Biology College

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. The data from his experiment are shown in the table below. Amount of light (hours) Number of plants Average volume of oxygen produced (mL) 1 4 0.50 6 4 2.0 10 4 5.0 What could he have done to increase the validity of his data? Reduce the number of plants. Remove the 1 hour group. Add a 0 hours control. Measure the oxygen in liters.

Answers

Answer 1

Answer:

Add a 0 hour control

Explanation:

In an experiments, a control is what serves as a guide to measure the amount of change.

An experiment is made up of independent and dependent variable

the dependent variable is the variable to be measured that is varied and in this case its the number of light while the independent variable stands alone and been depended on by dependent variable. For more precision, the varied variable should have an experimental control that will serve as a check to know if indeed the varied number of light is of significance or not. If the control is having higher average performance than the experimental variable then it shows the control is more preferably but when the performance of the variable is higher than the control then its indicates that either one or some of the variable or all are equally better than the control and can be used.

Answer 2

Answer:

Add a 0 hour control

Explanation:

i did the test

Related Questions

The sum of the Genetic traits in a population is called its

Answers

Answer and Explanation:

The gene pool is the sum of all the alleles in a population. Sometimes, allele frequencies within a population change randomly with no advantage to the population over existing allele frequencies. This phenomenon is called genetic drift.

Answer:

gene  pool

Explanation:

Identical twins are produced from the same sperm and egg (which splits after the first mitotic division), whereas fraternal twins are produced from separate sperm and separate egg cells. If two parents, one with brown eyes (a dominant trait) and the other with blue eyes (the recessive trait) produce one twin boy with blue eyes, what is the probability that a fraternal twin will transmit the blue eye allele to his or her offspring

Answers

Answer:

This is 25%

Explanation:

Analysis, Since the dominant brown eyed  parents  produce blue eye child, this shows they are heterozygote dominant

However,this fraternal twin is not genetically identical, due to the blue eye color,(recessive) but the fact remain that they  are the parents.(because he inherited the recessive allele from each of the parent)Therefore the probability is 25%.

This is because he is the only one out of the 4 kids( based on Mendelian fashion) this is  1/4,25%

Fraternal tweens are produced from different maternal and paternal gametes. The blue-eyed tween has 100% probability of transmitting the blue-eyes allele to the offspring, while the brown-eyed tween has 50% probability.

Available data:

Fraternal twins are produced from separate sperm and separate egg cells.Brown eyes ⇒ Dominant traitBlue eyes ⇒ Recessive trait

We will name B to the dominant allele that codes for brown, and b to the recessive allele that codes for blue eyes.

So, the possible genotypes and phenotypes are

Gentoype     Phenotype

BB                  Brown eyes

Bb                  Brown eyes

bb                  Blue eyes    

Solving the problem

The parent with blue eyes must be only bbThe parent with brown eyes must be either BB or Bb

For the twin boy to have blue eyes, he must have received two recessive alleles, one from the mother and one from the father.

So the father is heter0zyg0us for brown eyes, Bb.

Cross:  Bb  x  bb

F1) 1/2 of the progeny is expected to be brown-eyed, Bb

    1/2 of the progeny is expected to be blue-eyed, bb.

So we have two genotypes for the tweens, Bb and bb.

bbThe bb tween has blue eyes and is h0m0zyg0us recessive for the trait. So the probability that this fraternal twin will transmit the blue eye allele to his or her offspring is 100% This tween can only provide recessive alleles to his or her progeny.

BbThe Bb tween has brown eyes and is heter0zyg0us for the trait. So the probability that this fraternal twin will transmit the blue eye allele to his or her offspring is 50% This tween can provide one dominant or one recessive allele to his or her progeny.

So, the blue-eyed tween has 100% probability of transmitting the blue-eyes allele to the offspring. The brown-eyed tween has 50% probability of transmitting the same allele to the descendants.

You will learn more about tweens at

https://brainly.com/question/17180337

https://brainly.com/question/1015321

https://brainly.com/question/986349

What is the smallest or most specific level of organization organization you and your neighbors all have in common

Answers

Answer:

The cell

Explanation:

The smallest or most specific level of organization that all living organisms (including myself and my neighbors) have in common is the cell.

This is in accordance with the cell theory which has three basic components, including:

1. The cell is the basic unit of life

2. All living organisms are made up cells

3. Cells arose from pre-exsiting cells.

Other levels of organisation include tissues which are group of cells specialized for a certain function, organs which are group of tissues serving similar function, and systems which are group of organs working together as a unit.

Answer:

Population

Explanation: got it right sis !

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