Biology Final exam Chapt 1-3
True
In sickle-cell disease, malformation of red blood cells is caused by only one error in the genetic code for hemoglobin.
glycogen forming glucose molecules
Which of the following is a hydrolysis reaction
Proteins are used to produce many types of hormones
Which of the following is a true statement about proteins
COCl2
Which of the following is an inorganic molecule
H2CO3
Which of the following is an organic molecule
ecosystem
Which of the following is the most inclusive level of organization
All of the above are true
Which of the following is true about ecosystems
hydrogen bonds
The figure below is depicting the interaction of water molecules with one another. The weak attractions between water molecules are known as
Pregnant bats
Scientists were studying temperature selection among pregnant big brown bats. What would the test group be in this experiment?
female bats that were not pregnant
Scientists were studying temperature selection amongst pregnant big brown bats. What would be the best control group for this study?
Carbohydrates - include glucose, sucrose, and starch
Select the correct association
Fat dehydration synthesis
The figure below represents the formation of a ________ molecule by the process of ________.
Organs
The circulatory system of a whale is considered an organ system because it is composed of different
True
The development of new technologies is based on science
they all produce H+ in a solution, making them acids
What do lemons, tomatoes, and coffee all have in common chemically
-OH
What functional group makes a carbohydrate hydrophilic
All of the above statements are correct
When a sodium atom transfers an electron to a chlorine atom
True
When starch is digested, water molecules are used to break the bonds holding the monosaccharide subunits together
-COOH
Which functional group is both polar (hydrophilic) and weakly acidic
sucrose
Which of the following terms should be categorized separately from the others
zinc
Which of the following would be considered a trace element in living things
Atom
Which one of the following is the smallest unit of matter that has all the properties of an element
Water is a good solvent
Which property of water causes sugar to dissolve in coffee?
Ecosystem
A biologist is studying how acid rain affects earthworm and beetle populations in a portion of Yellowstone National Park. What level of organization is she studying?
Electrons are shared between two atoms to complete their octets
A covalent bond occurs when
unsaturated
A fatty acid that has double bonds is called
Amino acids
A gene in DNA is the code for assembling a sequence of
Carbon and hydrogen atoms
A molecule is said to be organic if it contains
False
A polypeptide forms a beta pleated sheet or an alpha helix as its primary structure
Dehydration synthesis reaction
A triglyceride is formed when three fatty acids join a glycerol by a
Unequal sharing of electrons
A water molecule, as shown here, is polar because of
buffer
A(n) ________ can be defined as a substance that keeps pH within established limits by taking up excess H +or OH - in a solution.
They will not combine with water
How are lipids different from other categories of biological molecules?
DNA is comprised of a double-strand; RNA is a single-strand.
How does DNA differ from RNA
A weak acid dissociates only partially in water
How does a strong acid differ from a weak acid
glycogen
Humans store glucose in the form of
which of the following is a molecule
O2
Water can move up a 100-foot pine tree, from the roots to the leaves
Of the following examples, which best demonstrates the property of water cohesion
valence electrons
The reactivity of an atom depends on the number of
Begins with observations
The scientific method
tertiary and quaternary structures
Which of the following levels of a protein are susceptible to denaturation
A desert with little water, high heat, sand, cacti, and some mammals - ecosystem
Which of the following levels of biological organization is correctly matched with an example
Secondary structure
Which of the following levels of protein folding would include shapes identified as helix and pleated sheet
Photosynthesis
Which of the following processes transforms solar energy into chemical energy?
All of the statements about scientific theories are true
Which of the following statement(s) is/are true with respect to scientific theory?
The number and arrangement of electrons in an atom govern its chemical activity
Which of the following statements about atoms is correct
ion
an atom that has an electrical charge
Minimize the changes in pH of their internal environment
cells need buffering agents in order to
The pH scale is a mathematical indicator of the
the concentration of H+ present in a solution
brain - organ
which of the following pairs of words is matched correctly
Nucleic acid
ATP is a molecule used for energy transport inside the cell. The components of ATP are a nitrogen-containing base, a 5-carbon sugar, and three phosphate groups. Given this structure, ATP is classified as a(n)
atomic number
All atoms of the same element have the same
Metabolism
All the chemical reactions that occur in a cell are collectively called
Proteins; nucleotides
Amino acids are needed to build ________,just as ________ are needed to create DNA.
