the answer should be option A
One scientist kept 20 grams of a radioactive material in a container. What will be the
mass of the radioactive material left in the container after 2 half lives?
40 grams
4 grams
10 grams
5 grams
After one half-life, there would be 10 g of the material left.
After two half-lives, there will be 5 g of the material left.
Therefore, 5 grams is the correct answer.
What is the unit of grams?The basic unit of mass or weight in the metric system is the gram. The most frequently used units of mass or weight used in the Canadian food industry are the gram and kilogram. Some of the types of grams are:-
Unit Abbreviation Mass (Weight)
kilogram kg 1000 grams
hectogram hg 100 grams
decagram dag 10 grams
gram g 1 gram
Therefore, last option is the correct answer.
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Relate plant structure and function to the process of photosynthesis and respiration
Answer: Photosynthesis is a process through which green plants prepare their food by using carbon dioxide and water as reactants in the presence of sunlight energy. The food produced in the form of carbohydrate. Respiration is the process in which the biochemical oxidation of the food occurs.
Explanation:
The plant structures like leaves are specialized for performing the process of photosynthesis. These leaves have chlorophyll pigment which traps the light energy from sun which is required for splitting the molecules of water in the process of photosynthesis. Respiration occurs through stomata in leaves. But it also occurs in stems through lenticels and in specialized roots called pneumatophores via tiny pores.
Outline the effect of the following mutations:
TAG-> TAT
TAC-> TCC
Answer:
TAG-> TAT >> sense mutation
TAC-> TCC >> missense mutation
Explanation:
A sense mutation is a type of mutation that changes a stop codon into a sense codon, thus producing an elongated protein. The TAG codon (UAG in the RNA) is a stop codon, while TAT (UAU) encodes for tyrosine, thereby TAG-> TAT is a sense mutation. On the other hand, a missense mutation is a type of point mutation where a single nucleotide change generates a new codon which encodes a different amino acid. In this case, the TAC codon (UAC) encodes for tyrosine, while TCC (UCC) codon encodes for serine, and therefore TAC-> TCC is a missense mutation (Tyr to Ser mutation).
6. Parts per million is used to express the A) atomic mass of an element B) concentration of a solution C) volume of a substance D) rate of heat transfer A B
An example of chemical digestion is the breakdown of
into
Select one:
O a. fatty acids; cholesterol
O b. polysaccharides; amino acids
c. amino acids; proteins
d. proteins; nucleotides
nucleic acids; nucleotides
e.
Answer:
B
Explanation:
An example of chemical digestion is the breakdown of nucleic acids, or nucleotides, which is in option e. Chemical digestion involves the breakdown of large, complex molecules into smaller ones, so here the correct option is option e.
Chemical digestion is a process that occurs in the digestive system, specifically in the stomach and small intestine, where complex macromolecules are broken down into smaller, simpler units through chemical reactions facilitated by digestive enzymes. Proteins are large macromolecules made up of chains of amino acids. Hence, here the correct option is option e.
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Given the present condition of the country and based on your own observation,would you consider the philippines an effective,weak, or failed state?why?
Answer:
Weak.
Explanation:
The Philippines is a weak and financially poor country due to its current condition. The main reason for its weak state is due to the poor economy that is responsible for its weak state. The environment is not favourable for the investors and business due to costly facilities that prevent the investors to invest in the country. If the environment for the investor is good so the investors come to the country and contributes in the economy which make the financial situation of the country better.
Need help!!! asap due in a hour
what is the strongest known poison that is undetectable completely
Answer:
The strongest known poision that is undectable completely are:
Arsenic,Cyanide, Thallium
Which is not a cost for organisms that sexually reproduce?
Answer:
Identical shape and structure.
Explanation:
Those organisms that reproduce sexually have high variations and differences between the parent and its offspring. They are not identical to each other because the offspring gains half characteristics from male parent and half from the female parent making it different from its parent. Identical feature is present in the organisms that reproduce through asexually means from only one parent so the identical shape and structure is not the cost of sexual reproduction.
Plz help me I am timed!!
Answer:
galaxy
Explanation:
Answer:
D.) galaxy
Explanation:
hopes this helps!!!
which health issue is associated with exposure to indoor air pollution
Answer:
irritation of the eyes,nose and throat;headaches,dizziness,fatigue;respiratory diseases,heart disease,and cancer.
