أكاديميا - كولنز معاجم الجيب العلمية - البيولوجيا - انكليزي - فرنسي - عربي الحرف ١_a

Academia - Collins Scientific Pocket Dictionaries - Biology
English - French - Arabic Letter 1_ A

abdonem
abdomen m

stomach. In mammals, the name refers to the part of the body separated by the diaphragm from the thorax, and the abdomen contains the stomach, liver, and intestines. . . etc. In insects, the abdomen is the third posterior part of the body.

Head
Diaphragm
the chest
Belly

abscission
abscission f. excision f

Separation of leaves, fruits, and unpollinated flowers from plants by forming a layer of cork cells that clog the surface of the plant and ultimately prevent food and water from the part to be separated.

Ulna (leaf stem).
Vascular bundle
A layer of cork cells
Fellini's heart

absorption (of food)
absorption f (des aliments)

Absorption (food). The process of passing digested food particles from the intestine into the blood circulation. In mammals, absorption occurs in the final intestine. See ileum.

accommodation
accommodation f

adaptation. The way in which the mammalian eye is able to change its sharp scattering from a near object to a distant one, and vice versa, is by contracting or relaxing the ciliary muscles, which changes the shape of the lens and thus its focal properties, see eye.

A sharp eye on a nearby object
Suspension strap. Relaxed (bulging lens)
Contracted ciliary muscle
Light from a nearby object
A sharp eye on a distant object
Suspension strap. taut
(thin lens)
Relaxed ciliary muscle
Light from a distant object

active transport
transport m active

Active movement of materials against the “con-centration energy” using the metabolic energy gradient.

For example, (a) mineral salts are taken up from the soil by the root hairs of plants, (b) reabsorption of some substances by the kidney of a mammal. See diffusion.


ADH
HAD

. see antidiuretic hormone

adipose tissue
tissu m adipeих

Adipose tissue. Tissue composed of cells that store fat, found in mammals under the skin, around the kidneys, etc.

ADP (adenosine diphosphate)
ADP (adenosine diphosphote)

Adenosine diphosphate. See ATP.

adrenal glands
glands fpl surrénales

Adrenal glands. A pair of endocrine glands located in front of the kidneys of mammals that secrete the hormone adrenaline, which causes rapid heartbeat, breathing, etc., in response to stressful conditions.
hormones and endocrine glands. Look


aerobe
aerobie

Antenna of life. An organism that needs oxygen to live, see respiration.

alimentary channel
Conduit m alimentaire

alimentary canal. Alimentary canal in animals. In humans, it is a tube about nine meters long that extends from the mouth to the anus (see digestion).

alleles
all kinds of things

Antibodies. Sunsets. An inherited trait in an individual results from a pair of genes or subtypes. A pair of genes may produce similar or different effects. For example: The fruit fly Drosophila has a pair of antibodies that control...
With its wingspan. Their coalition dictates the possession of “a regular wing and a vestigial wing.” See monohybrid, inheritance, backcross, and incomplete dominance.