Answer:
a. independent variable: the fertilizer.
treatments: the use of fertilizer in one of the fields.
b. dependent variable: the crop growth in height.
units: meters
c. two controlled variables: soil pH / solar-radiation exposure, and water supply
d. hypothesis: the fertilizer makes the crops grow bigger.
e. two sources of error in the first year:
the researcher might plant the two crops under different conditionstake wrong measures of the height of the cornsf. two sources of error in the second year:
she can fail in irrigating the crops climatic and environmental conditions might change and have different consequences on each of the fields (this source affects the results influencing the growth of the plants).Explanation:
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. These changes allow analyzing its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, the fertilizer is the independent variable. Treatments: Refers to the experimental procedure applied in the experimental group. In this example, the use of fertilizer is the treatment. Here the experimental group (the one that receives the experimental procedure, with changes in the independent variable) is the fertilized field. Data from the experimental group is compared with the data from the control group, to analyze the effects of the fertilizer.Dependent variable: The values of these variables respond to any change in the independent variable. It represents the quantity of something. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, the crop growth rate in height is the dependent variable, that depends on the fertilizer used in that field. The units in which the crop is measured are meters in height. Controlled variable: Refers to those variables equally applied to every group or subject in an experiment and have no influence on the results. These variables do not affect the change in the dependent variable values. In the exposed example, soil pH and solar-radiation exposure can be two controlled variables, as they must be equal for both fields. Water supply by irrigation ducts during the second year in both fields is also a controlled variable. Hypothesis: A hypothesis is a possible answer for a question, a speculation that is not verified yet and requires corroboration. A hypothesis must express what is expected to occur in a perfectly comprehensive manner. It must be objective and directly related to variables. In this example, the hypothesis might be that the fertilizer makes the crops grow bigger. Errors: These are the differences between the observed data or taken values and what is really happening in nature, which can lead to a misinterpretation of what is actually going on. These errors might be systematic mistakes performed by the researcher when measuring, taking data, applying the treatment, etc. Or they might be due to random errors, which are due to failures in the instrumentals, changes in the environment, a single mistake of the researcher while taking measures, among others. During the first year, the researcher might plant the two crops under different conditions (parcels with different slopes which affect solar-radiation) or might commit a mistake while applying the fertilizer (different concentrations for example), or might take wrong measures of the height of the corns. During the second year, she can fail in irrigating the crops correctly, providing more water to one of the fields. She can commit the same measuring mistakes. Or even climatic and environmental conditions might change and have different consequences on each of the fields.During the Human Genome Project, scientists learned that most of the human genomes
A. does not code for proteins
B. is located on sex chromosomes
C. is not inherited
D. codes for proteins
Answer:
a
Explanation:
does not code for proteins (
juss guessed)
what are the effector during the homeostasis of body temperature
Answer:
Body temperature is regulated by negative feedback. The stimulus is when the body temperature exceeds 37 degrees Celsius, the sensors are the nerve cells with endings in the skin and brain, the control is the temperature regulatory center in the brain, and the effector is the sweat glands throughout the body.
There are two alleles and 3 genotypes for the C gene locus (incomplete dominance). Individuals with different genotypes vary in their relative fitness. If the relative fitness of C1C1 individuals is 1.0, the relative fitness of C1C2 individuals is 0.9, and the relative fitness of C2C2 individuals is 0.8, which of these should result in future generations
The given question lack the choices of result that might come, however, the choices related to this question is as follows:
A. frequency of C1 will increase
B. frequency of C2 will increase
C. frequency of heterozygotes C1C2 will increase
D. frequency of both same alleles will increase
E. not enough information provided to predict
Answer:
The correct answer is - option A. Frequency of C1 will increase.
Explanation:
In incomplete dominance, the relative fitness of heterzygous cases place always in between the other two allele genotype cases. In the given question, the relative fitness of C1C2 individuals is 0.9 between the relative fitness of C1C1 individuals is 1.0 and the relative fitness of C2C2 individuals is 0.8.
It is because there is no barrier to increasing the fitness of the more fit allele. The result of this is an increase in the fit alleles which is C1 here to reach equilibrium in the population.
Hello all. I really need help immediately with this question. Here is the question! Explain how these terms work together IN TRANSLATION: mRNA, tRNA, codon, amino acid, protein
Thank you sm for the help :)
Answer:
Translation takes place in 3 main steps: initiation, elongation and termination.
In initiation, the ribosome binds with the mRNA strand and a initiation complex forms. An initiator tRNA molecule brings the first amino acid, methionine. It binds with the start codon using its anticodon, UAC. The large ribosomal subunit then binds to the small ribosomal subunit.
In elongation, more charged tRNAs bring the amino acids to be added on the growing polypeptide chain. Elongation continues until the ribosome encounters the stop codon.
