A scientist observes a single-celled organism with several long, whip-like tails. Which function do the whip-like tails most likely perform for the organism?

Biology Keystone Review 1

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History
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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
movement through an environment
2.
FLASHCARD QUESTION
Front
Which statement describes the property of water that most supports the transportation of water to all parts of a tree? Water forms a crystalline structure when it freezes., Water dissolves fewer substances than any other liquid., Water has strong attractions to itself and many other molecules., Water can absorb large amounts of energy with minimal temperature changes.
Back
Water has strong attractions to itself and many other molecules.
3.
FLASHCARD QUESTION
Front
Which process best describes the assembly of proteins from amino acids? Options: Atoms are linked to form a compound., Monomers are linked to form a polymer., Atoms are added to a monomer until it becomes a polymer., Molecules are added to a compound until it becomes a monomer.
Back
Monomers are linked to form a polymer.
4.
FLASHCARD QUESTION
Front
Which biological molecules are most likely represented by molecules 1 and 2? Options: molecule 1: lipid, molecule 2: nucleic acid; molecule 1: lipid, molecule 2: protein; molecule 1: carbohydrate, molecule 2: nucleic acid; molecule 1: carbohydrate, molecule 2: protein
Back
molecule 1: lipid, molecule 2: nucleic acid
5.
FLASHCARD QUESTION
Front
Which statement best describes a relationship between enzymes and a simple biological reaction? Options: Enzymes will increase the amount of substrate formed during a biological reaction., Enzymes will decrease the amount of substrate formed during a biological reaction., A reaction rate can be increased when the specific enzyme for a biological reaction is present., A reaction rate can be decreased when multiple enzymes for a biological reaction are present.
Back
A reaction rate can be increased when the specific enzyme for a biological reaction is present.
6.
FLASHCARD QUESTION
Front
Microbes in the digestive system break down food, which allows nutrients to be absorbed by the body's cells. How will these body cells most likely be affected in an individual suffers from a high fever? Options: The body cells will swell because an increase in temperature promotes greater water absorption. The body cells will stop absorbing nutrients because the heat melts the lipid bilayer of the plasma membrane. The body cells will shrivel because the heat eliminates the chemical gradients on either side of the plasma membrane. The body cells will bring in fewer nutrient molecules because the transport proteins lose their proper shape due to the high temperature.
Back
The body cells will bring in fewer nutrient molecules because the transport proteins lose their proper shape due to the high temperature.
7.
FLASHCARD QUESTION
Front
Four students classified the main energy conversions that occur during photosynthesis and cellular respiration. Which student best classified the energy conversions that occur in the two processes?
Back
Student 4
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