Answer:
The sample size is too small.
Explanation:
The process of elimination helped me find this answer.
It is possible to keep the conditions the same.
there are only 2 plants and one control, that's obviously not a lot.
and controls can be used on more than studying animals.
When using the scientific method you can use as many test subjects as you can so it can help you confirm. two plants are not a lot.
I've also had a teacher confirm that this is the correct answer.
edge 2020
The problem that Roberto most likely identify is the sample size is too small. The correct option is A.
What are scientific methods?Scientific methods are a series of methods that are done to extract correct and logical results. The method includes making a hypothesis, going through the process of calculations, making a conclusion, and then the result.
Roberto is studying the growth of tomatoes under sunlight. The hypothesis is that sunlight affects the height of the tomatoes. He took plant samples, but the study took time because the plant samples were too small. So taking the right size of plants is very necessary otherwise the whole study will do in vain.
Thus, the correct option is A. The sample size is too small.
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When cell division does not occur in the usual pattern, a(n):_____ results.
Answer:
Tumor
Explanation:
When cell division does not occur in the usual pattern, a tumor results. This is also the major cause of cancer as there is usually the presence of tumors or cancerous cells
These cells multiply through cell division rapidly and abnormally thereby causing problems in the organisms as a result of them affecting and spreading to other parts of the body which are close to the tumor growths.
Define monomer and polymer
Answer:
Monomer is a molecule that can be bonded to other identical molecules to form a polymer.
Polymer is a substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together
A monomer is a molecule that forms the basic unit for polymers, which are the building blocks of proteins
Polymer is a big molecule that forms from monomers, it consist of macromolecules (large molecules)
True or False? Fiber can reduce cholesterol levels and risk of heart attack, and can also prevent constipation.
any ideas on what it is?
Answer:A
Explanation:
The receptors on the ______ of a neuron receive(s) the transmitter released by other neurons.
Answer:
The receptors on the postsynaptic membrane (dendrites) of a neuron receive(s) the transmitter released by other neurons.
Explanation:
Neurons transmit nervous impulses. These cells are formed in general by a cellular body, dendrites and an axon. The dendrites are cytoplasmic extensions that receive stimuli from other cells. The axon is a long formation capable of conducting the electrochemical signals.
Every neuron forms connections with other neurons. These connections are known as synapsis. As it happens in every synapsis between neurons when a presynaptic neuron sends information, a neurotransmitter is released. This molecule is a chemical substance that travels through the synaptic cleft to the junctional area of the other neuron and binds to its receptors in the postsynaptic membrane, located in dendrites of the other neuron. This receptor is a protein structure that triggers an answer. The binding produces a depolarization of the cell called an excitatory postsynaptic potential. An action potential is initiated and spreads to the rest of the membrane depolarizing it. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic answer. To stop this process, the neurotransmitter must be taken out from the synaptic space.
tudy the graph above. What does the region labeled “A” represent? Question 2 options: Activation energy with a catalyst Energy of the products Activation energy without catalyst Reaction progress
Answer:
A. Activation energy with a catalyst
Answer:
A
Explanation:
8. The amount of energy the producers in this energy pyramid provide the primary
consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary
consumers. Based on this model, how much of the energy was provided to secondary
consumers?
Answer:
Energy provided to secondary consumers = 5,400
Explanation:
Given:
Primary consumers = 54,000 joules
Tertiary consumers = 540 joules
Find:
Energy provided to secondary consumers
Computation:
10 % energy is transfer to next user
So,
Primary consumers used 54,000 joules
So,
Energy provided to secondary consumers = 54,000 × 10%
Energy provided to secondary consumers = 5,400
all organisms possess a genetic system based on what
Answer:
DNA
Explanation:
Deoxyribonucleic acid or DNA is defined as the genetic material in all the living organisms responsible for all the genetic activities in an organism.
DNA carries genetic instructions that are inherited from one generation to another generation. The DNA comprises of genes having specific genetic code that encodes the sequence of amino acid residues in proteins. DNA undergoes the process of replication and form several copies of it which are passed on to next generation.
Hence, the correct answer is "DNA".
All organisms possess a genetic system based on DNA as it is a hereditary material.
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
As all genetic information is stored in DNA all genetic systems are based on DNA.
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How do Earth's ecosystems resist the flow toward maximum entropy?
a. Plants and animals decompose after dying, which returns energy to an ecosystem.
b. Plants and animals store energy in ATP to prevent entropy.
c. Plants continually add energy to an ecosystem using photosynthesis, which converts the sun's energy into usable energy.
d. There are fewer animals at the top of the food chain to keep entropy in balance.
