cockroaches are exposed to a pesticide, after 3 hours 95% of the insects are dead. what is the independent and dependent variable?
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
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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Study these diagrams. The dots represent valence electrons orbiting the nucleus of an atom. Which diagram shows the valence electron pattern for a carbon atom? Four options A, B, C, and D showing different atomic structures with a nucleus at the center and valence electrons in circular path
Answer:
The image having four outermost (valence) electrons and a nucleus at the center
Explanation:
Even though the images were not displayed in the question, but we know that carbon is a member of group 14 in the periodic table.
Every member of this group possess four electrons on their outermost or valence shell in addition to the nucleus at the center of the atom.
Hence the structure having four outermost electrons and a nucleus represents carbon atom.
The public is not yet able to purchase cars powered by hydrogen fuel cells because engineers have to determine how the cars perform based on which scenario? on racetracks in real-world conditions in flooded environments on closed courses
Answer:
B - In real world conditions
Makes the most sense.....
Answer:
the answer is b
Explanation:
it's on edge just did it
UwU hope this helps yall
The major role of carbohydrates in the human diet is to
a.
form the membranes that surround mitochondria
b.
act as a catalyst for cellular reactions
C.
supply energy for the body
d.
provide building blocks for amino acids
Answer:
major role of carbohydrate in our is to supply energy for the body
Carbohydrates are sugar molecules, which are one of the primary nutrients required by the body.
The correct answer is:
Option C. Supply energy for the body
The role of carbohydrates are:
1. Carbohydrates are the primary source of energy in the body. The carbohydrates exist in the form of sugars, starch, and dietary fibers.
2. Carbohydrates are made up of monomers known as monosaccharides. Generally, glucose and fructose are the monomers of carbohydrates.
3. Beans, legumes, whole-grain products, and potatoes are good sources of carbohydrates in a healthy diet.
Thus, the correct answer is Option C.
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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 pair includes rocks and sediments A atmosphere B biosphere C geo sphere D hydrophere
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:
What three components make up a nucleotide?
Answer:
D
Explanation:
Phosphate, Pntose Sugar(deoxyribose) nitrogenous base
what are the different types of experiment
EASY
There are three types of experiments you need to know:
Lab Experiment. Lab Experiment. A laboratory experiment is an experiment conducted under highly controlled conditions (not necessarily a laboratory), where accurate measurements are possible. ...
Field Experiment. Field Experiment. ...
Natural Experiment. Natural Experiment.
Beaks in African black-bellied seedcracker finches are small or large, but not intermediate in size. This is an example of
Answer:
disruptive selection
Explanation:
Disruptive selection may be defined as a type of a natural selection which selects against some average individual in a given population. These makeup of such a type of the population shows the phenotypes of both the extremes of characteristics but they have very few individuals in the middle.
Disruptive selection is also known as diversifying selection.
In the given context, the beaks of an African seedcracker finches may be small or may be large but they are not of the intermediate size. Such a selection is known as disruptive selection in species.
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:
The___is the male sex cell. It is produced in the ___. The test are held outside the body in a bag of skin called ___. This keeps the sperm at the right ___. The sperm travel up the ___where liquid are added from the ___ glands. The mixture is call ___. The semen flow out of the ___ through a tube called ___.
Answer: gametes, testes, scrotum, temperature, deferent duct, ejaculatory, semen, prostate, urthera
Explanation:
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.
Fireworks use chemicals that can easily catch fire. What property of matter is
this?
A. Tendency to dissolve
B. Flammability
C. Ability to rust
D. Ability to tarnish
Answer: B. Flammability i think
Explanation:
Physical properties cannot separate a into the elements it contains
Answer:
a compound
Explanation:
Answer:
a compound
Explanation:
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.
Control of glands and the muscles of internal organs is a function of the __ nervous system
A. parasympathetic
B. somatic
C. peripheral
D. autonomic
Answer:
autonomic
Explanation:
edg 2020
Control of glands and the muscles of internal organs is a function of the autonomic nervous system.
