Unit 1/2
100
Describe secondary protein structure.
Coils or pleated sheet
100
Where do allosteric inhibitors bind to an enzyme?
They bind anywhere that is not the active site./Allosteric site.
100
How does meiosis create genetic diversity?
Crossing over, random assortment and random fertilization.
100
p2 represents what in a hardy-weinberg problem?
p2 represents homozygous dominant.
100
Give an example of a density-dependent factor and a density-independent factor.
Density-dependent: food, predators, shelter, migration
Density-independent: weather/climate
200
What is the monomer of Carbohydrates?
Monosacchirides
200
True of False: In cellular respiration, the electron transport chain pumps hydrogen into the matrix.
False: Hydrogen is pumped into the inter-membrane space.
200
What is the enzyme that prevents supercoiling of the DNA?
Topoisomerase
200
What does analogous structures mean?
Analogous structures mean that two organisms have similar function, but no similar structure.
200
What is Allopatric speciation?
Allopatric speciation is when there is a geographical barrier that causes speciation.
300
What molecules traditionally make up lipids?
Carbon, Hydrogen, oxygen and phosphorus.
300
Fill in the blank: When positive feedback occurs, the signal is ---------?
Amplified
300
Name the purines and what is the difference between purines and pyrimidines?
Adenine and Guanine; Purines have a two ring structure and pyrimidines have a one ring structure.
300
How much energy is lost between trophic levels?
10% of the energy is lost.
300
What happens when a cell enters G0 phase?
G0 phase is when the cell takes a pause in the cell cycle.
400
True or False:Compartmentalization make cells less efficient.
False: Compartmentalization make cells more efficient.
400
Cell signaling is how cells communicate. What is the cellular communication called where cells communicate over short distances?
Paracrine signaling
400
True or False: In transcription, the template strand is in 3' to 5' orientation.
True
400
What is commensalism?
Commensalism is when one species benefits and the other is not affected.
400
How much ATP is made in glycolysis?
About 2 ATP molecules.
How does osmoregulatory mechanisms contribute to the health and survival of an organism?
Osmoregulatory mechanisms help maintain growth and homeostasis.
500
In the light-independent reaction what is the enzyme that helps break down carbon called?
RuBisCo
500
Errors in meiosis that cause cells to have an abnormal amount of chromosomes is called?
Nondisjunction
500
What are the 5 mechanisms of evolution?
Genetic drift, sexual selection, gene flow, mutations, natural selection.
500
What is the definition of Biotic?