Chapter 1, Problem 1FTB

Organisms respond to _______. Organisms acquire and use _______ and ______ from the environment. Organisms are composed of cells whose structure is both ________ and ________. Collectively, organisms _____ over time.

Summary Introduction

To review:

The given blank space in the statement, “Organisms respond to ______. Organism acquires and uses _____ and _____ form the environment. Organism is composed of cells whose structure is both _____ and _____. Collectively, organism _____ over time.”

Introduction:

Every organism reacts toward stimuli. It helps them to adapt better in their nearby environment. This helps them to establish a balance between their body and surroundings.

Explanation of Solution

The provocatory action due to some activity occurring nearby is known as the stimulus. There are two types of stimuli namely: internal and external stimuli. For the body to the response against any action, there has to be an initiatory action known as the stimulus.

Living organism carries out their metabolic need either by energy production or consumption. Adenosine triphosphate (ATP), which is the energy currency of the cell, is produced when cell absorbs energy or uptakes certain organic or inorganic materials. Therefore, ATP provides energy to carry out the needful process in the cell.

The basic structural and functional unit of life is a cell. The structure and complexity of cell depends upon the organism of which it is a part of its evolutionary history. Multicellular organism contains a number of cells in comparison to a unicellular organism. Evolution is a degree of transformation in terms of heritable traits to the subsequent generation. The theory of evolution was given by Charles Darwin.

Conclusion

Organism responds to stimuli. Organism acquires and uses materials and energy from the environment. Organism is composed of cells whose structure is both organized and complex. Collectively, organism evolves over time.