Quiz Genetics

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Genetics

 

 

True/False
Indicate whether the sentence or statement is true or false.
1.
Genetics is the branch of biology that involves the study of how different traits are transmitted from one generation to the next.
2.
Mendel discovered predictable patterns in the inheritance of traits.
3.
The scientific study of heredity is called genetics.
4.
In Mendel’s experiments with the flower color of pea plants, only the parental generation produced white flowers.
5.
Mendel concluded that the patterns of inheritance are determined entirely by the environment.
6.
The law of independent assortment was proposed by Mendel to explain his observations of inheritance patterns.
7.
Genes on chromosomes are the units of inheritance.
8.
The allele for a recessive trait is usually represented by a capital letter.
9.
Heterozygous individuals have two of the same alleles for a particular gene.
10.
A probability of 1/4 is equal to a probability of 75 percent.
11.
The dominant allele for tallness in pea plants is represented by the letter t.
12.
In codominance, two alleles are expressed at the same time.
13.
All genes have only two alleles.
14.
A dihybrid cross involves two pairs of contrasting traits.
15.
Crosses involving a study of one gene are called monohybrid crosses.
 

Completion
Complete each sentence or statement.
16.
A reproductive process in which fertilization occurs within a single plant is ____________________.

17.
Mendel produced strains of pea plants through the process of ____________________.

18.
____________________ refers to the transmission of traits from parent to offspring in sexually reproducing organisms.

19.
In heterozygous individuals, only the ____________________ allele achieves expression.

20.
A trait that is not expressed in the F1 generation resulting from the crossbreeding of two genetically different, true-breeding organisms is called ____________________.

21.
The principle that states that one factor may mask the effect of another factor is the principle of ____________________.

22.
In Mendel’s experiments, a trait that disappeared in the F1 generation but reappeared in the F2 generation was always a ____________________.

23.
The cellular process that results in the segregation of Mendel’s factors is ____________________.

24.
Mendel formulated two principles known as the laws of ____________________.

25.
An organism that has two identical alleles for a trait is called ____________________.

26.
An organism’s ____________________ refers to the set of alleles it has inherited.

27.
The likelihood that a specific event will occur is called ____________________.

In pea plants, tallness (T) is dominant to shortness (t). Crosses between plants with these traits can be analyzed using a Punnett square similar to the one shown below.
T
t
T
1
2
t
3
4
28.
Refer to the illustration above. The parents shown in the Punnett square could have offspring with a genotype ratio of ____________________.

29.
Refer to the illustration above. The phenotype of the plant that would be represented in box “4” of the Punnett square would be ____________________.

30.
A cross involving two pairs of contrasting traits is a(n) ____________________ cross.

 

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Protein Synthesis Study Guide

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Protein Synthesis Study Guide

 

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 1.
What did Griffith observe when he injected into mice a mixture of heat-killed disease-causing bacteria and live harmless bacteria?
a.
The disease-causing bacteria changed into harmless bacteria.
b.
The mice developed pneumonia.
c.
The harmless bacteria died.
d.
The mice were unaffected.
 2.
Which of the following is a nucleotide found in DNA?
a.
ribose + phosphate group + thymine
b.
ribose + phosphate group + uracil
c.
deoxyribose + phosphate group + uracil
d.
deoxyribose + phosphate group + cytosine
 3.
DNA replication results in two DNA molecules,
a.
each with two new strands.
b.
one with two new strands and the other with two original strands.
c.
each with one new strand and one original strand.
d.
each with two original strands.
 4.
During mitosis, the
a.
DNA molecules unwind.
b.
histones and DNA molecules separate.
c.
DNA molecules become more tightly coiled.
d.
nucleosomes become less tightly packed.
 5.
Unlike DNA, RNA contains
a.
adenine.
c.
phosphate groups.
b.
uracil.
d.
thymine.
 6.
Which type(s) of RNA is(are) involved in protein synthesis?
a.
transfer RNA only
b.
messenger RNA only
c.
ribosomal RNA and transfer RNA only
d.
messenger RNA, ribosomal RNA, and transfer RNA
 7.
During transcription, an RNA molecule is formed
a.
that is complementary to both strands of DNA.
b.
that is complementary to neither strand of DNA.
c.
that is double-stranded.
d.
inside the nucleus.
 8.
How many codons are needed to specify three amino acids?
a.
3
c.
9
b.
6
d.
12
 9.
Which of the following terms is LEAST closely related to the others?
a.
intron
c.
polypeptide
b.
tRNA
d.
anticodon
 10.
Which type of RNA functions as a blueprint of the genetic code?
a.
rRNA
c.
mRNA
b.
tRNA
d.
RNA polymerase
 11.
Which of the following is NOT a gene mutation?
a.
inversion
c.
deletion
b.
insertion
d.
substitution
 12.
Which of the following statements is NOT true?
a.
Mutations do not occur in hox genes.
b.
Hox genes that are found in different animals are very different from each other.
c.
Hox genes control the normal development of an animal.
d.
Hox genes occur in clusters.
 13.
Avery’s experiments showed that bacteria are transformed by
a.
RNA.
c.
proteins.
b.
DNA.
d.
carbohydrates.
 14.

