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Yuliya22 [10]
3 years ago
14

Which of these work together in a feedback loop?

Biology
1 answer:
Otrada [13]3 years ago
3 0

B. Hypothalamus and pituitary gland

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Which is not a statement of the cell theory? Cells are the basic unit of life. O Cells are the basic unit of matter Cells come f
Scorpion4ik [409]

Answer:

Cells are the basic unit of matter is the correct answer.

Explanation:

The other answers are all a part of the cell theory, but that one is NOT and since the question is asking for the incorrect one, that's the answer. :)

8 0
3 years ago
Explain health in biology​
poizon [28]

Answer:

The World Health Organization defines health as "the state of complete physical, mental, and social wellbeing and not merely the absence of disease or infirmity." In either sense, health is a state of action that includes prevention, care, and individual responsibility to achieve optimal health.

Explanation:

6 0
3 years ago
imagine a model of a cell shaped like a cube.Calculate the ratio of surface area to volume for a cell model measures 3 cm on eac
Svet_ta [14]
Smaller cube (1 cm X 1 cm X 1 cm) 

<span>The surface area of one side = 1 cm X 1 cm = 1 <span>cm2</span></span>

 

<span>There are 6 sides, total SA = 6 X 1 <span>cm2</span> = 6 <span>cm2</span></span>

 

<span>Volume = 1 cm X 1 cm X 1 cm = 1 cubic cm (1 <span>cm3</span>)</span>

<span>Surface to Volume Ratio = 6 <span>cm2</span>/1 <span>cm3</span> = 6 <span>cm2/cm3</span></span>


Larger cube (6 cm X 6 cm X 6 cm) 

<span>The surface area of one side = 6 cm X 6 cm = 36 <span>cm2</span></span>

 

<span>There are 6 sides, the total SA = 6 X 36 <span>cm2</span> = 216 <span>cm2</span></span>

 

<span>Volume = 6 cm X 6 cm X 6 cm = 216 <span>cm3</span></span>

 

<span>Surface to Volume Ratio = 216 <span>cm2</span>/216 <span>cm3</span> = 1 <span>cm2/cm3</span></span>

<span> </span>


8 0
3 years ago
Rank the following elements by increasing atomic radius carbon aluminum oxygen potassium
Vlada [557]

Answer:

The elements in increasing order of atomic radius: oxygen, carbon, aluminum, potassium

Explanation:

The distance from the center of the nucleus to the outermost shell of the electron is known as the atomic radius of an element. The atomic radius decreases rightward along each period (row) of the table due to the increase in effective nuclear charge (the charge of the nucleus equal to the number of protons). Across a period, electrons are added to the same energy level and the increasing number of protons causes the nucleus to exert more pull on these electrons, which makes the atomic radius smaller.  Atomic radius increases down each group (column) of the periodic table because of the addition of electrons to higher energy levels, which are further away from the nucleus and the pull of nucleus weakens. Another reason for the increase in atomic radius is the electron shielding effect, which is the reduction of the attractive force between a nucleus and its outer electrons due to the blocking effect of inner electrons

While moving from left to right in the second period, c arbon comes before  oxygen  and so oxygen will have a smaller atomic radius than  carbon. While moving down the periodic table, al uminum comes before  potassium even if they are not in the same period. So aluminum 's atomic radius will be smaller than that of  potassium  but bigger than that of  carbon  and  oxygen.

.

4 0
3 years ago
Which of the following organelles is responsible for providing a barrier between the cell and its surroundings?
Archy [21]
It is C. Because the other 3 are in side of the the cell membrane to be protected.

7 0
3 years ago
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