Answers
Answer:
In a research there are two variables independent and dependent variable. independent variable is defined as the variable which is controlled and changed in a scientific experiment and evaluate the effects on the dependent variable while the variable which are tested and measured in experiment are called dependent variable.
When antibiotic is sprayed at one side of the petri dish, the bacterial growth on that side will eventually decrease in comparison to other side.
So, the independent variable in this experiment will be antibiotic because it is used to understand the growth of bacteria by decreasing their numbers and the dependent variable in this experiment will be bacteria as they vary according to the change in independent variable that is antibiotic.
The bacteria is the dependent variable whose growth is dependent on the antibiotic presence or absence, while the antibiotic is the independent variable.
An Independent variable is a variable whose value is never dependent on another variable other than the researcher. A dependent variable is a variable whose value is dependent on another variable.
An independent variable is the expected cause. A dependent variable is the expected effect.
The side of the petri dish which is sprayed with an antibiotic will have a decreased bacterial growth as compared to the other side of the petri dish.
In this case, the antibiotic affects the bacterial growth and is called an independent variable which is not affected but the bacteria is a dependent variable as its growth is affected by the antibiotic.
To learn more about the antibiotic refer to the link:
#SPJ3
Related Questions
3. Which of the following statements about exergonic (energy releasing) reactions is NOT true?a. They release energyb. Glucose metabolism is an examplec. Their products have more energy than the reactantsd. There is a net energy losse. Bonds are broken
) Describe three benefits of CBT.
I need help with this problem
Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and the percent thymine measured in each sample.Sample A contains 21.3 % thymine and sample B contains 27.7 % thymine.Assume the organisms contain normal doubleâstranded DNA and predict the composition of the other bases..Percent adenine in sample A:
Answers
Answer:
Damage to the villi means less lactase released, so the body can't break down dairy.
Explanation:
If the small intestine is damaged, then that can mean that the villi are damaged. The villi usually release lactase, so this process will be compromised.
Less lactase released means that the body will have less of the enzyme required to break down lactose, the sugar present in dairy. Thus, individuals with celiac disease will struggle to digest dairy products
Captionless Image
Flowers evolved more recently than seeds and vascular tissue.
Most plants alive today produce flowers.
Flowers are a trait of living plant species, but not extinct species.
Flowers evolved from cone-bearing plants.
Answers
Answer:
My answer:
Explanation:
the below conclusion about flowers is supported by the evidence in the cladogram:
Flowers evolved more recently than seeds and vascular tissue
OA 3.125 x 108 atoms of calcium-41 and 4.375 x 10⁹ atoms of potassium-41
OB. 6.25 x 108 atoms of calcium-41 and 4.6875 x 10° atoms of potassium-41
OC. 6.25 x 108 atoms of calcium-41 and 4.375 x 109 atoms of potassium-41
OD. 3.125 x 108 atoms of calcium-41 and 4.6875 x 10° atoms of potassium-41
hts reserved.
Reset
Next
Answers
The correct answer for this question will be option D.
Calcium-41 = 3.12× atoms
Potassium-41 = 4.69× atoms
As stated in the question,
Half life of isotope of Ca-14 which decays into K-14 = 1.03 × years
Therefore, after 1.03 × years (1 half life)
Ca-41 will be 50%
and, K-41 will be 50%
After 2.06 × years (2 half lives)
Ca-41 will be 25%
K-41 will be 75%
After 3.09 × years (3 half lives)
Ca-41 will be 12.5%
K-41 will be 87.5%
After 4.12 × years (4 half lives)
Ca-41 will be 6.25%
K-41 will be 93.75%
After 4.12 × years,
Ca-41 = 6.25/100 × 5×
= 3.12 × atoms
K-41 = 93.75/100 × 5×
= 4.69 × atoms
Therefore, option D is correct.
Learn more about half-lives here:
#SPJ9
Answers
Answer:
RpPp x RpPp
Explanation:
For the recessive trait to be expressed, both parents should have at least 1 allele for the recessive trait. Now you can see that both recessive traits were expressed in at least one of the off-springs, this means that both parents had the allele for each recessive trait.
Archaea?
Answers
Explanation:
Domain archaea holds micro-organisms that is bacteria that has cell wall consist up of peptidoglycan .The eukarya differ from the archea and bacteria in that cells are eukaryotic,meaning they consist up of a membrane enclosed nucleus and other membrane enclosed organelle
It produces genetically identical cells.
0 It provides a means of asexual reproduction.
O It allows for cell and tissue repair
Answers
Meiosis is the process of cell division in which a single cell divides into four daughter cells. The genetic constitution of the daughter cells reduces to the half as compared with the parent cells. While crossing over, an exchanging of genetic material is passed between chromosomes and that allow variations to happen.