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A scientist used a radioactive isotope of nitrogen to label the nitrogenous bases of the DNA in a bacterial cell. The labeled cells were then allowed to grow and divide for one generation in a medium of non-radioactive nitrogen.
Describe how the distribution of radioactive DNA to the daughter cells provides evidence for semiconservative replication of the DNA molecule.

Answers

Answer 1

Answer:

D!

Explanation:

I Saw This Question Before! Good Luck On Your Test Thingy!


Related Questions

The opossum, which is native to North America, and the kangaroo, which is native to Australia, are marsupials.
The fact that both these mammals incubate their immature offspring in a pouch provides evidence that they -
O are descended from a common ancestor
O belong to the same species
O must range great distances to eat
have very similar skeletal structures

Answers

Answer:

Belong to the same species

Explanation:

Marsupials carry their young in "pouches", and are therefore related to other marsupials, like the kangaroo, opossum, wombats, and koala to name a few.

The opossum is a native of North America as the kangaroo is a native to Australia and both of them are mammals thus boh belong to the same specie. Thus option B is correct.

What are mammals?

A mammal is an animal that is warm-blooded and has hair, vertebrates, and backbone. These creatures share human relations and produce milk for their young ones. The kangaroo is like an opossum that is marsupials carry their young in "pouches".

Find out more information about mammals.

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Question 14 of 25
Use the word bank below to answer the questions that follow:

landfills limiting factor nonpoint source
habitat destruction
stop
migration biodiversity carbon dioxide
reverse
carrying capacity commensalism selective cutting
extinction adaptation ozone layer population density
nonpoint source
succession fossil fuel ecological footprint
symbiosis point source competition cost-benefit
Fill in the Blank
If a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to

Answers

Answer:

habitat destruction

Explanation:

A forest ecosystem offers a variety of ecosystem services and functions. Prominent among the services offered include habitats to a variety of fauna, watershed protection, carbon sequestration, etc.

When the trees in a forest are removed by clear-cutting, some of the services and functions specific to the tree layers cease. The various habitats provided are destroyed and the organisms that live in these habitats disappear.

Hence, if a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to habitat destruction.

Answer:

Habitat destruction

Explanation:

what would happen to the concentrations of pyruvate, NADH and intermembrane H* if the Krebs Cycle stopped working

Answers

Answer:

pyruvate - increase

NADH and intermembrane H* - decrease

Explanation:

Which of the following correctly organizes these genetic terms in order from smallest to largest?
chromosome, gene, nucleotide, DNA molecule
O nucleotide, gene, DNA molecule, chromosome
O DNA molecule, nucleotide, gene, chromosome
O DNA molecule, nucleotide, chromosome, gene

Answers

i believe that answer B. nucleotide, gene, DNA molecule, chromosome is correct :)

have a good day :D

Answer:

B

Explanation:

Lit

How does the molecule marked C and D leave our body

Answers

C - By exhaling/ breathing out

What does the presence of new rock near an oceanic ridge indicate?
A: There is always a deep-sea trench underneath
B: There is evidence of seafloor spreading
C: They are made from oceanic crust
D: They have iron oriented in different directions

Answers

Answer:

This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

Answer:

Its A

Explanation:

im doing the test

10. DNA and RNA are examples of which Biomolecule? *
Carbohydrates
Protein
Lipids
Nucleic Acid

Answers

Answer:

option D - Nucleic acid

Explanation:

Nucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

Find the density of an object that has a mass of 22.3g and a volume of 136.7cm3.

Answers

Answer:

[tex]0.1631309437 g/cm^3[/tex]

Explanation:

The formula for density is ρ[tex]=\frac{m}{V}[/tex] (where [tex]m[/tex] represents mass, and [tex]V[/tex] represents volume).

With this formula, we can calculate the density of the object:

ρ [tex]= \frac{22.3g}{136.7cm^3}[/tex]

[tex]=0.1631309437 g/cm^3[/tex]

Hope this helps :)

HELP

What is a hydrogen bond?

Answers

Hydrogen bonding, interaction of a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces

Answer:

A hydrogen bond is a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

what is C6H1200 for photosynthesis

Answers

Answer:

glucose

Explanation:

Molecular formula for glucose is C6H12O6

PLZ HELP I WILL GIVE 25 POINTS AND BRAINLIEST!

Answers

Answer: C

Explanation:

complete mitosis in shorter time

What is the sentence of pluripotent?

Answers

answer - 1) Such cells are called pluripotent stem cells. (2) Somatic coding mutations in human induced pluripotent stem cells. (3) Induced pluripotent stem-cell research does not. (4) Induction of pluripotent stem cells from mouse embryonic and adult fibroblast cultures by defined factors.
Such cells are called pluripotent stem cells. Somatic coding mutations in human induced pluripotent stem cells.Induced pluripotent stem-cell research does not. Induction of pluripotent stem cells from mouse embryonic and adult fibroblast cultures by defined factors.

Use the chart above to determine which substitution mutation has the potential to cause more damage? Highlight your answer. (2pts) a. Substitution of 3rd N-base to go from CAU to CAC b. Substitution of 3rd N-base to go from UGU to UGC c. Substitution of 3rd N-base to go from UCU to UUU 3. Explain WHY: (3pts)_________________________________________

Answers

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of the chart referred to in the question. However, what appears to be the case is that the three nitrogenous bases represent codons (and the missing chart is the codon chart). The mutation that has the potential to cause more damage will be the one that would change the amino acid formed from the codon change.

A. CAU to CAC: The codons CAU and CAC both form the amino acid histidine and thus is not expected to cause a major damage.

B. UGU to UGC: The codons UGU and UGC both form the amino acid cysteine and thus is not expected to cause a major damage.

