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SCIENCEEEEEE vocab

study :-<

question/termanswer/definition
circulatory system has the arteries, veins, capillaries, blood and heart.
can water move into the cell? yes, water is able to pass through the cell membrane but not salt.
osmosis the movement of water from areas of high concentration to low concentration across cell membrane
diffusion the movement of molecules from high concentration to low concentration.
what did yeast use sugar for? in a chemical reaction for energy to grow and reproduce.
carbon dioxide a waste product of chemical reaction that inflated the balloon.
can cells respire? yes, it is called cellular respiration.
is there less oxygen in the air we exhale? yes
the candle with inhaled air in the beaker lasted longer than the candle with the exhaled air in the beaker. what does this mean? this means that there was more oxygen in inhaled air then in exhaled air.
why did the candle with the exhaled air burn out quicker? because there was less oxygen inside.
respiratory system helps you take air into and out of your lungs.
where does the oxygen go after lungs? through alveoli and into the bloodstream.
are the respiratory and circulatory systems connected? yes
what do red blood cells do? they take oxygen to the cells in your body.
food burned in a chemical reaction creates what? thermal energy
in cells, there is a chemical reaction involving glucose and oxygen that releases what? energy
what organs are in the digestive system? tongue, teeth, salivary glands, esophagus, stomach, small intestine, and large intestine
mechanical digestion the physical breaking down of food into smaller pieces which is carried out by the chopping and grinding of teeth, the movement of food with the tongue, and the squeezing of the stomach.
chemical digestion the changing of food particles into new substances through the interaction with chemicals like acids and enzymes found in the salivary glands (amylase) and stomach (HCl and pepsin), and in small intestine (bile).
what is the difference between diffusion and osmosis? diffusion happens when any molecule moves from an area of higher concentration to an area of lower concentration but does not necessarily move through a membrane.
what are the main functions of the small intestine for digestion? they break foods down into their smallest/simplest molecular form and the villi allows maximum absorption of food molecules into the bloodstream.
what happens to food molecules after reaching the small intestine? they get absorbed into the bloodstream through the villi of the small intestine where they are taken to cells for energy.
what is the relationship between the digestive system and circulatory system? the organs of the digestive system break foods down physically and chemically to small food particles that are then absorbed into the circulatory systems blood vessels, which transports the food particles to all of the cells of the body to use for energy
what is the relationship between the respiratory system and circulatory system? the organs of the respiratory system take in and clean the air so that oxygen can diffuse into the blood/blood vessels of the circulatory system which then transports the oxygen to all of the cells of the body to use for converting food into energy.
what are the multicellular organisms, SMALLEST TO LARGEST? cells, tissues, organs, organ systems, organism.
why did test tube #4's balloon blow up? because the yeast in test tube #4 used sugar as food in a chemical reaction which released carbon dioxide gas which inflated the balloon. the yeast used the sugar as energy to grow and reproduce.
what evidence supports that we exhale less oxygen than we inhale? the flame in the beaker with inhaled air burned longer than the beaker with exhaled air. a flame needs oxygen to burn so the beaker with exhaled air had less oxygen because it burned out quicker than the beaker with inhaled air.
what evidence supports the claim that you exhale more carbon dioxide than you inhale? When we blew into the cup with BTB indicator it turned green, indicating that we exhale CO2's gas. When the cup with the BTB was in the open air it did not turn yellow/green meaning there was not a lot of CO2 in the air we breathe in.
what does BTB indicate? if carbon dioxide is present.
what color does BTB turn if carbon dioxide is present? green
what is able to pass through the cell membrane? oxygen, water, and glucose (sugar)
what is NOT able to pass through the cell membrane? starch and salt
why is the cell membrane semi-permeable? because only smaller molecules can pass through the membrane. bigger molecules like salt and starch cannot pass through.
what are the characteristics of all living things? if they can/have.. respond to stimuli, growth, reproduce, metabolism, and are made up of cells.
what is the connection between oxygen and food? oxygen and glucose are used in a chemical reaction in each and every cell in the body to release energy. oxygen breaks down the sugar. this process is known as cellular respiration.
what happens to oxygen molecules after they leave the alveoli? they diffuse out of the alveoli and into the capillaries of the circulatory system.
which part of blood carries glucose molecules to cells? plasma
why do you exhale less oxygen than you inhale? because some of the oxygen is used in a chemical reaction with glucose in the cells of the body to release energy.
why do you exhale more carbon dioxide than you inhale? carbon dioxide gas is a waste product of the chemical reaction between oxygen and glucose in our cells. our body does not need it so it is transported back to the lungs where we exhale it.
Created by: 29provost
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