Explanation:
(hope this helps)
Answer:dddddddddddddddddddddddddddddd
Explanation:
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
what are four characteristics of viral genomes that may vary among viruses?
Answer:
l
Explanation:
Answer:
the answers are nucleic acid type, size, complexity, and the information transfer pathways.
Explanation:
Hope this helps
2. 2,3-bisphosphoglycerate is an allosteric inhibitor of oxygen binding to hemoglobin. a. Acclimatization to high altitude involves numerous physiological and biochemical changes, including an increase in the concentration of 2,3-bisphosphoglycerate in red blood cells. Explain why the 2,3 bisphosphoglycerate concentration increases at high altitude. b. The 2,3-bisphosphoglycerate concentration in maternal red blood cells also increases during pregnancy. Why
Answer:
A. At high altitude, increase in 2,3-bisphosphoglycerate (BPG) ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Explanation:
Atmospheric pressure is low at high altitudes with the result that oxygen molecules in the air are further apart. The reduction of oxygen availability in the air thus reduces the oxygen saturation in the blood and brain. Oxygen saturation levels refer to the extent hemoglobin is bound or saturated to oxygen.
2,3-bisphosphoglycerate (BPG) is an allosteric inhibitor of oxygen binding to hemoglobin. At low concentration, oxygen delivery to tissues is low while at hgh concentrations, oxygen delivery to tissues increases. It ensures that oxygen bound to hemoglobin in blood from the lungs is delivered to the tissues. Thus, at high altitude, increase in BPG ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. During pregnancy, there is a significant increase in oxygen demand. This is due to a 15% increase in the metabolic rate and a 20% increased consumption of oxygen as the developing fetus obtains nutrients and oxygen from the mother's blood.
An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Name the 4 bases found in DNA.
Answer:
thyminene, T
adenine, A
guanine, G
cytosine, C
Explanation:
Answer:
Adenine, thymine, cytosine and guanine
Explanation:
Which phase comes NEXT?
Answer:
telophase is the correct answer
Explanation:
sorry if its incorrect.
Which of the following is composed of monosaccharide monomer units? A.nucleic acids B. proteins C.carbohydrates D. lipids
No LINKS PlEASE
Answer:
c
Explanation:
Monosaccharides are the building blocks of disaccharides (such as sucrose and lactose) and polysaccharides (such as cellulose and starch).
Higher Classifications: Carbohydrate; Sugar
The correct option is (c) carbohydrates .
The monomer units for constructing DNA and RNA are nucleotide bases, whereas amino acids, sugar residues, fatty acids, and acetyl groups are the monomers for proteins, carbohydrates, and lipids, respectively.Large polymers made of hundreds of monosaccharide monomers are known as polysaccharides, sometimes known as glycans. Polysaccharides, in contrast to mono- and disaccharides, are not sweet, and they typically are not soluble in water. The monomeric units of polysaccharides are joined by glycoside, linkages, just like disaccharides.What units are carbohydrates made up of?In the case of carbohydrates, the small repeating units are called monosaccharides. Carbohydrates contain only carbon, hydrogen, and oxygen.Learn more about monosaccharide monomer units brainly.com/question/4939229
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PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
D
Explanation:
Since algae is the start or the foundation of the food chain, this would mean that animals that eat the algae will be more commonly found here. And where their are consumers, predators are to follow.
Hope this helps :)
Answer:
D
Explanation:
A dry cement road is a diffuse reflector. When it rains, the water fills in all the little holes and cracks in the cement road and it becomes a smooth regular reflector. At night, when you are depending on the light from your headlights to show you the lines on the road, a wet road becomes much darker and it is more difficult to see the lines. Explain why this occurs.
Answer:
Because of reflection of light away from the marking
Explanation:
It is because the light from a vehicle falls on the road and its markings which then gets illuminated as light is reflected only in one direction.
But in case when the road is wet, light of vehicle reflects in different directions away from the markings on the road and hence they do not illuminate.
The reason why the given phenomenon about the effect of light and while driving is; Due to total internal reflection of light away from the marking.
What is reflection of light?Reflection of light is simply defined as the phenomenon where light is sent back after being incident on a surface.
Now, in this question, the light from a vehicle falls on the road and its markings and then gets illuminated as light is reflected only in one direction.
However, when the road is wet, the headlight of vehicles tend to reflect away from the markings on the road in different directions which make them not to illuminate.