C. UCU to UUU: Codon UCU forms the amino acid serine while the codon UUU forms the amino acid phenylalanine. Thus, this eventual change in the amino acid formed has the potential to cause a major damage and thus option C is the correct option.

NOTE that a codon is a sequence of three DNA/RNA nucleotides that corresponds to a single amino acid.

part of the plant where photosynthesis generally occur​

Answers

Chloroplasts
Lollollol
The answer is the chloroplasts

please help me if you only know

Answers

Answer:

(1) Translation begins when a ribosome (gray) docks on a start codon (red) of an mRNA molecule in the cytoplasm. (2) Next, tRNA molecules attached to amino acids (spheres) dock at the corresponding triplet codon sequence on the mRNA molecule.

Explanation:

1st one.

Answer:

Hi how are you doing today Jasmine

True or false identify if it is false: Wetlands may be either freshwater or salt water biome.

Answers

Answer:

true

Explanation:

Which is an example of osmosis?​

Answers

Osmosis is gradual absorption. ... An example of osmosis is when red blood cells, which have a high concentration of protein and salt, are placed in a lower concentration fluid like water, the water will rush into the red blood cells.

Which type of transport requires input of energy from the cell?

Answers

Homeostasis
Hope this helps:)
active transport is the answer

Humans have 46 chromosomes and are called

Answers

Answer:

autosomes

Explanation:

If the mountain lion is removed from the food web. what will most like happen? A Nothing will happen in the food web B the robin population will increase C deer population will increase D fox population will increase

Answers

Answer:

C

Explanation:

I'm assuming that the mountain lion eats deer, so the deer population would increase if the lion population was removed. The population of whatever the lion eats would increase.

Answer:

D.) Deer population will increase

Explanation:

Because the lions wont eat the deer anymore

Nerves cross over from the left to the right side of the brain and vice versa in the what ?

Answers

Answer: The left side of the body crosses over to the right side of the brain and information from the right side of the body crosses over to the left side of the brain. Therefore, damage to one side of the brain will affect the opposite side of the body.

Explanation:

What do scientists need to extract the DNA from? How much DNA is there?

Answers

Answer:

DNA extraction is a routine procedure used to isolate DNA from the nucleus of cells. When an ice-cold alcohol is added to a solution of DNA, the DNA precipitates out of solution. If there is enough DNA in the solution, you will see a stringy white mass.

Explanation:

Based on the fossil layers shown here, what can you conclude about the changes to the environment?

Answers

There used to be solid land and then something happened and a lake or just a body of water formed over it or was made over it

Based on the fossil layers shown, I can conclude that the ocean used to be land. The water level rose over the years creating an ocean over it

Which property of water allows for a balloon to NOT pop under a flame?

Answers

Answer:

The water absorbs the heat

Explanation:


What term best describes the tail end of a phospholipid?

Answers

Answer:

The tail of the phospholipid is hydrophobic because it is composed of carbon and hydrogen atoms.

Explanation:

Which shows the correct order of processes for fungi to reproduce sexually?

A genetically unique fungus is produced, a spore forms, and hyphae exchange genetic material.
A spore forms, a genetically unique fungus is produced, and hyphae exchange genetic material.
Hyphae exchange genetic material, a spore forms, and a genetically unique fungus is produced.
A spore forms, hyphae exchange genetic material, and a genetically unique fungus is produced.

Answers

The statement 'hyphae exchange genetic material, a spore forms, and a genetically unique fungus is produced' shows the correct order for fungi to reproduce se_xually.

What is a fungus?

A fungus is a multicellular eukaryotic organism that can reproduce by both se_xually and ase_xually modes of reproduction.

A hypha is a filamentous structure found in a fungus, which represents a type of ase_xual reproduction.

In conclusion, the statement 'hyphae exchange genetic material, a spore forms, and a genetically unique fungus is produced' shows the correct order for fungi to reproduce se_xually.

Learn more about fungi reproduction here:

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#SPJ2

Answer:

C.

Explanation:

ik im late but whatver

A cross between organisms with two different phenotypes produces offspring with a third phenotype in which both of the parental traits appear together.​

Answers

Answer:

With codominance, a cross between organisms with two different phenotypes produces offspring with a third phenotype in which both of the parental traits appear together. This statement is true.

Answer:

Co-dominant trait

Explanation:

For the Usa test prep

The interaction between genes and development in behavior is known as:
A. extrinsic-intrinsic
B. Nature-nurture
C. gene environment
D. Developmental interaction

Answers

Answer:

B. Nature-nurture

Explanation:

genes = nature

development = nurture

B natural-nuture......

Will the middle one shrink swell or neither and the same with the one on the right

Answers

Answer:

I dont know I am ucdg fudge HD this ciehvf dice sorry imbibe ihochbs kick

Turn to the back of your worksheet to answer the rest of the questions. 1. How are igneous rocks formed? Group of answer choices weathering and erosion into sediments, then deposition and lithification rocks get buried deep in the earth where they melt and then cool rocks are under heat and pressure so they can change rock is split into larger pieces and then dissolves in water where it hardens into rock

Answers

Answer and Explanation:

Igneous rocks form most of the earth´s crust. They are the result of the solidification of rocky, molten material, the magma. Rocks are melt in the interior of the earth´s crust or in the mantle, and then, as they are less dense than the other rocks, tend to ascend toward the surface. As they ascend, they get cold and solidify.

There are two kinds of igneous rocks, according to the moment of solidification. Extrusive igneous rocks are the ones formed when the molted material gets to get to the earth´s surface and crystalize there. Intrusive rocks get formed when the magma loses its motility before reaching the surface, ending by crystalizing in the deepness.  

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