Biology & Genetics
Living organisms, cellular processes, evolution, heredity, and genetic variation.
73 words
Download MarkdownSome words in this topic are A2–C2 — part of Pro. A1 words are always free.
Go ProA2 (4) Pro
system
A2
/ˈsɪstəm/
A set of connected parts that work together as a whole.
M
S
host
A2
/hoʊst/
A person who invites and looks after guests.
M
S
population
A2
/ˌpɑ.pjəˈleɪ.ʃən/
The number of people living in a place.
M
S
clone
A2
/kloʊn/
A copy of something made to look or work just like the original.
M
S
B1 (17) Pro
cell
B1
/sɛl/
The smallest basic unit that makes up all living things.
M
S
virus
B1
/ˈvaɪ.ɹəs/
A tiny living agent that causes disease by spreading inside the cells of a living host.
M
S
gene
B1
/d͡ʒiːn/
A part of a cell that carries information passed from parents to children and controls traits like eye colour.
M
S
tissue
B1
/ˈtɪʃ.(j)u/
A piece of soft, thin paper used for wiping your nose or face.
M
S
organ
B1
/ˈɔɹɡən/
A part of the body that has a particular function, such as the heart or lungs.
M
S
genetic
B1
/d͡ʒəˈnɛt.ɪk/
Relating to genes or to the genes you inherit from your parents.
M
S
selection
B1
/səˈlɛkʃən/
a range of things to choose from
M
S
biology
B1
/baɪˈɑ.lə.d͡ʒi/
The science that studies living things such as plants and animals.
M
S
extinction
B1
/ɪkˈstɪŋkʃən/
The situation in which a species or group no longer exists.
M
S
habitat
B1
/ˈhæb.ɪ.tæt/
The natural place where a plant or animal lives.
M
S
organism
B1
/ɔʳˈɡan.ɪzəm/
A single living thing, such as an animal, plant, or microbe.
M
S
genetics
B1
/dʒəˈnɛtɪks/
The branch of biology that studies how characteristics are passed from parents to children.
M
S
nucleus
B1
/ˈnuː.kli.əs/
The central part of an atom, made of protons and neutrons.
M
S
biologist
B1
/baɪˈɑː.lə.dʒɪst/
a scientist who studies living organisms and the processes of life
M
S
ecosystem
B1
/ˈikoʊˌsɪstəm/
All the living things in an area and the way they affect each other and their environment.
M
S
ecological
B1
/ˌiːkəˈlɒd͡ʒɪkl̩/
Relating to the relationships between living things and their environment.
M
S
ecology
B1
/ɪˈkɑ.lə.d͡ʒi/
The study of the relationships between living things and their environment.
M
S
B2 (17) Pro
DNA
B2
/ˌdiˌɛnˈeɪ/
The substance in living cells that carries genetic information and passes on characteristics.
M
S
species
B2
/ˈspiːʃiːz/
A group of living things that are similar and can breed with one another.
M
S
evolution
B2
/ˌɛvəˈluʃ(ə)n/
The gradual process by which something changes and develops over time.
M
S
biological
B2
/ˌbaɪ.əˈlɑ.d͡ʒɪ.kəl/
Connected with biology or with living things.
M
S
bacteria
B2
/bækˈtɪɹ.i.ə/
Tiny living things, too small to see, that exist almost everywhere and can cause disease or help digestion.
M
S
immune
B2
/ɪˈmjuːn/
Protected against a disease, so you cannot catch it.
M
S
protein
B2
/ˈpɹoʊ.tiːn/
A nutrient found in foods such as meat, eggs, and beans that the body needs to grow and stay healthy.
M
S
inherit
B2
/ɪnˈhɛɹɪt/
To receive money, property, or a title from someone after they die.
M
S
cellular
B2
/ˈsɛl.ju.lɚ/
characterized by or divided into or containing cells or compartments (the smallest organizational or structural unit of an organism or organization)
M
S
membrane
B2
/ˈmɛm.bɹeɪn/
a thin pliable sheet of material
M
S
enzyme
B2
/ˈɛn.zaɪm/
a protein or RNA molecule that catalyzes a biochemical reaction without being consumed by it
M
S
respiration
B2
/ɹɛspɪˈɹeɪʃən/
The process of breathing in and out.
M
S
classification
B2
/ˌklæsɪfɪˈkeɪʃən/
The act of arranging things into groups based on shared qualities.
M
S
botany
B2
/ˈbɑ.tə.ni/
The scientific study of plants.
M
S
microbe
B2
/ˈmaɪkɹoʊb/
A tiny living thing too small to see without a microscope, such as a bacterium that can cause disease.
M
S
biotechnology
B2
/ˌbaɪoʊˌtɛkˈnɑːlədʒi/
The use of living things, such as cells or bacteria, to make medicines, foods, and other useful products.
