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Biology 100 > Bio QUiz > Flashcards

Bio QUiz Flashcards

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1
Q

The bond in table salt (NaCl) is
-Covalent
-Nonpolar
-Polar
-Double
-Ionic

A

Ionic

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2
Q

During intense exercise, you produce a lot of heat energy yet your body temperature rises only in small increments. This temperature stability is because water in body fluids releases the heat very quickly.

True or False?

A

False

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3
Q

Which of the following molecules is stored in adipose tissue and serves as an important source of energy for the human body?

-Glucose
-Phospholipids
-Triglycerides
-Glycogen

A

Triglycerides

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4
Q

Carbohydrates normally function in animals as energy storage molecules.
True or False?

A

True

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5
Q

Carbon provides a versatile backbone for macromolecules. With an atomic number of 6, carbon can form up to 4 different covalent bonds.
True or False?

A

True

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6
Q

Relative to a pH of 6, a pH of 4 has a ______.
100 times higher H+concentration
20 times lower H+concentration
100 times lower H+concentration
20 times higher H+concentration
200 times higher H+concentration

A

100 times higher H+ concentration

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7
Q

Which of the following provides long-term energy storage for plants?
-ATP
-Glycogen
-Cellulose
-Starch
-Glucose

A

Starch

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8
Q

DNA
-contains protein-building instructions
-is one of the adenosine phosphates
-is one of the nucleotide coenzymes
-none of these
-all of these

A

Contains protein-building instructions

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9
Q

Phospholipids have hydrophilic fatty acids regions and hydrophobic phosphate regions.

True or False?

A

True

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10
Q

A mad scientist has ripped apart an atom and collected all the subatomic particles located in the nucleus of the atom. Which of the following has he collected?

-neutrons and electrons
-protons and neutrons
-protons
-electrons and protons
-electrons

A

Protons and Neutrons

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11
Q

What name is given to bonds that involve the sharing of electrons?

-Ionic
-Covalent
-Electronic
-Polar
-Hydrogen

A

Covalent

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12
Q

The hydrogen and oxygen of a water molecule are held together by ____ bonds

-hydrogen
-electron
-proton
-covalent
-osmotic

A

Covalent

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13
Q

Water will dissolve all of these except
CH3-CH2-OH
sugar
CH3-COOH
salt
CH3-CH2-CH2-CH3

A

CH3-CH2-CH2-CH3

BECAUSE IT DOESNT HAVE AN OH?

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14
Q

An atoms nucleus is composed of:

protons
protons and electrons
protons and neutrons
neutrons
neutrons and electrons

A

Protons and neutrons

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15
Q

The part of the atom of greatest biological interest is the:

-none of the above.
-electron.
-innermost electron shell.
-neutron.
-proton.

A

electron

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16
Q

Which of the following are Isomers?

-sucrose and lactose
-sucrose and glucose
-lactose and maltose
-glucose and fructose
-glucose and sucrose

A

Glucose and Fructose.

I failed this one.

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17
Q

WHich of the following is insoluble in water?
-salt
-Amino acids
-Sucrose
-DNA
-Olive Oil

A

Olive Oil

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18
Q

Which substance is not a compound?
-A carbohydrate
-A nucleotide
-Carbon
-Salt
-Methane

A

Carbon

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19
Q

Atoms with either more or fewer neutrons than the usual number for an element are referred to as isotopes.

True
OR
False

A

True

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20
Q

What happens when hydrochloric acid (HCl) is added to pure water?

-The HCl molecules separate into H+and Cl-ions.
-The pH of the solution increases.
-The water has a decrease of H+ions
-The concentration of OH-ions increases.
-The HCl molecules float on top of the water.

A

The HCl molecules separate into H+and Cl-ions

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21
Q

Protein function is directly related to their primary structure of amino acids.
True OR False?

