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otez555 [7]
1 year ago
10

A tudent wanted to ee if the color of water impacted the increae in temperature, in degree Celiu (°C), after 30 minute in the un

. Three beaker we're filled with 50milliliter (mL) of water. Five drop of food coloring were added to each beaker. The beaker were then placed on window ledge in direct unlight. Temperature reading were recorded every 10 minute for 30 minute
Biology
1 answer:
Naddika [18.5K]1 year ago
3 0

The test (independent) variable in this experiment is the color of the water. An independent variable is a variable that can be manipulated or vary in an experimental study to explore its effects. The independent variable is the cause.

Independent variables are the variable which the experimenter changes to test their dependent variable. A switch in the independent variable directly causes a change in the dependent variable. The result on the dependent variable is studied and noted.

There are two main types of independent variables; Experimental independent variables and Subject variables.

The independent variable is the component that can be changed in an experiment.

Learn more about the independent variable here:

brainly.com/question/82796

#SPJ4

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Please answer I'm BEGGING!!!!!!!!
Triss [41]

The first organisms in the food chain are the producers.  These are the plants.  Their role is to capture energy from the sun and turn it into chemical energy that is then used by every other organism in the community.

3 0
3 years ago
You are attempting to synthesize rRNA in a test tube using DNA isolated from mouse cells. In addition to the template DNA, ribon
olga55 [171]

Answer:

d. RNA polymerase II.

Explanation:

The main enzyme responsible for RNA synthesis is RNA polymerase, which <em>catalyzes the polymerization of 5'-triphosphate ribonucleosides (NTP) </em>directed by a DNA mold.

Eukaryotic cells contain <u>three types of nuclear RNA polymerases</u> that transcribe different types of genes. Protein-encoding genes are transcribed by RNA polymerase II to give mRNA.

3 0
3 years ago
11. Which is a density-dependent factor?
Sophie [7]

Answer:

Explained below:

Explanation:

Density-dependent factors are biological factors adopted by the population as a resource. The things can be like shelter, food, or different poor resources. Density-dependent factors affect fitful variations in the population as its density fluctuations. If the population is small, these portions typically support improved rates of birth and lower will be the death rates, empowering the population to increase and when the population is big and thick, these factors display that the birth rate is decreased and death rate became higher.

6 0
3 years ago
The interaction between DNA and histone proteins (forming nucleosomes) plays a key role in the regulation of gene expression in
ladessa [460]

Answer:

A. The chromatin near cis-regulatory sequences will be more closed and there will be less transcription.

Explanation:

In the presence of histones, the cis-regulatory sequences of DNA like promoter, enhancers etc. are not exposed. The function of the histone acetyltransferases (HATS) is to cause chromosome decondensation i.e. removal of histones from the DNA so that transcription of the DNA could occur. Histone acetyltransferases (HATS) cause acetylation of lysine amino acid of the histone proteins. Acetyl group is negatively charged so the acetylation of histone proteins leads to the removal of their positive charge which ultimately leads to the decrease in the interaction between N terminal of histones and negatively charged phosphate group of the DNA molecule. As soon as histones are removed from the DNA where cis-regulatory sequences are located, the DNA becomes accessible for transcription.

But here a drug has been added which blocks the activity of histone acetyltransferases (HATS) in cancer cells. So it is quite evident that in these cells, histones will not get removed from the cis-regulatory sequences of DNA so the DNA will be more closer or tightly packed as a result of which  less transcription will occur.

7 0
3 years ago
Where are endocrine glands found?
NISA [10]
They are found in the body
6 0
3 years ago
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