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?

• defense against predators

• movement through an environment

• detection of the location of a light source

• measurement of atmospheric temperature changes

Which process best describes the assembly of proteins from amino acids?

• 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.

Trees are typically able to transport water from their roots to their stems and leaves. 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.

Which biological molecules are most likely represented by molecules 1 and 2?

• 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

Which statement best describes a relationship between enzymes and a simple biological reaction?

• 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.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

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.

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.HS-LS1-5

NGSS.HS-LS1-7

A scientist observed that during the course of a chemical reaction the number of ATP molecules was reduced. What did the scientist most likely learn from the observation?

• The reaction produced water.

• The reaction consumed water.

• The reaction caused an output of energy.

• The reaction required an input of energy.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which of the following is most involved in providing structure for a plasma membrane?

• the number of protein channels embedded in the membrane

• the types of carbohydrates attached to proteins on the surface

• the types of proteins that are attached to the surface of the membrane

• the arrangement of the hydrophobic and hydrophilic ends of the phospholipids

What cell process is best modeled by the diagram?

• osmosis

• exocytosis

• passive transport

• facilitated diffusion

A cell in the leaf of a green plant performs both photosynthesis and cellular respiration, often at the same time. Which statement best describes how these processes are related to each other?

• Both processes produce carbon dioxide.

• Both processes require energy directly from the sun.

• Products of one process are used as some of the reactants for the other process.

• Thermal energy from one process is used as the energy source for the other process.

Tags

NGSS.HS-LS2-5