Characteristics of Life
Macromolecules
Water Properties
Enzymes
Experimental Design
100
Organisms transfer their genetic information from one generation to the next creating diversity which makes populations stronger.
Reproduction
100
Polymers are large chains made from repeating these simple molecules
What are monomers
100
Molecules of water are held together by a strong force. The property of water that causes it to have a high boiling point compared to other small molecules is due to the presence of this kind of bond between molecules
hydrogen bonding
100
What is X?
ENZYME
100
This is an educated guess about a scientific phenomenon that is based on observations and previous knowledge
What is a hypothesis
200
Pulling your hand away from something hot, or a plant growing towards sunlight is an example of this characteristic of life
What is response to stimuli
200
This macromolecule consists of sugars such as glucose and provides short term energy.
What are carbohydrates?
200
hydrogen bonds between the slightly negative side of one water molecule and the slightly positive side of another water molecule hold water molecules together
cohesion & surface tension
200
Most enzymes acts as this, speeding up a reactions without becoming part of the products
What is a catalyst
200
This is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed, preferably using a written, pre-defined, protocol of observations and experiments.
What is a scientific theory
300
This molecule is the most important currency for the cells. It is made through cellular respiration and metabolism.
ATP - adenosine triphosphate (energy)
300
This macromolecule is responsible for building hair, skin, nail health, and helps your immune system. The enzymes speed up reactions.
Proteins
300
Water can absorb a lot of heat before its temperature changes. This property helps regulate temperature on Earth
high specific heat
300
Changes in temperature or pH can cause an enzyme to change shape and function. A process that is called...
What is denaturing
300
In an experiment, this is the "normal" group that provides a standard for comparison
What is the control group
400
Organisms will adapt or change over time with the environment due to natural selection as part of this process
Evolution
400
These are important in the cell membrane because they have both a polar (hydrophilic) and a nonpolar ends (hydrophobic). They store energy for a long period of time.
Fatty Acids - Lipids
400
If you eat too much sugar and feel sick, you should drink water because it is a...
universal solvent - because of its polarity
400
Which row in the chart below contains correct information concerning fast synthesis of molecules?
3
400
An experiment is carried out to determine how different pH values of soil will affect the growth of tomato plants. In this experiment, the dependent variable could be the
1) height of the tomato plants
2) pH of the soil
3) specific variety of tomato plants used
4) pH of enzymes in tomato leaf cells
1) height of the tomato plants
500
A small lizard spends the morning hours lying in the sunlight until its body temperature rises. Later on in the day, the lizard rests in a shady area until its body temperature cools. This type of behavior is important to
homeostasis
500
All biological macromolecules are made up of carbon, oxygen, and hydrogen. Proteins also contain nitrogen and this class of macromolecules contain phosphorus as well. It is in all cells.
nucleic acids - DNA and RNA
500
Water’s ability to form hydrogen bonds contributes to this characteristic that allows organisms to stay cool during evaporation, such as through sweating or transpiration in plants.
evaporative cooling
500
The graph represents the effect of pH on 3 different enzymes at normal body temperature.
The graph illustrates that enzymes 1, 2, and 3. Which one represents an acid?
Enzyme 1 = pH of 3
500
A student wanted to investigate the effect of light on the rate of ripening of tomatoes. She set up four pots of the same size with identical amounts of soil, water, and type of tomato plants. Each plant was exposed to a different intensity of light as shown in the table below.
What is the IV?
Light intensity