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A-Level Biology - Core Concepts & Terms

Essential definitions and fundamental concepts from the Cambridge International A-Level Biology syllabus. Ideal for quick revision of key terms across cells, molecules, and physiology.

20 cards

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#1

Front

Define Magnification

Back

The ratio of the size of an image to the actual size of the object. It indicates how much larger the object appears compared to its real size.

#2

Front

Define Resolution

Back

The ability of a microscope to distinguish between two objects that are very close together. Higher resolution allows for the visualization of finer details.

#3

Front

Function of Ribosomes

Back

Ribosomes are the site of protein synthesis (translation). They read mRNA sequences to assemble amino acids into polypeptide chains.

#4

Front

Function of the Smooth Endoplasmic Reticulum (SER)

Back

The SER synthesizes lipids and steroids. It also plays a role in the metabolism of carbohydrates and the detoxification of drugs and poisons.

#5

Front

What is a reducing sugar?

Back

A reducing sugar is a sugar that can act as a reducing agent because it has a free aldehyde group or a free ketone group that can isomerise to an aldehyde. Examples include glucose and maltose.

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