A

True

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22
Q

Radioisotopes have a number of uses in science and medicine. These uses include

-providing the power supply in heart pacemakers.
-repairing damaged heart tissue
-curing diabetes.
-treating asthma and regulating nerve transmission.
-dating fossils and treating cancer.

A

Dating fossils and treating cancer

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23
Q

A hydrogen bond is

-a sharing of a pair of electrons between a hydrogen and an oxygen nucleus
-an attractive force that usually involves a polarly-bonded hydrogen atom and another polarly-bonded atom with a partial negative charge
-a sharing of a pair of electrons between a hydrogen nucleus and either an oxygen or a nitrogen nucleus
-the loss of an electron by hydrogen to a highly electronegative atom
-none of these

A

an attractive force that usually involves a polarly-bonded hydrogen atom and another polarly-bonded atom with a partial negative charge

I got this one wrong.

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24
Q

A buffer is essential in living systems to maintain a constant pH.
True OR False?

A

True

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25
Q

The structure of a cell membrane includes a modified form of triglyceride called a cholesterol.

True or False?

A

False

26
Q

What bond(s) is(are) easily disrupted in aqueous (water) solutions?

-ionic
-covalent
-a and b are correct
-a, b, and c are correct
-polar covalent

A

a and b are correct

I got this one wrong.

27
Q

Which of the following is true regarding nucleotides?

-A DNA nucleotide could be made up of ribose, a phosphate, and cytosine.
-There are three different DNA nucleotides.
-DNA nucleotides are assembled into RNA by the process of dehydration synthesis.
-DNA nucleotides contain deoxyribose; RNA nucleotides contain sucrose.
-Nucleotides are bonded together by covalent bonds between the sugars and the phosphates.

A

Nucleotides are bonded together by covalent bonds between the sugars and the phosphates.

28
Q

Water molecules are held together by ionic bonds.
True or False?

A

False

29
Q

The following molecule is best described as a ______.
CH3—CH2—CH2—CH2

-lipid
-hydrocarbon
-protein
-nucleic acid
-carbohydrate

A

hydrocarbon

I got this one wrong

30
Q

What type of lipid is most important in biological membranes?
-phospholipids
-oils
-fats
-triglycerides
-steroids

A

Phospholipids

31
Q

The stability of cell membranes is increased by the presence of proteins
True or False?
Got this one wrong

A

False

32
Q

Looking into a microscope, you notice cells swimming, propelled by a long tail. What cell structure must these cells have in order to be mobile?
cytoplasm
ribosomes
peroxisomes
smooth ER
flagella

A

flagella

33
Q

The process of phagocytosis is important to:
enable cells to take in glucose
enable the kidneys to reabsorb small proteins
enable the kidneys to reabsorb water
enable WBC (white blood cells) to ingest pathogens
I got this one wrong

A

enable WBC to ingest pathogens

34
Q

Diet and exercise cause the amount of fat in fat cells to decrease; they do not cause a decrease in fat cell numbers.
True or False?

A

True

35
Q

Polar molecules cannot pass across a plasma membrane through the lipid bilayer because they are not soluble in lipids
True or false?
I got this wrong.

A

True

36
Q

The cell organelles that are the site of protein synthesis are ribosomes.
True or false?

A

True

37
Q

Which of the techniques reveal internal cellular detail?
light micrograph and transmission electron
micrograph

transmission electron micrograph and scanning
electron micrograph

all three micrographs

none of the micrographs

light micrograph and scanning electron micrograph

A

light micrograph and transmission electron micrograph

38
Q

Which of the following are associated with rough ER?
DNA
ribosomes
chlorophyll
Lipid Synthesis
Plasma Membrane

A

Ribosomes

39
Q

A cell ingests bacteria. What type of transport is likely responsible for this process:

filtration
diffusion
osmosis
endocytosis
exocytosis

A

endocytosis

40
Q

Which of the following is NOT an active transport process:

exocytosis
phagocytosis
pinocytosis
facilitated diffusion
endocytosis

A

facilitated diffusion

41
Q

Chromosomes are made of DNA, and are found in the nucleus of a cell.
True or false?

