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Related Questions
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The table below shows the half-life of an element:
Half-Life DataElement Half-Life
Uranium-235 700 million years
Scientists have found that the Uranium-235 content of an unknown prehistoric sample was reduced to one-fourth. What best describes the identity of the sample?
A stone artifact that formed 700 million years ago
A mammoth that died 1,400 million years ago
A cliff that formed 1,400 million years ago
A plant that died 700 million years ago
Answers
Answer:
Half-Life is the time for a substance (U-235 in this case) to decay to 1/2 its original mass.
Since the problem is asking for the time for U-235 to decay to 1/2 its original mass (100 grams to 50 grams) then the decay time is 1 half-life, or 700 million years.
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Answer:
A stone artifact that formed 700 million years ago
Explanation:
By the details it is said that Uranium-235 was 700 million years old, so it would make sense for it to be stone since it is stone like.
Offsprings take on traits of their parents from?
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Answer:
Explanation:
Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents. ... The study of heredity in biology is genetics.
What are some random things that you’re too anxious to ask??
Answers
Answer: Um for me I don't really have any questions that i am too anxious to ask but some people are too anxious to ask about "why do I bite my nails," or " when people have anger problems they might ask why are so mad...
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Answer:
Some things im to anxious to ask some people is some really weird stuff. Why? Because me and the guys do dares and really dumb stuff. Sometimes it gives me the chills and sometimes, I might not even do it. But if I don't do it, I would get punished and do really weird things. Like ding dong ditch, jumping into horse poop, etc.
Explanation:
Hydrogen and oxygen gain and lose electrons when forming the molecule water
true
false
Answers
d electroniCred ca da este hidrogenul si oxigenul isi pier
What is A layer that covers a cell's surface and surrounds the cell. It acts as a barrier between inside of
cell and cell's environment.
Answers
Answer:
membrane
Explanation:
explain the steps that occur when precipitation is forming :)
Answers
Answer:
Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth. If a cloud is colder, like it would be at higher altitudes, the water droplets may freeze to form ice.
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Explanation:
why would a bacterium undergo binary fission
Answers
Answer:
To reproduce quickly in order to increase chances of survival in a habitat.
Explanation:
Thats like bacteria and mushrooms right? If yes, then think about it this way. If a tree fell and mushrooms needed to grow about on top of them.
how are fungi organized to stay alive?
Answers
Fungi are eukaryotes and have a complex cellular organization. As eukaryotes, fungal cells contain a membrane-bound nucleus where the DNA is wrapped around histone proteins. Fungal cells also contain mitochondria and a complex system of internal membranes, including the endoplasmic reticulum and Golgi apparatus
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Answer/Explanation:
Somewhat like animals, Fungi need oxygen and eat dead organisms in order to survive. A fungus may look like a plant, however it gets energy from living of dead plants and sometimes other fungi. Fungi need a moist area to live with plenty of oxygen making rotted out trees a perfect place to grow.
Fungi are eukaryotes and have a complex cellular organization. As the fellow answerer above said, it has mitochondria and cell membranes that are artistically arranged. Unlike plants, they do not have chloroplasts nor chlorophyll.
What is the main role of the sugar deoxyribose
Answers
Answer:
Deoxyribose is the five-carbon sugar molecule that helps form the phosphate backbone of DNA molecules. DNA, or deoxyribonucleic acid is a polymer formed of many nucleic acids. Together, many amino acids form functional proteins, which can aid the cell in speeding up certain reactions.
Explanation:
Answer:
it helps forms the phosphate of a DNA molecule
What are the overall results of mitosis compared to those of meiosis?
A.Mitosis produces two genetically identical haploid cells, while meiosis produces four genetically
different diploid cells.
B.Mitosis produces two genetically different diploid cells, while meiosis produces four genetically
identical haploid cells.
O Mitosis produces two genetically identical diploid cells, while meiosis produces four genetically
different haploid cells.
O Mitosis produces four genetically identical diploid cells, while meiosis only produces two
genetically different haploid cells.
Answers
Answer:
C
Explanation:
Meiosis create four genetically different haploid cells (this cells are gametes or sex cells)
I need hlp pls offering 6 points for this dont spam or i report
Answers
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Name an abnormal mass of cells that may be cancerous.
aCorn
b Pimple
C Mole
d Tumor
Answers
Hope this helps
What is the carbon-based product of glycolysis?
Answers
Answer:
The carbon-based product of glycolysis is pyruvate. :)
is a giant panda a primate
Answers
Answer:
No... it's a mammal
Explanation:
primates are monkeys
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If Jethro returns to the dark movie theater to retrieve his purple jacket he would be using which property of perception?
a) Color constancy
b) Brightness constancy
c) Depth perception
d) Gestalt theory
Answers
Why is gene expression regulated?
