Biology Test Review Questions

A detailed illustration of various biological structures, including cells, DNA, and chromosomes, with vibrant colors and labels highlighting key concepts related to the quiz.

Ultimate Biology Test Review Quiz

Prepare yourself for an exciting journey through the world of biology with our comprehensive quiz! This test includes challenging questions that cover a wide range of topics, including cell biology, genetics, and molecular biology.

Test your knowledge and see how much you really know about the fundamentals of biology! Here are some features of the quiz:

50 engaging multiple-choice questions
Diverse topics from DNA structure to cell division
Ideal for students and biology enthusiasts

50 Questions12 MinutesCreated by LearningTree42

A basic difference between spermatogenesis and oogenesis is that in oogenesis

Four functional eggs are produced

The chromosome number is not divided in half

Both sperm and egg are produced

One functional egg is produced

Which of the following proteins would you expect to be a coded for by a proto-oncogene?

A DNA repair protein

A caspase

A protein involved with the G1 checkpoint

a growth factor receptor

Which of the following is not true concerning the checkpoints in the cell cycle?

Mitosis stops if chromosomes are not properly aligned.

If DNA is damaged, apoptosis may occur.

Mitosis will not occur if DNA is damaged or not replicated.

The first checkpoint is located in the S phase of interphase.

What lines up at the metaphase plate during metaphase II of meiosis and metaphase of mitosis?

Homologous chromosomes at both

Homologous chromosomes for meiosis, each chromosome composed of two sister chromatids for mitosis

Each chromosome composed of two sister chromatids at both

Each chromosome composed of two sister chromatids for meiosis, each chromosome composed of one sister chromatid for mitosis

Each chromosome composed of two sister chromatids for meiosis, homologous chromosomes for mitosis

Upon examination, a cell is found to have twice as much DNA as the normal diploid state but is no longer in the process of replicating the DNA. All of the DNA is found within a single nucleus. Which stage of the cell cycle is this cell in?

G2 phase

M phase

S phase

G1 phase

Which sequence of stages in mitosis is correct?

Anaphase, interphase, telophase, prophase

Interphase, metaphase, prophase, anaphase

Prophase, metaphase, anaphase, telophase

Prophase, metaphase, interphase, telophase

Which type of genes, when abnormally activated so that protein is always present and active, can result in cancer?

Proto-oncogenes

Tumor suppressor genes

Executioner caspase genes

DNA repair protein genes

Which is NOT a correct association?

M stage-mitosis and cytokinesis

S stage-DNA synthesis

G2 stage-metabolic preparation for mitosis

interphase-shortest stage of the cell cycle

Meiosis results in a change in chromosome number indicated by

2n to 2n in diploid organisms, n to n in haploid.

2n to n.

2n to 2n.

N to 2n.

Which of the following is not involved in the regulation of the cell cycle?

Cyclins

Growth factors

Internal and external signals

Caspases

Which of the following statements is NOT true about oogenesis in humans?

It occurs in the ovary.

The egg will contain 23 chromosomes.

At least two nonfunctional polar bodies will form.

Four equal size daughter cells will form.

The individual(s) credited with the discovery of the structure of DNA is (are)

Rosalind Franklin and Maurice Wilkins.

James Watson and Francis Crick.

Erwin Chargaff.

Charles Darwin and Gregor Mendel.

The function of transfer RNA is to

Turn DNA on and off.

Act as the site for protein synthesis.

Transmit coded information to the cytoplasm.

Carry amino acids to ribosomes.

In semiconservative DNA replication, each new double helix formed will have

One new and one old strand in each helix.

Two new strands and two old strands.

Two new strands in one helix and two old strands in the other helix.

Two new and one old strand in one helix and two old and one new strand in second helix.

The correct sequence of events in the production of a polypeptide is

Initiation - elongation - termination.

Elongation - initiation - termination.

Initiation - termination - elongation.

Elongation - termination - initiation.

Which does NOT describe a function of the DNA polymerase molecule?

Nucleotides are joined by hydrogen bonds

Read the strand of old DNA and recognize the base there

Synthesize the proper nucleotide to match with the base read on the old strand

Proofread to ensure that the proper base has been incorporated recognize the free nucleotide that pairs with the base on the old strand of DNA

During the process of transcription, the information in

RNA is converted into protein information.

A protein is converted into RNA information.

DNA is converted into RNA information.

DNA is converted into protein information.

RNA is converted into DNA information.

In a testcross, an organism with a dominant phenotype, but unknown genotype is crossed with which of the following to establish its genotype?

Homozygous dominant

Heterozygous dominant

Heterozygous

Homozygous recessive

What are alleles?

Genes for different traits, such as hair color and eye color

The locations of genes on a chromosome

Recessive forms of a kind of characteristic carried by genes

Alternative forms of a gene for a single trait, such as blue eyes or brown eyes

Which is NOT true according to Mendel's law of segregation?

Alleles separate from each other during gamete formation.

Each gamete contains one copy of each allele.

Each individual contains two alleles for each trait.

An individual can have either both dominant alleles, both recessive alleles, or a dominant and recessive allele.

Fertilization restores the presence of two alleles.

Which genetic disorder is associated with an irregular shape of the red blood cells?

Huntington disease

Cystic fibrosis (CF)

Sickle cell disease

Marfan syndrome

In which kind of cross could you expect to find ratios of 1:1:1:1 among the offspring?

One-trait test cross

Monohybrid cross

Two-trait test cross

Dihybrid cross

When two or more genes with multiple alleles affect the same trait in an additive fashion, it is termed

Polygenic inheritance.

Incomplete dominance.

A double-trait cross.

Codominant.

What are the chances that two individuals with wavy hair (an incomplete trait) will have a curly-haired child? Curly hair and straight hair exhibit incomplete dominance.

25%

75%

50%

None

In which kind of cross would you expect to find a phenotypic ratio of 3:1 among the F2 offspring?

Monohybrid cross

Homozygous recessive × homozygous dominant

Dihybrid cross

Homozygous dominant × heterozygous

A pheasant breeder starts with two birds in the P generation, one of which is AA and the other is aa. If he takes two of the birds from the F1 generation and breeds them together, what can he expect in his F2 offspring?

AA and Aa.

Aa only.

AA, Aa, and aa.

Aa and aa.

If a woman is a carrier for the color-blind recessive allele and her husband has normal vision, what are their chances that a son will be color-blind?

None, because the father is normal.

50%, since the mother is only a carrier.

100% because the mother has the gene.

25% because the mother is a hybrid.

None since the son will also be just a carrier.

Which refers to the movement of a piece of one chromosome to another nonhomologous chromosome?

Translocation

Inversion

Deletion

Duplication

Which of the following sex-linked diseases is characterized by the absence of a clotting factor?

None of the answer choices is true.

Hemophilia

Duchenne muscular dystrophy

Color-blindness

Considering that males can have Klinefelter (XXY) syndrome, XYY, and normal XY chromosomal combinations, and females can have Turner (XO) syndrome, poly-X (XXX, XXXX), and normal XX combinations, it is obvious that

Maleness results from the absence of two or more X chromosomes.

Femaleness results from the presence of two or more X chromosomes.

maleness results from the minimal presence of one Y chromosome.

Maleness results from the presence of only one X chromosome.