Explanation

• A proportion is an equation that states that two ratios are equal.
• It is often written in the form: a/b = c/d
• Where a, b, c, and d are values or quantities, and the ratio a/b is equal to the ratio c/d.
• For example: 2/4 = 3/6

Explanation

• Proportion is a mathematical concept, not a step in the biological method.
• The biological method involves observation, data collection, and experimentation to develop and test hypothesis.

Explanation

• Members of the same species form a population, not members of different species.
• A population is a group of individuals of the same species that live in a specific geographic area and can interbreed.

Explanation

Inclined planes are used to move heavy loads over vertical obstacles.

The inclined plane is one of the six classical simple machines defined by Renaissance scientists. 

ND20-1-2023

Explanation

Pisciculture is the term used for the breeding and rearing of fish in specially constructed tanks and ponds.

It focuses on enhancing fish production and managing aquatic environments for optimal growth.

Explanation

Thalassemia is a genetic disorder that affects the production of hemoglobin, a protein in red blood cells that carries oxygen to the body's tissues.

It is characterized by abnormal hemoglobin production, leading to anemia, fatigue, and other complications.

Explanation

Macronutrients are the nutrients that are needed in the highest concentration by living organisms.

They include carbohydrates, proteins, and fats, which provide energy and support growth and maintenance of tissues.

Explanation

There are indeed two main types of metabolic reactions:

1. Anabolic reactions (building molecules, requiring energy)
2. Catabolic reactions (breaking down molecules, releasing energy)

Explanation

Ohm's law is not applicable to Semiconductors, as the relationship between voltage and current does not remain constant in these devices.

Semiconductors have a non-linear current-voltage characteristic, making Ohm's law inapplicable.

Explanation

When two capacitors of equal capacitance (C) are connected in series, the equivalent capacitance (Ceq) is half the value of one capacitor:

Ceq = (C × C) / (C + C) = (C × C) / 2C = C/2

In this case, C = 8 µF, so:

Ceq = 8 µF / 2 = 4 µF

Therefore, the equivalent capacitance of the two 8 µF capacitors connected in series is 4 µF.