Answers
Answer:
Often, one gene regulator controls another, and so on, in a gene regulatory network. Gene regulation is essential for viruses, prokaryotes and eukaryotes as it increases the versatility and adaptability of an organism by allowing the cell to express protein when needed.
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Which of these components are found in the cells of all living organisms?
Pls help
Answers
The components that are found in the cells of all living organisms from the available options are Cytosine and Guanine.
All living cells contain important biomolecules such as lipids, proteins, nucleic acids, etc.
Nucleic acids are made of 3 major components:
pentose sugarsphosphate groupsnitrogenous basesThe nitrogenous bases could be:
purines: such as Adenine and Guaninepyrimidines: such as Cytosine and Thymine or UracilThus, by all means, no living organisms can do without possessing Cytosine and Guanine because all living organisms have nucleic acids.
More on nucleic acids can be found here: https://brainly.com/question/11737667
Answer:
C
Explanation:
If macro molecules are known as polymers why is each subunit known as a monomer?
Answers
What kinds of wildlife do you want to know more about? Why?
Answers
Why : because it’s so much that I don’t know and would like to learn
Which category includes the terms carbon dioxide, methane, nitrous oxide, and CFCs?
solar radiation
systems
textures
greenhouse gases
Answers
Answer: greenhouse gases
Explanation:
edge 2020
Answer:
greenhouse gases
Explanation:
i got it right in the quiz Ed 2021
. What dam that is still under construction will replace the current tallest dam?
Answers
Answer:
Oroville dam
Explanation:
The process of combustion, or burning, is similar to the chemical processes that release energy in cells. Wood burns at a very high temperature,
about 600°C. Which two statements explain how the human body is able to obtain energy without becoming too hot?
A. A large percentage of the cell is protein, which prevents rapid combustion.
B В
The breakdown-of glucose occurs in many small steps.
D
C. Low-temperature breakdown of glucose is enabled by enzymes that catalyze specific reactions.
D
Both fuel and ample oxygen are required for fire, oxygen concentration is too low in the body to allow combustion.
Answers
Answer:
The breakdown of glucose occurs in many small steps.
and
-Low-temperature breakdown of glucose is enabled by enzymes that catalyze specific reactions.
Explanation:
Statements that explain how the human body is able to obtain energy without becoming too hot are :
B>breakdown of glucose occurs in many small steps.
C>Low-temperature breakdown of glucose is done by enzymes that catalyze specific reactions.
What is the importance of glucose?Series of reactions that remove energy from glucose by splitting it into two or three carbon molecules (pyruvates) is known as Glycolysis.
Glucose is the main energy source for cellular metabolism. Human beings derive energy from three classes of fuel molecules, namely carbohydrates, lipids, and proteins. The potential chemical energy is transformed into other forms such as thermal or kinetic.
Glucose is absorbed by stomach and small intestines absorb and then released into the bloodstream. Once they reach the bloodstream, then glucose can be used immediately for energy or stored, to be used afterwards. Human bodies require insulin to use or store glucose for energy.
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Where do plants get the nitrogen they need to create amino acids and DNA?
A. Plants get their nitrogen from nitrogen gas (N2), which moves into leaves through holes called stomata.
B. Plants take up nitrates (NO3-) from the soil and convert them into ammonia (NH3).
C. Nitrogen-fixing bacteria convert nitrogen gas (N2) into ammonia (NH3), and plants take up some of the ammonia (NH3) through their roots.
D. Both B and C are correct.
E. A, B, and C are all correct.
Answers
Answer: It is D because they get it from soil and the gas
Plants get the nitrogen they need to create amino acids and DNA - option D. Option B and option C are correct.
Plants get nitrogen which is essential to form amino acid and nucleic acid that is DNA. Plants can not get the nitrogen gas directly from the air therefore, the process called nitrogen fixation takes place.
In nitrogen fixation, atmospheric nitrogen is converted to nitrates and ammonia with the help of nitrogen-fixing bacteria.Lightning and rainstorm also assist in the fixation process.plants take up nitrate from the soil and convert them into ammoniaNitrogen gas is converted into ammonia (NH3) by bacteria, and plants take up some of the ammonia (NH3) through their roots to the shoot via the xylem.Thus, the correct answer is - option D. both B and C are correct.
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Describe the process of digestion in written form.
Answers
Mouth. To more easily absorb different foods, your saliva helps break down what you're eating and turn it into chemicals called enzymes.
