Edexcel: Combined Biology (Paper 1)
active site - ANS- The part of an enzyme where the chemical reaction occurs.
active transport - ANS- the movement of ions or molecules across a cell membrane into
a region of higher concentration, requiring energy.
Allele - ANS- Different forms of a gene
Amylase - ANS- enzyme that breaks down starch
antibiotic resistance - ANS- Resistance evolving rapidly in many species of prokaryotes
due to overuse of antibiotics, especially in agriculture.
antibiotics - ANS- Drugs that block the growth and reproduction of bacteria
Antibodies - ANS- Proteins that attach to antigens, keeping them from harming the body
Antigen - ANS- A protein that, when introduced in the blood, triggers the production of
an antibody
asexual reproduction - ANS- A reproductive process that involves only one parent and
produces offspring that are identical to the parent.
Benedict's - ANS- detects the presence of sugars.
Cancer - ANS- disorder in which some of the body's cells lose the ability to control
growth
Carbohydrase - ANS- enzyme that breaks down starches into sugars
cardiovascular disease - ANS- A general term for all diseases of the heart and blood
vessels.
cell differentiation - ANS- the process by which a cell becomes specialised for a specific
structure or function.
cell membrane - ANS- A cell structure that controls which substances can enter or leave
the cell.
, cell wall - ANS- A rigid structure that surrounds the cell membrane and provides support
to the cell. made of cellulose
Chlamydia - ANS- A bacterial infection that affects the reproductive organs of both
males and females
Chloroplast - ANS- An organelle found in plant and algae cells where photosynthesis
occurs
chromosomes - ANS- threadlike structures made of DNA molecules that contain the
genes
Classification - ANS- The process of grouping things based on their similarities
clinical testing - ANS- another name for clinical trials
CNS (central nervous system) - ANS- brain and spinal cord
communicable disease - ANS- a disease that is spread from one host to another
Cytoplasm - ANS- A jellylike fluid inside the cell in which the organelles are suspended
Denature - ANS- A change in the shape of an enzyme that can be caused by changes in
temperature or pH
Diffusion - ANS- Movement of molecules from an area of higher concentration to an area
of lower concentration.
Diploid - ANS- 2 sets of chromosomes
DNA - ANS- A complex molecule containing the genetic information that makes up the
chromosomes.
DNA bases - ANS- Adenine, Thymine, Cytosine, Guanine (A-T, C-G)
Dominant - ANS- An allele that is always expressed
double helix - ANS- two strands of nucleotides wound about each other; structure of
DNA
egg cell - ANS- female reproductive cell
electron - ANS- microscope that can magnify objects 100s of 1000s of times
active site - ANS- The part of an enzyme where the chemical reaction occurs.
active transport - ANS- the movement of ions or molecules across a cell membrane into
a region of higher concentration, requiring energy.
Allele - ANS- Different forms of a gene
Amylase - ANS- enzyme that breaks down starch
antibiotic resistance - ANS- Resistance evolving rapidly in many species of prokaryotes
due to overuse of antibiotics, especially in agriculture.
antibiotics - ANS- Drugs that block the growth and reproduction of bacteria
Antibodies - ANS- Proteins that attach to antigens, keeping them from harming the body
Antigen - ANS- A protein that, when introduced in the blood, triggers the production of
an antibody
asexual reproduction - ANS- A reproductive process that involves only one parent and
produces offspring that are identical to the parent.
Benedict's - ANS- detects the presence of sugars.
Cancer - ANS- disorder in which some of the body's cells lose the ability to control
growth
Carbohydrase - ANS- enzyme that breaks down starches into sugars
cardiovascular disease - ANS- A general term for all diseases of the heart and blood
vessels.
cell differentiation - ANS- the process by which a cell becomes specialised for a specific
structure or function.
cell membrane - ANS- A cell structure that controls which substances can enter or leave
the cell.
, cell wall - ANS- A rigid structure that surrounds the cell membrane and provides support
to the cell. made of cellulose
Chlamydia - ANS- A bacterial infection that affects the reproductive organs of both
males and females
Chloroplast - ANS- An organelle found in plant and algae cells where photosynthesis
occurs
chromosomes - ANS- threadlike structures made of DNA molecules that contain the
genes
Classification - ANS- The process of grouping things based on their similarities
clinical testing - ANS- another name for clinical trials
CNS (central nervous system) - ANS- brain and spinal cord
communicable disease - ANS- a disease that is spread from one host to another
Cytoplasm - ANS- A jellylike fluid inside the cell in which the organelles are suspended
Denature - ANS- A change in the shape of an enzyme that can be caused by changes in
temperature or pH
Diffusion - ANS- Movement of molecules from an area of higher concentration to an area
of lower concentration.
Diploid - ANS- 2 sets of chromosomes
DNA - ANS- A complex molecule containing the genetic information that makes up the
chromosomes.
DNA bases - ANS- Adenine, Thymine, Cytosine, Guanine (A-T, C-G)
Dominant - ANS- An allele that is always expressed
double helix - ANS- two strands of nucleotides wound about each other; structure of
DNA
egg cell - ANS- female reproductive cell
electron - ANS- microscope that can magnify objects 100s of 1000s of times
