Unit 2 week 2 bio
Refer to Figure 7-1. According to the figure, the most effective wavelength for photosynthesis is in the alga that is at ____ nanometers.
475
According to the first law of thermodynamics,
All of these are true
The process of breaking down ATP to ADP is termed-
An exergonic reaction.
Billy Bob's grandmother is making pickles. She puts slices of fresh cucumber into a solution of sugar, salt, and vinegar. The cucumber slices gets smaller. The solution of sugar, salt, and vinegar is-
Hypertonic
The correct operational sequence of the three processes listed below is I.glycolysisII.ETPIII.Krebs cycle
I >>> III >>> II.
The yield from glycolysis includes all EXCEPT
CO2
The dispersal of ink in a beaker of water is an example of-
Diffusion
The exchange of oxygen and carbon dioxide between body cells and the blood occurs as a result of-
Diffusion
Which of the following describes the differences between diffusion and facilitated diffusion through a cell membrane?
Diffusion moves particles through the phospholipid bilayer of a cell membrane, but facilitated diffusion moves particles through transport proteins.
Sugar molecules can enter cells through the process of-
Endocytosis
When materials pass into and out of the cell at equal rates, there is no "net" change in concentration inside the cell. The cell is in the state of:
Equilibrium
The diagram below shows three cells placed into salt solutions. The dots represent the concentration of salt inside and outside the cell. In the figure, more dots means higher salt concentration. Osmosis will cause the cell in solution A to do which of the following?
Lose water
What would happen to a freshwater protozoan if removed from its normal habitat and placed into a saltwater pool?
Loss of water through osmosis.
Which of the following functions does active transport perform in a cell?
Moving substances against a concentration gradient.
What process is represented by the diagram below?
Osmosis
Which of these is not usually released through exocytosis?
Oxygen molecules
White blood cells use ________ to get rid of foreign particles in the blood.
Phagocytosis
A cell with 5% solute concentration is placed in a beaker with 1% solute concentration. What will happen to the cell over time?
The cell will gain water and expand.
While cleaning a saltwater aquarium, students placed the aquarium plants in a container of distilled water. What effect will this have on the plants?
The plant cells will swell.
Spartina, a cord grass, grows in salt marshes and stores salt in its roots. This makes the salt concentration in its roots greater than that of the surrounding water. What most likely occurs in response to this salt concentration in the roots?
Water moves into the roots.
The illustration shows details of
alcoholic fermentation.
Intermediates in the breakdown of ____ can be diverted into glycolysis and the Krebs cycle.
all of these
Which of the following statements is(are) true of pigments?
all of these
When a pigment molecule absorbs light energy,
an electron from an inner energy level may move to another level.
Refer to Figure 8-1. The Krebs cycle is represented by the letter
b
The main source of energy in the normal human diet is
carbohydrates.
The carbon source for organisms that derive their energy from photosynthesis is
carbon dioxde
The greatest number of ATP molecules is produced in
electron transfer phosphorylation.
When glucose is used as the energy source, the largest amount of ATP is produced in
electron transfer phosphorylation.
ATP is
energy currency of the cell
Excess glucose in the human diet can result in accumulations of
fats
Where in a plant cell is chlorophyll found?
in the thylakoids
Under anaerobic conditions, muscle cells produce
lactate
Fermentation
may occur in a muscle under anaerobic conditions.
The Krebs cycle takes place in the
mitochondria
Refer to Figure 7-1. The experiment was designed to determine --
none of these
The basic raw material(s) needed by plants for photosynthesis is(are)
none of these
The electron transfer chain is located
on the inner membrane of the mitochondria.
The conversion of solar energy to chemical energy occurs during
photosynthesis.
The chemical that enters the mitochondria to continue respiration is
pyruvate.
Excess glucose in most complex plants is stored as
starch
Air enters and leaves through the
stomata
Lactate production in muscle cells is
temporary, due to oxygen deficiency, and an NAD+ regenerator.
If anaerobic pathways follows glycolysis,
the two NADH molecules produced during glycolysis will (depending on the organism) be used to reduce pyruvate to either lactate or ethanol and CO2.
The internal membrane system of the chloroplast is the
thylakoid.
cyclic pathway of ATP formation noncyclic pathway of ATP formation carbon dioxide fixation the PGA to PGAL conversion the formation of glucose
uses an electron.. produces atp... uses ribuloses... uses atp and... detatches two...
