Childress Fall
How many electrons are in the third energy level of a magnesium atom. Fig 6-1
2
Refer to table 6-1 of acid-base indicators. A small volume of dilute hydrochloric acid is placed in a beaker, and two drops of Fino phenylene are added. The solution remains colorless. A dilute solution of sodium hydroxide is an added drop by drop until a color change occurs. And what pH range does the color change occur? Describe the color change that occurs.
7 to 14 pH turns pink
From figure 1-2, predict the mass of the plant at the day 110.
80
Any substance that forms hydrogen ions in water is a(n)
Acid
Any structure behavior or internal process that enables an organism to better survive in an environment
Adaptation
Using figure 1 Dash two, what is the mass of the plant at the 50?
Around 38 to 39 grams
If you exhale carbon dioxide (C02) into a solution of bromothymol blue, the solution turns from blue to yellow. Does CO2 dissolve in water to form an acid or a base? Use table 6-1 of acid-base indicator's to answer
CO2 dissolves in water to form an acid because it lowers the pH of the bromothymol blue
An organic compound with a ratio of about two hydrogen atoms and one oxygen atom for each carbon atom is a(n)
Carbohydrate
Adams of two or more elements chemically combined are
Compounds
Two Adams that share electrons are held together by ———— bonds
Covalent
The series of changes that an organism undergoes during its lifetime
Development
What is the control?
Dish without saliva
Which test tube is the control? Explain its purpose.
Egg stays the same the whole time. Therefore test tube number one is the control
It's flow through ecosystems determines how organisms interact and powers out all life processes
Energy
The living and nonliving factors in an organism surroundings
Environment
Protein that speeds up an Chemical reaction
Enzyme
Over time, gradual changes and structures, behaviors, and internal processes of organisms result in diversity of species
Evolution
How does the graph in figure 1 -2 indicated that growth takes place from Day 20 today 60?
Exponential Period.
Counts or measurements are examples of data that are produced by descriptive research.
Fakse, quantitative research
A natural law is based on the analysis of data collected in a controlled experiment.
False, Results
The great northern coniferous forests are part of the tundra biome
False, Taigs
A pioneer community is usually the stable result of succession
False, climax community
Biologists generally form hypotheses using deductive reasoning
False, inductive reasoning
For ease of understanding, scientist report measurements using the English system
False, metric
A centrifuge is used to make small details of an object visible to a scientist
False, microscope
Light intensity is a major limiting factor of the tundra biome
False, temperature
In an experiment, the control group is used to test the effect of the independent variable.
False, the experimental group
A law is a possible explanation for a scientific question.
False, theory
The range of factors under which an organism functions and survives are it's limiting factors.
False, tolerance.
In figure 6-1 which atom forms an ion by the loss of electrons
Hydrogen
Which compound shown in figure 6-1 is formed by a covalent bonding
Hydrogen fluoride
What is an alternative hypothesis the student might have formed?
If no dog saliva is applied to a wound then the growth of the bacteria increases
What is the hypothesis on which the experiment is based?
If the HCl his present then the enzyme will digest protein.
Atoms of the same element with different numbers of neutrons are
Isotopes
Which compound shown in figure 6 Dash1 is formed by ionic bonding
Magnesium chloride because they don't share electrons
How might the student have measured the growth rate of the bacteria to be sure about whether there was a difference in the rate of growth in the twos dishes?
Measure how big it is each day by comparing sizes and weights.
all the chemical changes that occur within an organism
Metabolism
When a grouse eats berries, the berry seeds are eliminated as waste materials and maybe dropped in another part of the forest where they may sprout and eventually grow into New berry plants. How would you classify the relationship between the berry plant and the grouse? Explain your reasoning. Referred to figure 2-3.
Mutualism because both organisms are benefit it.
Biology is a continuous search for information about the natural world
Nature of science
The smaller subunits the make up nucleic acids are
Nucleotide
Molecule with unequal distribution of charge
Polar molecule
Large molecule formed when many smaller molecules bond together
Polymer
What part of the scientific method is illustrated instep a? Step be?
Question, hypothesis
The process whereby an organism produces more of its own kind
Reproduction
Organisms depend on an internal and external systems that interact and complex ways to help them perform their life functions
Systems and interactions
How could you describe the niche and habit of the Marmot? Referred to figure 2 -3
The Marmot eat grasses and are the prey of the grizzly bear.
What is the dependent variable!
The bacteria growth
Why might the exponential design and Stephanie be a better test of the students hypothesis then the design used in step see?
The bacteria is added, not grown on the dog (meaning it would be more realistic)
Using figure 1 Dash two, what would you predict about the height of the plant during this time,
The corn plant will grow at an exponential rate.
Describe the growth rate of the plant during the final stage compared with the rate during the exponential., As shown in figure 1-2.
The growth rate of the plant slows down to eventually stop once the corn plant reaches carrying capacity.
Where is the hypothesis correct? Why?
The hypothesis is correct because pepsin did cause a reaction
Why were both dishes covered?
To prevent experiment to be affected by contaminated air
A sonogram is a picture of sound
True
Age, physical condition, and stage in the lifecycle may all influence an organisms limits of Torrance
True
Biologists discover problems by observing the world around them.
True
Limiting conditions usually fall midway between an organisms limits of tolerance
True
Phytoplankton are usually found concentrated in the euphoric zone of the ocean
True
The liter is a metric unit of volume
True
Whether application of science to everyday life are considered good, bad, right, or wrong comes under the category of technology
True
Which test tube or tubes are the experimental group? Why do you say so?
Two, three, four or experimental group because they test the dependent variable
Although different organisms interact with and ecosystems to form a stable system, all living things share the same characteristics of life
Unity within diversity
Using table 1 -2, how does the mother's rate of weight gain compare with the rate of weight gain of the developing fetus?
When the mother gains weight, the fetus does too
From the experiment, does HCl digestprotein? How do you know?
Yes, it increases the digestion rate when mixed with protein.
Glucose polymer that forms the cell walls of plants
cellulose
The gradual change in the characteristics of a species overtime
evolution
A variety of structural and behavioral adaptations help organisms regulate their internal environment
homeostasis
An organisms tendency to maintain a stable internal environment
homeostasis
Center of an atom
nucleus
Bond formed between two amino acids
peptide
Mixture in which one substance is distributed evenly in another
solution
Herd animals are usually concentrated in the forest biome.
Fslse, grassland
During which periods does the greatest amount of growth take place as shown in figure 1-2.?
The graphs grows slowly, not exponentially.
Write a conclusion to the experiment. Base your conclusion on the experimental results shown in table 6 -2
The reaction rate Of digestion is highest win pepsin and Hydro chloric acid are combined with the egg.
What is the independent variable in the student's experimental design?
The saliva of the dog
