Answers
Answer:
See the answer below
Explanation:
The control group in an experimental study is the subject group that is not administered the treatment variable. The control group forms the baseline for comparing the effects produced by the treatment variable on the experimental group.
Thus, in this case, the control group would be the 10 mice that were not exposed to the radio waves.
The independent or the manipulated variable, in this case, is the exposure or otherwise of the mice to the radio waves.
The dependent variable is the actual variable that is going to be measured, otherwise known as the effect variable. In this case, the dependent variable would be the strength of the mice measured by their ability to push the block of wood blocking their food.
Since 8 out 10 mice and 7 out of 10 mice were able to push the wooden block in both the experimental and the control group, Bart's conclusion should reject the hypothesis that the radio waves make mice extra strong.
Bart's experiment can be improved by increasing the number of subject mice in each group. The more the number of subjects, the more the accuracy of the outcome would be.
Related Questions
Which of the following do plant cells have, but animal cells do not have?
Answers
Answer:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Which statement about the inheritance of blood types in humans is most likely to be correct?
- Type O is dominant to both Type A and Type B
- Type B and Type O are co-dominant to Type A
- Type A and Type B are co-dominant to Type O
- Types A and O are co-dominant to Type B
Answers
Answer:
Type b and a my answer promise copy this now
Explanation:
Which of these is a characteristic of a sustainable city?
A. Efficient mass transit between suburbs and the city center
B. Few green areas located near the city center
c. Strict zoning that prevents residential areas from being located near
business areas
Х
D. Well-maintained roads that prevent the need for too much walking
Answers
Answer:
B
Explanation:
Answer:
A
Explanation:
answer is a I had to learn the hard way
How are genetic relationships represented?
Answers
Answer:
Genetic relationships are analysed based on the comparison of allelic identity or differences, regardless of the number of SNPs that differ between two alleles of a gene, which simplifies the analysis.
Explanation:
If the wind was the same all across Earth, which ocean would have the largest waves?
Group of answer choices
A. Atlantic
B. Pacific
C. Indian
D. Southern
Answers
Pacific
A
That is the answer
Hope that helps
Tell me if I’m wrong
Which one do I choose
Answers
Answer:
C
Explanation:
Which best describes how heat energy move within a system?
Answers
Why are the best index fossils from species that only existed for a short period of time ?
Answers
Answer:
Because once they were very common they disappeared after the mass extinction event. ... Many geologic periods were defined by events that made natural boundary to the period.
Answer: Because once they were very common they disappeared after the mass extinction event.
Explanation: Hope this helppssss!!! :)
3.
Which stage of human development might be MOST concerned with cognitive function?
middle adulthood
adolescence
early adulthood
advanced adulthood
Answers
Answer:
Preschoolers, ages three to six, should be at the "preoperational" stage of Piaget's cognitive development theory, meaning they are using their imagery and memory skills. They should be conditioned to learning and memorizing, and their view of the world is normally very self-centered.
Explanation:
so early adulthood think so
The stage of human development that might be most concerned with cognitive function is advanced adulthood. The correct option is D.
What are cognitive functions?Cognitive functions are the psychological functions that are the mental processes that are done to express feelings and actions. They are eight types of cognitive functions.
In advanced adulthood, humans use most of the cognitive functions of the body.
Thus, the correct option is D, advanced adulthood in regard to the stage of human development.
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a population of 100 insects that live in an area 100 square meters has a density of 1 insect per square meter. what’s this an example of?
Answers
Animals in a South American rain forest and
plants in an African desert both belong to the
Answers
Answer:
Tropical rainforest
Explanation:
Tropical rainforest, luxuriant forest found in wet tropical uplands and lowlands near, members of the Canellaceae are shared between South America and Africa, and two In regions lying between the wet tropics and the deserts, climatic zones
4. Which human activity would (NOT) be classified as one that can harm
water source?*
O A. water pollution
B. waste of water resources
C. using sustainable ways to grow crops
Answers
if a blue eyed offspring is formed from black eyes parents, what type of character is the blue eye dominant or recessive? expalin with the help of a chart
Answers
Answer:
If a blue-eyed offspring forms from black-eyed parents, the blue-eyed trait must be recessive.
