Question 1

Which of these provides your body with energy?

Accepted Answer

Nutrients are the substances in food that provide the raw materials and energy the body needs to carry out all its essential processes. There are six groups of nutrients: 1. Carbohydrates. 2. Fats. 3. Proteins. 4. Vitamins. 5. Minerals. 6. Water.

Question 2

Plants synthesis protein from

Accepted Answer

We know that, proteins are polymers of amino acids. So, plants are also used to synthesise protein from amino acids. Hence, plants synthesis protein from amino acids in the presence of ATP by specific synthetases.

Question 3

The longest period of prenatal development is the

Accepted Answer

The third and longest period of prenatal development, extending from the ninth week until birth is Fetal period. The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week are known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.

Question 4

What is the main component of bones and teeth?

Accepted Answer

The main component of bones and teeth is Calcium Phosphate.

Question 5

In a plant cell, DNA may be found in

Accepted Answer

All of the genetic information in a cell was initially thought to be confined to the DNA in the chromosomes of the cell nucleus. It is now known that small circular chromosomes, called extranuclear, or cytoplasmic, DNA, are located in two types of organelles found in the cytoplasm of the cell. These organelles are the mitochondria in animal and plant cells and the chloroplasts in plant cells. Chloroplast DNA (cpDNA) contains genes that are involved with aspects of photosynthesis and with components of the special protein-synthesizing apparatus that is active within the organelle. Mitochondrial DNA (mtDNA) contains some of the genes that participate in the conversion of the energy of chemical bonds into the energy currency of the cell—a chemical called adenosine triphosphate (ATP)—as well as genes for mitochondrial protein synthesis.

Question 6

What organelle is responsible for photosynthesis?

Accepted Answer

Chloroplasts are organelles in plant and bacteria cells that contain the chlorophyll is responsible for photosynthesis.

Question 7

Plants developing in dry conditions are

Accepted Answer

Plants developing in dry conditions are called as xerophytes.

Question 8

Plants wilt due to excess of

Accepted Answer

Plants wilt due to excess of Transpiration.

Question 9

Most important weather phenomena occur in the

Accepted Answer

Most important weather phenomena occur in the layer of Thermosphere. Most of the weather phenomenon occur in the layer of Troposphere.

Question 10

The first stage in the formation of coal is

Accepted Answer

The first of the four stages of coal formation is lignite coal. There are four stages of coal formation: 1. Peat, 2. Lignite, 3. Bituminous and 4. Anthracite. The bacteria has removed a large portion of the other constituents of the plant matter and left around 25 to 34 percent.

Question 11

Glass is made of the mixture of

Accepted Answer

A glass is made of liquid sand. You can make glass by heating ordinary sand and made into a liquid and mix with silicates to form a glass.

Question 12

Water is a compound because it?

Accepted Answer

We know that All compounds are molecules, but not all molecules are compounds. Water is a molecule because it is made from atoms that have been chemically combined. It is also a compound because the atoms that make water are not all the same - some are oxygen and some are hydrogen. Hence, Water is a molecule and a compound.

General Science Questions