Photosynthesis And Respiration Question Preview (ID: 56897)
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The process illustrated occurs within
a) ribosomes
b) mitochondria
c) vacuoles
d) chloroplasts
The interaction between guard cells and a leaf opening would not be involved in
a) feedback mechanisms
b) heterotrophic nutrition
c) maintaining homeostasis
d) diffusion of carbon dioxide
An enzyme known as rubisco enables plants to use large amounts of carbon dioxide. This enzyme is most likely active in the
a) chloroplasts
b) nucleus
c) mitochondria
d) vacuoles
Scientists studying ocean organisms are discovering new and unusual species. Which observation could be used to determine that an ocean organism carries out autotrophic nutrition?
a) The organism lives close to the surface.
b) The organism synthesizes enzymes to digest food.
c) Chloroplasts are visible inside the cells.
d) Digestive organs are visible upon dissection.
Which of the following statements concerning this process is correct?
a) The process represented is photosynthesis and the primary source of energy for the process is the Sun.
b) This process converts energy in organic compounds into solar energy which is released into the atmosphere.
c) This process uses solar energy to convert oxygen into carbon dioxide.
d) The process represented is respiration and the primary source of energy for the process is the Sun.
Which gas would most likely be found in the greatest amount in the bubbles?
a) oxygen
b) nitrogen
c) ozone
d) carbon dioxide
Since oxygen gas is being released in the experiment shown, it can be inferred that the plant is
a) carrying on active transport
b) releasing energy from water
c) producing glucose
d) making protein
What substance did the plant shown most likely absorb from the water for the process that produces the oxygen gas?
a) dissolved nitrogen
b) carbon dioxide
c) a hormone
d) an enzyme
In the transfer of energy from the Sun to ecosystems, which molecule is one of the first to store this energy?
a) DNA
b) fat
c) protein
d) glucose
Starch molecules present in a maple tree are made from materials that originally entered the tree from the external environment as
a) amino acids
b) enzymes
c) inorganic compounds
d) simple sugars
Which set of molecules is best represented by letters A and B?
a) A: carbon dioxide and water; B: glucose
b) A: oxygen and water; B: glucose
c) A: glucose; B: oxygen and water
d) A: glucose; B: carbon dioxide and water
Much of the carbon dioxide produced by green plants is not excreted as a metabolic waste because it
a) is too large to pass through cell membranes
b) can be used for the synthesis of proteins
c) can be used for photosynthesis
d) is needed for cellular respiration
This reaction is most directly involved in the process of
a) replication
b) heterotrophic nutrition
c) protein synthesis
d) reproduction
Organisms that carry out only heterotrophic nutrition are found in
a) rows A and C, only
b) row A, only
c) row B, only
d) rows A and B, only
Which change in a sample of pond water could indicate that heterotrophic microbes were active?
a) increase in glucose level
b) increase in ozone level
c) decrease in carbon dioxide level
d) decrease in oxygen level
In the experiment described, which procedure and resulting observation would help identify the jar that contains the euglena?
a) 1
b) 2
c) 3
d) 4
Which numbered set of terms best identifies the letters in the diagram below?
a) A - photosynthesis, B - inorganic molecules, C - decomposition
b) A - photosynthesis, B - organic molecules, C - respiration
c) A - respiration, B - inorganic molecules, C - photosynthesis
d) A - respiration, B - organic molecules, C - digestion
Which process illustrates a feedback mechanism in plants?
a) Chloroplasts release more oxygen in response to a decreased rate of photosynthesis.
b) Guard cells release oxygen from the leaf at night.
c) Chloroplasts take in more nitrogen, which increases the rate of photosynthesis.
d) Guard cells change the size of leaf openings, regulating the exchange of gases.
Which life functions are directly regulated through feedback mechanisms associated with the actions of the structures labeled X?
a) excretion and immunity
b) circulation and reproduction
c) respiration and photosynthesis
d) digestion and coordination
All life depends on the availability of usable energy. This energy is released when
a) respiration occurs in the cells of producers and high-energy molecules enter the atmosphere
b) cells carry out the process of respiration
c) organisms convert solar energy into the chemical energy found in food molecules
d) animal cells synthesize starch and carbon dioxide
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