Science Crossword Puzzles

reactions conducted in the presence of oxygen, a substance that increases the rate of a chemical reaction without itself being used up, a factor …

the "powerhouse" of a cell that converts energy stored in food to energy the cell can use, captures energy from sunlight and changes it to a …

an element that is needed to make protein, absorbed by the roots of plants, bacteria and fungi that feed on dead plants/animals, used for growth and …

all of the nonliving parts of an ecosystem, any individual living thing, the transfer of energy from one organism to another through a food chain or …

the first part of the small intestine, one of its main tasks is to neutralise stomach acids passing into the intestines, as well as making bile, this …

binary _ _ _ _ _ _ _ , in meiosis the number of chromosomes are _ _ _ _ _ _ _ by half, sexual reproduction occurs in a _ _ _ _ _ , phase of mitosis …

this happens to the surface of an alkali metal when it reacts with oxygen, this gas is produced when an alkali metal reacts with water, sodium _ into …

strand of dna or rna surrounded by a layer of protein that can infect and replicate in a host cell, long whiplike structure on bacteria, a mixture …

the concentration of water vapour in the air (8 letters), the process of breaking down food to release energy in plants and animals (11 letters), the …

muscle that helps your lungs pull in air and push it out, muscular tube through which food passes from the pharynx to the stomach, tiny air sacs in …

what theory did he develop?, whose house did he threaten to burn down?, what type of math did he develop?, who said he was the smartest person to ever …

evaporation of water from the surface of a leaf, the movement of water from an area of high to low water concentration through a semi-permeable …

immovable joints (pl.), slightly movable joints (pl.), freely movable joints (pl.), "bone-makers" (pl.), "bone-breakers" (pl.), …

the kind of birds that darwin noticed on the galapagos islands, blend in with surroundings, any variation that makes an organism better suited to its …

elements found on the left-hand side of the staircase, elements found on the right-hand side of the staircase, the name given to the group 7 elements, …

total number of protons and neutrons, a uncharged particle in an atom, an ion of the element with 16 protons, the electrons on the outermost energy …

a mixture that does not appear to be the same throughout, a mixture that appears to be the same throughout, uses the physical property of size to …

used to measure mass of an object, used to grab hot beakers, test tubes, and other equipment, measures precise liquid (2 words), protects your eyes (2 …

a region of space having a gravitational field so intense that no matter or radiation can escape, the displacement of spectral lines toward longer …

functional unit of the kidney responsible for urine formation, the process of removing waste and excess substances from the blood in the glomerulus, …

a gas that can make balloons float or explode into a fiery mess, most wires are made of this metal, common radioactive element referred to in movies, …

can cause cancer, lung damage, and immune system failure, this chemical takes years to leave the body, chemical that is a major part of gasoline, …

allows the neuron to conduct electrical impulses down to another neuron, or any type of cell by the release of signals into the synapse, protect the …

organelle highly present in b cells to produce antibodies, fluid in which pathogens are carried to lymphocytes, the site at which somatic …

allows for polymerization, contains one positive and one negative charge, very strong covalent bond, protein with more than one polypeptide chain, a …

another word for moon orbiting a planet, the spinning of a planet on its axis, axis tilted on its side, the largest planet, planets made mostly of …

the innermost layer of the git, middle layer of git made of connective tissue, a network of neurons that control digestive secretions and detect …

predicts molecular shapes based on repulsion between electron pairs, a unit that measures the amount of particles in a substance, the number of …

bone found in upper arm, used to immobilize a specific area of the body, inflammation of a joint, thighbone, flexible band that brings joints …

organelle in plant cells responsible for photosynthesis, rigid outer layer found only in plant cells, large central organelle in plant cells that …