Answer:
A. 8
Explanation:
The 2s subshell holds a maximum of 2 electrons, and the 2p subshell holds a maximum of 6 electrons. Which means that the second shell can hold a maximum of only 8 electrons (2+6 = 8)
A group of students decides to investigate the loss of chlorophyll in autumn leaves. They collect green leaves and leaves that have turned color from sugar maple, sweet gum, beech, and aspen trees. Each leaf is subjected to an analysis to determine how much chlorophyll is present. What would you advise the students about replication for this experiment?
The students would be advised to replicate their experiment because the findings won't be accepted until it is replicable.
What is an experiment?An experiment is a test conducted under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
According to this question, a group of students decides to investigate the loss of chlorophyll in autumn leaves. They collect green leaves and leaves that have turned color from sugar maple, sweet gum, beech, and aspen trees and subject them to analysis to determine their chlorophyll content.
However, it is important to replicate this experiment because it can only be accepted by scholarly societies if the findings are replicable.
Therefore, the students would be advised to replicate their experiment because the findings won't be accepted until it is replicable.
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If an antiport carrier moving solutes in opposite directions across a cell membrane without requiring energy, this is called
Answer: Countertransport
Explanation:
Cotransport is a type of active transport of substances through a biological membrane. It is characterized by the simultaneous transport of two or more substances, hence its name, and is common in small organic molecules, such as glucose or amino acids, especially in epithelia of absorption and secretion, such as the small intestine and renal tubules. The cotransport can be of two types, simporte or antiport.
Simporte: the two transported molecules move in the same direction, for example both are transported into the cell. Antiport: the two molecules move in the opposite direction, one towards the outside of the cell and the other towards the inside.In both cases, one of the substances moves in favor of its gradient and the other against it. In electrochemical gradients there is potential energy stored and when a substance moves in favor of its gradient this energy is released.
In contransport, the transmembrane protein responsible for co-transportation, is able to use the energy stored in the electrochemical gradient of a substance to move the other substance against its gradient. The electrochemical gradient from which the energy for transport comes is maintained by ATPases, which consume ATP. Since the co-transporter does not directly consume ATP, the co-transport is classified as secondary active transport, while the ATPases perform primary active transport. So, ATPases consume energy to create a gradient and then co-carriers use the energy from the gradient to transport another substance.
In the case of Countertransport, the cell transports two types of molecules in the opposite direction across the membrane. Countertransport is a type of antiport exchange. The key point regarding countertransport is that it transports ions or molecules in opposite directions. Thus, one molecule leaves the cell while the other enters at the same time through the membrane. In addition, this is a type of secondary active transport that uses electrochemical gradient to drive the movements (as it was explained before). Countertransport can mediate the exchange of the same solutes or different solutes. The sodium-calcium exchanger, the Na+ / H+ exchanger and the Cl- / bicarbonate exchanger are examples of countertransport.
help me if you can please and ty
Which pair includes rocks and sediments A atmosphere B biosphere C geo sphere D hydrophere
Someone plss help plss helppp plllsss
Will mark brainliest
Answer and Explanation:
An acid has a pH that is less than 7. A base has a pH that is greater than 7. Something that has a pH of 7 is neutral, but since it doesn't seem that the question is asking about neutral, you can ignore that for this problem.
Situation 1: Base
Situation 2: Acid
Situation 3: Acid
Situation 4: Base
Situation 5: Acid
Situation 6: Base
A. Water directly out of the tap has a pH of 7.2. When you add carbon dioxide (blow into the water), you get a pH of 5.1. This means that the addition of carbon dioxide makes water more acidic.
B. The most basic solution will have the highest pH. This means that it will be water with bleach added to it.
C. The most acidic solution will have the lowest pH. This means that it will be water with instant coffee.
Which monomer serves as the building block of glycogen, a polymer made up of many glucose molecules? Choose 1 answer: (Choice A) Amino acid (Choice B) Monosaccharide (Choice C) Nucleotide (Choice D) Steroid
The monosaccharide serves as the building block of glycogen, a polymer made up of many glucose molecules. So, the correct option is (B).
What is Polymer?A polymer is defined as a substance or material consisting of very large molecules known as macromolecules, which are made up of many repeating subunits. Due to their wide spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life.
During the process of polymerization, polymers are formed in which smaller units known as monomers are joined together with the help of covalent bonds. Polymers are of four types:
1. Natural
2. Synthetic
3. Addition
4. Condensation
In above given example, Monosaccharide which is glucose is the monomer which is joined together to from glycogen which is a polymer.
Thus, the monosaccharide serves as the building block of glycogen, a polymer made up of many glucose molecules. So, the correct option is (B).
