Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
What is the rule of oxygen in cellular respiration?
|
It is the final electron acceptor in the electron transport chain.
|
|
When the poison cyanide blocks the electron transport chain, glycolysis and the citric acid cycle soon grind to a halt as well. Why do you think they stop?
|
They run out of NAD+ and FAD.
|
|
A biochemist wanted to study how various substances were used in cellular respiration. In one experiment, he allowed a mouse to breathe air containing O2 "labeled" by a particular isotope of oxygen. In the mouse, the labeled oxygen atoms first showed up in
|
water, H2O
|
|
In glycolysis,________ is oxidized and ___ is reduced.
|
glucose . . . NAD+
|
|
What is the most immediate source of energy for making most of the ATP in your cells?
|
the diffusion of hydrogen ions across a membrane
|
|
What conversion represents a reduction reaction?
|
pyruvate > lactate
|
|
Which of the three stages of cellular respiration is considered the most ancient?
|
Glycolysis is considered the most ancient because it occurs in all living cells and doesn't require oxygen or membrane-enclosed organelles.
|
|
Photosynthesis consumes _____ and produces _____.
|
H2O . . . O2
|
|
What are produced by reactions that take place in the thykaloids and consumed by reactions in the stroma?
|
ATP and NADPH
|
|
In photosynthesis, _______ is oxidized and _____ is reduced.
|
water . . . carbon dioxide
|
|
Why is it difficult for most plants to carry out photosynthesis in very hot, dry environments such as deserts?
|
The closing of stomata keeps CO2 from entering and O2 from leaving the plant.
|
|
When light strikes chlorophyll molecules, they lose electrons, which are ultimately replaced by
|
splitting water
|
|
If an intestinal cell in a grasshopper contains 24 chromosomes, a grasshopper sperm cell contains ____ chromsomes.
|
12
|
|
What phases of mitosis is essentially the oppostie of prophase in terms of nuclear changes?
|
telophase
|