go through the process of cellular respiration to make new identical cells.

Answers

Answer:

d

Explanation:

as a result of accumulation of waste products in the body , these substances are removed from the body via the skin hence they undergo cellular respiration

Answer:

b) skin cells go through the process of mitosis to make new identical cells.

Explanation:

The skin is the largest organ in the human body; it forms a protective barrier that keeps out external pathogens, and is integral to waste removal. When the organ is injured, damaged cells initiate an immune response, while healthy cells nearby begin to replicate.

This type of cell replication involves somatic cells and results in the diploid number of chromosomes called mitosis. Skin cells are somatic- they contain all 24 pairs of human chromosomes. During replication, the chromosomes are unwound, and copied- then, the newly copied chromosomes separate into two identical daughter cells with the same chromosome number.

1. Explain the change in erythrocyte count in the case of anemia

2. Where are red blood cells produced?

3. What type of cells help blood to clot?

4. What makes the human circulatory system efficiently carry oxygen to the tissues?

5. Describe the role of blood plasma.

6. Explain the role of lymph in our body

Answers

1. Erythrocytes is red blood cells, and anemia means a lack of red blood cells in the blood. So erythrocyte count in a patient diagnosed with anemia such as pernicious anemia is going to be significantly lower than normal.

2. RBC’s (red blood cells) are produced in the bone marrow
3. Platelets help with clotting as well as clotting proteins produced in the liver
4. The human circulatory system is designed specifically to transport oxygen as well as nutrients to all parts of the body through blood vessels. Humans in the womb have blood vessels and a beating heart developed by the 1-2 months in the womb, and the heart immediately begins work. The human circulatory system is efficient because we were created with a system to be as efficient as possible. The circulatory system is basically a highway made of tunnels that allows RBC’s and WBC’s to pass through to every part of the body including major organs. Unfortunately unhealthy eating habits and poor exercise cause this circulatory system to become less and less effective till the point of heart attack, stroke, or major cardiovascular disease.
5. Blood plasma is very important in the transfer of nutrients as well as hormones to the major organs of the body.
6. Lymph is a clear watery substance that carries proteins and other substances throughout the body in order to maintain fluid balance. Lymph is part of the lymphatic system which is a tiny constituent of the immune system.

EASY!!!!4. Select all that are Non-metals
Magnesium
Phosphorous
Fluorine
Copper
Potassium
lodine
Gold

Answers

Answer:

Phosphorus

Fluorine

Iodine

Which of the following shows a correct base pairing in DNA?
A and G
T and G
C and A
Gand C

Answers

I think it is G and C

Answer: G and C

Explanation:  DNA carries the hereditary information for organisms. W ithout DNA, our species would be unable to pass traits from generation to generation. DNA controls all aspects of an organism. It tells spiders how to spin webs, birds to lay eggs, and what color to make your eyes. The genetic information in DNA is stored as special chemical sequences, called chemical bases. The chemicals bases are adenine (A), guanine (G), cytosine (C), and thymine (T). Each base connects with another to form base pairs. Adenine always pairs up with thymine. Cytosine always pairs up with guanine

These types of trees have their leaves modified into needles to help
reduce water loss?

Answers

Answer:

Coniferous trees

Explanation:

They are mainly found in cold regions

what is the fundamental unit of matter?

Answers

the atom is the fundamental unit of matter.

(hope this helps ^^)

4.
______ describes the average conditions of our atmosphere over a long period
of time.

Answers

Answer:

The answer is Climate.

Answer: climate


Explanation: weather is what conditions of the atmosphere are over a short period of time, and CLIMATE is how the atmosphere “behaves” over relatively long periods of time.

When you mix salt with water in a beaker, the salt is no longer visible. What
happens to the salt?
A. The salt changes state from a liquid to a gas.
B. The salt reacts with the water to make a new substance.
C. The salt dissolves in the water.
D. The salt is destroyed by the water.

please help, i’ll mark brainliest if you get it right! please please only answer if you know the answer though, don’t guess i’m taking a test and i can’t fail as it’s the last one before the quarter ends ( tomorrow ) id appreciate it!! thank youuu

Answers

Answer:

C. The salt is dissolved by the water

Explanation:

When ionic compounds dissolve in water, the individual ions separate and get surrounded by water molecules—a process called solvation. Because the salt ions are charged, they dissolve much better in a polar solvent, which is also slightly more charged than a nonpolar solvent

Hope this helped, Have a Great Day!!