A

True

42
Q

Pores in a cell membrane are made of proteins.
True or false?

A

True

43
Q

Protein secretion involves

Golgi bodies
both Golgi bodies and peroxisomes
both Golgi bodies and endoplasmic reticula
peroxisomes
endoplasmic reticula

I got this one wrong

A

both golgi bodies and endoplasmic reticula

44
Q

The Golgi apparatus consists of a stack of flattened membranous sacs associated with swarms of tiny vesicles that are found close to the nucleus.
True or false?

A

True

45
Q

The cell organelle that secretes cellular products is the mitochondria
True or false?

A

The cell organelle that secretes cellular products is the mitochondria

46
Q

Identify the part of the cell: lysosome

A

D. a round green ball

47
Q

The energy for diffusion is:

provided by blood pressure in capillaries
provided by carrier enzymes in cell membranes
provided by ATP within cells
is not required as it is a natural process

A

is not required as it is a natural process

48
Q

Glycolysis takes place in the ___ of the cell, and oxygen ___ required.

mitochondria/is
cytoplasm/is not
mitochondria/is not
cytoplasm/is

I got this one wrong.

A

cytoplasm/is not

49
Q

In the electron transport system, the energy used to synthesize ATP comes from the diffusion of ________ from the outer compartment of the mitochondria to the inner compartment.

electrons
FADH2
NADH
pyruvate
hydrogen ions

I got this one wrong

A

hydrogen ions

50
Q

The concept of a membrane as a fluid mosaic reflects the ability of ______.

most proteins but not phospholipids to drift about in the plane of the membrane

phospholipids but not proteins to drift about in the plane of the membrane

phospholipids and most proteins to drift about in the plane of the membrane

nucleotides to drift into and out of the membrane structure

carbohydrates to drift into and out of the membrane structure

A

phospholipids and most proteins to drift about in the plane of the membrane

51
Q

The energy for filtration in the kidneys is provided by blood pressure.
True or false?

I got this wrong

A

True

52
Q

White blood cells engulf bacteria by the process of pinocytosis.
True or false?

A

False

53
Q

Where does protein synthesis take place?

in the nucleus
on ribosomes
in the Golgi apparatus
on smooth endoplasmic reticulum
in the nucleolus

A

On ribosomes

54
Q

Secretory vesicles are generated by

mitochondria
both mitochondria and Golgi bodies
both chloroplasts and mitochondria
Golgi bodies
chloroplasts

A

Golgi bodies

55
Q

A solution with a lesser salt concentration than human cells is said to be hypotonic
True or false?

A

True

56
Q

If a red blood cell, or any other type of human cell, were placed in a hypotonic solution, water enters the cells, causing them to swell and eventually burst.
True or false?
I got this one wrong

A

False

57
Q

What is the function of a cell vacuole?

neither a nor b
a and b
Storage of wastes
Excretion of wastes

I got this one wrong

A

Storage of wastes

58
Q

The ultimate stem cell is a fertilized egg because

they are slow growing and thus more stable.

a newly fertilized egg is always free of defects and disease.

it gives rise to all specialized cells in the body.

it will only produce healthy nervous tissue.
it can undergo mitosis.

A

it gives rise to all specialized cells in the body.

59
Q

When using a light microscope to view a cell you obtained from scraping under your fingernails, you notice that the cell lacks a nucleus; therefore, you conclude that the cell must be a type of ______ cell.

plant
prokaryotic
animal
eukaryotic
fungal

A

prokaryotic

60
Q

The site where ribosomes assemble prior to their migration into the cytoplasm is the:
You Answered
nuclear membrane
plasma membrane
Correct Answer
nucleolus
chromatin
chromosomes

A

Biology 100 (19 decks)

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