Lecture Exam 1

Navigation » List of Schools » Los Angeles Southwest Community College » Physiology » Physiology 001 – Introduction to Human Physiology » Spring 2022 » Lecture Exam 1

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

The smooth endoplasmic reticulum contributes to the detoxification of drugs and harmful chemicals.

A False

B True

Question #2

There is no nucleus during prophase in the cell life cycle.

A True

B False

Question #3

During the “S” phase of the cell life cycle the plasma membrane separates.

A False

B True

Question #4

Chromatin is composed of DNA wound around proteins known as SNARES.

A True

B False

Question #5

The nucleolus serves as the cell’s ribosome – producing machine.

A True

B False

Question #6

Concave shape cells that provide surface area for uptake of the respiratory gases.

A Egg

B Fibroblast

C Erythrocyte

D Epithelial

Question #7

Cell that gather information.

A Neuron

B Macrophage

C Fat cells

D Fibroblast

E Sperm

Question #8

Which of the following cells fight disease?

A Fat cells

B Fibroblast

C Neuron

D Macrophage

E Sperm

Question #9

What cells store nutrients?

A Macrophage

B Neuron

C Fibroblast

D Fat cells

E Sperm

Question #10

Which of the following cells are involve in moving organs and body parts?

A Smooth and skeletal muscle cells

B Connective cells

C Epithelial cell

D Nervous cells

Question #11

Stage in the cell life cycle where the cell is metabolically active – grow – make proteins.

A G 2 phase or Gap 2 phase

B G1 phase or Gap 1 phase

C Mitosis

D S “Synthesis” phase

Question #12

Centrosomes of chromosomes split moving to the opposite poles of the cell.

A anaphase

B telophase

C metaphase

D prophase

Question #13

A new nuclear membrane forms.

A anaphase

B prophase

C metaphase

D telophase

Question #14

Chromatin threads condense into chromosomes, and the nuclear envelope and nucleus disappear.

A telophase

B prophase

C metaphase

D anaphase

Question #15

Chromosomes are line up in the middle of the cell during _______________.

A metaphase

B prophase

C anaphase

D telophase

Question #16

Which is not part of interphase?

A G 2 phase or Gap 2 phase

B G1 phase or Gap 1 phase

C S “Synthesis” phase

D Mitosis

Question #17

Mitosis refers only to nuclear division. Separation of the entire cell following mitosis is ________________________.

A cytokinesis

B karyokinetic

C meiosis

D telophase

Question #18

Final preparations for nuclear division are made during this stage of the cell life cycle, centrioles finish copying themselves, and enzymes needed for cell division are synthesized.

A S “Synthesis” phase

B G 2 phase or Gap 2 phase

C G1 phase or Gap 1 phase

D mitosis

Question #19

In the cell life cycle, DNA is replicated (duplicated) during _______________.

A G1 phase or Gap 1 phase

B Mitosis

C S “Synthesis” phase

D G 2 phase or Gap 2 phase

Question #20

In chromatin, the DNA molecule wraps around proteins called

A codons

B nucleotides

C histones

D integral protein

Question #21

Ribosomes may be either free within the cytoplasm or bound to a channeling system known as the _______________________.

A cytoskeleton

B rough endoplasmic reticulum

C Golgi apparatus

D microtubule organizing center

Question #22

Which organelle is necessary for karyokinesis (nuclear division)?

A centrioles

B nucleolus

C microtubules

D plasma membrane

Question #23

Which of the following is not a cytoskeleton element?

A intermediate filaments

B microtubules

C centrioles

D microfilaments

Question #24

Site of ribosomes subunits manufacture

A nucleolus

B nucleus

C rough endoplasmic reticulum

D smooth endoplasmic reticulum

Question #25

Function of the Golgi apparatus include all of the following except

A Sort proteins for secretion from the cell

B Package proteins

C DNA replication

D Modify proteins

Question #26

Cell organelle responsible for transmitting genetic information and providing the instructions for protein synthesis.

A Ribosomes

B Nucleus

C Nucleolus

D Chromatin

Question #27

Which of the following organelles is associated with protein synthesis?

A Ribosomes

B Chloroplast

C Mitochondrion

D Smooth endoplasmic reticulum

Question #28

Directs cellular activities by mean of genes located here.

A Nucleolus

B Ribosomes

C Nucleus

D Smooth endoplasmic reticulum

Question #29

Site of lipid and steroids synthesis.

A Rough endoplasmic reticulum

B Ribosomes

C Smooth endoplasmic reticulum

D Nucleus

Question #30

What organelle digest unwanted substances by the action of digestive enzymes?

