Television signals are converted into light signals by___________?

Chromosomes are made up of __________ ?

A. DNA only
B. DNA and RNA
C. Proteins only
D. DNA and Proteins

It is impossible for a type of O+ baby to have a type of____________mother:

A. AB-
B. O-
C. O+
D. none
 
Parent Blood Type Estimate Table:
ABO Blood Type Calculator:

		Father’s Blood Type
		A	B	AB	O
Mother’s Blood Type	A	A or O	A, B, AB, or O	A, B, or AB	A or O	Child’s Blood type Must Be
	B	A, B, AB, or O	B or O	A, B, or AB	B or O
	AB	A, B, or AB	A, B, or AB	A, B, or AB	A or B
	O	A or O	B or O	A or B	O

		Child’s Blood Type
		A	B	AB	O
Mother’s Blood Type	A	A, B, AB, or O	B or AB	B or AB	A, B, or O	Father’s Blood type Must Be
	B	A or AB	A, B, AB or O	A or AB	A, B or O
	AB	A, B, AB or O	A, B, AB, or O	A, B, or AB
	O	A or AB	B or AB		A, B, or O

ABO blood types can be complicated to understand. This is mostly due to the fact that the ‘O-type’ antigen is masked by the presence of an A- or B-type antigen. This is explained in the following chart, showing the different the genotypes that make up the blood types.

Genotype (DNA)	Blood Type
AO or AA	A blood type
AB	AB blood type
BO or BB	B blood type
OO	O blood type

 
For example, two O blood type parents can produce a child with only O blood type. Two parents with A blood type can produce a child with either A or O blood types. Two parents with B blood type can produce a child with either B or O blood type. One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types.

What is meant by intermediate goods and services?

A. The same as capital goods, such as plants, buildings, vehicles, and machinery.
B. Products which one firm buys off another and then uses up in its own products.
C.  All inputs bought by firms, including labor and raw materials.
D. Imports.

Which metal known as quick silver ?

A. Mercury 
B. Sulphuric acid
C. Chromite
D. Quartz

Which of the following have maximum calorific value?

A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins

Food contains a number of basic elements such as carbohydrates, proteins, fats and alcohol. These elements all produce different quantities of energy when burnt. The amount of energy produced when one gram of any of these elements is burned is known as its calorific value.

Food component
Energy density
kJ/g
kcal/g

Fat	37	9
Ethanol (drinking alcohol)	29	7
Proteins	17	4
Carbohydrates	17	4
Organic acids	13	3
Polyols (sugar alcohols, sweeteners)	10	2.4
Fiber	8	2

Which of the following is not a contagious disease?

A. Hysteria
B. Measles
C. Typhoid
D. Influenza