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Arte-miy333 [17]
4 years ago
15

To test the hypothesis that plants grow faster in green light, a student set up 3 of the same type of plants. She placed the fir

st plant under a green light, the second plant under a regular light bulb, and the third plant under a red light. What is the dependent variable in this experiment? amount of water type of plant color of light plant growth NextReset
Biology
1 answer:
shepuryov [24]4 years ago
3 0
The dependant variable is the colour of light
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Explain the roles of plants and animals in soil formation.
igor_vitrenko [27]
Dead organic matter from the plants in the form of litter and root exudate (including acids, sugars, polysaccharides and ectoenzymes) and dead roots are processed by living organisms in the soils.
<span>For example, earthworms may substantially improve soil condition in newly formed soils, such as in post mining sites. In the same time, earthworms can also cause severe negative impacts by bringing invasive exotic species to the ecosystem.</span>


Plants<span>, </span>animals<span> and micro-organisms (fungi and bacteria) all affect </span>soil formation<span> by producing or contributing to humus production. The amount of humus in a </span>soil<span> is a result of how much </span>plant material has been incorporated into it.
3 0
4 years ago
Match the steps in the cell cycle in the correct order
Tcecarenko [31]

Answer:

1. Chromosomes line up - metaphase

2. Cell growth - G1

3. Final preparations for division - G2

4. Chromosomes get pulled apart - anaphase

5. DNA replication - S

6. Chromosomes condense - prophase

7. Chromosomes uncoil and nucleus reforms - telophase

8. The cytoplasm and organelles divide, and now there are two identical cells - cytokinesis

Explanation:

There are four primary phases, or stages, in the cell cycle, which is a systematic process. Each stage has a goal that has to be achieved before moving on to the next. G1, S, G2, and mitosis are the stages.
There is growth during the G1 phase. A lot of protein is produced and water is pumped in, increasing the volume of the cell. The DNA is also examined at this time to see whether there has been any damage. The G1 phase precedes the S phase, therefore before going into S phase, the cell must make sure it has enough energy reserves.

The cell duplicates its DNA during the synthesis phase, also known as the S phase. DNA content doubles due to the duplication of all chromosomes. The compact state of DNA is created by proteins, which do not exist in and of themselves. Therefore, in order to ensure that the new DNA is properly packed when DNA is replicated, new packaging proteins must be produced. Histones are the proteins that house DNA. The production of new DNA is closely linked to the production of new histones.

A cell multiplies its organelles during the G2 phase. Right before the cells divide into two distinct cells during mitosis, the G2 phase occurs. There must be distinct functioning organelles in each daughter cell. Organelles like the golgi and endoplasmic reticulum are linked networks of sizable membrane pouches that may change size. Other organelles, including mitochondria and chloroplasts, are separate structures that must separate similarly to how cells do.

The process of physically dividing a cell into two daughter cells is called mitosis. Prophase, metaphase, anaphase, and telophase are its four basic stages. The nuclear membrane deteriorates as the chromosomes thicken during prophase. The center of the cell's chromosomes align during metaphase. One chromosome splits in half during anaphase, sending one half to either side. The telophase is characterized by the pinching together of the cell's centre to form two separate cells.

6 0
2 years ago
A species that plays a critical role in maintaining the structure of an ecological community and helps to determine the types an
amm1812

Answer:

Option A, Key stone

Explanation:

A keystone species plays a major role in an ecosystem as it is the species whose presence effects all other species in the ecosystem .In general a keystone species is always a dominant predator that feed on prey population. If it is removed, the prey population will explode and the population diversity will reduce. For example - bison, prairie dog etc.  

Hence, option A is correct

7 0
3 years ago
What has happened to the population since 1997 of the West Nile Virus?? will mark as brainliest
NeX [460]
West Nile lead to a decline in susceptible avian and human hosts, with a subsequent decline in the number of cases since 1997
7 0
4 years ago
Hy does the structure of the plasma membrane make this type of transport necessary for fluids?
valina [46]

The structure of the plasma membrane makes this type of transport necessary for fluids is discussed below:

<h3>What do you mean by phospholipid membrane?</h3>

The membrane that divides the interior of the cell from the external environment is known as the plasma membrane, sometimes known as the cell membrane, and is present in all cells. A cell wall is affixed to the plasma membrane on the exterior of bacterial and plant cells.

Because water and other polar or charged substances cannot easily traverse the hydrophobic core of the membrane, the phospholipid bilayer created by these interactions serves as an effective barrier between the interior and exterior of the cell.

The complete sentence of question is:

Why does the structure of the plasma membrane make this type of transport necessary for fluids

Learn more about phospholipid membrane here:

brainly.com/question/14931617

#SPJ1

6 0
2 years ago
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