What is autonomic nervous system?The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal. It contains three anatomically distinct divisions: sympathetic, parasympathetic, and enteric.
The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS) contain both afferent and efferent fibers that provide sensory input and motor output, respectively, to the central nervous system (CNS).
Activation of the SNS leads to a state of overall elevated activity and attention: the “fight or flight” response. In this process, blood pressure and heart rate increase, glycogenolysis ensues, gastrointestinal peristalsis ceases, etc.
Therefore, Control of glands and the muscles of internal organs is a function of the autonomic nervous system.
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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.
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
HELP BRAINLY AND FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Which section develops the idea that each species of pine tree is unique? A. Types of Pines B. White Pine C. Identifying Trees D. Pines
Answer:
A. Types of Pines
A sample of food is dehydrated, which kills all of the bacteria. However, in a few days, bacteria-free water is added to the food in a bacteria-free environment. Nevertheless, microscopic investigations indicate that bacteria are in the food. How did the bacteria get there?
Explanation:
well some bacteria are protected by a special coat outside their body which prevents any water loss from the bacteria. Such bacteria can then reproduce after conditions return to normal.
When a sample of food is dehydrated and making it bacteria-free, but in a few days bacteria are found in the food, it shows, bacteria which are there were in the food as endospores.
What are endospores?Endospores are the alternate stage of bacteria, which is the dormant stage, genus Bacillus, and the genus Clostridium, are examples of bacteria that make endospores.
These endospores are resistant to physical and chemical treatments, so this makes it easier for bacteria to survive in stressful conditions. It is a major threat to the food industry which provide heat treatment to the bacteria but they show resistance due to spore formation.
Therefore, when a sample of food is dehydrated to kill all of the bacteria in the food, but microscopic investigations indicate that bacteria are in the food, it is due to endospores.
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Which guiding principle for forensic scientists states that a forensic scientist should be committed to life-long learning?
Answer:
Competency and proficiency
Explana
2. If you examine the number of total injuries per cat from 26 stories fallen, what trend do you
spot?
Answer:
Hewo Hooman Being, Here's ur answer
Explanation:
This seems likely enough. But it should be noted that the average number of injuries of the cats brought in having fallen from 7-32 stories is still less than the average number of injuries, per cat, brought in having fallen under that height.
Bye-bye Hooman ^^
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:
2. Which one of the following is a reasonable measurement for the height of a
coconut palm tree?
a. 250 m
b. 25 m
C. 2.5 m
d. 0.25 m
Is rapid population significant true or false?
Answer:
No . Because rapid population increases global warming ,pollution, deforestation,crime etc. So, it is false.
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:
Explain how zooxanthellae have a symbiotic relationship with coral.
Answer:
Zooxanthellae and coral have a mutualistic, symbiotic relationship. Coral obtains oxygen and organic products from the algae that live within them. These algae also help the coral remove waste. The zooxanthellae obtains needed carbon dioxide and needed nutrients from the coral. The coral also provides the zooxanthellae with a protected habitat. Because both organisms derive a benefit from their relationship, it is considered mutualistic.
A symbiotic interaction benefits both the species. Corals and zooxanthellae shows a symbiotic relationship where zooxanthellae produce oxygen and corals perform photosynthesis.
What is Symbiotic relationship?Symbiosis is a type of species interaction, it is any type of a close and long-term biological interaction which is between the two different biological organisms. Symbiotic relationships are mutualistic, commensalistic, or parasitic type. The organisms, are termed as symbiont.
The corals and the special cells of zooxanthellae have a mutualistic relationship. The corals provide the zooxanthellae with a protected surrounding environment and the compounds which they need for the process of photosynthesis. In return, the zooxanthellae produce oxygen for respiration and helps the coral species to remove waste materials.
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