In termination, a release factor binds to the stop codon, causing the polypeptide to be released from the ribosome. The ribosomal subunits separate from the mRNA and from each other. The polypeptide undergoes folding to form secondary and tertiary structures to become a fully-functional protein.
Notes:
• Translation is the process by which a protein is synthesized from mRNA.
• mRNA: messenger RNA
• tRNA: transfer RNA
• codon: A 3-nucleotide sequence that codes for a specific amino acid. For example, AUG codes for methionine.
1. True or false: In a mutualistic relationship, fungi feed on other living organisms and harm the host.
O false
O True
Answer: false
Explanation:
Describe how random mutation in an individual can result in a new adaptation in a population? pls help TwT
Answer:
See below
Explanation:
If a random mutation results in an increase in fitness (provides an advantage in survival/reproduction), thorugh natural selection, the mutation and its corresponding trait will become more prevalent. Those individuals with the advantage will be able to outcompete those without it in a limited-resource environment.
what are the right ascension and delineation of the vernal and autumnal equinoxes
Answer:
Autumnal equinox right ascension = 12 hours; declination = 0°; Sun rises at 90° azimuth and sets at 270° azimuth. December solstice right ascension = 18 hours; declination = -23.5° Sun rises at greater than 90° azimuth and sets at less than 270° azimuth.
Explanation:
1. What type of mixture is a solution?
a. Heterogeneous b. Homogeneous c. immiscible d. Miscible
2. Which of the following is not characteristic of a solutionę
a. It is a uniform mixture
b. It will scatter a beam light
C. It is stable over time
d. The solute and solvent cannot be distinguished by the naked
eye.
3. What is the substance that is being dissolved in a solution?
a. Solute b. Mixture c. Solvent d. Concentrator
. . c. .
4. What is the substance that dissolves the other substance in a
solution?
a. Solute b. Mixture c. Solvent d. Concentrator
5. In a salt water solution, what substance is considered the
solvent?
a. Salt
b. Water
C. Both are solvent
d. Neither substance is a solvent
Answer:
Here are you answers for all the question!!
Explanation:
1. B
2. B
3. A
4. C
5. B
Question 2
What is the system of classifying levels of organization from least complex to most complex?
One parent has blood type O, and the other has blood type Bi. What is the chance that they have a child that is blood type O?
Answer:
50%
Explanation:
Draw a Punnett square to solve this problem (see photo).
Blood type O has two recessive alleles, represented by two lowercase “i”s.
Blood type Bi has a dominant allele shown by capital i with superscript B and a recessive allele “i”.
In the result, two boxes are “IB i” (for blood type Bi) and two boxes are “i i” (for blood type O).
The chance of having a child with blood type O is:
2/4 = 1/2 = 50%
Therefore, the chance of having a child with blood type O is 50%.
Answer:
50
Explanation:
2/4 = 1/2 = 50%
what should you be thinking of before designing your research
Answer:
well it depends
Explanation:
you need to use keywords when researching terms or questions and be ready to read.
What do mantises do to attach their prey?
Suppose that a zygote had only one copy of chromosome 21. Do you think that this zygote would develop into a normal embryo and child? Explain why or why not?
Answer:
el niño tendría síndrome de downEl síndrome de Down es causado por un error aleatorio en la división de las células que tiene como resultado la presencia de una copia extra del cromosoma 21.
Answer:
The answer to your question, is the child would have down syndrome Down syndrome is caused by a random error in cell division that results in the presence of an extra copy of chromosome 21. hope this helps. :)
Explanation:
how do all of the parts of the cell help to make it function as a whole?
in many ways
Explanation:
cells is composed of many parts as it formed cell
1
Matter can alter its form through a chemical change or through a physical
change. No matter what the type of change is, every time matter alters its
form-
А
the matter releases heat energy.
B
some of the matter is destroyed.
I
с
new matter will be created.
D
the amount of matter is the same.
Answer:
D the amount of matter is the same
How does global warming affect earth’s troposphere?
Answer:
Most of the world's weather originates in the troposphere, a second scientist tells Carbon Brief, meaning that changes to seasonal temperatures could be affecting the likelihood of extreme weather events, such as flooding and drought.
Rocks from which source would most likely contain the highest percentage of silicate
minerals?
1. Ocean Basin
2. Volcanic Island
3. Mid ocean Range
4. A mountain in the middle of a continent
Answer:
The correct answer is (D): A mountain in the middle of a continent.
Explanation:
Help I tried this last time and nobody answered the question
Answer:
It is option C probably.............
Which of the following is not an example of a protist?
Paramecium
Kelp
Snail
Algae
A snail IS NOT an example of a protist. Protists are unicellular organisms, whereas snails are pluricellular organisms (i.e., snails are animals).