M
S
photosynthesis
B2
/ˌfoʊ.toʊˈsɪn.θə.sɪs/
the process by which plants, algae, and some bacteria use light energy to make energy-rich chemical compounds
M
S
C1 (17) Pro
sperm
C1
/spɜɹm/
a male reproductive cell that can fertilize an egg cell
M
S
inheritance
C1
/ɪnˈhɛɹɪtəns/
Money or property received from someone who has died.
M
S
fossil
C1
/ˈfɑsl̩/
the preserved remains or shape of a plant or animal that lived long ago
M
S
parasite
C1
/ˈpæɹəˌsaɪt/
An animal or plant that lives on or inside another and feeds off it.
M
S
dominant
C1
/ˈdɑmənənt/
Most powerful, important, or noticeable.
M
S
fungus
C1
/fʊŋ.ɡəs/
Any member of the kingdom Fungi; a eukaryotic organism typically having chitin cell walls but no chlorophyll or plastids. Fungi may be unicellular or multicellular.
M
S
hereditary
C1
/həˈɹɛdɪˌtɛɹi/
Of a title, honor or right: legally granted to somebody's descendant after that person's death.
M
S
reproduction
C1
/ˌɹiːpɹəˈdʌkʃən/
The biological process by which living things produce offspring.
M
S
adaptation
C1
/ˌæd.æpˈteɪ.ʃən/
The process of changing to fit a new situation or environment.
M
S
embryo
C1
/ˈɛmbɹi.oʊ/
a plant, animal, or human in the earliest stages of development
M
S
metabolism
C1
/məˈtæb.əˌlɪz.əm/
the set of chemical processes by which a living organism converts substances into energy and materials needed for life, growth, and repair
M
S
genome
C1
/ˈd͡ʒiː.noʊm/
The complete set of genetic information in an organism.
M
S
chromosome
C1
/ˈkɹoʊməˌsoʊm/
a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order
M
S
heredity
C1
/həˈɹɛdəti/
Hereditary transmission of the physical and genetic qualities of parents to their offspring; the biological law by which living beings tend to repeat their characteristics in their descendants.
M
S
recessive
C1
/ɹɪˈsɛsɪv/
Describing a gene whose effect only appears when both inherited copies carry it; the opposite of dominant.
M
S
invertebrate
C1
/ɪnˈvɝː.tə.brət/
an animal without a backbone, such as an insect, mollusk, or worm
M
S
genotype
C1
/ˈd͡ʒɛnəˌtaɪp/
the genetic constitution of an organism, especially the combination of gene variants it has for a particular characteristic
M
S
C2 (10) Pro
mammal
C2
/ˈmæməl/
any warm-blooded vertebrate having the skin more or less covered with hair
M
S
parasitic
C2
/ˌpɛɹ.əˈsɪt.ɪk/
Relating to or caused by parasites, which live on or in another organism.
M
S
fertilization
C2
/ˌfɝːtəlɪˈzeɪʃən/
the union of male and female gametes to begin the development of a new organism
M
S
zoology
C2
/zoʊˈɑləd͡ʒi/
The branch of biology that studies animals.
M
S
symbiosis
C2
/sɪmbaɪˈoʊsɪs/
The occurrence of two different or opposing things in the same time and place.
M
S
embryonic
C2
/ˌɛmbriːˈɑːnɪk/
in an early stage of development
M
S
paleontology
C2
/ˌpeɪliənˈtɑːlədʒi/
the scientific study of prehistoric life through fossils and other remains preserved in rocks
M
S
vertebrate
C2
/ˈvɛɹ.tɪ.bɹeɪt/
having a backbone or spinal column
M
S
mitosis
C2
/maɪˈtoʊ.sɪs/
cell-nuclear division in which duplicated chromosomes separate into two genetically equivalent nuclei
M
S
meiosis
C2
/maɪˈoʊ.sɪs/
cell division in which one diploid cell undergoes two divisions to produce four haploid cells
M
S
C2+ (8) Pro
genus
C2+
/ˈdʒinəs/
a taxonomic rank grouping related species above the species level
M
S
anatomy
C2+
/əˈnætəmi/
the bodily structure of an organism, or its study
M
S
mutation
C2+
/mjuˈteɪʃən/
a change in form or structure, especially a heritable change in genetic material
M
S
ovum
C2+
/ˈoʊvəm/
a mature female reproductive cell; an egg cell
M
S
amphibian
C2+
/æmˈfɪbiən/
a cold-blooded vertebrate, like a frog, that lives both in water and on land
M
S
immunity
C2+
/ɪˈmjunəti/
protection from disease, obligation, or legal liability
M
S
physiology
C2+
/ˌfɪziˈɑlədʒi/
the branch of biology dealing with the functions of living organisms and their parts
M
S
reptile
C2+
/ˈrɛptaɪl/
a cold-blooded scaly vertebrate such as a snake, lizard, or crocodile
M
S
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