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BSC 1005 Exam 2024 | BSC 1005 Exam Update 2024 Questions and Correct Answers Rated A+
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BSC 1005 Exam 2024 | BSC 1005 Exam Update 2024 Questions and Correct Answers Rated A+
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BSC 1005 Exam 2024 | BSC 1005 ExamUpdate 2024 Questions and Correct
Answers Rated A+
Life is organized in a hierarchical fashion. Which of the following
sequences correctly lists that hierarchy as it increases in complexity? -
ANSWER-molecule, cell, tissue, organ, organ system, organism,
population, community, ecosystem
Which of the following statements about genetics is true? -ANSWER-
Each organism has its own unique DNA code.
Organisms that are prokaryotes are in the domains... -ANSWER-
Bacteria and Archaea.
Which of the following statements about the domain Bacteria is true? -
ANSWER-All bacteria lack a nucleus.
Which of the following is a kingdom within the domain Eukarya? -
ANSWER-Fungi
All organisms belonging to the kingdom Plantae -ANSWER-are
photosynthetic and contain cells that are surrounded by cell walls with
cellulose.
Members of the kingdom Fungi -ANSWER-include the mushrooms
and yeasts, and decompose the remains of dead organisms and
absorb nutrients from
,use photosynthesis to produce their own food. -ANSWER-a tentative
answer to some question.
A theory is -ANSWER-an explanation of an idea that is broad in scope
with multiple lines of evidence.
To be scientifically valid, a hypothesis must be -ANSWER-testable
and falsifiable.
The four most common elements in living organisms are -ANSWER-C,
H, O, N.
Which of the following is a trace element in the human body? -
ANSWER-zinc
Which of the following trace elements is commonly added to table salt
to prevent the formation of goiters? -ANSWER-iodine
Which of the following statements best describes a compound? -
ANSWER-A compound contains two or more different elements in a
fixed ratio.
Which of the following particles is found in the nucleus of an atom? -
ANSWER-protons and neutrons
Which of the following best describes the atomic number of an atom? -
ANSWER-the number of protons in the atom
A radioactive isotope is an isotope that -ANSWER-decays.
If you found a fossilized dinosaur bone, what method could be used to
determine the age of the fossil? -ANSWER-isotope analysis
,Radioactive isotopes -ANSWER-can be used in conjunction with PET
scans to diagnose diseases.
Which particles increase by one as we move from left to right in the
elements on the periodic table? -ANSWER-electrons and protons
Table salt is formed when -ANSWER-sodium donates its single outer
electron to chlorine
A hydrogen atom has one electron. How many covalent bonds can
hydrogen form? -ANSWER-one covalent bond
What is the fundamental difference between covalent and ionic
bonding? -ANSWER-In a covalent bond, the partners share a pair of
electrons; in an ionic bond, one partner accepts electrons from
In a water molecule, hydrogen and oxygen are held together by a(n)
________ bond. -ANSWER-polar covalent
The hydrogen atoms of a water molecule are bonded to the oxygen
atom by ________ bonds, whereas neighboring water molecules are
held together by ________ bonds. -ANSWER-polar covalent . . .
hydrogen
Water molecules stick to other water molecules because -ANSWER-
hydrogen bonds form between the hydrogen atoms of one water
molecule and the oxygen atoms of other water molecules.
Which of the following statements about water is false? -ANSWER-
The hydrogen bonds in ice are less stable than the hydrogen bonds in
liquid water.
, A solution with a pH of 7 is -ANSWER-neutral.
A buffer -ANSWER-donates H+ ions when conditions become too
basic and accepts H+ ions when conditions become too acidic.
Which of the following is a carboxyl group? -ANSWER-COOH
Which of the following is an amino group? -ANSWER-NH2
Which of the following contains a carboxyl and an amino group? -
ANSWER-amino acids
What is the general function of enzymes within a cell? -ANSWER-to
speed up chemical reactions
A disaccharide forms when -ANSWER-two monosaccharides join by
dehydration synthesis.
Which of the following lists contains only polysaccharides? -ANSWER-
cellulose, starch, and glycogen
Fatty acids are -ANSWER-hydrophobic.
Fatty acids with double bonds between some of their carbons are said
to be -ANSWER-unsaturated.
A phospholipid is composed of -ANSWER-one glycerol molecule
linked to one phosphate group and two fatty acids.
Which of the following substances is a lipid? -ANSWER-steroids
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