Explanation:
The blue-eyed trait is the recessive one because otherwise it could not come from parents with black eyes. A recessive trait is only expressed when both alleles for that trait are the same, and can only come from parents with the same trait, or heterozygotes.
In this case, both parents must be heterozygous, i.e. carriers of the recessive allele. If black eyes is B and blue eyes is b, then the genotype of the parents would be:
♂ Bb♀ BbIn a Punnett square can be seen the crossing:
Bb X Bb
Alleles B b
B BB Bb
b Bb bb
Where the offspring could be:
Bb black eyes 50%.BB black eyes 25%bb blue eyes 25%Therefore, if blue eyes is the recessive trait, as if it were the dominant trait it could not be the product of black-eyed parents.
The study of a living being is called biology.
The correct answer is recessive genes or mutation.
The character in the living organism is due to the gene present in the body. The genes are present in a pair. The single gene is known as an allele. The two alleles are as follows:-
DominantRecessiveIn this question, the parents have a black color eye but the offspring has blue color eyes. This is due to recessive gene inheritance because this gene is dormant in their parent and shows its character in this generation.
The chances of this case are 1/4 out of total.
The mutation is also the reason for the blue eyes because the abnormal change beside the population is called a mutation.
Hence, the correct answer is Recessive and mutation.
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Whats the name of this flower?
Answers
Answer:African lily
Explanation:
Just searched it
What are the kingdoms of life that scientists use to classify organisms?
A. Bacteria, Protista, Fungi, Plantae, Animalia, Phylum
B. Archaebacteria, Phylum, Family, Plantae, Animalia, Eubacteria
C. Eubacteria, Archaebacteria, Protista, Fungi, Phylum, Species
D. Eubacteria, Archaebacteria, Protista, Fungi, Plantae, Animalia
Answers
Answer:A
Explanation:
Organisms are classify on the basis of kingdoms Bacteria, Protista, Fungi, Plantae, Animalia, Phylum. Therefore, option (A) is correct.
How do we classify organisms?Organisms can be classified according to any number of criteria, including overall similarities, colors, ecological functions, etc. However, it is generally agreed that the most useful way for scientists to organize biological diversity is to group organisms according to shared evolutionary history.
It is divided into phyla or divisions, which are further subdivided into classes. Further divisions include order, family, genus and species, in that order. Thus, species is the basic unit of classification.
Organisms are usually grouped together based on their unique characteristics. The classification of an organism often provides useful information about its evolutionary history and which other organisms are related to it.
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When molecules of a gas or liquid move from greater concentration to a
lesser concentration through a selectively permeable membrane. This is
called.... *
Diffusion
Plasmolysis
Osmosis
Concentration gradient
Answers
Answer:
Osmosis
Explanation:
Osmosis is the diffusion of water or gas molecules, from a region of higher concentration to a region of lower concentration, through a partially permeable membrane
Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.
Plasmolysis is the process of shrinkage or contraction of the protoplasm of a plant cell as a result of loss of water from the cell.
The difference in the concentration of a substance between two areas is called the concentration gradient.
FILL IN THE BLANK!!!
genotype is the____pair of alleles (TT)____of an organism. And phenotype is the____apperence__of an organism
Answers
Answer:
THIS IS IT
Explanation:
The genetic makeup of an organism (ex: TT). Phenotype, The physical ... from each parent). This pair of alleles is called a genotype and determines the organism's appearance, or phenotype. ... A Punnett square can be used to predict genotype and phenotypes of offspring from genetic crosses
Your collar bones are _____________ to the navel.
a. Lateral
b. Inferior
c. Superior
d. Medial
Answers
The photos shown below illustrate a case of synpolydactyly, a genetic abnormality characterized by two phenotypes: partially or completely duplicated fingers or toes, and webbing between fingers or toes. The same mutations that give rise to the human phenotype also give rise to a similar phenotype in mice. In which family of genes do you think these mutations occur?