Figure 12-5 shows the structure of a(an)

mc014-1.jpg

 

Figure 12–5

a.
DNA molecule.
c.
RNA molecule.
b.
amino acid.
d.
protein.
 15.
DNA is copied during a process called
a.
replication.
c.
transcription.
b.
translation.
d.
transformation.
 16.
In eukaryotes, DNA
a.
is located in the nucleus.
c.
is located in the ribosomes.
b.
floats freely in the cytoplasm.
d.
is circular.
 17.
RNA contains the sugar
a.
ribose.
c.
glucose.
b.
deoxyribose.
d.
lactose.
 18.
Which RNA molecule carries amino acids?
a.
messenger RNA
c.
ribosomal RNA
b.
transfer RNA
d.
RNA polymerase
 19.
What is produced during transcription?
a.
RNA molecules
c.
RNA polymerase
b.
DNA molecules
d.
proteins
 20.

What does Figure 12-6 show?

mc020-1.jpg

Figure 12-6

a.
anticodons
b.
the order in which amino acids are linked
c.
the code for splicing mRNA
d.
the genetic code
 21.
What happens during the process of translation?
a.
Messenger RNA is made from DNA.
b.
The cell uses information from messenger RNA to produce proteins.
c.
Transfer RNA is made from messenger RNA.
d.
Copies of DNA molecules are made.
 22.
Genes contain instructions for assembling
a.
purines.
c.
proteins.
b.
nucleosomes.
d.
pyrimidines.
 23.
A mutation that involves a single nucleotide is called a(an)
a.
chromosomal mutation.
c.
point mutation.
b.
inversion.
d.
translocation.
 

Completion
Complete each statement.
 24.

The structure labeled X in Figure 12-1 is a(an) ____________________.

co024-1.jpg

 

Figure 12–1

 25.
The order of nitrogenous bases in DNA determines the order of ____________________ in proteins.

 26.
There is no ____________________ that is specified by a stop codon on an mRNA molecule.

 27.
The lac repressor releases the operator in the presence of ____________________.

 28.
In eukaryotes, proteins that attract RNA polymerase bind to ____________________ sequences in DNA.

 29.
According to the principle of ____________________, hydrogen bonds can form only between adenine and thymine, and between guanine and cytosine.

 30.
Chromatin contains proteins called ____________________.

 31.

In Figure 12-7, A, B, and C are three types of ____________________.

co031-1.jpg

 

Figure 12–7

 32.
After introns are cut out of an RNA molecule, the remaining ____________________ are spliced back together to form the final messenger RNA.

 33.
A mutation in a series of genes, called the ____________________, can change the organs that develop in specific parts of an embryo.

 

Short Answer
 34.
At the beginning of DNA replication, what two processes “unzip” the two strands of a DNA molecule?

 35.

In Figure 12-2, which molecule is tRNA, and what is its function?

sa035-1.jpg

 

Figure 12–2

 36.

According to Figure 12-3, what codons specify the amino acid arginine?

sa036-1.jpg

 

Figure 12–3

 37.
What happens to lac repressors in E. coli when lactose is present?

 38.
What are the three main parts of an RNA nucleotide?

 39.
What must happen to a DNA molecule before RNA polymerase can make RNA?

 40.
What causes translation to stop?

 41.
What is a mutation?

 

Essay
 42.
Describe the structure of a DNA molecule.

 43.
Contrast the functions of the three main types of RNA.

 

Other

USING SCIENCE SKILLS

nar001-1.jpg

 

Figure 12–4

 44.
Interpreting Graphics What process is illustrated in Figure 12-4?

 45.
Interpreting Graphics Identify structure C in Figure 12-4.

 46.
Interpreting Graphics Which labeled structure in Figure 12-4 is a codon?

 47.
Inferring What is the relationship between the codons and anticodons in Figure 12-4? How is this relationship important?

 48.
Predicting In Figure 12-4, what will happen after the ribosome joins the methionine and phenylalanine?

USING SCIENCE SKILLS

nar002-1.jpg

Figure 12–8

 49.
Classifying What general type of mutation results from processes A, B, C, and D in Figure 12-8?

 50.
Interpreting Graphics In Figure 12-8, which process or processes involve two chromosomes?

 51.
Comparing and Contrasting Contrast process A and process B in Figure 12-8.

 52.
Interpreting Graphics During which process in Figure 12-8 does a segment of a chromosome become oriented in the reverse direction?