Equal numbers of protons and electrons
An atom with a neutral charge has
determines its chemical reactivity
An atom's valence electron shell
All three domains have a common ancestor
Based on the evolutionary tree of the three domains, which of the following statements is true
Eukaryotic Consumer
Didinium are carnivorous protistans that prey on other, slower moving protistans. How should Didinium be classified?
The giving, taking, or sharing of electrons
Chemical bonds involve
H+; acid
Cola has a pH of 3.5. This means that it has an excess of _______ ions and would be called a(n) ________.
DNA is double-stranded and contains the sugar deoxyribose and the nitrogen-containing base thymine; RNA is single-stranded and contains sugar ribose and the nitrogen-containing base uracil.
DNA and RNA differ in that
stores genetic information; aids in the processing of the information within the DNA into proteins.
DNA functions to ________, while RNA's function is to________.
DNA
Deoxyribose is a sugar found in
to maintain the correct temperature, moisture level, and acidity as well as other factors
For metabolic processes to occur within their cells, all living organisms need to maintain homeostasis which means they need
encompasses many hypotheses
Science, a theory
monomer
The basic building block or subunit of many biological molecules is called
Cellulose
Wood and paper are composed of
A saturated fat has
no double bonds
Neutron number
Isotopes of an element differ in their
Parts W and Z are hydrophilic.
Refer to the figure. Which of the following is true regarding the labeled plasma membrane?
Hydrophillic
If a material mixes readily with water, it is identified as
Hydrogen
In addition to carbon, an organic molecule must contain
Function well in a given environment
In general, evolutionary processes lead to organisms that
amino acid
In which of the following is the correct monomer matched with its polymer
Metabolism
Living organisms must constantly take in energy in order to power functions necessary to remain alive. All of the chemical reactions that involve energy conversions within a cellare called
True
Managing emerging diseases such as SARS is just one of the many challenges facing science today
Robert wanted to see if his theory was true that cigarette smoke will influence web-building in spiders
Robert, an aspiring scientist in a biology class, wanted to conduct a study on the effects of cigarette smoke on the web-building ability of spiders. Which of the following statements is an incorrect use of terms pertaining to the scientific method?
Dehydration sythesis
The following figure represents which process
The figure below is depicting the interaction of water molecules with one another. The weak attractions between water molecules are known as
The pH of pure water is ________ because ________.
natural selection; adapted to
The process of ________ leads to organisms that are ________ that environment.
for comparison to the other test groups
The purpose of a control group in an experiment is
Cell
The smallest, most basic unit of life
Help determine the chemical properties of an organic molecule
The term "functional" is used in the phrase "functional group" because it describes a group of atoms that
Ionic
The type of bond that would form from the transfer of an electron from one atom to another is a(n) ________ bond.
Which nitrogen-containing base is found in RNA but not in DNA
Uracil
They possess no double bonds between carbon atoms, which makes them more tightly packed together.
What makes saturated triglycerides considerably less healthy than unsaturated ones?
False
When a positively charged hydrogen in a water molecule become attracted to thenegatively charged oxygen in a nearby water molecule, this is called a ionic bond. T
Observation, hypothesis, prediction, experiment, conclusion
Which answer choice lists the steps of the scientific method in the correct order?
Protista
Which kingdom includes both unicellular and multicellular organisms
Thymine
Which nitrogen-containing base is found in DNA but not in RNA
Domain Archaea
Which of the following can be categorized as prokaryotic
species, genus, family, order, class, phylum, kingdom, domain
Which of the following correctly lists the classification categories from least to most inclusive?
cells, tissues, organs, organ systems, organism
Which of the following correctly lists the levels of biological organization from simplest to most complex?
-NH2
Which of the following is a functional group present in amino acids
C43H64O4
Which of the following is an organic molecule
C6H12O6
Which of the following is an organic molecule
All of the above statements are correctly matched
Which of the following statements is correctly matched to the step of the scientific method?
Living organisms are able to maintain their internal body temperatures because the water in their cells resists changes in temperature.
Which of the following would be an example of the value of water's heat capacity?
amino acids joined by dehydration synthesis reactions
Which of the following would describe a polypeptide
Enzymatic activity
Which one of the following is a main function of proteins