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julsineya [31]
3 years ago
7

In 1838, Matthias Schleiden published his observation that plant tissues are composed of cells. A year later, Theodor Schwann pu

blished evidence that animal tissues were composed of cells. Which part of the cell theory is directly supported by the work of Schleiden and Schwann?
Biology
1 answer:
Norma-Jean [14]3 years ago
8 0
There are 3 parts of cell theory: all living things are made up of cells, all cells come from pre existing cells, and the cell is the basic unit of life. S<em>ince Schleiden and Schwann’s experiments proved that certain tissues were made up of cells (and those tissues are from living organisms), it most closely relates to the part that all living things are made up of cells. Hope this helps! (Also I apologize for the text going italic I’m not sure why it happened)</em>
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Different types of healthy tissues have different mitotic indices—the rate of dividing cells to the total number of cells in a s
Pavel [41]

Answer:

Cells of skin, for instance, have highest mitotic index.

Explanation:

Many cells are capable of dividing rapidly. <u>For example</u>, in plants, the cells near the root tip in the apical meristem divide rapidly to push through the soil because the root cap detects the gravity and direct rapid division and growth of cells near the tip.

If we take muscle, skin, kidney, and lung as examples that are given in real question, <u>skin cells have the highest mitotic index because they need to get replaced most frequently</u>.  

3 0
3 years ago
An object has a weight of 21,532 N on Earth. What is the mass of the object?
Nuetrik [128]

7) 2,197 kg

The weight of an object on Earth is given by:

W=mg

where m is the mass of the object and g=9.8 m/s^2 is the acceleration due to gravity. Since we know the weight of the object, W=21,532 N, we can re-arrange the equation to calculate the object's mass:

m=\frac{W}{g}=\frac{21,532 N}{9.8 m/s^2}=2,197 kg


8) 2,197 kg

Mass is an intrinsec property of an object: it says "how much matter" is contained within an object. Therefore, the mass of an object does not depend on its location: so, the object has the same mass on Earth and on the moon, and so its mass is still the same as the previous exercise, 2,197 kg.


9) 187,500 N

The force exerted on an object is given by Newton's second law:

F=ma

where m is the mass of the object and a its acceleration. In this problem, m=250 kg and a=750 m/s^2, so the force exerted on the object is

F=(250 kg)(750 m/s^2)=187,500 N


10) 2nd Law

Newton's second law states that an object which is acted upon a force experiences an acceleration given by:

a=\frac{F}{m}

where F is the force and m the mass of the object. As a result, the object accelerates, so if it was at rest, it starts moving.

This is exactly what happens in this example: the ball is initially at rest, but then a force is applied on it (by the kick), so the ball is accelerated and it starts moving.

3 0
2 years ago
Read 2 more answers
_____ mixing is a common method of producing color by varying the quantities of three inputsa. CPU b. RGB c. KGB d. OMG
valina [46]

Answer:

Option b

Explanation:

__RGB__ mixing is a common method of producing color by varying the quantities of three input.

For specialized applications such as LCD back lighting or projection images, and applications requiring dynamic color control, RGB mixing is the preferred choice.

Reference: Steigerwald, Daniel A., et al. "Illumination with solid state lighting technology." IEEE journal of selected topics in quantum electronics 8.2 (2002): 310-320.

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3 years ago
Which defines a hypothesis
a_sh-v [17]

Answer:

an educated guess

Explanation:

A hypothesis is a suggested solution for an unexplained occurrence that does not fit into current accepted scientific theory. The basic idea of a hypothesis is that there is no pre-determined outcome.

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An example of human activity that has had a positive effect on the environment
uysha [10]

Answer:

A. distruption of natural habitats through deforestation

Explanation:

sana nakatulong :^)

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