Esophagus
Stomach
Small Intestine
Large Intestine, Colon, Rectum and Anus.
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion like the tongue, salivary glands, pancreas, liver, and gallbladder.the Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.
Our body needs food to provide it with energy, vitamins, and minerals. However, in order use food, we must first break it down into substances that the various organs and cells in our body can use. This is the job of our digestive system. The digestive system acts in stages to digest our food. Each stage is important and prepares the food for the next stage. The entire length of our digestive system is around 20 to 30 feet! Here are the major stages of the digestive system:
1. Chewing - Chewing is the first stage of the digestive system. When you chew your food it breaks up big pieces into little pieces that are easier to digest and swallow. Also, your saliva is more than just water. It has special enzymes in it that start to break down starchy food (potatoes, bread) while you chew.
2. Swallowing - Swallowing may seem like a simple process to us. It just sort of happens. But food doesn't just fall down our throats into our stomach. First, our tongue helps to push food into the back of our throat. Then there are special throat muscles that force the food down into a long tube that leads to our stomach, called the esophagus. The food doesn't just fall down the pipe, muscles push the food along until it gets to our stomach. At the same time all this is going on, a flap blocks off our windpipe making sure food doesn't go the wrong way. We call this "going down the wrong pipe" and it can make us choke. This flap is called the epiglottis and, fortunately for us, it works automatically.
3. Stomach - The next stage is the stomach. Food hangs out in the stomach for around four hours. While the food sits there, more enzymes go to work on it, breaking down things like proteins that our bodies can use. The stomach kills a lot of bad bacteria as well, so we don't get sick. 4. Small Intestine - The first part of the small intestine works with juices from the liver and pancreas to continue to break down our food. The second part is where the food gets absorbed from the intestine and into our body through the blood.
5. Large Intestine - The last stage is the large intestine. Any food that the body doesn't need or can't use is sent to the large intestine and later leaves the body as waste.
6.The Liver and Pancreas The liver and pancreas do a lot to help the digestive system along. Both work with the small intestine. The liver provides bile (stored in the gall bladder) that helps break up fat into smaller bits. The pancreas provides additional enzymes to help digest all sorts of food. The liver also processes the digested food from your blood before it gets sent to various places in your body to be used.
what are the organelles inside an osteocyte?
Answers
Answer:A mature osteocyte contains a single nucleus that is located toward the vascular side and has one or two nucleoli and a membrane. The cell also exhibits a reduced size endoplasmic reticulum, Golgi apparatus and mitochondria, and cell processes that radiate towards the mineralizing matrix.
Explanation:
Answer: A osteocyte contains a single nucleus that is located toward the vascular side. It has one or two nucleoli, and a membrane. The cell also exhibits a reduced size endoplasmic reticulum, and cell processes that radiate towards the mineralizing matrix.
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what is science why is it so important
Answers
Answer:
Science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards. Finding a cure for cancer and a clean form of energy are just two topical examples. ... Education could become the most important application of science in the next decades.
Explanation:
Where does stage two of cellular respiration take place?
Mitochondria
Cytoplasm
Chloroplast
Nucleus
Answers
Answer:
A, Mitochondria
Explanation:
Why do human practices depend upon and benefit from water?
Why is water important to our planet?
Answers
Answer:
Water us important to out planet because almost every animal and plant needs water to survive.
Explanation:
Water has been the most crucial molecule that supports life on earth. It is a most important solvent that makes up the majority of living organisms and is involved in cellular activities.
What is the importance of water?Water has been defined as the most crucial molecule that supports and benefits the living organism. They are the abiotic factors that all the biotic factors depend on for their growth and development.
All the activities involved with survival have been dependent on water to sustain all the living functions and reactions. It is important for the planet as it is involved in all spheres and biogeochemical cycles. It is the elixir that carries life forward.
Therefore, water is the most important for humans, other organisms, and the planet.
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A mutation may be passed along to human offspring
Answers
Answer:
true
Explanation:
Answer:
B) Through meiosis only
Explanation:
A. is incorrect as mitosis only is responsible for your own body, not the genes of an offspring.
C. is incorrect as mitosis cannot affect the offspring
D. is incorrect as meiosis is responsible for the process of offspring (gametes) if there is something wrong with the gametes during the process, the offspring would most likely be affected.
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What is the main source of energy for weather everywhere on Earth?
A. Wind
B. Gravity
C. Sun
D. Precipitation
Answers
Answer:
C= sun
Explanation:
The Sun is the primary source of energy for Earth's climate system is the first of seven Essential Principles of Climate Sciences.