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3 years ago

In which specimen were cells first identified

2 answers:

6 0

<span>The appropriate response is a cork. The cell was first found and named by Robert Hooke in 1665. He commented that it looked peculiarly like cells or little rooms which friars occupied, in this way determining the name. However what Hooke really observed was the dead cell dividers of plant cells (cork) as it showed up under the magnifying lens.</span>

Juliette [100K]3 years ago

4 0

<span>Cells were first identified by Robert Hooke in cork, in the year 1665. He said that they looked quite similar to the cellula, contaned in the compartments. But, actually, they were dead cells of the cork. He used a microscope to observe these cells. </span>

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What is an example of dolphins overproducing?

adell [148]

The orca, or killer whale, for example, is actually the largest member of the dolphin family. Dolphins are by far more prevalent than porpoises. Most scientists agree that there are 32 dolphin species (plus five closely related species of river dolphin) and only six porpoise species.

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4 0

3 years ago

Explain why treehouses dont change in height as a tree grows

Dmitrij [34]

Treehouses are built on the stem and the three branches, which do not grow in length, only in width. Trees grow in length only in the area of the buds, which are located at the ends of branches.
Maybe it is easier to understand this if you imagine that you put a small house replica on the palm of your hand and that your fingers are constantly growing from their tips. So, the house on your palm would not move, only your fingers, (the analogy to the three top buds) would become longer.

7 0

3 years ago

What is the speed of a wave with a wavelength of 0.5 m and a frequency of 20 Hz?

seropon [69]

Answer:

You multiply 0.5 by 20 which will give you 10 your answer is 10

4 0

2 years ago

Match each leukocyte to its normal percentage in a differential cell count. A. 50-70% B. 20-40% C. 2-8% D. 1-4% E. < 1% basop

Vsevolod [243]

Answers:

A. 50-70% - neutrophils

B. 20-40% - Lymphocytes

C. 2-8% - monocytes

D. 1-4% - eosinophils

E. < 1% - basophils

Explanation:

The blood differential test is used to estimate the percentage of each class of white blood cell (WBC) present in the blood and to indicate the presence of abnormal or immature cells.

The Test is Performed by taking of blood sample which is smeared onto a glass slide, then it's stained with a unique dye to indicate the class of white blood cells.

The Five class of white blood cells are

Neutrophils

Lymphocytes (B cells and T cells)

Monocytes

Eosinophils

Basophils

The different class of white blood cells are given as a percentage:

Neutrophils: 40% to 60%

Lymphocytes: 20% to 40%

Monocytes: 2% to 8%

Eosinophils: 1% to 4%

Basophils: 0.5% to 1%

Band (young neutrophil): 0% to 3%

7 0

3 years ago

Wats da answer bc I’m confused

trapecia [35]

Answer:

A. Cell

B. Organ

C. Tissue

Explanation:

cell: The smallest unit of life capable of independent reproduction. Generally contains nucleic acid, cytoplasm, a cell membrane, and many other proteins and structures.

organ: A structure made of different tissues that work together to perform physiological functions.

Tissues: A group of similar cells with the same origin that work together to perform the same function.

3 0

2 years ago