Thus, we conclude that reason why the given phenomenon about the effect of light and water on driving is due to total internal reflection of light away from the marking.
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50 POINTS 4. The age of the Canyon Diablo meteorite was determined by
A) carbon-14
B) uranium-235
C) hydrogen-3
D) potassium-40
Answer:
The answer is uranium have an awesome day!
13-22 Aquaculturists (people who farm marine resources, typically in semi-enclosed areas off the coast) have development methods of growing various invertebrates as food sources, such as clams, mussels, and oysters. Other widely consumed species, such as squid, have never been successfully grown in controlled marine environments, and so they remain wild caught. Why
Answer: There are several problems associated with handling of the squid.
Explanation:
Squid is a deep sea creature which becomes enormously big in size and difficult in handling in artificial water body or aquaculture.
It consumes and requires huge amount of food in the pre-larval stages typically phytoplankton and it becomes difficult to provide such food to them.
The maintenance of temperature, and salinity for the squid in aquaculture is difficult.
The sticky arms of the squid adhere to the surface of tub or human handler making it difficult to handle and can be poisonous to humans too.
a heterozygous chicken with black feathers mates with a white chicken whats the possiblility the offspring will be black
Answer:
if black feathers are the recessive gene than there is a 0% of black feathers and if its dominate than there is a 100% chance of black feathers
Explanation:
b b
w bw bw
w bw bw
Which list shows a possible order in which energy moves through an ecosystem?
1 herbivore, carnivore, Sun, producer, decomposer
2 Sun, producer, herbivore, carnivore, decomposer
3 Sun, producer, predator, consumer, decomposer
4 producer, Sun, carnivore, herbivore, decomposer
Answer:
2. Sun, producer, herbivore, carnivore, decomposer
Which statement provides the best explanation of the difference in biomass of organisms found at each trophic level?
Answer: organisms at higher tropic levels have less energy available to them in organisms at lower trophic levels
Explanation:
Give me your best shot of explaining how this occurred. This is different from the twins as this time both parents have darker skin, some of the offspring share that same skin color and some are albino
What part of the plant produces fruit and seeds?
Stem
Leaves
Stamen
Pistil
Answer:
pistol
Explanat oops ion:
pew pew
The part of the plant that produces fruit and seeds is the pistil. The Pistil is the ovule producing part of a flower, where a mature ovary is a fruit, and the mature ovule is a seed.
What do you mean by Seeds?Seeds may be defined as the unit of reproduction of a flowering plant, capable of developing into another such plant.
Flowers are the parts of the plant that are responsible for the production of fruits and seeds. The part of the flower that becomes a fruit is called the ovary.
Therefore, the part of the plant that produces fruit and seeds is the pistil.
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Which of the following is not an argument in favor of aquaculture?
A. Competition with fishermen
B. Reduction in seafood trade deficit
C. Job creation
D. Revenue generation
Answer: A. Competition with fisherman
Explanation:
I just took this test and also process of elimination its the only one that makes sense. :)
Answer:
Its A.
Explanation:
just took the test
Some of the largest, and most beautiful, natural crystals of
can be found in the Naica mine.
a) Gypsum
b) Diamond
C) Limestone
d) Quartz
Answer: c)limestone
Explanation:
What is the total amount of carbon removed from the atmosphere each year by the ocean and land plants, as shown by the arrows? (from carbon cycle gizmo)
Answer:
Either carbon got here by diffusing from the atmosphere, by decomposing marine life, or from circulating water from the deep ocean.
The ocean absorbs more carbon dioxide from the atmosphere than the land does.
The surface ocean takes in approximately 90 Gigatons of carbon per year.
Your welcome!
Explanation:
Which of the following is correct regarding expiration?
diaphragm relaxes, volume increases, pressure decreases and air moves into the
lungs
diaphragm relaxes, volume decreases pressure increases and air moves out of
the lungs
diaphragm relaxes, volume decreases, pressure decreases and air moves out of
the lungs
diaphragm relaxes, volume decreases, pressure decreases and air moves into the
lungs
sley
diaphragm relaxes, volume increases, pressure increases and air moves into the
lungs
diaphragm relaxes, volume increases, pressure decreases and air moves out of
the lungs
Which of the following tests are used to diagnose the presence of HIV? pap smears Western Blot & ELISA Eastern Blot & HISA Pregnancy tests
Answer:
ELISA Eastern Blot
Explanation: