Electricity
What instrument measures voltage?
Voltmeter
Define the word "producer".
An organism that can produce its own energy
How many energy shells does an Aluminum atom have?
2
Where are ribosomes made?
Nucleolus
What is the total voltage of three 1.5V cells in parallel?
1.5 V
What happens to current if you increase voltage? (Resistance is constant)
Current will also increase
What is the main way humans affect the carbon cycle?
Burning of fossil fuels releases pollution which increases atmospheric carbon.
Write the name for the compound K3N
Potassium nitride
During what phase of cell division is a karyotype done?
Metaphase
During what phase do sister chromatids separate in meiosis?
Anaphase II
Draw 3 cells in parallel, connected to 2 resistors in parallel, and a switch and bulb in series.
See drawing.
What is the role of a decomposer in an ecosystem?
Recycling nutrients from dead organisms back into the soil/atmosphere.
Draw the Bohr diagram of the aluminum ion.
p = 13
n = 14
e = 10
Don't forget brackets & charge!
A cell starts with 4 chromosomes. Draw what telophase would look like (mitosis).
Cytokinesis beginning. Nuclear membrane reappearing. 4 chromosomes (single chromatids) in each nucleus.
What is the name of the compound FeCl2?
Iron (II) chloride
A 92 ohm resistor has the current of 78 mA. What is the voltage?
7.176 V
Name the 4 biogeochemical cycles we studied.
Water, Phosphorus, Carbon, Nitrogen
Write the formula for Nickel (III) sulphide
Ni2S3
An individual has XY chromosomes and 3 copies of chromosome 21. What does this tell you about them?
Male with Down's syndrome
A squid gamete has 18 chromosomes. How many chromosomes would be in a squid's heart cell?
36 chromosomes
A circuit has a total voltage of 18V and total current of 0.15A. There are 3 resistors in series with 24 ohms, 43 ohms, and an unknown resistance.
What is the unknown resistance?
53 ohms
If the energy availability at the producer level of a food chain is 20 000 kCal, how much energy will be available at the tertiary consumer level?
20 kCal
How many atoms are in magnesium acetate?
Mg(CH3COO)2 = 15 atoms
Name three differences between meiosis & mitosis
Meiosis has 2 divisions, mitosis has 1
Meiosis has crossing over
Meiosis produces 4 gametes, mitosis 2 daughter cells
Mitosis daughter cells are genetically identical, meiosis they are not.
Etc...
You like listening to music while you're studying, and you wonder what type of music is the best type of study music?
If you were to design an experiment to test this question, what would be the independent variable, the dependent variable, and 2 control variables?
IV = type of music
DV = test results/grade
CV = time spent studying, subject, same person, music volume, same test, etc.