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IB Biology Latest Update with Verified Solutions genotype the alleles of an organism phenotype the characteristic of an organism dominant allele an allele that has the same effect on the phenotype when present in both homozygous and heterozygous states co-dominant alleles pair of alleles that both affect the phenotype when present in a heterozygote recessive alleles an allele that only has an effect on the phenotype when in homologous state locus the particular position on...

IB Biology Review with Complete Solutions cell theory -All living things are composed of cells -cells come from preexisting cells -Cells are smallest unit of life Challenges to cell theory: muscle fibres -They are fused cells, so they're long and have multiple nucleus -challenges cells are autonomous units Challenges to cell theory: Giant algae -certain species may grow large -challenges idea cells are microscopic and larger organisms are composed of many Challenges ...

IB Biology Midterm Study guide Exam Questions With 100% Correct Answers 1. Which are examples of homologous structures? A. The wings of bats and butterflies B. The fins of fish and whales C. The hindlimbs of frogs and grasshoppers D. The forelimbs of primates and penguins - answerD. The forelimbs of primates and penguins 2. Which is an example of natural selection? A. A giraffe stretching its neck to reach higher leaves B. A juvenile bird learning to sing C. Development of antibiotic ...

IB Biology Midterm Study guide Exam Questions With 100% Correct Answers 1. Which are examples of homologous structures? A. The wings of bats and butterflies B. The fins of fish and whales C. The hindlimbs of frogs and grasshoppers D. The forelimbs of primates and penguins - answerD. The forelimbs of primates and penguins 2. Which is an example of natural selection? A. A giraffe stretching its neck to reach higher leaves B. A juvenile bird learning to sing C. Development of antibiotic ...

IB Biology Midterm Study guide Exam Questions With 100% Correct Answers 1. Which are examples of homologous structures? A. The wings of bats and butterflies B. The fins of fish and whales C. The hindlimbs of frogs and grasshoppers D. The forelimbs of primates and penguins - answerD. The forelimbs of primates and penguins 2. Which is an example of natural selection? A. A giraffe stretching its neck to reach higher leaves B. A juvenile bird learning to sing C. Development of antibiotic ...

MetabolismAnabolism+catabolism. the chemical processes that occur within a living organism in order to maintain life. Enzymatic Reactions inside a living organism CarbonCarbon is an element with the atomic number 6, meaning it has four electrons in its outer shell. These electrons can form covalent bonds with carbon atoms or atoms of other elements. This allows a diversity of stable compounds to exist. LipidsA diverse group of Carbon containing macromolecules made up of carbon, hydroge...

leukocytes white blood cells, immune system phagocytes macrophages, white blood cells erythrocytes red blood cells, carry oxygen platelets used in clotting lymphocytes types of white blood cells that each have specific immune responses (Tcells and B-cells) humoral immune response if non-specific immunity fails, the body must produce a specific immune response to target the pathogen

proteinmacromolecule that contains carbon, hydrogen, oxygen, and nitrogen; they are made of subunits of Amino acids, needed by the body for growth and repair and to make up enzymes phospholipidThe phospholipids are not "true fats" because they have one of the fatty acids replaced by a phosphate group natural fatprotect and insulate body organs (major source of stored energy in the body) steroidSteroids are lipids because they are hydrophobic and insoluble in water, but they do not...

Mammals Lungs with alveoli Mammals Internal fertilization; give birth to live young; mammary glands Mammals Hair grows from skin; teeth including living tissue Birds Lungs with parabronchial tubes Birds Internal fertilization; Hard shells around the eggs

cell theory - Answer-- all living things are composed of cells - the cell is the smallest unit of life - cells only arise from pre-existing cells challenges to the cell theory - Answer-- *striated muscle* challenges the idea that a cell has one nucleus - *giant algae* challenges the idea that cells must be simple in structure & small in size - *aseptate fungal hyphae* challenges the idea that a cell is a single unit functions of life - Answer-- metabolism - response - homeostasis - gr...