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posledela
3 years ago
14

What is main difference between fresh water & ocean water ecosystem?

Biology
1 answer:
IrinaVladis [17]3 years ago
5 0

Answer:

I think it might be A. I'm not sure.

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Describe the role of signal molecules in activating gene expression at the appropriate time
Sholpan [36]
Some genes only need to be expressed or produced when needed. For example, fibrinogen is a protein that needs to be produced when a person needs to clot. A signal protein 'signals' or tells the DNA to start producing that particular protein. Imagine if the protein was produced all of the time at the same quantities...a person would be prone to strokes and other sicknesses that are caused by blocking the flow of blood to tissue.
6 0
3 years ago
Cell Division Homework #1 Introduction to Cell Division Directions: Compare and contrast the following pairs of terms:
wel

Answer:

Sister chromatids / centromeres: When a single chromosome has been replicated in copies, each copy is called a sister chromatids.

A special part of the chromosome called the centromere holds the two sister chromatids together. A centromere is like a built-in rubber band for two sister chromosomes.

Mother cell / daughter cell: identical.

Daughter cells are genetically identical to the mother cell at the stage of production through mitosis.

On the other hand, at the stage of production through meiosis, the daughter cells are genetically different and contain only half of the genetic material of the mother cell.

Interphase / cell division: A cell spends most of its time in what is called interphase, and during this time it grows,

replicates its chromosomes, and prepare for cell division.

The cell then leaves Interphase, undergoes mitosis, and completes its division.

DNA / chromosome: Genes are segments of deoxyirbonucleic acid (DNA) that contain the code for specific protein that functions in one or more types of cell in the body

Chromosomes are structures within cells that contains a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Mitosis / cytokinesis: Basically, mitosis is a process by which the duplicated genome in a cell is separated into halves that are identical in nature.

Cytokinesis is the process where the cytoplasm of the cell divides to form two 'daughter' cells. The result is the formation of two 'daughter cells', each having a nucleus.

8 0
3 years ago
What factors contribute to membrane fluidity? what factors contribute to membrane fluidity? hydrogen bonds cytoskeleton hydropho
tatuchka [14]

 

Hydrophobic interactions is one of the factors that contribute to membrane fluidity. The hydrophobic effect is cause of the desimination of a mixture of oil and water into its two components. It is also responsible for effects related to biology, including: cell membranes and vesicles formation, protein folding, insertion of membrane proteins into the nonpolar lipid environment and protein-small molecule associations.

6 0
4 years ago
Two reasons why it is easy to harvest perlemoen
lianna [129]

Perlemoen is reasonably easy to take available of the ocean and do not really required huge and expensive equipment. The poachers take out millions of rands worth of Perlemoen with relatively simple and cheap equipment such as wet suites, googles and flippers. The most expensive equipment they use are their boats and vehicles. In comparison with the lucrative industry the costs of poaching are low. Perlemoen are often the smaller, younger abalone of the species that are taken because they are quite simply and easier to harvest.

 

1.       The younger perlemoen are found closer to the shoreline and often bunched together and they can get a whole whack of them at one spot.


2.       The strandlopers harvested the perlemoen from the rocks during low tide without the need for diving.

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5 0
4 years ago
How do some people end up crazy and some of the things that make people crazy make others stronger
pantera1 [17]

Answer:

Everyone is raised differently, some people are used to handling certain situations better than others. For example, if someone is raised in an area with lots of sunlight and warm temperature and they decide to move to somewhere cloudy and cold when they grow up, the dramatic difference between temperatures could make this person 'crazy' and unable to adapt to simple situations in this climate, regardless of how easy it is to handle for others. This could be a metaphor for many situations.

8 0
3 years ago
Read 2 more answers
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