108 results found

Search Results for: primary structure

Primary structure

Definition noun (biochemistry) A structure of a biological molecule in which there is a precise sequence or order of... Read More

Polypeptide

Polypeptide Definition Biology What are polypeptides? A polypeptide is defined as a polymer of amino acids joined together... Read More

Protein

Protein Definition Proteins are biomolecules comprised of amino acid residues joined together by peptide bonds.... Read More

Structure

Definition noun, plural: structures (1) (biology) An arrangement or organization of parts to form an organ, system, or... Read More

Cell wall

The cell is the structural, functional, and biological unit of all organisms. It is a membrane-bound structure containing... Read More

Trophic level

In ecology, a trophic level pertains to a position in a food chain or ecological pyramid occupied by a group of organisms... Read More

Secondary structure

Definition noun A structure of a biological molecule characterized by the local folding within the biopolymer as a result... Read More

Xylem

Xylem Definition Xylem is defined as a plant tissue that transfers water and nutrients from roots to all over the plant... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Primary cell wall

Definition noun plural: primary cell walls ˈpɹaɪməɹi sɛl wɔːl The layer of the plant cell wall that forms prior to... Read More

Chlorophyll

Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More

Transfer ribonucleic acid

Definition noun plural: transfer ribonucleic acids trans•fer ri•bo•nu•cle•ic ac•id, ˈtɹænsfɝ... Read More

Stems

External Form of a Woody Twig A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various... Read More

Angiosperm

Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More

Quaternary structure

Definition noun A structural level wherein several proteins (or polypeptide subunits) interact through non-covalent bonds to... Read More

Community (biology)

Community, in biology, refers to the assemblage of interacting organisms (either of the same or different species)... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Secondary cell wall

Definition noun plural: secondary cell walls ˈsɛkənˌdɛɹi sɛl wɔːl The layer of the plant cell wall that forms... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... Read More

Parenchyma

Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Intercalary meristem

The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More

Ecosystem

Ecosystem Definition An ecosystem is a system consisting of biotic and abiotic components that function together as a unit.... Read More

Middle lamella

Definition noun plural: middle lamellae ˈmɪdəl ləˈmɛl.ə A pectin-rich intercellular material that glues the... Read More

Nucleobase

Definition noun plural: nucleobases (biochemistry) The base in the nucleic acid, e.g. purines and pyrimidines Details ... Read More

Plant cell

Plant Cell Definition A plant cell refers to any cell of a plant. It is the structural and functional unit of plants. Plant... Read More

Pyruvate

Pyruvate Definition Pyruvates have been often recognized as one of the most important molecules that are frequently... Read More

Ganglia

Ganglia Definition What are ganglia? To simply define ganglia in biology, it is the structure of an oval shape that... Read More

Tissue

Tissue Definition What is tissue in the body? The body tissue is an aggregation of cells that function together and have a... Read More

Simple squamous epithelium

Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More

Plant Tissues

Plants are composed of three major organ groups: roots, stems, and leaves. As we know from other areas of biology, these... Read More

Turgidity

Turgidity is the state of being turgid or swollen, especially due to high fluid content. In general context, turgidity... Read More

Living things

Living Things Definition A living things pertains to any organism or a life form that possesses or shows the... Read More

System

A system pertains to interdependent or interrelated objects comprising and functioning as a whole. In biology, it may refer... Read More

Chemical Composition of the Body

In order to fully understand the mechanisms of human physiology, it is important to have an understanding of the chemical... Read More

Nervous System

    THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More

Afferent Nerve

Afferent Nerve Definition The word ‘aferent’ means "steering or conducting something towards a destination". The... Read More

Semilunar valve

The human heart structure consists of heart chambers (2 atria and 2 ventricles) that differ functionally from each other.... Read More

Roots

Upon seed germination, the embryo root, called the radicle, grows and develops into the first root. The radicle may thicken... Read More