Regent questions - Science 1
a
A cell in a left of a corn plant contains more chloroplasts than a cell in the stem of a corn plant. Based on this observation, it can be inferred that, when compared to the cell in the stem, the cell in the leaf a. synthesizes more sugar b. has a higher chromosome count c. produces fewer proteins d. uses less carbon dioxide
c
A cell structure involved in converting energy stored in organic molecules into a form used by animal cells. The movement out of the cell is a. carbon dioxide and sugar b. oxygen and ATP c. ATP and carbon dioxide d. oxygen and sugar
d
A characteristic common to both diffusion and active transport is that a. enzymes are required b. oxygen is moved across a membrane c. ATP is needed d. the movement of molecules occurs
c
Autotrophs differ from heterotrophs in that only autotrophs a. require carbon dioxide for cellular respiration b. release oxygen as a product of cellular respiration c. synthesize nutrients using carbon dioxide and water d. break down sugars to assemble other molecules
b
In a controlled experiment, what should be the relationship between the control group and the experimental group? a. they should be different in size b. they should resemble each other in at least two respects c. they should not be similar in any respect d. they should be identical in all respects except one
a
Natural selection produces changes most quickly in a. species with short reproductive cycles b. individual pathogens killed by antibiotics c. complex multicellular organisms d. individuals that produce a small number of offspring
c
Photosynthesis and respiration are alike in that they both a. required the Sun as a direct source of energy b. result in the production of glucose molecules c. require specific catalysts d. occur within mitochondria
a
Which life process carried out by a green plant consists of oxygen and food going in energy released carbon dioxide and water leaving a. respiration b. photosynthesis c. digestion d. replication
c
Which process uses energy to combine inorganic molecules to synthesize organic molecules? a. respiration b. digestion c. photosynthesis d. decomposition
c
Which structures regulate water loss and gas exchange in the leave of plants? a. vacuoles b. chloroplasts c. guard cells d. mitochondria
autotrophs
organisms that make their own food
