Surprise
What occurs during metaphase of a cell cycle?
Chromatin line up at the center of the cell
What are the three main subatomic particles of an atom and their charges?
Protons +
Neutrons neutral
Electrons -
Difference between abiotic and biotic
Abiotic = nonliving
Biotic = living
What is a primary Producer?
Uses chemical energy like the sun to makes its own food. These organisms are the base of the food chain.
What are the 4 types of macromolecules?
Carbohydrate
lipids
proteins
Nucleic acids
Name two characteristic of life
made up of cells
DNA
Growth and development
Energy
Response to environment
Homeostasis
Evolution
What is a catalyst?
Enzyme that speeds up a chemical reaction
What is the difference between climate and weather. Give one example for each.
Climate is patterns and averages of various conditions such as temperature and precipitation over many years.
Weather is a change of temperature and precipitation etc, on a day to day basis.
Name one Biome
Grassland
Desert
Tropical rainforest
boreal forest/Taiga
Savanna
tundra
temperate forest
shrubland
Coniferous forest
What are the base pair rules for DNA?
A pairs with T
G pairs with C
In which phase of the cell cycle does DNA replication occur.
S phase (synthesis)
What is an activation energy?
The amount of energy required for a chemical reaction to occur
Explain the greenhouse effect.
Trapped heat due to gases like carbon dioxide and methane in the atmosphere.
Name four biomes not stated before
Grassland
Desert
Tropical rainforest
boreal forest/Taiga
Savanna
tundra
temperate forest
shrubland
Coniferous forest
Explain diffusion of solutes like potassium or Sodium.
Solutes move from high concentration to low concentration.
Define homozygous and heterozygous.
Provide alleles as an example.
Heterozygous Bb
What type of bonds hold two water molecules together
Hydrogen bond
What is the difference between a food chain and a food web?
food web can show feeding interactions of several organisms.
Food Chain a series of organisms in which energy is transferred from one organism to another.
What is the difference between a population, community and a ecosystem.
Population includes one species
Community includes several species (populations)
Ecosystem includes abiotic and biotic factors
What are the two reactions in Photosynthesis?
Light Dependent and Light independent reaction
What is the function of the mitochondria?
Produces ATP for cellular work
What is ATP? How is it used?
It energy used by cells to do cellular work
What is an autotroph and heterotroph?
Autotrophs produce its own food
Heterotrophs eats other plants or organism for energy
What type of organism is at the bottom of an energy pyramid?
Primary producers
What is the equation of photosynthesis and Cellular Respiration.
Photosynthesis
Carbon dioxide + water + ATP (Sunlight) --> Glucose + oxygen
Cellular Respiration
Glucose + oxygen ----> Carbon Dioxide + water + ATP