11 Bio Module 1 round up!

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 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.

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?

• 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.

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

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.

Which statement best describes how channel and carrier proteins in the plasma membrane are similar?

• Both allow for the flow of molecules into and out of a cell.

• Both directly connect the membrane to the nucleus of a cell.

• Both use energy to continuously move water molecules out of a cell.

• Both cause the phospholipid bilayer to form a rigid membrane for a cell.

Organisms that depend on other organisms for food.

• ominvore

• prokaryotic

• receptores

• heterotrophs

A cell with distinct, membrane-bound organelles.

• herbivore

• mutation

• eukaryote

• autotrophs

A cell that has no distinct, membrane-bound organelles.

• prokaryotic cell

• eukaryotic cell

• microorganisms

• catabolism