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ira [324]
3 years ago
12

How does the design of your experiment control for outside factors that may affect the results?

Biology
2 answers:
Valentin [98]3 years ago
7 0

Answer:

A factor of an experiment is a controlled independent variable; a variable whose levels are set by the experimenter. A factor is a general type or category of treatments. Different treatments constitute different levels of a factor

An experiment has several types of variables, including a control variable (sometimes called a controlled variable). ... A control variable is another factor in an experiment; it must be held constant. In the plant growth experiment, this may be factors like water and fertilizer levels.

Explanation:

nevsk [136]3 years ago
3 0

Answer:Here is one possible answer:

The seeds will all be planted at the same time and provided with the same amount of light and water. Three trials of the experiment will be conducted to improve the accuracy of the results.

Explanation:

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Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound micros
cestrela7 [59]

Answer:

Use 400 x in order to study the structure clearly.

Explanation:

Cell structures could be clearly identified when magnify the microscope about 400 x by using a compound microscope. Due to high magnification power of compound microscope, the individual is able to see different structures that are present in cells. while by using lower magnification, the individual is unable to see different structures clearly. So use high magnification in order to study the cell.

6 0
3 years ago
Phosphorus is required to synthesize the deoxyribonucleoside triphosphates used in DNA replication. A geneticist grows some E. c
Harlamova29_29 [7]

Answer:

<h2> After one round: one strand of DNA  will contain radioactive 3232P, while the other strand  will not contain any radioactive phosphate. </h2><h2> After two rounds:  here 50%  of DNA will have 3232P in both strands, while 50% will contain 3232P in one strand and nonradioactive in the other strand. </h2>

 

Explanation:

1. In the initial sample which is immediately removed after addition of radioactive isotope of phosphorus ( 3232P), hence there is  no incorporation of 3232P into the DNA because replication in the medium containing 3232P has not yet occurred.  

2. After one round of replication in  radioactive isotope of phosphorus ( 3232P) containing  medium, here  only one newly synthesized strand of DNA molecule will contain 3232P, while the other strand  will not contain any  radioactive isotope of phosphorus ( 3232P),  because DNA replication occurs in semi-conservative way.

3. After two rounds of replication in medium which contains radioactive isotope of phosphorus ( 3232P), here 50% of the DNA molecules will have  radioactive isotope 3232P in both strands, while the rest 50% will contain 3232P in only one strand and nonradioactive phosphorous in the other strand.

4 0
2 years ago
Which is a tough and flexible layer that surrounds plant cells, as well as some algal and bacterial cells?
Vika [28.1K]


This layer is called the cell wall.

The cell wall is located outside the cell membrane and provides the cells with structural support and protection.  It gives cells rigidity and strength, offering protection against mechanical stress.

In most cells, it is flexible, meaning that it will bend rather than hold a fixed shape, but has a lot of tensile strength which is necessary to be able to withstand internal osmotic pressure.

Cell walls are found in plants, bacteria, fungi, algae and some archaea.

8 0
3 years ago
Read 2 more answers
10) Which of the following is a tool that is used by astronomers to study radiation?
Anarel [89]
10.Which of the following is a tool that is used by astronomers to study radiation ?

B) A ground based telescope.

11.Which of the following is evidence of earth's revolution ?

D.constellation movement.

12.Which of the following forms of radiation can be shielded by earth atmosphere ?

A.Gamma rays.

Good luck! :)

4 0
3 years ago
Do crocdiles lay eggs
Luba_88 [7]

Answer:

Yes, crocodiles lay eggs

Explanation:

5 0
3 years ago
Read 2 more answers
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