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Annette [7]
3 years ago
6

What is the main function of the circulatory system in multicellular organisms?

Biology
1 answer:
mamaluj [8]3 years ago
8 0
<span>main function of the circulatory system in multicellular organisms is to circulate blood and oxygen in our body .so the right option is
</span><span>A) to bring oxygen into the lung 
</span>hope this helps
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Rachael wants to test how sunlight impacts plant growth over time. She will add varying amounts of light to different sets of pl
Mrrafil [7]

Answer:

Independent variable: varying amounts of light

Dependent variable: plant growth

Explanation:

The variable, which are factors that can be altered, in an experiment can either be independent or dependent. An independent variable is one in which the experimenter manipulates or controls in order to bring about an outcome. For this experiment conducted by Rachel, the independent variable is the VARYING AMOUNT OF LIGHTS.

The dependent variable is the variable that responds to changes of the independent variable. In other words, the dependent variable is the outcome of manipulating the independent variable. Hence, the dependent variable is dependent on the independent variable. For Rachel's experiment, the PLANT GROWTH is the dependent variable because it is what responds to changes in amount of light (independent variable).

4 0
3 years ago
New combinations of genes may be produced by?
skad [1K]
<span>New combinations of genes may be produced by </span>immigration, mutation and sexual reproduction. These new combinations are also called variations.

4 0
3 years ago
Read 2 more answers
How many high-phosphoryl-transfer-potential molecules are required to synthesize phosphatidylethanolamine from ethanolamine and
valkas [14]

Answer: 3(three)

Explanation:

In the biosynthesis of phosphatidylethanolamine from ethanolamine and triglyceride, 3 high energy molecules are used in the first and second step.

The first steps occur in the cytosol, where ethanolamine is phosphorlated with ATP to give phosphoethanolamine and ADP by the enzyme ethanolamine kinases, and in the next reaction which is the rate-limiting step, phosphoethanolamine react with cytidine triphosphate (CTP) to form cytidine diphosphoethanolamine. In this reaction two molecules of phosphate group is given off.

The third step occurs in the endoplasmic reticulum CDP-ethanolamine react with diacylglycerol to form phosphatidylethanolamine.

The answer is Three high energy molecules. One molecule of ATP to form phosphorylethanolamine and two molecules of ATP to regenerate CTP from CMP.

8 0
3 years ago
Using land for agriculture and forestry can lead to soil erosion. Which of the following decreases with increased soil erosion?
Nataly [62]
Soil quality maybe??
3 0
3 years ago
In incomplete dominance what?
Arturiano [62]
Incomplete dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
5 0
3 years ago
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