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Which theory of plate movement relies on the weight of the subducting crust?
A. Slab-push
B. Slab-pull
C. Mantle convection
D. Hot plumes
Answer:
The answer is slab-pullExplanation:
Got it right on the quiz :))
Hydrogen (H), potassium (K), and sodium (Na) are all in the same______
A:Group
B:Period
So they have the same number of______
A:Electron shell
B:Valence
2 Ashley missed school the day the teacher discussed the hierarchical relationships. Explain to her your reasoning for organizing
this way
Answer:
i dont know how
Explanation:
sorry cant help
Mercury is a toxin that is of significant concern due to biomagnification. Explain how mercury found in an aquatic environment can accumulate in
biomagnification, and explain how limiting consumption of large predatory fish, such as swordfish, may be necessary for individuals trying to avoid high
mercury concentrations
Answer: Mercury has been well known as an environmental pollutant for several decades. As early as the 1950's it was established that emissions of mercury to the environment could have serious effects on human health. These early studies demonstrated that fish and other wildlife from various ecosystems commonly attain mercury levels of toxicological concern when directly affected by mercury-containing emissions from human-related activities. Human health concerns arise when fish and wildlife from these ecosystems are consumed by humans.
During the past decade, a new trend has emerged with regard to mercury pollution. Investigations initiated in the late 1980's in the northern-tier states of the U.S., Canada, and Nordic countries found that fish, mainly from nutrient-poor lakes and often in very remote areas, commonly have high levels of mercury. More recent fish sampling surveys in other regions of the U.S. have shown widespread mercury contamination in streams, wet-lands, reservoirs, and lakes. To date, 33 states have issued fish consumption advisories because of mercury contamination.
These continental to global scale occurrences of mercury contamination cannot be linked to individual emissions of mercury, but instead are due to widespread air pollution. When scientists measure mercury levels in air and surface water, however, the observed levels are extraordinarily low.
Explanation:
Mercury can accumulate in biological systems and then pass to humans after consumption (in this case, fish consumption).
What is bioaccumulation?Bioaccumulation can be defined as the process of accumulation of chemical nocive substances in biological systems.
Mercury is a toxic metal that bioaccumulates in life forms such as fish and then passes to humans, which is a serious threat to health.In conclusion, mercury can accumulate in biological systems and then pass to humans after consumption (e.g., fish consumption).
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URGENT --- ok so please - Define electronegativity - IN UR OWN WORDS SO PLS do not copy and -paste from web please phrase it in your own words that make sense (im in HS biology)
Answer:
Ok, so what electronegativity means is it measures the tendency of an atom to attract a shared pair of electrons. It is modified by both its atomic number and the distance at which its valence electrons equivalent from the charged nucleus.
Explanation:
hope u get a good grade ;)
Answer:
i did that same thing a while ago
Explanation:
Is rapid population significant true or false?
Answer:
No . Because rapid population increases global warming ,pollution, deforestation,crime etc. So, it is false.
How many amino acids must be obtained in the diet because they cannot be made by the body?
5
ΟΟΟΟ
Mark this and return
Save and Exit
Next
Submit
Answer:
Nine (9) amino acids must be obtained
in 1907, Duncan preformed a series experiments in which he attempted to measure the weight of a soul as it left a dying person in his experiment McDowell cool place a dying person on a scale and measure their weight immediately prior to the following death. McDowell determined the change and weighed approximately 21 grams for the experiments he concluded the soul exists and has mass what is the fundamental scientific flaw in his conclusions
Answer:
The flaw is that he is studying pseudoscience (fake science) and he did not repeat his experiments in any form of trials.
4. Monosaccharides are to polysaccharides as
are to
amino acids : proteins
phosphates: lipids
nucleic acids : nucleotides
glycerol : fatty acids
Answer:
C
Explanation:
C
Monosaccharides are to polysaccharides as are AMINO ACIDS to PROTEINS.
Polysaccharides are carbohydrates composed of many subunits called monosaccharides, which are linked together by glycosidic bonds.Proteins are biomolecules consisting of many subunits called amino acids, which are linked by peptide bonds.Lipids represent a broad class of organic molecules composed of a glycerol backbone that attaches to one or more fatty acids.Nucleic acids (either DNA or RNA) are biomolecules composed of long chains of nucleotides linked by phosphodiester bonds.In conclusion, monosaccharides are to polysaccharides as are AMINO ACIDS to PROTEINS.
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Reduction of competition for food and living space among species inhabiting the same geographical area is accomplished by
Answer:
Niche diversification.
