What makes an isotope radioactive? Are all isotopes radioactive?

Answers

Answer 1

Answer:

Radioactive Elements

In elements with more than 83 protons, all of the isotopes are radioactive. ... The force of repulsion among all those protons makes the nuclei unstable. Elements with more than 92 protons have such unstable nuclei that they don't even exist in nature.

Explanation:

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Related Questions

As a way to reduce the number of cases of malaria, a human tropical disease, a specific DNA sequence is inserted into the reproductive cells of Anopheles mosquitoes. Which process was most likely used to alter these mosquitoes? Explain your answer
A. cloning studies
B. genetic engineering
C. natural selection
D. random mutations

Answers

Answer:

B. genetic engineering

Explanation:

The picture shown below is from the aftermath of an earthquake. Describe what has happened.

Answers

Well, as you can see from the picture many things happened. You can see that many things are shaken up a bit include platforms and roofs. You can also see what looks to be cracks in the road and well as debris.

Pleas e Brainlyiest if you answer

Answers

Answer:

B

Explanation:

Answer:

The second option (i think)

Explanation:

Chromosomes are the things that make organisms what they are. They carry all of the information used to help a cell grow, thrive, and reproduce. Chromosomes are made up of DNA. Segments of DNA in specific patterns are called genes.

how would uranus not be classified as a dwarf planet and what i mean by that is there anything that could happen that would just make it a dwarf planet

Answers

Answer:

Uranus Could Not Be Considered A Dwarf Planet Unless..

Explanation:

I don't understand your problem that well. However dwarf planets have to file these three criteria.

1. Orbits the sun,

2. Has enough mass to assume a nearly round shape,

3. Has not cleared the neighborhood around its orbit and is not a moon.

The region around a star where sunlight is strong enough to enable photosynthesis and keep water on the surface of a planet liquid is called what?

Answers

AKA The “Goldilocks Zone” plz give brainliest! have a nice day. Habitable Zone (HZ) is the answer

Why are archaea in a different domain from bacteria?
A. They are multicellular, but bacteria are unicellular.
B. They are thought to have separate paths of evolutionary
development
C. They are able to perform endosymbiosis, but bacteria are not.
D. They have no similar characteristics.

Answers

Answer:B

Explanation:

Archaea is in a different domain from bacteria because they are thought to have separate paths of evolutionary development. Therefore, the correct statement is option B.

What are the differences between archaea and bacteria domains?

Archaea and bacteria are both prokaryotic organisms, but archaea are more closely related to eukaryotes than bacteria. Archaea have unique  lipid membrane and cell wall components that are different in composition than those found in bacteria.

These differences suggest that archaea and bacteria evolved to have separate paths of evolutionary development early in the history of life on Earth and then classified into Archaea and Bacteria domains.

Based on the phylogenetic tree constructed by researchers, the tree has classified life into three domains which are Archaea, Bacteria, and Eukarya These domains are based on their fundamental genetic and biochemical differences.

Therefore, archaea and bacteria are in a different domain because they followed separate paths of evolutionary development.

Learn more about the archaea domain here:

https://brainly.com/question/31089143

#SPJ5

Biodiversity
8
A farmer who owns a large fruit orchard has noticed that certain tree species in his orchard are failing to produce fruit and are slowly
dying. This has caused a decrease in the variety of fruit available for him to sell to consumers. Which of the following changes has
most likely caused this change in biodiversity?
OA
increased soil aeration due to an increase in earthworm populations
OB
decreased rainfall due to a prolonged period of drought
OC. decreased competition for space due to the removal of weeds
OD
increased pollination due to an increase in pollinator populations

Answers

Answer:

OA increased soil aeration due to an increase in earthworm populations.

Answer:

it is B. decreased rainfall due to a prolonged period of drought

Explanation:

trust me i got it right on my quiz

2. About how often does a Full Moon happen?

Answers

Answer:

usually once a month

Explanation:

The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective. This occurs when Earth is located between the Sun and the Moon (more exactly, when the ecliptic longitudes of the Sun and Moon differ by 180°).

once a month to mark the start of a new one

During meiosis, homologous chromosomes can exchange DNA in a process as shown in the diagram
below known as

Answers

The answer is: crossing over

1Which of the following animals is a primary consumer?

