BIOLOGY HIGH SCHOOL

Which element is not one of the most abundant elements in living organisms?a. hydrogen
b. zinc
c. oxygen
d. carbon e.nitrogen

Answers

Answer 1
Answer:

Answer: The correct answer is Option b.

Explanation:

Abundant elements are defined as the elements which are present in huge amount on earth. The elements which are required by the living organisms in huge amounts are known as essential elements.

There are in total six essential elements which are required by the body in large amounts. They are Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), Phosphorus (P) and Sulfur (S).

From the given options, zinc is the only metal which is not required by the living organisms in huge amounts.

Thus, the correct answer is Option b.
Answer 2
Answer: zinc. all the other elements are found in living organisms to a relatively large extent. 

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Healthy soil depends on _______. a. the size of rock particles b. oxygen content c. moisture content d. all of the above

Answers

The correct answer is (d). All of the above.

The health of the soil depends on several factors such as the size of rock, which determines the water holding capacity of soil. The soil having smaller rock particles holds more water as compared to the soil having larger rock particles. The more the oxygen content of the soil, the better will be the growth of plants. The roots of the plants require oxygen for various functions. The moisture content enables the growth of healthy microorganism that is required for humification in the soil to increase the soil health.

Answer:

D

Explanation:

In the light dependent photosynthetic reactions, light energy is converted into _________ energy, which is stored in molecules like ATP. Then, in the light independent photosynthetic reactions, this energy is used to convert CO2 into ________.A) chemical; sugars
B) sugar; chemical energy
C) chemical; H2O
D) electrical; H2O

Answers

In the light dependent photosynthetic reactions, light energy is converted into chemical energy, which is stored in molecules like ATP. Then, in the

light independent photosynthetic reactions, this energy is used to convert CO2 into sugar.

 The answer is letter A) chemical; sugars 

I need help can someone help me ?

Answers

Answer:

A) The main functions of mitosis are growth and repair. Some cells once fully formed do not undergo cell division, such as nerve cells and muscle cells. Since you can never re-grow or repair these types of cells once they are mature, you must take care of the ones you have.

The lens system within a camera forms a _______ on the sensor.A. real, upright image
B. real, inverted image
C. virtual, upright image
D. virtual, inverted image

Answers

The lens system within a camera forms a virtual, inverted image on the sensor. The correct option among all the options that are given in the question is the last option or option "D". Most of the modern cameras that we find today have been derived from a simple camera known as pinhole camera.

I believe the answer is B. But not to sure.

Which trophic level contains the organisms that are source of all chemical energy used in an ecosystem

Answers

Answer:

The correct answer would be producers as they convert light energy to chemical energy by photosynthesis.

Explanation:

The food chain is a sequence of transfer of energy and food to one organism is consumed by the other.

Trophic level is the position or the place of organisms share in the food chain. Producers are the trophic level placed in the bottom of the food chain.

Producers (plants) convert light energy into chemical energy by the process of photosynthesis. This chemical energy transfer from one trophic level to another.  Producers provide food and energy to other trophic levels when they consume producer as their food. The green plants and blue-green algae are the examples of producer trophic level.

Thus, the correct answer would be producers.
Producers/plants ultimately contain the organisms that provide that energy.

All of the following are conditions that organisms in a tidepool must withstand exceptA constant tidal change
B temperature changes
C constant salinity
D changing salinity

Answers

 d bc (a b c  and d) r the same to make a tidepool
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