Answers
Answer:
The correct answer is - Hox gene.
Explanation:
Synpolydactyly is a joint presentation of syndactyly is the condition of the partially or completely duplicated fingers or toes and weblike development in between toes and fingers.
This takes place due to the Gene of HOX family that has mutated to rise this condition in the individual. The gene that is responsible for this genetic condition is the mutation in the D13 gene.
The correct answer is - Hox gene
Propose an explanation as to
why beta cells would have a
greater concentration of rough
endoplasmic reticulum and
ribosomes than some other cell
types.
Answers
Answer:
The intense and constant activity of insulin synthesis explains why pancreatic beta cells possess more rough endoplasmic reticulum and ribosomes than other cells.
Explanation:
Both ribosomes and the rough endoplasmic reticulum are necessary for protein synthesis to occur. In cells whose function is to produce substances, such as glands, the content of these cellular structures is higher in order to fulfill their function.
The pancreatic beta cells, located in the islets of Langerhans, have the function of synthesizing insulin, an endocrine hormone in charge of regulating the glucose content in the blood. Because the beta cells constantly produce insulin, their content of rugged endoplasmic reticulum and ribosomes is high, in order to satisfy the demand for this hormone in the body.
What is this a picture of
chromatin
sister chromatids
homologous pair
single strand of DNA
Answers
Explanation:
sister chromatids
—————. Are small round structures in cells that break down large food particles into smaller ones
Answers
Answer:
Lysosomes
Explanation:
Lysosomes also break down old cell parts and release the substances so they can be used again.
If a population size begins to_______rapidly, this can be a signal that extinction is coming.
Answers
Answer:
decreases
Explanation:
any decrease in the population can lead to a signal of extinction
any increase is result of rapid growth
Casimir recently purchased an old car. He notices the rims have some spots of rust on them. So, he goes to an automotive shop and chooses a product that is recommended for removing rust. Which acid is most likely to be found in the product? hydrofluoric acid sulfuric acid hydrochloric acid nitric acid
Answers
Answer: Hydrochloric acid
Explanation:
edge 2021
Answer:
Just here confirming that the answer is hydrochloric acid.
Explanation:
When a new strain of virus is discovered, what must scientist first do to prevent the spread
Answers
-identify the symptoms that people develop due to the strain
-work on an effective vaccine to help prevent the spread of the virus
Which organelle is generally larger in plant cells than in animal cells?
A mitochondrion
B. nucleus
C. ribosome
D. vacuole
Answers
Answer:
D.VACUOLE
Explanation:
Why can smaller cells diffuse oxygen and nutrients at a faster rate?
small surface area to volume ratio
large surface area to volume ratio
large surface area
more volume than surface area
Answers
Answer:
A further increase in the size of a cell could result in a surface area too small for adequate exchange of materials.: A large surface to volume ratio means that a small amount of living matter has a large surface through which nutrients, oxygen and wastes can diffuse.
Keeping track of what you earn, spend, and save are they key parts of a _____.
Answers
Which of the following is NOT found in tRNA?
Group of answer choices
Adenine
Cytosine
Thymine
Uracil
Answers
Answer:
Thymine i think
helppp, i need this asap
Answers
A determined the gender
B and D is part of mitosis not meiosis
The diagram that explains the crossing over in the following diagram is option C, as here the crossing over takes place and the chromosomes exchange their genetic materials and can later produce the gametes.
What exactly is the significance of the cross-over in meiosis?Crossing over is important in meiosis because it occurs when homologous chromosomes exchange genetic material, resulting in the formation of new combinations of genetic information and increasing genetic diversity in the population. As a result, evolution occurs, and unique offspring are produced.
Hence, the diagram that explains the crossing over in the following diagram is option C, as here the crossing over takes place and the chromosomes exchange their genetic materials and can later produce the gametes.
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