Biology

?
Nutrition
Taking in of nutrients which are organic substances and mineral ions, containing raw materials or energy for growth and tissue repair, absorbing and assimilating them
1 of 49
Excretion
Removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements
2 of 49
Respiration
The chemical reactions that break down nutrient molecules in living cells to release energy
3 of 49
Sensitivity
The ability to detect or sense changes in the environment (stimuli) and to make responses
4 of 49
Reproduction
The processes that make more of the same kind of organism
5 of 49
Growth
A permanent increase in size and dry mass by an increase in cell number or cell size or both
6 of 49
Movement
An action by an organism or part of an organism causing a change of position or place
7 of 49
Diffusion
The net movement of molecules from a region of their higher concentration to a region of their lower concentration down a concentration gradient, as a result of their random movement
8 of 49
Osmosis
The diffusion of water molecules from a region of their higher concentration (dilute solution) to a region of their lower concentration (concentrated solution), through a partially permeable membrane
9 of 49
Enzymes
Proteins that function as biological catalysts
10 of 49
Photosynthsesis
The fundamental process by which plants manufacture carbohydrates from raw materials using energy from light
11 of 49
Balanced Symbol Equation for Photosynthesis
6CO2 + 6H2O ----(light chlorophyll)----> C6H12O6 + 6O2
12 of 49
Ingestion
Taking substances (e.g. food, drink) into the body through the mouth
13 of 49
Egestion
Passing out of food that has not been digested, as faeces, through the anus
14 of 49
Digestion
The breakdown of large, insoluble food molecules into small, watersoluble molecules using mechanical and chemical processes
15 of 49
Absorption
Movement of digested food molecules through the wall of the intestine into the blood
16 of 49
Transpiration
Evaporation of water at the surfaces of the mesophyll cells followed by loss of water vapour from plant leaves, through the stomata
17 of 49
Translocation
The movement of sucrose and amino acids in phloem; from regions of production to regions of storage or to regions of utilisation in respiration or growth
18 of 49
Hormone
A chemical substance, produced by a gland, carried by the blood, which alters the activity of one or more specific target organs and is then destroyed by the liver
19 of 49
Geotropism
A response in which a plant grows towards or away from gravity
20 of 49
Phototropism
A response in which a plant grows towards or away from light
21 of 49
Homeostasis
The maintenance of a constant internal environment
22 of 49
Asexual Reproduction
The process resulting in the production of genetically identical offspring from one parent
23 of 49
Sexual Reproduction
The process involving the fusion of haploid nuclei to form a diploid zygote and the production of genetically dissimilar offspring
24 of 49
Pollination
The transfer of pollen grains from the male part of the plant (anther or stamen) to the female part of the plant (stigma)
25 of 49
Inheritance
The transmission of genetic information from generation to generation
26 of 49
Chromosome
A thread of DNA, made up of a string of genes
27 of 49
Haploid Nucleus
A nucleus containing a single set of unpaired chromosomes (e.g. sperm and egg)
28 of 49
Gene
A length of DNA that is the unit of heredity and codes for a specific protein; a gene may be copied and passed on to the next generation
29 of 49
Allele
Two or more alternative forms of a gene
30 of 49
Diploid Nucleus
A nucleus containing two sets of chromosomes (e.g. in body cells)
31 of 49
Mitosis
Nuclear division giving rise to genetically identical cells in which the chromosome number is maintained by the exact duplication of chromosomes
32 of 49
Genotype
The genetic makeup of an organism in terms of the alleles present
33 of 49
Phenotype
The physical or other features of an organism due to both its genotype and its environment
34 of 49
Homozygous
Having two identical alleles of a particular gene
35 of 49
Heterozygous
Having two different alleles of a particular gene
36 of 49
Dominant
An allele that is expressed if it is present
37 of 49
Recessive
An allele that is only expressed when there is no dominant allele of the gene present
38 of 49
Mutation
A change in a gene or chromosome
39 of 49
Natural Selection
The greater chance of passing on of genes by the best-adapted organisms
40 of 49
Food Chain
The flow of energy (food) from one organism to the next beginning with a producer
41 of 49
Foodweb
A network of interconnected food chains showing the energy flow through part of an ecosystem
42 of 49
Producer
An organism that makes its own organic nutrients, usually using energy from sunlight, through photosynthesis
43 of 49
Consumer
An organism that gets its energy by feeding on other organisms
44 of 49
Herbivore
An animal that gets its energy by eating plants
45 of 49
Carnivore
An animal that gets its energy by eating other animals
46 of 49
Decomposer
An organism that gets its energy from dead or waste organic matter
47 of 49
Ecosystem
A unit containing all of the organisms and their environment, interacting together, in a given area, e.g. decomposing log or a lake
48 of 49
Trophic Level
The position of an organism in a food chain or food web
49 of 49

Other cards in this set

Card 2

Front

Removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements

Back

Excretion

Card 3

Front

The chemical reactions that break down nutrient molecules in living cells to release energy

Back

Preview of the back of card 3

Card 4

Front

The ability to detect or sense changes in the environment (stimuli) and to make responses

Back

Preview of the back of card 4

Card 5

Front

The processes that make more of the same kind of organism

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Cells, tissues and organs resources »