The properties of carbon atoms allow carbon to easily bond to other carbon atoms to form _____ and complex macromolecules with unique structures and special functions.

Very Large or
Very Small

Answers

The properties of carbon atoms allow carbon to easily bond to other carbon atoms to form very small and complex macromolecules with unique structures and special functions.

What do you mean by Macromolecules?

Macromolecules may be defined as biological molecules which carry a large number of atoms in them.

A Carbon atom has the unique ability to form bonds with other atoms of carbon, hydrogen, oxygen, nitrogen, etc. to form small or large and complex molecules.

Therefore, the properties of carbon atoms allow carbon to easily bond to other carbon atoms to form very small and complex macromolecules with unique structures and special functions.

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Copies of chromosomes are called____
1) platelets.

2)sister chromatids.

3)stem cells.

4) macrophages.

Answers

Answer:

option 2

Explanation:

because there divide

Can Plastic Waste Degrade Into The Soil?

Yes or no and explain

Answers

Answer:

Yes, but the process is too slow

Explanation:

We pack almost everything in this material and plastic has become a very normal occurrence in the modern world. Each year, people used 1.6 million barrels of oil just to make plastic bottles.

On the other hand, nature takes about 1000 years to develop a single plastic object, while plastic material takes about 240 years.

Fragmentation occurs when a large area of ecosystem is divided into smaller, isolated areas due to deforestation. After fragmentation, changes to the ecosystem can occur. Which is most likely an effect of fragmentation on an ecosystem?

a. Animal species in the fragmented area utilize new food sources in the deforested area.

b. Plant species from the deforested area alter conditions at the edge of the fragmented area.

c. The nutrient cycle is replenished by new species colonizing the deforested area.

d. Most native species disappear from both deforested and fragmented areas. ​

Answers

Answer:B

Explanation:

What is insulin and why do people with Type 1 diabetes need it to survive?

Answers

Answer:

Insulin is needed to move blood sugar (glucose) into cells. Inside the cells, glucose is stored and later used for energy. With type 1 diabetes, beta cells produce little or no insulin.

what do you think about the human and his structure how it's made all the human structure​

Answers

Answer:

its a thousand of generation evolution i think as of darwins law of evolution

Answer:

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5. Describe the different causes of climate change.

Answers

Answer:

natural factors, changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide.

Explanation:

Structure and Properties of Matter:Question 9
In which two states of matter can a substance take the shape of its
container?
Select one:
O
Liquid and gas
O
Gas and crystal
O
Sod and gas
O
Solid and liquid

Answers

Answer:

Liquid and gas

Explanation:

Liquid and gases can take the shape of their contains.

Liquids have not fixed shape and they readily flow.

Gases are random and they occupy the contains they fill .

Volume is the amount of space occupied by a substance. Gases can take up any amount of space in a container. Liquids can readily flow and take up spaces too. Solids are fixed and have a definite volume.

why an ecosystem with greater biodiversity more resilient than an ecosystem with less biodiversity?

Answers

Answer:

because if there's more biodiversity/animals there would be many animals that could take over  another animal role in the ecosystem incase of extinction unlike when there's fewer biodiversity or animals meaning fewer replacements and unbalance in the ecosystem

Explanation:

Hope this helped :)

What is the source of oxygen as a reactant in cellular respiration?

Answers

Answer:

The Reactants

What goes into the cell? Oxygen and glucose are both reactants of cellular respiration. Oxygen enters the body when an organism breathes. Glucose enters the body when an organism eats.

Explanation:

Hope this helped, Thanks :)

Cellular respiration has been the chemical process that uses glucose to produce energy. Oxygen is the reactant of the process that comes from the air (breathing) produced by photosynthesis.

What is cellular respiration?

Cellular respiration has been defined as the process vital for living organisms that use oxygen and sugar molecules to produce energy to drive the activities and functions of the body. The reactant of the process includes glucose and oxygen gas.

Oxygen and sugar are known to be the product of the photosynthetic reaction that uses carbon dioxide and water. The oxygen gas is present in the atmosphere and enters the body through breathing.

Therefore, oxygen acts as a reactant in cellular respiration that comes from the breathing process.

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