Answer:
c. Plants continually add energy to an ecosystem using photosynthesis, which converts the sun's energy into usable energy.
Explanation:
The first thermodynamic law states that energy does not create or destroy, it transforms. The total energy in an isolated system keeps invariable, but the quality of the energy (exergy) might vary. The second thermodynamic law stated that if there is any process in a system there, the energy quality (exergy) must degrade. Any real process might only proceed in one direction that conducts to an increase in entropy. Entropy: Thermodynamic magnitude that indicates the degree of the molecular disorder in a system.Exergy: Measure of the maximum capacity of an energy system to produce useful work from a certain energy amount, as it balances with its environment.Ecosystems are the biotic, physical, and chemical components of nature, acting together as disipative processes out of balance. According to the second thermodynamic low, ecosystem development should increase the degradation of energy.
Vegetable growth helps to capture solar energy and dissipate useful gradients. Many times, plants of many species are arranged in such a way that they increase together the foliar surface to optimize capture and energy degradation. Most of the plants´ energy is destined to evapotranspiration, which is the main dissipative pathway in terrestrial ecosystems
The geographical distribution of species richness is highly correlated to the annual evapotranspiration potential. This relationship between species and exergy suggests a close link between biodiversity and dissipative processes. The more exergy is available among species, the more available energy degrading paths will be. Trophic levels and food chains are based on fixed photosynthetic material and the subsequent dissipation of those gradients. There will be a higher species´diversity in places where there is more available exergy.
how are saturated fats different from unsaturated fats
Answer:
Saturated fats have no double bonds in their chemical structure. They are “saturated” with hydrogen atoms. Because of their chemical structure, they have a solid consistency at room temperature. Unsaturated fats are typically liquid at room temperature. They differ from saturated fats in that their chemical structure contains one or more double bonds. They can be further categorized as: 3
Monounsaturated fats: This type of unsaturated fat contains only one double bond in its structure. Monounsaturated fats are typically liquid at room temperature and include canola oil and olive oil.
Polyunsaturated fats: This type of unsaturated fat contains two or more double bonds in their structure. They are liquid at room temperature. Polyunsaturated fats include safflower oil, sunflower oil, and corn oil.
Explanation:
A depressed area of bone located on the inetrnal surface of the mandible inferior to th emylogyodi ridge, appears radiolucent is called_________.
Answer:
Submandibular fossa
Explanation:
The submandibular fossa is a concavity found under the mylohyoid line in the lingual portion of the mandibular canal. The mandibular fossa is particularly important for dentists since this region is surrounded by structures that are essential in implant surgery, as well as the static bone cavity of the mandible. In consequence, dental professionals need to know the anatomy of the submandibular fossa for efficiently controlling hemorrhages and nerve damage.
How do humans get carbon and how do we get rid of it?
Answer:
by breathing in..And breathing out.
Explanation:
our lungs take in oxegyn and breath out carbon dioxide
Which statement describes the structure of lipids?
O composed of chains of monosaccharides
O composed of long chains of amino acids
O composed of single or double strands of nucleotides
O composed of a glycerol molecule bonded to fatty acid molecules
The statement which says that it is composed of a glycerol molecule bonded to fatty acid molecules, it is the glycerol molecule which holds up together the fatty acid molecules. The statement that is correct is option D.
What is the functional group in the fatty acid ?Fatty acid is the bio molecule in which the functional group is the carboxylic acid.
In molecule of the fats, the molecules of the fatty acids are linked to each of three of the carbons of the glycerol molecule with the ester bonds through oxygen atoms. While ester bond is forming on, 3 molecules are being released. Since the fats are consisted of three fatty acids with the glycerol but they are called as triacyl glycerol as well or the triglycerides.
A glycerol with the 3 fatty acids are attached with are referred as triglyceride , that is a sub constituent of the lipids or fat. It is formed from molecules of the glycerol with 3 fatty acids. The molecules of the triglycerides are main energy storing molecules of body of the animals that is mainly stored inside the adipose tissue.
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Compared with their counterparts in developed countries, individuals in developing nations typically have a
a
larger ecological footprint.
b
greater dependence on fossil fuels.
c
shorter life span.
d
higher standard of living.
Answer:b
Explanation:
classifications of snail
From the last question! which of the following is the independent Variable In experiment A: The presence of the headache B: the experimental drug C: The placebo D: the medical researcher.
