Chemical Reactions
True or False
The following statement describes a chemical reaction:
Baking soda (NaHCO3), citric acid (C6H8O7), and water (H2O) are mixed together and result in sodium citrate (Na3C6H5O7), water (H2O), and carbon dioxide (CO2)
True
Which type of cell is responsible for fighting infections?
White Blood Cell
Which organ is the tube that food travels through to get to the stomach?
Esophagus
Which type of organisms do cellular respiration and photosynthesis?
Plants
What percentage of DNA do children get from each parent?
50% from each parent
What is a reactant?
A molecule or molecules that go into a chemical reaction.
What part of the cell holds the genetic information?
Nucleus
Which body system is responsible for bring in oxygen and removing carbon dioxide from the body?
Respiratory System
Draw a simple food chain including a producer, consumer, and decomposer.
See drawings*
Which kind of reproduction is defined by having only one parent?
Asexual Reproduction
Which elements could be found in a molecule of glucose?
Carbon, Oxygen, and Hydrogen
Which part of blood is responsible for helping you to form blood clots so you stop bleeding?
Platelets
Which body system is responsible for transporting oxygen and nutrients throughout the body?
Circulatory System
In which organelle does photosynthesis take place?
Chloroplast
What is it called when the DNA code gets changed?
Mutation
If a chemical reaction occured in a closed system and some of the reactants turned into a less dense gas, how would the mass of the system change?
It would remain the same. Matter cannot enter or exit a closed system.
What do cells need in order to make more cells?
Nutrients (and oxygen)
This organ is where the majority of digestion and absorption takes place.
Small Intestine
Describe one way an atom can move from a biotic part of an ecosystem to an abiotic part of an ecosystem.
Sample response: A carbon atom can be exhaled by an animal into the air.
What are the chances of a black rabbit (RR) and a gray rabbit (Rr) having a white rabbit (rr) offspring?
0%
Chemical reactions that release heat are called what type of reactions?
Exothermic
What is the gel-like fluid inside all cells?
Cytoplasm
Write down the equation for cellular respiration.
Glucose + Oxygen --> Carbon Dioxide and Water
Write down the equation for photosynthesis.
(In the presence of sunlight)
What is the genotype of a rabbit that has the alleles rr for fur color?
Homozygous Recessive