A Peroxisomes

B Endoplasmic reticulum

C Lysosome

D Golgi apparatus

Question #31

Organelle that generates most of the cell energy through an aerobic process called cellular respiration.

A Peroxisomes

B Endoplasmic reticulum

C Mitochondrion

D Lysosome

Question #32

Which organelle is important in neutralizing free radicals and breakdown poisons?

A Mitochondrion

B Lysosome

C Peroxisomes

D Golgi apparatus

Question #33

Products of glands are secreted by ________________.

A Osmosis

B Pinocytosis

C Exocytosis

D Phagocytosis

Question #34

Endocytosis process which engulf the most specific type of molecules or materials within the cell “cell eating”. This is the method by which insulin and cholesterol enter cells.

A Exocytosis

B Fluid-phase endocytosis

C Receptor-mediated endocytosis

D Pinocytosis

Question #35

Endocytosis process in which tiny packets of fluid are brought into the cell “cell drinking”.

A Receptor-mediated endocytosis

B Exocytosis

C Pinocytosis

D Phagocytosis

Question #36

The synthesis of complex molecules from simple ones often requires energy.

A Catabolism

B Metabolism

C Chemical reactions

D Anabolism

Question #37

The sum of all chemical reactions.

A Anabolism

B Metabolism

C Energy

D Catabolism

Question #38

The breakdown of complex molecules to simple ones that usually releases energy.

A Metabolism

B Catabolism

C chemical reactions

D Anabolism

Question #39

Molecule known as “decoder” because transfer amino acids during protein synthesis.

A mRNA

B tRNA

C rRNA

D DNA

Question #40

Molecule known as the link between a gene and a protein.

A tRNA

B DNA

C mRNA

D rRNA

Question #41

Molecules which provide stability to the plasma membrane by limiting the movement of lipids.

A Glycoproteins

B Peripheral proteins

C Glycolipids

D Cholesterol

E Integral proteins

Question #42

Function of the plasma membrane include all of the following except.

A regulates passage of substances to and from the nucleus

B acts as a selectively permeable membrane

C serves as an external cell barrier

D externally facing proteins act as receptor

Question #43

Which of the following statements best describe eukaryotic and prokaryotic cells?

A Eukaryotic cells have less DNA than prokaryotic cells

B Eukaryotic cells are more structurally complex than prokaryotic cells.

C Prokaryotic cells are typically multicellular while eukaryotic cells are unicellular.

Question #44

Trans fat is a type of unsaturated fat that is even less healthy than saturated fats.

A True

B False

Question #45

Sulphur has an atomic number of _______.

A 17

B 14

C 13

D 16

E 15

Question #46

Aluminum has __________ electrons in the outermost electron shell.

A 13

B 1

C 10

D 3

E 5

Question #47

Aluminum has an atomic number of _______.

A 14

B 13

C 10

D 15

E 11

Question #48

Fats are usually of animal origin while oils are usually of plant origin.

A False

B True

Question #49

Emulsification is the breaking up of fat globules into smaller droplets by the action of bile salts produced by the liver.

A False

B True

Question #50

A hydrolysis reaction involves the loss of water.

A False

B True

Question #51

After lunch our digestive system will use the process of hydrolysis to break the food down into smaller subunits.

A True

B False

Question #52

The presence of a buffer in our blood is an example of homeostasis.

A True

B False

Question #53

Water makes up 50 % of total body weight.

A False

B True

Question #54

An element can be broken down by chemical means.

A False

B True

Question #55

The membranes of cells are composed of _______________________.

A steroids.

B oils.

C phospholipids.

D triglycerides.

E fats.

Question #56

Sex hormones belong to which category of lipids?

A steroids

B oils

C fats

D phospholipids

E triglycerides

Question #57

A fatty acid that contains only single bonds between the carbon atoms is considered

A trans unsaturated.

B unsaturated.

C saturated.

D a cholestrol.

E a steroid.

Question #58

How are fats, oils, phospholipids, and steroids alike?

A They each contain a polar phosphate group.

B They each contain only 1 fatty acid.

C They all contain at least one carbon ring.

D They do not dissolve in water.

E They are all solid at room temperature.

Question #59

A fat contains how many fatty acids?

A 2

B 1

C 5

D 3

E 4

Question #60

Starch, cellulose, and glycogen are alike in that __________________________________.

A they can all be digested by our bodies.

B they have the same types of bonds between the monomer units.

C they are all made of glucose.

