Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

college biology > Exam 1 > Flashcards

Exam 1 Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

which of the following is not true regarding living organisms ?

A

all organisms are capable of resurrection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Recall Pasteur’s experiment on spontaneous generation. If he had just warmed the nutrient-rich broth,rather than boiled it , what would have been the likely outcome of his experiment ? Cells would ____ ?

A

Have appeared in both flasks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A covalent chemical bond is one in which ?

A

Outer shell electrons of two atoms so as to satisfactorily fill their respective orbitals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How may electrons are involved in a single covalent bond ?

A

two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

In a single molecule of water , two hydrogen atoms are bonded to a single oxygen atom by

A

polar covalent bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

when the atoms involved in a covalent bond have the same electronegativity , what type of bond results?

A

a nonpolar covalent bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the partial negative charge at one end of water molecule is attracted to the partial positive charge pf another water molecule. What is this attraction called ?

A

hydrogen bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what component of amino acid structure varies among different amino acids ?

A

the components of the R-group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which one of the following is NOT a component of each monomer used to make proteins ?

A

a phosphorus atom, P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

you disrupt all hydrogen bonds in a protein . What level structure will be preserved ?

A

primary structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which type of interaction stabilizes the a-helix and the b-pleated sheet structures of proteins ?

A

hydrogen bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what type of interaction is directly responsible for the formation of secondary structure ?

A

hydrogen bonds between sections of the polypeptide backbone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

the tertiary structure of a protein is the ?

A

unique shape of the fully folded polypeptide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Nucleic acids are polymers made up of which of the following monomers ?

A

nucleotides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

An enzye has total of four active sites. When you denature the molecule and study its composition ,you find that each active site occurs on a different polypeptide. Which of the following hypotheses does this observation support ?

A

the protein has quaternary structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the difference between a ribonucleotide and a deoxyribonucleotide ?

A

riobnucleotides have a hydroxyl group on the 2 carbon of their subunit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which of the following uncludes all of the pyrimidines found in RNA and DNA ?

A

Cytosine , uracil & thymine

18
Q

When nucleotides polymerize to form a nucleic acid ?

A

a covalent bond forms between the sugar of one nucleotide and the phosphate of a second

19
Q

Which of the following descriptions best fits the class of molecules known as nucleotides ?

A

a base , a phosphate group and a sugar

20
Q

The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA ?

A

contains one less oxygen atom

21
Q

compare proteins to nucleic acids. Which of the following is TRUE ?

A

Both have primary and secondary structure

22
Q

Adouble-stranded DNA molecule contains a total of 120 purines and 120 pyrimidines. DNA molecule could be composed of ?

A

120 thymine and 120 adenine molecules

23
Q

Which of the following statements best summarizes the difference between DNA and RNA

A

DNA nucleotides contain a different sugar than RNA

24
Q

Which of the following can vary among monosaccharides ?

A

the number of carbon atoms

25
Q

what is the difference between an aldose sugar and a ketose sugar ?

A

the position of the carbonyl group

26
Q

All of the following are polysaccharides EXCEPT

A

ribose

27
Q

Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosdic linkage to one galactose molecule. How is lactose classified ?

A

a disaccharide

28
Q

A glycosidic linkage is analogous to which of the following in proteins ?

A

a peptide bond

29
Q

Cellulose is

A

a major structural component of plant cell walls

30
Q

Which of the following is NOT a polymer ?

A

ribose

31
Q

List the two components of theory

A

Pattern & Process

32
Q

The scientific name for baker yeast , Saccharomyces cerevisiae. Which part of this name consisting of the genus.

A

saccharomyces

33
Q

The element Calcium has 20 proton. How many electrons are found in the outer orbital ?

A

Two

34
Q

This covalent bond forms the primary structure of proteins .

A

peptide bond

35
Q

This type of bond must be broken for water to vaporize

A

Hydrogen bond

36
Q

Name the sugar found in DNA ?

A

Ribose

37
Q

This covalent bond between two carbohydrate

A

Glycosidic bond

38
Q

Name the secondary structures of DNA

A

Double helix

39
Q

Animal store sugar in this molecule

A

glycogen

40
Q

This chemical bonds involve the sharing of electrons between atoms

A

Non polar covalent bond

41
Q

List the pyrimidine found in nucleic acid

A

Cytosine , Uracil & Thymine

college biology (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions