A piece of alien DNA cannot multiply itself in the progeny cells of the organism because:

a. It has no the sequence called Origin of replication (ori) needed for starting replication.

b. A piece of DNA will be denatured and damaged soon as it has no stability.

c. A piece of DNA is easily unwound and the H bonds between nitrogen bases are broken.

d. Both A & B.​

Answer:

d. ​Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay

Explanation:

Dental caries results when cariogenic (caries-causing) bacteria metabolize carbohydrates or sugars present in the mouth for their energy needs, producing organic acids as byproducts, thus lowering the pH of the plaque biofilm.

The hydroxyapatite of tooth enamel is composed mainly of phosphate ions (PO₄³⁻) and calcium ions (Ca⁺). Under normal conditions, there is a stable equilibrium between the calcium and phosphate ions in saliva and the crystalline hydroxyapatite. At low pH (acidic conditions), there is a shift in equilibrium resulting in the dissolution of hydroxyapatite from tooth enamel, a process known as demineralization. A reverse process called remineralization (the process of incorporation of minerals in tooth enamel) occurs when the saliva, acting as a buffer elevates pH. When equilibrium is shifted to favor continued demineralization, dental caries results.

However, when fluoride is present in saliva, fluorapatite, rather than hydroxyapatite, forms during the remineralization process as fluoride ions replace hydroxyl groups in the formation of the apatite crystal lattice.

Fluorapatite is less soluble than hydroxyapatite making it more resistant to demineralization, even under conditions of low pH. Thus, fluoride acts as an effective anticaries agent.

Answer:

The body is soft and unsegmented. Body is divisible into three regions – head, a visceral mass, and ventral foot. Body is covered by a mantle and shell. They can be found in different habitats, both aquatic and terrestrial.

Answer:

C

Explanation:

Answer:

Eukaryotic Cell

Explanation:

Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.

Evaporation of water molecules from the cells of a leaf creates a suction which pulls from the xylem cells of the roots.Thus,the transpiration helps in the absorption and upward movement of water and minerals dissolved in it from roots to leaves in the help of ascent of sap .

may this was ur answer

Answer:

A.) Nate is working on generativity

Explanation:

Generativity is the ability to provide care or concern for younger or older genrations. Nate offers to be the mentor because he loves helping the new teachers get inspired about working with children. According to Erik Erikson theory of psychosocial development, generativity can refer to "making your mark" or impact on the world through creating or nurturing things that will outlast in an individual/individuals.

Answer:

b

Explanation:

Answer: The amniotic egg was an evolutionary invention that allowed the first reptiles to colonize dry land more than 300 million years ago. Fishes and amphibians must lay their eggs in water and therefore cannot live far from water. ... Within the chorion is the amnion, the membrane for which the amniotic egg is named.

Explanation:

Answer:

DNA- contains instructions on how a cell functions

Nucleus- controls the activity of the cell

Cytoplasm- supports and protects the organelles in the cell.

Explanation:

Hope it helps you. Please mark as the brainliest. Thanks.

Answer:The answers are right js did on edge Thanks !!!

Explanation:

Answer:

3 (dominant) 1 (recessive)

Explanation:

Answer:

d) The frequencies of the alleles for dark wing color in the moth population

changed.

Answer:

D

Explanation:

It would best describe how or what made the moths have more dark/darker collored wings overtime.

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\text{What is \underline{Homeostasis}?}[/tex]

[tex]\large\text{Homeostasis is the self-processing in the biotic structured which}\\\large\text{tended to perpetuate (maintain) rationally while it is modified}\\\large\text{its conditions that can be prototypical for surviving}[/tex]

[tex]\large\text{Homeostasis has.... }\\\bullet\large\text{ Controllable center(s)}\\\bullet\large\text{ Effectors}\\\bullet\large\text{Variables (aka Homeostasis)}\\\bullet\large\text{ Receptors}[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

[tex]\large\text{Here is what each of your features of homeostasis means}\downarrow[/tex]

Answer:

answers answers answers

Explanation:

1. carbohydrate

2.store energy

3.chemical energy

4. food

5. glucose

6. cellular respiration

7. ATP

Answer:

D. Viruses can have a lipid envelope derived from the host cell membrane. So they have the same phospholipids and glycoproteins (they also have specific viral proteins)

D. A person with a Doctoral Degree in Entomology and a Certificate in Forensic Entomology.

They will know the most about forensic entomology compared to the rest of the options.