Answers

cant see the following animals

What is a type of cell that makes new bone tissue?
A. Osteoblast
B. Myosin
C. Actin
D. Cartilage

Answers

Answer:

I think the answer is going to be A. I'm not completly sure.

Explanation:


Can someone please help me on this plz I beg u :(

Answers

Answer:

Coleoptera is correct! Hope this helps.

ANSWER IS Coleoptera

10 points!!!

In a series circuit with three bulbs,
a.
there are many paths for the current to take.
b.
the remaining two bulbs are not affected if one bulb burns out.
c.
all of the bulbs become dimmer as more bulbs are added.
d.
a switch is never used.

Answers

Answer:

C

Explanation:

Because more bulbs are add the dimmer they get

If a star is small, it will likely last___ a large star.

for as long as

longer than

for less time than

Answers

Answer:

Longer then is the answerrrrr

Shawn explains that many studies have shown that directly spraying bees with fungicides doesn't harm them. Are those results consistent with what Shawn has discovered? Explain your answer in a few sentences.

Answers

Answer:

Yes.

Explanation:

Yes, the results will be consistent of spraying bees with fungicides because the fungicides affect the growth of fungus not the bees. fungicides  are the chemicals kills fungal growth while on the other hand, insecticides will kill the insects such as ants, bees etc. If the Shawn apply insecticide on the bees, it will kill the bees due to its effectiveness so that's why the results of the directly spraying bees with fungicides will always be consistent due to its ineffectiveness.

Explain how cellular respiration is important for the production of ATP build on aerobic vs anaerobic

Answers

Answer and Explanation:

ATP is the energy molecule of the organism, being necessary for all cellular processes. It is produced in both aerobic and anaerobic respiration, but the processes are different.

Aerobic respiration, ATP is produced by breaking down the glucose molecule found in the food we consume. This process occurs in all organisms that need the presence of oxygen to survive. However, this is a complex process that occurs with the help of several enzymes and co-enzymes that perform various oxidation reactions on the glucose molecule, transforming it into carbon dioxide, water and ATP.

Anaerobic respiration is also known as fermentation and occurs in all organisms that cannot survive in the presence of oxygen. This process also occurs with the help of enzymes and coezimas, where the glucose molecule is degraded until it becomes two molecules of pyruvate. During the pyruvate degradation reactions, an ADP molecule is released, which will later be added to a phosphate molecule that is free in the cytosol, becoming ATP.

Which of the following distinguishes the relationship between a taxon and taxonomy?
A taxon is an anomaly in the classification system known as taxonomy.

B taxon is a level of the classification system known as taxonomy.

C taxon is a specific trait in the classification system known as taxonomy.

D taxon is an unknown factor in the classification system known as taxonomy.​

Answers

Answer:

B taxon is a level of the classification system known as taxonomy.

Hope this helps!

Suggest reasons for the color patterns of the frog and its lack of color on the ventral surface.

Answers

Answer:

To save itself.

Explanation:

The color patterns of the frog and its lack of color on the ventral surface allows the frog to protect itself from their predators because the frog changes its colour and the predators are unable to see them. The color patterns of frogs and their lack of color on the ventral surface allow frogs to escape from their predators. If the frog does not change its colour, the predators will see them and the frog will be catch by its predators and feed on them so this is the reason that frog changes colour or the presence of colour patterns.

please fill out! desperately need very soon!!!!!!!!!!!!!!!!!!!

Answers

Answer:

nxm ZQM

Explanation:

XM AM

(WILL GIVE BRAINLIST)
3. The central nervous system is the _______________________ center of the body. It includes the brain and the spinal cord

Answers

Answer:

In my opinion it is the main control center of the body.

What is the purpose of rRNA?

A. to retrieve amino acids

B. to be a working copy of DNA

C. to assemble proteins

D. to replicate the genetic code in mitosis

Answers

Answer:

A

Explanation:

The primary function of rRNA is in protein synthesis – in binding to messenger RNA and transfer RNA to ensure that the codon sequence of the mRNA is translated accurately into amino acid sequence in proteins.