 53.
Interpreting Graphics In Figure 12-8, which process produces two chromosomes with translocations?

 

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Quiz Protein Synthesis

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Protein Synthesis

 

 

Completion
Complete each sentence or statement.
1.
In eukaryotes, gene expression is related to the coiling and uncoiling of ____________________.

2.
A DNA subunit composed of a phosphate group, a five-carbon sugar, and a nitrogen-containing base is called a(n) ____________________.

3.
The name of the five-carbon sugar that makes up a part of the backbone of molecules of DNA is ____________________.

4.
Knowing the order of the bases in a gene permits scientists to determine the exact order of the amino acids in the expressed ____________________.

5.
Due to the strict pairing of nitrogen base pairs in DNA molecules, the two strands are said to be ____________________ to each other.

6.
According to base-pairing rules, adenine pairs with ____________________ and guanine pairs with ____________________.

7.
The enzyme that is responsible for replicating molecules of DNA by attaching complementary bases in the correct sequence is ____________________.

8.
Enzymes called ____________________ are responsible for unwinding the DNA double helix by breaking the hydrogen bonds that hold the complementary strands together.

9.
The process by which DNA copies itself is called ____________________.

10.
Molecules of ____________________ carry instructions for protein synthesis from the nucleus to the cytoplasm.

11.
The nitrogen-containing base that is found only in RNA is ____________________.

12.
The enzyme responsible for making RNA is called ____________________.

13.
The form of ribonucleic acid that carries genetic information from the DNA to the ribosomes is ____________________.

14.
A ____________________ is a sequence of DNA at the beginning of a gene that signals RNA polymerase to begin transcription.

15.
Messenger RNA is produced during the process of ____________________.

16.
Of the 64 codons of mRNA, 61 code for ____________________, 3 are ____________________ signals, and one is a ____________________ signal.

17.
Nucleotide sequences of tRNA that are complementary to codons on mRNA are called ____________________.

18.
The sequence of three nucleotides that code for specific amino acids or stop signals in the synthesis of protein is called a(n) ____________________.

19.
The information contained in a molecule of messenger RNA is used to make protein during the process of ____________________.

20.
During translation, amino acids are brought to the ribosomes by molecules of ____________________.

 

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Quiz Cells

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Cells

 

 

True/False
Indicate whether the sentence or statement is true or false.
1.
Robert Hooke observed cork cells under a microscope.
2.
Anton van Leeuwenhoek concluded that all plants are composed of cells.
3.
All living things are composed of many cells.
4.
A cell is the smallest unit that can carry on all the processes of life.
5.
Inside smaller cells, materials and information can be transported more quickly.
6.
Membranes are selectively permeable if they allow only certain substances to diffuse across them.
7.
Lysosomes carry on cellular respiration.
8.
Microtubules and microfilaments form the cytoskeleton of cells.
9.
Colonial organisms differ from single-celled organisms in that each cell cannot support its own existence.
 

Completion
Complete each sentence or statement.
10.
The statement that “cells are produced only from existing cells” is part of the ____________________.

11.
The ratio of surface area to volume puts limitations on a cell’s ____________________.

12.
Eukaryotic cells are much larger and have more specialized functions than prokaryotic cells because they contain ____________________ which take up space and carry out specialized activities.

13.
A cell with a well-defined nucleus surrounded by a nuclear membrane is called a(n) ____________________ cell.

14.
A cell membrane is said to be ____________________ permeable because it allows the passage of some solutes and not others.

15.
____________________ molecules have “heads” and “tails” and are found in the cell membrane.

16.
Scientists have discovered that cells contain smaller specialized structures known as ____________________.

17.
The spherical organelles that are the site of protein synthesis in a cell are the ____________________.

18.
The meshlike network of protein fibers that supports the shape of the cell is called the ____________________.

19.
The fluid portion of the cytoplasm is called the ____________________.

20.
Photosynthesis takes place in the ____________________ of plant cells.

 

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Biomes of the World

%CODE1% Biomes of the World

 

T S O V C D A R P R L V T T S
Q S L U E I E B E G A L U D R
X T E S S M T T I V D E N B T
N A E R U E A O V O I M D H K
Z R U S O W R J I N T O R E R
T M N T H F C O H B R I A R E
S O L S N H N A V C E B C B C
C P E R F K Q I R I T A F I U
N R S A V A N N A N N Y C V D
F E N I R A M F D R I M U O O
G R A S S L A N D Z A V O R R
S U O U D I C E D G N J O E P
O H Z G L J Y X I B Y X F R W
U C T C T N Y A Q B A J S U E
X N B S O O T D E K P T N B X

Find each term and then number and define it on the back of this sheet.

 

ABIOTIC BIOME BIOTIC
CARNIVORE CONSUMER DECIDUOUS
DESERT FRESHWATER GRASSLAND
HERBIVORE INTERTIDAL MARINE
OMNIVORE PRODUCER RAINFOREST
SAVANNA TAIGA TUNDRA