A person with a Doctorial Degree in Entomology and a Certificate in Forensic Entomology. Hence option D is correct.

Entomology is defined as the investigation of insects and how they interact with people, the environment, and other living things. Entomology is employed extensively in a wide range of fields, including evolutionary biology and medical research, in addition to studying the anatomy and physiology of insects. It aids agricultural entomologists in their research on biodiversity as well as in the protection of priceless resources from insect pests.

Forensic entomology is defined as the study of arthropods, particularly insects, connected to criminal activity and other judicial issues. An essential tool in the examination of homicide, self harm, and other violent crimes is forensic entomology. When properly gathered and examined by skilled forensic investigators, insect evidence found on a victim's corpse can provide important information.

Thus, a person with a Doctorial Degree in Entomology and a Certificate in Forensic Entomology. Hence option D is correct.

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https://brainly.com/question/2929449

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Answer:

Answer is c. fungi, protista and plantea

Answer:

Eating

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Answer:

Like chromosomes, genes also come in pairs. Each of your parents has two copies of each of their genes, and each parent passes along just one copy to make up the genes you have. Genes that are passed on to you determine many of your traits, such as your hair color and skin color.

is this what you are looking for

Answer:

5.c 6.c 7.b 8.a

Explanation:

I hope it helps u :)

Answer:

How would you  contained protein ​

Explanation:

One would test a sample of powdered milk to see if it contained protein ​by using copper sulfate solution and  sodium hydroxide solution.

A structure composed of amino acids. The body need proteins to function properly. They serve as the building blocks for several bodily components, including the skin, hair, and enzymes, cytokines, and antibodies.

An essential component of a balanced diet is protein. Amino acids are the chemical "building blocks" that make up proteins.

Amino acids are used by your body to create hormones, enzymes, and to build and repair muscles and bones. They can be utilized as a source of energy as well.

The test can be done as:

Thus, using copper sulfate solution and sodium hydroxide test, one can determine the protein content in the sample.

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Answer:

For example, if a car turns a corner at a constant speed, it is accelerating because its direction is changing. The quicker you turn, the greater the acceleration. So there is an acceleration when velocity changes either in magnitude or in direction, or both.

Explanation:

hope this helps... (i can't see the pic...)

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Answer:

Birds + planes = chicken

Explanation:

If you divide the air density by the amount of dirt on the sun, you get three roasted turkeys and a new haircut.

Answer:

Hey you forgot the part were you stuff the candle with cotton and then square the amount of laptops you have then divide by the amount of iphones produced by the worms that eat batteries to get the answer chicken AND 3 marked white vans but the catch is there are not white they are actually red

Explanation:

Answer: D

Explanation:

The main reason we put telescopes into space is to get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying. Our atmosphere acts like a protective blanket letting only some light through while blocking others.

Answer:

C. produced from magma.

D. formed at Earth’s surface

Explanation:

Earth crust refers to the outermost layer or thin shell which makes up the earth such as sedimentary, metamorphic and igneous rocks.

The Earth crust is typically made up of two (2) main types;

1. Oceanic crust: this crust has a thickness ranging from 5 km to 10 km and comprises of denser rocks such as diabase, gabbro and basalt.

2. Continental crust: this crust has a thickness ranging from 30 km to 60 km and comprises of minerals such as quartz, silicate, feldspar, aluminum and less dense rocks such as granite

An igneous rock has a coarse texture and is dark in color. Also, an igneous rock can be accurately described as being produced from magma and formed at Earth’s surface.

Answer:

Produced from magma

Explanation:

I got it right on the test hope this helps

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Answer:

read ex

Explanation:

129 ATP

Answer:

d

Explanation:

d.gravitropism as it's both going downwards

Answer:

B. Only blue light penetrates this far

Explanation: