The phrase "a single functional unit" is correct and usable in written English.
It can be used in contexts where you are describing something that operates as one cohesive entity or component, often in technical or scientific discussions.
Example: "In this system, each device acts as a single functional unit, contributing to the overall performance of the network."
Alternatives: "one cohesive component" or "a unified functional element".
The DASH (Disability of Shoulder, Arm, and Hand questionnaire) (Hudak et al. 1996) aims to capture the patient's own perception of their upper extremity function as a single functional unit.
Although there is no core to unite Chūbu region into a single functional unit, it constitutes a coherent geomorphological whole.
The two instructions are then treated as a single entity and are executed together in a single functional unit that is optimised to handle functions with three input operands instead of the traditional two inputs.
In unicellular organisms, glycans generally function only as structural components of the cell membrane, while in multicellular organisms they acquired various complex functions needed to integrate numerous cells into a single functional unit (Drickamer and Taylor 1998; Varki 1993).
The experience of the Chrysler Group first suggested to us that the answer lies in bringing all strategy-related activities into a single functional unit.
A muscle-inspired linear actuator that combines many piezoelectric micro-actuator "cells" into a single functional unit is designed and fabricated via folding assembly technique.
However, we demonstrated here that it extends to the 13 core genes that can then be considered as one single functional unit.
The system is defined more accurately as the set of membranes that form a single functional and developmental unit, either being connected directly, or exchanging material through vesicle transport.
The Ubx and bxd transcription units comprise a single functional domain in the bithorax complex of Drosophila melanogaster.
Deduction 2. Given Property 1, an extreme pathway can be viewed as a single, independent functional unit.
Combinations of PHD and BRDs are particularly frequent and are a hallmark of BRD proteins in families V and VI, and the PHD-BRD structure showed that the two reader domains form a single, stable functional unit (Tsai et al., 2010).
