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IB Biology SL exam questions with correct answers
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IB Biology SL exam questions with correct answers
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IB Biology SL exam questions withcorrect answers
Organic compound - .......🔷ANSWERS🔶......✔✔ A compound that contains carbon found in living
organisms, excluding carbonates and oxides
Enzyme - .......🔷ANSWERS🔶......✔✔ Biological catalysts made of protein that speed up the rate of
a reaction
Active site - .......🔷ANSWERS🔶......✔✔ The region of an enzyme where the substrate binds
Denaturation - .......🔷ANSWERS🔶......✔✔ A structural change in the 3-D shape of a protein
causing the loss of its chemical properties
Cell respiration - .......🔷ANSWERS🔶......✔✔ The controlled release of enrgy from organic
compiunds in cells to form ATP
Gene - .......🔷ANSWERS🔶......✔✔ A heritable factor that controls a specific characteristic
Alleles - .......🔷ANSWERS🔶......✔✔ Specific forms of a gene, differing by one or few bases only and
occupying the same locus of the gene
Genome - .......🔷ANSWERS🔶......✔✔ The whole of the genetic information of an organism
Gene mutation - .......🔷ANSWERS🔶......✔✔ A change in the gene sequence
Homologous chromosomes - .......🔷ANSWERS🔶......✔✔ Chromosomes similar in structure, with
the same genes, but coming from different parents
, Genotype - .......🔷ANSWERS🔶......✔✔ The alleles of an organism
Phenotype - .......🔷ANSWERS🔶......✔✔ The characteristics lof an organism
Dominant allele - .......🔷ANSWERS🔶......✔✔ An allele that has the same effect on the phenotype
in the homozygous of heterozygous state
Recessive allele - .......🔷ANSWERS🔶......✔✔ An allele that only affects the phenotype in the
homozygous state
Codominant alleles - .......🔷ANSWERS🔶......✔✔ Pairs of alleles that both affect the phenotype
when present in the heterozygous state
Locus - .......🔷ANSWERS🔶......✔✔ The position of a gene on homologous chromosmes
Homozygous - .......🔷ANSWERS🔶......✔✔ Having two identical alleles of a gene
Heterozygous - .......🔷ANSWERS🔶......✔✔ Having two different alleles of a gene
Carrier - .......🔷ANSWERS🔶......✔✔ An individual that has one copy of a recessive gene coding for
a genetic disease (that appears in homozygous individuals)
Test cross - .......🔷ANSWERS🔶......✔✔ Testing a suspected heterozygote by crossing it with a
known homozygous recessive
Sex linkage - .......🔷ANSWERS🔶......✔✔ Occurs when genes are present on the sex chomosomes (X
or sometimes Y) and are thus inherited with gender
Clone - .......🔷ANSWERS🔶......✔✔ A group of genetically identical organisms or cells derived from
a single parent
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