D they are all found in animals.

E they contain the same number of side chains.

Question #61

Which polysaccharide is a plant complex carbohydrate? Hint: It is in potato ?

A chitin

B glucose

C starch

D cellulose

E glycogen

Question #62

Which of the following foods would be a good source of fiber?

A berries and granola

B All of the possible options here are good sources of fiber

C apple

D pineapple

E whole wheat bread

Question #63

What passes through the digestive tract as fiber or roughage?

A Glycogen

B Cellulose

C glucose

D Maltose

E Starch

Question #64

Which polysaccharide is stored as an energy source in the body of animals?

A starch

C glucose

D cellulose

E glycogen

F chitin

Question #65

Which of the following is not a MONOSACCHARIDE?

A starch

B galactose

C maltose

D fructose

E glucose

Question #66

Which of the following is not one of the four classes of organic molecules found in cells?

A proteins

B vitamins

C carbohydrates

D lipids

E nucleic acids

Question #67

Joining small molecules (monomers) together to form longer chains (polymers) requires a process called. Hint: This process lost water.

A monomerization.

B dehydration reaction.

C hydrolysis reaction.

D emulsification.

E disassembly.

Question #68

In an acidic solution ____________________________________________.

A the number of H+ is 3 times less than the number of OH-.

B the number of H+ is 10 times less than the number of OH-.

C the number of H+ is greater than the number of OH-.

D the number of H+ is equal to the number of OH-.

E the number of H+ is less than the number of OH-.

Question #69

William noticed water mysteriously climbing up a capillary tube. This is an example of which property of water?

A Water is a solvent.

B Water molecules are cohesive.

C Water has a high heat of vaporization.

D The temperature of liquid water rises and falls slowly.

E Frozen water is less dense than liquid water.

Question #70

Bond in which one element loses electrons and other gains electrons.

A polar

B non-polar

C covalent

D hydrogen

E ionic

Question #71

Atoms that share electrons have what type of bonds?

A covalent

B hydrogen

C ionic

D colloidal

E neutral

Question #72

A combination of two or more atoms of the same type is called

A a molecule.

B an isotope.

C a salt.

D an ion.

E an atomic unit.

Question #73

Isotopes of an element differ due to the number of _______________.

A Electrons

B Neutrons

C Protons

D both protons and electrons

E Neutrinos O

Question #74

Be (Beryllium) has an atomic number of 4 and an atomic mass of 9. How many protons does it have?

A 8

B 4

C 9

D 5

E 7

Question #75

The atomic number of an atom is determined by the number of

A protons.

B protons and neutrons

C neutrons

D electrons

Question #76

How many elements occur naturally?

A 64

B 32

C 6

D 92

E 112

Question #77

In an atom, the number of protons always equals the number.

A of electrons.

B of neutrinos.

C of neutrons and protons.

D of quarks.

E of neutrons.

Question #78

The smallest unit of an element that still retains the chemical and physical properties of that element is called

A a molecular bond.

B a neutrino.

C an atom.

D a nucleus.

E an isotope.

Question #79

Which organ system mounts attack against foreign substances in the body?

A Lymphatic

B Endocrine

C Nervous

D Reproductive

E Urinary

Question #80

Large molecules such as proteins are called

A cellular organelles.

B cells.

C multi-atom units.

D macromolecules.

Question #81

Which organ system consists of vessels that do not carry blood, but pick up fluids (and some cells) that are leaked from the blood?

A Cardiovascular

B endocrine

C urinary

D lymphatic

E integumentary

Question #82

An example of an organ is

A the intestine.

B epithelium.

C the cardiovascular system (but not the circulatory system).

D a fat cell.

Question #83

An example of a tissue in the body is

A the stomach.

B a macromolecule.

C epithelium.

D a muscle cell.

Question #84

The smallest living unit is

A a cell.

B a human being.

C an organ.

D a molecule.

E an atom.

Question #85

Hormones are regulatory proteins that are secreted by the __________ system.

A Nervous

B Endocrine

C Urinary

D Skeletal

E Lymphatic

Question #86

Which organ system regulates water, electrolyte, and acid – base balance?

A Digestive

B Endocrine

C Urinary

D Endocrine

E Respiratory

Question #87

Which organ system includes the site of cutaneous receptors?

A muscular

B Nervous

C Integumentary

D Muscular

E Skeletal

Question #88

Which of the following molecules are not macromolecules?

A nucleic acis

B Oxygen and carbon dioxide

C Proteins

D Carbohydrates

E Lipids

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment