Bio Ii

Front 1

Which of the following is NOT an organic molecule?

Back 1

water

Front 2

The functional group shown above is ____.

Back 2

a carboxyl group

Front 3

The functional group shown above is ____.

Back 3

a phosphate group

Front 4

A monosaccharide with six carbons is called ____.

Back 4

hexose

Front 5

The molecule shown above is ribose, an example of a ____ sugar.

Back 5

pentose

Front 6

The molecule shown above is mannose, an example of a ____ sugar.

Back 6

hexose

Front 7

In many animals this polysaccharide is found in large quantities in liver and muscle cells. It is highly branched, with many a(1-4) and a(1-6) linkages.

Back 7

glycogen

Front 8

Although they have a diversity of structures, all members of this group of organic molecules are primarily nonpolar and thus water-insoluble.

Back 8

lipids

Front 9

Use the figure above for the following question(s).

The molecule shown above is ____.

Back 9

a triglyceride

Front 10

The molecule shown above is testosterone, a substance that has important regulatory functions in humans and many other animals. Molecules with regulatory functions like testosterone are called ____.

Back 10

hormones

Front 11

Proteins are polymers of ____.

Back 11

amino acids

Front 12

The image shown above is an example of a(n) ____.

Back 12

a helix

Front 13

The molecule shown above is a(n) ____.

Back 13

nucleotide

Front 14

Hereditary information in all eukaryotes, prokaryotes, and viruses is stored in ____.

Back 14

nucleic acids

Front 15

Which of the following is least likely to be found in a cell membrane?

Back 15

nucleic acid

Front 16

Which of the following types of molecules are the most diverse in terms of structure and types of roles in cells?

Back 16

proteins

Front 17

According to the first law of thermodynamics,

Back 17

energy only changes forms.

Front 18

In general, the form of energy that is least useful to living organisms is

Back 18

heat

Front 19

During every energy transformation, it can be said that

Back 19

the entropy of the universe increases.

Front 20

Identify the exergonic reaction in the list below.

Back 20

burning wood for a campfire

Front 21

When a reaction reaches equilibrium,

Back 21

the rate of the forward and reverse reactions are equal.

Front 22

When there are more reactants than products for a reaction,

Back 22

the greater concentration of reactants pushes the reaction forward, toward generating more products.

Front 23

The coupling of endergonic to ____ reactions is used to generate ____ in a cell.

Back 23

exergonic, ATP

Front 24

Use the figure above for the following question(s).

This portion of the graph shows the activation energy when there is no enzyme.

Correct!

Back 24

A

Front 25

Use the figure above for the following question(s).

This portion of the graph shows the activation energy when there is an enzyme.

Back 25

B

Front 26

This curve most likely represents a graph of enzyme activity

Back 26

as a function of pH in a fairly neutral environment.

Front 27

Use the graph above for the following question(s).

The optimal pH for enzyme 2 is:

Back 27

5

Front 28

Use the graph above for the following question(s).

If all three enzymes catalyize the same reaction and your conditions require a pH of 7, the best enzyme to use would be:

Back 28

enzyme 3.

Front 29

Enzymes

Back 29

are catalytic proteins.

Front 30

If a reaction in a cell requires an enzyme

Back 30

we know that the reaction occurs more readily with the enzyme than it would if there were no enzyme.

Front 31

Which early scientist proposed that cells arise only from preexisting cells?

Back 31

Rudolf Virchow

Front 32

The ____ regulates the movement of molecules in and out of the cell.

Back 32

plasma membrane

Front 33

Which one of the following groups does not belong to the domain of the eukaryotes?

Back 33

Bacteria

Front 34

Chromatin consists of ____.

Back 34

DNA and associated proteins

Front 35

The ____ is/are involved in the synthesis of lipids.

Back 35

smooth endoplasmic reticulum

Front 36

The ____ contains hydrolytic enzymes for the digestion of proteins, lipids, nucleic acids, and polysaccharides.

Back 36

lysosome

Front 37

Cellular respiration occurs in the ____.

Back 37

mitochondria

Front 38

The interior surface area of mitochondria is greatly increased by ____.

Back 38

cristae

Front 39

Select the correct path a protein synthesized on a ribosome attached to the rough ER would follow in the endomembrane system.

Back 39

rough ER ® Golgi complex ® vesicle ® plasma membrane

Front 40

A bundle of ____ extends from the base to the tip of a flagellum or cilium.

Back 40

microtubules

Front 41

____ store starch in plants.

Back 41

Amyloplasts

Front 42

In a mature plant cell, ____ may occupy more than 90% of a mature plant cell's volume.

Back 42

the central vacuole

Front 43

Tight junctions ____.

Back 43

seal the spaces between cells

Front 44

Which of the following pairs is mismatched?

Back 44

intermediate filaments : tubulin

Front 45

Select the Exception

The endomembrane system is involved in each of the following functions EXCEPT ____.

Correct!

Back 45

DNA synthesis

Front 46

Select the Exception

The function of the central vacuole in plants may include all of the following EXCEPT ____.

Back 46

protein synthesis

Front 47

What organic molecules have a chemical formula that is (or is very nearly) a multiple of (CH2O)?

Back 47

carbohydrates

Front 48

Monosaccharides and disaccharides are types of ____.

Back 48

carbohydrates

Front 49

Isomers are two or more molecules with ____ chemical formula and ____ molecular structures.

Back 49

the same; different

Front 50

The molecule shown above is a(n) ____.

Back 50

monosaccharide

Front 51

The disaccharide shown above is ____.

Back 51

sucrose

Front 52

A fatty acid has ____ group at the end of a hydrocarbon chain.

Back 52

a carboxyl group

Front 53

The molecule shown above is ____.

Back 53

glycerol

Front 54

The individual credited with first observing the cell nucleus was ____.

Back 54

Robert Brown

Front 55

Which one of the following is NOT found in prokaryotic cells?

Back 55

nucleus

Front 56

The nucleoli are found within the nucleus and synthesize ____.

Back 56

ribosomal subunits

Front 57

ribosomal subunits

Back 57

nucleolus

Front 58

The Golgi complex ____.

Back 58

receives proteins made in the rough ER and chemically modifies them

Front 59

Organelles that contain DNA include

Back 59

mitochondia and chloroplasts.

Front 60

Scientists believe that mitochondria may have evolved from ancient bacteria because ____.

Back 60

both have their own DNA and ribosomes