BioBrain
Why does water split during photosynthesis?
The hydrogen protons are used for energy in the ETC.
Why do insertion mutations often disrupt protein functions?
Change in amino acid sequence
How can active transport proceed against gradients?
Using ATP to drive the reaction
Describe nitrogen fixation - be sure to use the chemical formulas when appropriate.
N2 Nitrogen in atmosphere, at ground level nitrogen fixing bacteria change it to NH3.
What is Ms. Maxwell's fitness level?
2
How does genetic drift oppose natural selection?
Founder effect - new environment different pressures.
Bottleneck - luck of survival and alleles or genes survive.
Why doesn't relatedness equal physical similarity?
DNA doesn't lie!!!!
Why can mutated alleles persist under strong selection?
Why can increased resources fail to boost population growth?
Other factors such as predators limit the population.
What is the surface area formula and how does size hinder cellular exchange.
L x W x Area or 6 if cube. Higher SAV is most efficient.
When does water vapor turn to a liquid?
During condensation.
Why does facilitated diffusion require membrane proteins?
To regulate what goes in and out of cell to maintain homeostasis.
In Georgia, what is the largest contributor of phosphorus to water bodies?
Agriculture and wastewater.
What limits ATP yield in fermentation?
The presence of oxygen.
What defines a biomes climate?
Long term patterns of temperature and precipitation
These two scientist stole the Nobel Peace prize from a dying woman. What are their names and what did they steal?
Watson and Crick. Stole her X-rays of DNA structure and claimed it as their own.
How does matter cycle?
From one organism to another - biogeochemical cycle
How do branch lengths reflect evolutionary change in a phylogenetic tree?
Represent genetic change through natural selection.
How does allosteric regulation (think active site) alter enzyme activity.
Wrong shape and substrate cannot attach.
What macromolecule can be considered addictive and should be consumed in moderation?
Carbohydrates
How can natural selection reduce a traits frequency while increasing mean fitness?
It is linked to fitness - better adaptations to environmental conditions - survive and reproduce more.
What is Ms. Maxwell's favorite color?
PINK!!!
How does wavelength affect photosynthesis?
Green pigment is absorbed best.
Which of the units we studied this year does Ms. Maxwell know the most about?
Biotechnology!!!
Finish this sentence:
Enzymes increase reaction rate, not the ________________ .
product, outcome.