characteristics of life
False, evolution occurs after many years/generations.
Explain sample size and why it is important in experimental design.
sample size is the amount in an experimental group. The sample size is important for the validity and accuracy of results. Ideally, you would want a larger sample size (experiment dependent).
when did the atmosphere start changing
when plants were introduced and bacteria started producing oxygen.
what type of selection is responsible for carrots that are red inside? artificial or natural selection?
Artificial selection
name the components of the blood and their functions
1. Red Blood Cells (most amount of cell in blood, carries oxygen)
2. Plasma (has the most water and suspended or dissolved items)
3. Platelets (involved in clotting)
4. White Blood Cells (WBCs) (involved with the immune system)
What instrument do you have to have to be able to observe cells?
A microscope.
Define the independent vs dependent variable (with an example)
The dependent variable depends on the independent variable.
For example, The growth (weight) of the mice depends on the type of food that they eat.
What is an important function of chloroplasts?
produce photosynthesis
A mutation in __________is a cause of variation.
DNA
Describe an example of how structure and function are important in the heart.
Ex. Arterial walls are thicker to withstand more pressure from the force of the heart pumping out to the body versus veins that are thinner and have valves to help counter gravity.
T/F Fire is Alive
False, fire is not alive. But it does exhibit the "growth" or arguable for "reproduction" characteristic of life.
quantitative involves a numerical measurement.
What is definition of a prokaryote? What is the difference of a eukaryote?
prokaryote: predate Eukaryotic cells, they are similar to the oldest bacteria and the first single cellular organism. DNA is everywhere, there size is similar to bacteria,
Eukaryotes, DNA is in the nucleus. Evolved after prokaryotes most likely by the endosymbiotic theory where the cells engulfed other single cellular organisms like mitochondria or chloroplast that became mutually beneficial.
The evolutionary fitness of an individual is measured most directly by
the number of its offspring that survive to reproduce
Differentiate open and closed circulatory systems.
Open- less efficient, drains into sinuses, less pressure
closed- more efficient, more pressure
What are some of the characteristics of life that you can observe, for example our classroom bunny Snuffles?
response to stimuli, growth and development,
Differentiate between the control and experimental group
An experimental group is the group that receives the variable being tested in an experiment. The control group is the group in an experiment that does not receive the variable you are testing.
Explain the atmosphere of Early Earth.
Without oxygen gas.
When a female peacock chooses a male peacock with a large, colorful tail, it is an example of what?
sexual selection
bonus..explain female choice, male choice, and male-male competition and what those changes would look like.
3.5 three distinct chambers with a partial septum.
Name the 8 characteristics of life
response to stimuli, reproduction, made up of cells, metabolism, evolves, growth and development, homeostasis, has a genetic code.
Name the steps of the scientific method
Questions, observations, hypothesis, planning experiments, analyzing data, reporting results
Draw a timeline of when humans emerged on Earth.
with a timeline of 4.5 billion years, humans are very close to present time.
Name and describe the three conditions necessary for natural selection to occur.
Struggle for existence, Variation and adaptation, and Survival of the Fittest.
What is the function of the circulatory system?
To transport nutrients and wastes throughout the body.