A protist is a broad category of eukaryotic organisms that are not animals, plants, or fungi.
The features of protists include:
Unicellular (i.e., they contain a nucleus)Presence of mitochondria.They can be parasitic microorganisms They prefer aquatic/moist environments.Protists include Protozoa (animal-like heterotrophic organisms), Protophyta (plant-like autotrophic organisms) and Molds (fungi-like organisms).
In conclusion, a snail IS NOT an example of a protist. Protists are unicellular organisms, whereas snails are pluricellular organisms (i.e., snails are animals).
Learn more in:
https://brainly.com/question/1977896?referrer=searchResults
This disorder is characterized by severe pain or throbbing on one side of the head and
can last up to a few days.
O Migraines
Epilepsy
O Dementia
O Quadriplegia
This tutorial will take you step by step through the question. Individuals with the genotypes Aa Bb CC Dd and Aa bb Cc Dd are crossed. Alleles of these four genes assort independently of one another. Now you can use the step by step method to answer this challenging question. Give the proportion of the progeny of this cross that are expected to have each of the following genotypes. Please answer as a decimal.
a) Aa Bb Cc Dd
Number
b) aa bb CC DD
Number
c) Aa bb Cc DD
Number
Answer:
The correct answer is -
a) 1/16
b) 1/64
c) 1/32
Explanation:
According to the law of independent assortment, each allele of a particular gene has equal chances of getting inherited into the gametes.
In a Mendelian cross of Aa x Aa would give;
AA = 1/4,
Aa = 2/4 and
aa = 1/4
The result of the cross between AaBb x AaBb would be 1/16 due to the fact that probability is still the same AA = 1/4, BB = 1/4 therefore, AABB = 1/16 = 1/4× 1/4.
Now based on this crossing the following:
AaBbCCDd x AabbCcDd.
Take each allele as individual
Aa x Aa would give; AA = 1/4, Aa = 2/4 and aa = 1/4
Bb x bb would give; BB = 1/2, bb = 1/2
CC x Cc would give; CC = 1/2, Cc = 1/2
Dd x Dd would give; DD = 1/4, Dd = 2/4 and dd = 1/4
Then the probability of progeny of the following would be:
a) the probability of AaBbCcDd = 2/4 x 1/2 x 1/2 x 2/4 = 1/16
b) the probability of aabbCCdd = 1/4 x 1/2 x 1/2 x 1/4 = 1/64
c) the probability of AabbCcDD = 2/4 x 1/2 x 1/2 x 1/4 = 1/32
Four friends were talking about how matter
and energy move through an ecosystem. This
is what they said:
Morrie: "I think only energy cycles through
an ecosystem
Feliciar "I think only matter cycles through
an ecosystem
Stefano: "I think both matter and energy
cycle through an ecosystem.
Lincoln: "I think neither matter nor energy
cycles through an ecosystem
Which friend do you most agree with?
Explain your
Thinking
Answer: Stefano
Explanation: Matter and energy changes forms.
The _______
are the primary cell type found in hyaline cartilage tissue.
list 5 importance of creation
Answer:
Creation reveals God and God's nature, character and purposes. Because creation is a means of God's revelation and because of its inherent value and goodness being created by God, we care for creation.
Answer:
Five importance of creation
1.God is the creator
2.God existed before he created the world
3.the world was well planned and is sustained by god
4.god blessed creation, which means that all creation is holy
5.On the seventh day, God rested
Choose all the answers that apply.
Water is:
easily dissolved in other liquids
strongly attracted to itself
not attracted to other materials
found in the atmosphere
recycled and reused
Answer:
recycled and reused
strongly attracted to itself
not attracted to other materials
easily dissolved in other liquids
Explanation:
Answer:
Easily dissolved in other liquids, strongly attracted to itself, recycled and reused.
Explanation:
What is it When cool air rushes in to replace warm air that has risen
1. Latitude
2. Longitude
3. Hemisphere
4. Equator
5. Wind
6. Sun
7. Poles
What causes hurricanes to increase in strength
Answer:
the greater the evaporation rate of warm moist air, the stronger the hurricane will be.
Explanation:
The pulse pressure is .
Answer:
Advertisement. The top number (systolic) minus the bottom number (diastolic) gives you your pulse pressure. For example, if your resting blood pressure is 120/80 millimeters of mercury (mm Hg), your pulse pressure is 40 — which is considered a normal and healthy pulse pressure.The ______ system plays the key role in allowing organisms to have offspring and pass on their unique genetic information.
A.
cardiovascular
B.
musculoskeletal
C.
nervous
D.
reproductive
What term means "to come after"?
Answer:
"pursue or hunt down someone."
Explanation:
Hope this helps. ^_^