Practice Tests

Question 1

What feature of canon and that makes life possible

Answer 1

Carbon has a max of 4 covalent bonds

Question 2

Water held behind a dam would best reflect

Answer 2

Potential energy

Question 3

A chemical reaction that has a positive G is correctly described as

Answer 3

Endergonic

Question 4

Which of the following is not a product of light reactions of photosynthesis

Answer 4

ATP

Question 5

During non cyclic electron flow of the light reaction, which molecule is the final accepter?

Answer 5

NADPH+

Question 6

A cross between homozygous purple flowered and homozygous white flowered pea plants results in offspring with purple flowers. This demonstrates

Answer 6

Dominance

Question 7

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants

Answer 7

Traits are inherited in discrete units, and are not the results of blending

Question 8

What is genetic cross between an individual showing a dominant phenotype bite of unknown genotype and a homozygous recessive individual called

Answer 8

Testcross

Question 9

When crossing a Homo’s I guess recessive with a heterozygote, what is the chance of getting an offspring with the Homo was I guess recessive phenotype

Answer 9

50%

Question 10

What is the mechanism for the production of genetic recombinants

Answer 10

Crossing over an independent assortment

Question 11

A man who carries an X linked allele will pass it on to

Answer 11

All of his daughters

Question 12

What kind of chemical bond that is form found between paied bases and the DNA double helix

Answer 12

Hydrogen

Question 13

What is the function of DNA polymerase

Answer 13

To add nucleotides to the end of a growing DNA strand

Question 14

Cytosine makes up 38% of the nucleotides in a sample of DNA from an organism. Approximately, what percentage of the nucleotides in this sample will be thymine

Answer 14

12

Question 15

In his transformation experiments, what did Griffith Observer

Answer 15

Mixing a heat killed path of genetic strain of bacteria with a living non-pathogenic strain can convert some of the living cells into the pathogenic form

Question 16

An Okazaki Fragment has which of the following arrangements

Answer 16

5’ RNA nucleotides, DNA nucleotides 3’

Question 17

Which of the following help the whole the DNA strands apart while they are being replicated

Answer 17

Single-stranded binding proteins

Question 18

What kind of molecule or substance is the primer that is used to initiate the synthesis of a new DNA strand

Answer 18

RNA

Question 19

After DNA is completed

Answer 19

Each new DNA double helix consists of one or DNA strand and one new DNA strand

Question 20

Once transcribed, Eukaryotic mRNA typically undergoes substantial alteration that includes

Answer 20

Excision of introns

Question 21

The process that produces mRNA from DNA is called

Answer 21

Transcription

Question 22

Where transcription begins

Answer 22

The promoter

Question 23

Alternative Slicing

Answer 23

Enables a single gene to go to her more polypeptides that are different in their amino acid sequence

Question 24

Which of the following molecules exhibit self splicing

Answer 24

rRNA and tRNA

Question 25

Go to the following statements about the mRNA start codon is incorrect

Answer 25

The start codon is usually GGA

Question 26

What illustrates the pairing of DNA and RNA nucleotides

Answer 26

GTTACG

CAAUGC

Question 27

Considering the components of a nucleotide, what component is always different when comparing nucleotides in a DNA strand and in an RNA strand

Answer 27

Pentose sugar

Question 28

Which of the following equations is appropriate when considering DNA base composition

Answer 28

A + G = T+ C

Question 29

What statement is correct ones that are in the process of DNA replication

Answer 29

New DNA molecules are composed of one strand from the old molecule and one new strand

Question 30

Why did researchers initially believe the genetic material with protein

Answer 30

Proteins are more bio chemical complex than DNA

Question 31

An individual has two different alleles of a particular gene is said to be

Answer 31

Heterozygous

Question 32

Which of Mendels laws cannot be observed in a single factor cross

Answer 32

Independent assortment

Question 33

A gene that affects more than one trait is said to be

Answer 33

Pleiotropic

Question 34

Genes located on a sex chromosome is said to be

Answer 34

Sex linked

Question 35

Went to jeans are located on the same chromosome they are set to be

Answer 35

Linked

Question 36

Based on the ideas proposed by Morgan, which of the following statements concerning the linkage is not true

Answer 36

A crossover is more likely to occur in the region in a gene between two genes that are close together that in a region between two genes that are far apart

Question 37

In genetic mapping, one map unit is equivalent to

Answer 37

1% recombination frequency

Question 38

Extra nuclear inheritance occurs because

Answer 38

Some organelles contain DNA

Question 39

Calico coat pattern in cats is the result of

Answer 39

X chromosome inactivation