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3 years ago

A student is observing a group of cells under a microscope. What observation would help her conclude that they are plant cells?

2 answers:

6 0

I think the answer is B, because only plant cells contain a cell wall, while the other answers contain an organelle that can be found in multiple cell types.

timurjin [86]3 years ago

3 0

Answer:

B) The cells appear well-defined, indicating the presence of cell walls

Explanation:

Cells are the fundamental and basic unit of all living organisms. Within each cell, are organ-like structures that performs specific functions making a cell work. These structures are called ORGANNELLES. Multicellular organisms like plants, animals etc are distinguished from one another at the cellular level based on the possession or not of structures that make up their cells.

A good example is the possession of a cell wall, in addition to the cell membrane, by plant cells. Cell wall is unique to plant and fungal cells. The cell wall of a plant cell is made up of cellulose and it clearly defines the cell. Hence, a cell with cell wall can be used to distinguish a plant cell from other cells. Cellular organnelles like mitochondria, nucleus is a characteristics of all eukaryotic cells like plant, animal and fungi cells.

You might be interested in

logging trees is often controversial. why would some people support logging and some people not support logging?

almond37 [142]

Supply and demand. There is a demand for wood for paper, house building, home projects etc. It is a necessary evil. Logging destroys plant and animal habitats but wood is a renewable resource, therefore, logging companies are not going to stop anytime soon.

3 0

3 years ago

In perspective, with Earth being 4,500,000,000 years old and humans being around 1,400,000 years; how long out of a 24 day time

fiasKO [112]

Answer:

Day time period have we as humans been here: 26 seconds

Explanation:

4,500,000,000 years = 1 day

1,400,000 years = X

X = 0.0003111

1 day = 86,400 seconds

0.0003111 = X

X = 26 seconds

In term of the Earth in 24-hour clock, <em>Homo sapiens</em> appeared on our planet only in the last 26 seconds, it means that in geologic time, humans have existed for only a brief time period and thereby it is a relatively new species.

5 0

3 years ago

Choose the best answer.

Margarita [4]

Answer:

A = water is an excellent solvent.

Explanation:

What is solvent:

Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute.

Explanation:

In simplest form solvent is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.

Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.

Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.

Example:

The minerals and nutrients in our body dissolved in water and transported through out the body.

8 0

4 years ago

Qué es la ayurveda hindú

Tanya [424]

Answer:

I'm Indian

Explanation:

but i have no clue what you said

4 0

3 years ago

What are the only cells that undergo meiosis

lord [1]

Answer:

Sex cells are the only cells that undergo meiosis.

Explanation:

Sperm cells in male and egg cells in female are the sex cells because these cells are responsible for the formation of new organism. When the sperm sex cell fuse with egg sex cell forming zygote which turns into a new organism. Mitosis occurs in somatic cells while meiosis occurs only in sex cells.

3 0

4 years ago