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Fully revised and updated, the sixth edition of this dictionary provides comprehensive coverage of biology, biophysics, and biochemistry, as well as key terms from medicine and palaeontology.
Dec 18, 2016 · Biology is the study of living things. It is broken down into many fields, reflecting the complexity of life from the atoms and molecules of biochemistry to the interactions of millions of organisms in ecology.
MADLY definition: 1. with a lot of energy and enthusiasm: 2. to love someone very much: 3. with a lot of energy and…. Learn more.
What does the adverb madly mean? There are three meanings listed in OED's entry for the adverb madly . See ‘Meaning & use’ for definitions, usage, and quotation evidence.
- Order
- Sensitivity Or Response to Stimuli
- Reproduction
- Growth and Development
- Regulation/Homeostasis
- Energy Processing
- Evolution
Cells are considered the most basic units of life because they represent discrete units that can independently embody all of the other characteristics listed below. All life living things consist of one or more cells. Even very simple, single-celled organisms are remarkably complex. Inside each cell, atoms make up molecules. These in turn make up c...
Organisms respond to diverse stimuli. For example, plants can grow toward a source of light or respond to touch (Figure 2). Even tiny bacteria can move toward or away from chemicals (a process called chemotaxis) or light (phototaxis). The movement toward a stimulus is considered a positive response, while the movement away from a stimulus is consid...
Single-celled organisms reproduce by first duplicating their DNA, which is the genetic material, and then dividing it equally as the cell prepares to divide to form two new cells. Many multicellular organisms (those made up of more than one cell) produce specialized reproductive cells that will form new individuals. When reproduction occurs, DNA, w...
All organisms grow and develop according to specific instructions coded for by their genes. These genes provide instructions that will direct cellular growth and development, ensuring that a species’ young (Figure3) will grow up to exhibit many of the same characteristics as its parents.
Even the smallest organisms are complex and require multiple regulatory mechanisms to coordinate internal functions, such as the transport of nutrients, response to stimuli, and coping with environmental stresses. For example, organ systems such as the digestive or circulatory systems perform specific functions like carrying oxygen throughout the b...
All organisms (such as the California condor shown in Figure 5) use a source of energy for their metabolic activities. Some organisms capture energy from the Sun and convert it into chemical energy in food; others use chemical energy from molecules they take in.
The diversity of life on Earth is a result of mutations or random changes in hereditary material over time. These mutations allow the possibility for organisms to adapt to a changing environment. An organism that evolves characteristics fit for the environment will have greater reproductive success, subject to the forces of natural selection. Evolu...
MADLY meaning: 1. with a lot of energy and enthusiasm: 2. to love someone very much: 3. with a lot of energy and…. Learn more.
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madly - definition, audio pronunciation and more for madly: 1. with a lot of energy and enthusiasm: 2. to love someone very much: : See more in Learner's Dictionary - Cambridge Dictionary.