Explanation:
It is niche diversification because it is an hypothesis that indicate that every species is most superior in competition in by making use of resources in the niche they occupy at equilibrium or balance.
Some species divide their niche resources into variation for the to exploit it.
Can an enzyme be recycled? Explain.
Answer:
Enzymes serve as catalysts to many biological processes, and so they are not used up in reactions and they may be recovered and reused. However, in a laboratory setting, reactions involving enzymes can leave the enzyme unrecoverable. This process makes the enzyme at once less reactive but more stable.
Suppose I am TASTE testing two types of energy drinks to see what people prefer. 1. What will the Idependent variable be ? 2. What will the Dependent variable be? 3 Will the data I collect be Qualitative, Quantitative or both?
Answer: 1. Energy drink
2. What people prefer to drink.
Explanation:
1.The independent variable can be referred to that variable that can be manipulated in an experiment. The energy drinks can be changed to see that what people prefer to drink.
2.The dependent variable can be referred to that variable which is the result of the experiment it is influenced by the independent variable. What people prefer to drink is the dependent variable.
3.The data being collected in this experiment will be quantitative. As we can calculate the response of people what they prefer to drink in numbers.
Why is sample size important?
Select the corre
A community wants to stop pollutants from its farm flelds from reaching the river. What should It do?
A. Use beneficial animals in the farm fields.
B. Use beneficial Insects in the farm fields.
C. Plant grass in the farm fields.
D. Plant trees in the farm fields.
E. Use buffer strips between the farm fields and the river.
A car drives with a constant speed of 28 miles per hour. How far can it travel in 2 3/4 hours?
All we need to do is multiply.
Note that 2 3/4 = 2.75
28 * 2.75 = 77 miles
Best of Luck!
Answer: 77
Explanation:
All you have to do is multiply 28 by 2 and 3/4
. Anytime you speculate about a problem and think of an answer based on what you see on TV or read on the Internet, you are forming a scientific theory. a. True b. False
Answer:
It's False.
Explanation:
Help I can’t find the answer!!
Answer:
When glycogen is synthesized in both the liver and muscle, all of the following are true EXCEPT Glucose enters the liver cell and is phosphorylated by hexokinase to become glucose-6-phosphate The isomerase, phosphoglucomutase, converts glucose-6-P to glucose-1-P
Explanation:
Thomson's contribution to the atomic theory was the
discovery that negatively-charged electrons were
embedded within a positively-charged "soup". Later
on Rutherford preformed the gold foil experiment
which altered Thomson's contribution. What were
the conclusions of Rutherford's Gold Foil
Experiment?
O The atom is made up of mostly empty space with a tiny,
dense, positively-charged nucleus.
O The atom is mostly empty space, with negative charge
concentrated at the center.
O The atom is mostly empty space, with positive charges
spread evenly across it.
O The atom is mostly empty space. No other conclusions
could be made.
Answer:
Just change thw words to numbers and you will get the answer you need!
Explanation:
what are the steps involved in the scientific method
the blank are the new substance produced in a chemical reaction
Answer:
A precipitate is a (blank) that forms from solution during a chemical change. In a (blank) change elements and/or compounds rearrange to form new substances. During an (blank) reaction, more energy is required to form the bonds in the (blank) than needed to break the bonds of the product are formed.
Explanation:
Some scientists believe Earth's orbit around the sun has changed contributing to global warming.
The process of photosynthesis
A.
involves the conversion of sugar molecules into energy.
B.
results in the absorption of carbon dioxide from the atmosphere.
C.
generates glucose using oxygen and water as reactants.
D.
generates carbon dioxide and releases it into the atmosphere.
Answer:
I think it's D because I've done this already
Answer:
b
Explanation:
Which guiding principle for forensic scientists states that a forensic scientist should be committed to life-long learning?
Answer:
Competency and proficiency
Explana
Can someone help me with labels???? If they are correct ill mark u as the best answer
Answer:
1. Nucleolus- inside of the nucleus, makes ribosomes
2. Rough Endoplasmic Rectilium(Rough ER)- synthesizes proteins, has sibosomes
3. Smooth Endoplasmic Rectilium(Smooth ER)- does not have ribosomes, produces protein and lipid(fat)
4. Vacuole- stores water, sugar, and pigment
5. Chloroplast- photosynthesis happens here
6. Cell Wall- provides support
7. Membrane- controls what goes in and out of the cell
8. Mitochondria- power house of the cell, produces power from chemical energy
9. Golgi Bodies- Prepares proteins and lipids for the inside an outside of the cell
10. Ribosome(the little black dots)- attaches to Rough ER, transfer RNA to protein(protein synthesis),