Elements such as The lungs exchange gas to maintain homeostasis. In the alveoli of the lungs, oxygen and carbon dioxide are exchanged. This exchange occurs between the lungs and blood vessels (capillaries). The transport of oxygen to the blood does not require energy. The membranes of the alveoli are thin and moist and allow gasses to dissolve and be transported to and from the blood. When we breathe, a high concentration of oxygen enters the lungs and moves to the blood. Based on this scenario, is the transport of oxygen a result of osmosis, diffusion, or active transport?

Answers

Answer:

oxygen are among the few simple molecules that can cross the cell membrane by diffusion. And 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. The oxygen molecules move, by diffusion, out of the capillaries and into the body cells. While oxygen moves from the capillaries and into body cells, carbon dioxide moves from the cells into the capillaries.

Explanation:

Answer:

This is Diffusion........... :)

Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides? *
A. forming a variety of gametes that will pass on hereditary information

B. disrupting meiosis and the synthesis of amino acids into a sequence

C. producing the inorganic molecules needed for normal cell growth

D. directing the synthesis of proteins necessary for proper cell function

Answers

D. directing the synthesis of proteins necessary for proper cell function

I hope this helps a little.

If a population is evolving, the allele frequency ________

Answers

If a population is evolving, the allele frequency will change.
Answer: Change

how can older rocks be found on top of younger rocks in a cross-section?​

Answers

Answer:

Thrust faults form where rocks are being compressed, usually by plate tectonic mechanisms. Thrust faults rip up older strata and pile it on top of younger rocks.

Explanation:

source from the internet

How does acid rain (deposition) form and travel to effect the environment?

Answers

Answer:

The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.

Explanation:


PLEASE HELP !! If a person with a mass of 50 kg
and a person with a mass of 109
kg both jumped off a cliff, which
one will hit the ground with more
force? Remember: Gravity causes
things to accelerate at 10 m/s 2

Answers

Answer:

109kg? would hit the ground with more force

Explanation:

Im not sure if this is right but think of it like going down a hill, if your riding a bike with your dad who is 150 pounds and your 90 pounds, he will go faster. Sorry I just took a guess

For each sequence of DNA is shown. Write the complementary RNA sequence underneath the letters, then use the codon chart to determine the amino acid sequence. DNA: ACA TTT CAG ACC GTG

Answers

Answer:

If youre doing the complementary RNA strand of DNA is would be for example

DNA: A T C G G

RNA: U A G C C

*remember that in RNA the A is complementary U instead of T*

so when you get that done you use every three letters of the *RNA* sequence and match it to the codon chart

Explanation:

i hope this helps!! btw can you help me with my rough draft i really need some help and i'll give you 30 0r more points for it

How do shale oil and tar sands compare to conventional
(regular) oil deposits?

Answers

Answer:

Oil shale is a form of sedimentary rock that contains kerogen, which is released as a petroleum-like liquid when the rock is heated. Tar sands are a combination of clay, sand, water and bitumen, which is a heavy hydrocarbon.

Additional info:

The term oil sands refers to a particular type of nonconventional oil deposit that is found throughout the world. Oil sands, sometimes referred to as tar sands, is a mixture of sand, clay, other minerals, water, and bitumen. The bitumen is a form of crude oil that can be separated out from the mixture.

The primary distinction between crude or conventional oil and shale oil is the way it collects. The oil in shale is typically found in smaller batches. As a result, shale oil often needs to be fractured so that the oil trapped within the shale can be recovered.

Answer:

please give me brainlist and follow

Explanation:

Oil shale is a form of sedimentary rock that contains kerogen, which is released as a petroleum-like liquid when the rock is heated. Tar sands are a combination of clay, sand, water and bitumen, which is a heavy hydrocarbon. Like the kerogen in oil shale, tar sands' bitumen can be upgraded to synthetic crude oil.

does having a lower than normal thyroid hormone level affect oxygen consumption ​

Answers

Answer:

yes

Explanation:

and hope this helps byee

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