Answer:
B
Explanation:
The experimental drug has a direct effect on the dependent variable which is the presence of the headache.
How is mitochondrial DNA used in forensic science
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations.
Answer:
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations. Hope this helps
Pill bugs are placed in a container where they have a choice of a wet or dry environment. researchers record how much time was spent on each side.
Answer:
This question is incomplete; the complete question is as follows:
Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side. What is the INDEPENDENT and DEPENDENT variables?
The independent variable is WET OR DRY ENVIRONMENT
The dependent variable is TIME SPENT
Explanation:
The independent variable in an experiment is the variable that the experimenter manipulates or changes in order to bring about an effect on the dependent variable.
Conversely, the dependent variable is the variable that the experimenter measures in an experiment. It is dependent on the independent variable.
In this question, the researchers placed pillbugs in containers that are either WET or DRY in order to measure how much time they spent in each side. Hence, the independent variable is the WET or DRY environment the pillbugs were placed because it is what the researcher changes while the dependent variable is the TIME SPENT because it is what the researchers measure.
How many vowels does Appalachian have ?
Answer:
5
Explanation:
aeiou are vowels
Answer:
5
Explanation: AEIOU somtimes Y are vowels
I don’t understand this and it’s a big test and I can’t fail!!
Answer:
Double Helix
The structure of DNA is called a double helix.
Which of the following has least mass? 1)3.01 × 10²³ atoms of C 2)8 gram of hydrogen 3)2.5 mole of Na 4)1 mole of S
Answer:
8 gram of Hydrogen
You have to work out the mass of each answers option so for
1. from atoms to mass you have to work with avagadros number (6.23x10^23) and then with the molar mass of the Carbon.
2. Already in grams so do not need to do anything
3. From mole to mass, just take the moles and multiply it by the molar mass
4. Do the same as 3 as they are both in moles
where would a pictograph not appear in a experimental outline
Answer:
somewhere on the outline
Answer:
Explanation:
Observations
What might be the effects on iron deficiency?
J. J. Thomson concluded what from his experiment
Answer:
He discovered all atoms contain tiny negatively charged subatomic particles or electrons with cathode ray tubes.
Explanation:
what is digestion??
Answer:
morjjhhhfligujcckgxjgxkgxgftixfjchkxdhshfzfyxkhgcgjf
The Scientific Method
Put these in order, top to bottom, from first in the process to last.
Investigation and Observations
Prediction
Summary
Hypothesis
Question
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Answer:
hey
Explanation:
Can a element exist in all states of matter?
Answer:
. Every element can exist in the 3 basic states:
Explanation:
2 Answers. : gas, liquid, solid. It is just a matter of enough freezing and high pressure (to solidify gases, even Helium) or enough heat and low pressure (to vaporize metals, even tungsten)
Traditional Chinese Medicine relied on the practice of___
which uses needles for pressing into pressure points on the body
Answer:
acupuncture
Explanation:
pretty much the definition of acupuncture. acupuncture was used and is used to today to heal and relax the body.
How can a change to earth orbit affect earth climate apex
Answer:
Change over time
Explanation:
4. CJ wanted to see if listening to music would make the basketball players make more baskets. On day one, he didn’t play any music and counted how many baskets they could make in 10 minutes. On day 2, he played rap music and counted the baskets, and on day 3, he played classical music and counted the baskets. a. Independent Variable (IV): _____________________________________________ b. Dependent Variable (DV): _____________________________________________ c. Control: ____________________________________________________________
Answer:
Independent variable- different kind of music played
Dependent variable- will listening to music make the players make more baskets?
Control- didnt play any music at all
Explanation:
CJ wanted to see if listening to music would make the basketball players make more baskets. Day 1, he didn't play any music and counted how many baskets they could make in 10 minutes. Day 2, he played rap music and counted the baskets. Day 3, he played classical music and counted the baskets.
What is independent variableThe Independent variable in above question is listing to music or not because it totally depend upon CJ that he is listing music or not.
Dependent variable
The dependent variable in above question is number of basket made by the players because it's totally depend on player that how much he want to made basket.
Controlled variable
The controlled variable in above question is 10 minute time period, players, height of the basket because it totally depend upon CJ that how much time they listen music and how he throw the basket so all above is controlled variable.
Therefore,CJ wanted to see if listening to music would make the basketball players make more baskets. Day 1, he didn't play any music and counted how many baskets they could make in 10 minutes. Day 2, he played rap music and counted the baskets. Day 3, he played classical music and counted the baskets.
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