Heart
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)
T/F Evolution can be observed within a lifetime of an organism
False, evolution occurs after many years/generations.
Why is ice less dense than water?
Due to the structure of the water molecule, when water freezes, the structure locks in and spreads out, making it less dense than water.
A mutation in __________is a cause of variation.
DNA
Hydrogen bonding is an example of a _____bond.
weak
Describe an example of how structure and function are important in the heart.
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.
Explain
False, fire is not alive. But it does exhibit the "growth" or arguable for "reproduction" characteristic of life
What properties of water are involved in capillary action?
cohesion and adhesion
The evolutionary fitness of an individual is measured most directly by
the number of its offspring that survive to reproduce
when electrons are shared between a bond, this is a ______bond.
covalent
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,
Why does NACL, salt and many other important substances dissolve in water?
Because of the polarity of the water molecule, oxygen is slightly negatively charged, which will attract to other positively charged polar substances. Hydrogen also attracts to other negatively charged substances. This explains the property of solvency.
what type of selection is responsible for carrots that are red inside? artificial or natural selection?
Artificial selection
Define an isotope
An element of the same number of protons and electrons, but a different number of neutrons
How many heart chambers does a snake have?
3.5 three distinct chambers with a partial septum.
This molecule, produced from the digestion of carbohydrates, is the main energy source used by cells to carry out metabolism.
Glucose
Sweating is an example of this type of property
high specific heat capacity
A beneficial variation
Adaptation
Name three biological uses for isotopes
carbon dating, element tracing, irradiation of produce and radiation in cancer cell treatment.
What is the function of the circulatory system?
To transport nutrients and wastes throughout the body.
Name the 8 characteristics of life
response to stimuli, reproduction, made up of cells, metabolism, evolves, growth and development, homeostasis, has a genetic code.
List the properties of water
1. Cohesion
2. Adhesion
3. High Heat Capacity
4. Solvency
5. Density of Ice
Name and describe the three conditions necessary for natural selection to occur.
Struggle for existence, Variation and adaptation, and Survival of the Fittest.
Name the subatomic parts of an atom with their charge and location.
electrons (neg) located surrounding the nucleus
protons (positive) in the center of the nucleus
neutrons (neutral) in the center of the nucleus