Name:_______________________
Period:_________
Unit 1 Review
1 Under what laboratory conditions are these precautions applicable?
I. Wear gloves, aprons, and goggles.
II. Work in a well-ventilated area.
III. Use caution with sharp objects.
2 Which statement describes the major role of lipids within a cell?
3 A scientist makes a hypothesis and then conducts an experiment. The scientist discovers
that the experiment does not support the claim. What should the scientist do?
4 Which of the following are true regarding scientific theories such as the Cell Theory?
I. Scientific theories are well established and reliable.
II. Scientific theories have been examined by multiple researchers.
III. Scientific theories are subject to change when new evidence is inconsistent with, or
cannot be
explained by, current theory.
IV. Scientific theories have changed overtime.
5 Which is the MOST valid conclusion based on this graph?
6 A biologist is trying to determine how a bacterial population helps recycle nutrients in a
local environment. What equipment would the biologist need to conduct this investigation?
Use the experiment below for the next TWO questions.
Sucrose, lactose, and fructose belong to a sweet tasting class of carbohydrates called sugar.
They are all derived from glucose. Both sucrose and fructose are extracted primarily from
plants, but lactose is primarily found in milk. People who are lactose intolerant lack the
enzyme lactase and are unable to metabolize lactose, resulting in various levels of
discomfort and digestive disorders. Over the counter products with lactase added are often
taken before consuming milk
products or used to pre-treat milk products, offering relief to victims of lactose intolerance.
Name:_______________________
Period:_________
Using the information in the passage, Justina designed an experiment investigating various
food products. She added Benedict’s solution* to 5 test tubes of various solutions, heated
the test tubes in a hot water bath, and the results will be recorded in this data table.
Test Tube Solution (10 ml) Test Results
*Benedict’s solution: A solution of sodium
1
distilled water
citrate, sodium carbonate, and copper sulfate
2
soy milk
that changes from blue to yellow or red in the
presence of reducing sugars, such as glucose. An
3
whole milk
indicator used to test for a simple sugar.
4
reduced fat milk
5
100 % lactose reduced milk
7 What is the purpose of Justina's investigation?
8 Which of the following was not used during the experiment?
9 In an activity, a ball is dropped from a height of 100 cm onto five different materials. The
rebound height of each drop is shown in the graph. Which of the following describes the
hypothesis most likely being tested?
10 A student reads a label that states, This sports drink will help you keep going through a
tough workout, restoring essential vitamins and minerals to your body during exercise.
Based on the advertiser's claim, the student is able to conclude that the sports drink
contains —
11 The enzymes that catalyze cellular reactions are macromolecules made of organic
compounds composed of carbon, hydrogen, oxygen, and nitrogen. These types of
macromolecules are known as —
12 Which of the following macromolecules is a prominent part of animal tissue that
functions in insulation, helping animals conserve heat?
13 Which of the following is a function of a carbohydrate?
14 Which statement BEST describes the function of nucleic acids?
Name:_______________________
Period:_________
15 The diagram represents four different molecules.
Which two diagrams represents the monomer or building block of lipids?
16 Which
I.
II.
III.
IV.
organic compound is best described by the following characteristics?
Carboxyl group is present
Amino group is present
R-group is present
The shape gives it its function
17 In the diagram, which substance belongs in area Z?
18 The structural formula of a molecule is shown below.
What type of molecule is show in the diagram?
19 Which of these represents the structure of a protein?
Name:_______________________
Period:_________
20 In the Enzyme Substrate Complex, what is represented by Y?
21 What does Step II illustrate?
22 An enzyme23 What will most likely happen if an appropriate enzyme is added to chemical reaction?
24 A chain made of the molecules shown here would make a ….
25 When monomers like glucose and fructose are joined to form disaccharides, what
molecule is released?