Biology : ALPHA || Mohammad Alrousan ❤︝

A vibrant illustration of a scientist examining DNA strands and a variety of plants, representing adaptive immunity and genetics in a colorful lab setting.

Explore Your Biology Knowledge!

Welcome to the Biology: ALPHA quiz! This engaging quiz is designed to test your understanding of various biological concepts, from adaptive immunity to the intricacies of DNA and genetics. Sharpen your skills and gain deeper insights into the fascinating world of biology.

Whether you're a student, a teacher, or simply a biology enthusiast, this quiz offers:

31 thought-provoking multiple-choice questions
Detailed explanations for each answer
A fun way to assess your biology knowledge

31 Questions8 MinutesCreated by StudyingBat215

Which of the following is a characteristic of adaptive immunity?

It has the ability to detect very specific pathogens

Responses are the same whether or not the pathogen has been previously encountered

Responses are active immediately upon infection

It is found only in invertebrates

It is common to all animals

The human genome is minimally contained in which of the following?

Every human cell

Each human chromosome

The entire DNA of a single human

The entire human population

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

There is considerable genetic variation in garden peas.

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

Recessive genes occur more frequently in the F1 generation than do dominant ones.

Genes are composed of DNA.

How do we describe transformation in bacteria?

The creation of a strand of DNA from an RNA molecule

The creation of a strand of RNA from a DNA molecule

The infection of cells by a phage DNA molecule

Assimilation of external DNA into a cell

In humans, the first line of defense against infection is ______

Which of the following defines a genome?

Representation of a complete set of a cell's polypeptides

The complete set of an organism's polypeptides

The complete set of a species' polypeptides

The complete set of an organism's genes

Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?

16%

31%

42%

In the digestive system, peristalsis is

a process of fat emulsification in the small intestine.

Voluntary control of the rectal sphincters regulating defecation.

The transport of nutrients to the liver through the hepatic portal vessel

Smooth muscle contractions that move food along the esophagus

At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?

Prophase

Metaphase

Anaphase

Telophase

Two plants are crossed, resulting in offspring with a 3:1 ratio for a particular trait. What does this suggest?

That the parents were true-breeding for contrasting traits

That the trait shows incomplete dominance

That a blending of traits has occurred

That the parents were both heterozygous for a single trait

Hershey and Chase set out to determine what molecule served as the unit of inheritance. They completed a series of experiments in which E. Coli was infected by a T2 virus. Which molecular component of the T2 virus actually ended up inside the cell?

DNA

RNA

Protein

Ribosome

Local swelling, increased blood flow, and fever are all parts of __________

Passive immunity

An inflammatory response

Humoral immunity

Active immunity

Which of the following is true of a species that has a chromosome number of 2n = 16?

The species is diploid with 32 chromosomes per cell.

The species has 16 sets of chromosomes per cell.

Each cell has eight homologous pairs

During the S phase of the cell cycle there will be 32 separate chromosomes.

Mendel accounted for the observation that traits which had disappeared in the F1 generation reappeared in the F2 generation by proposing that

New mutations were frequently generated in the F2 progeny, "reinventing" traits that had been lost in the F1

The mechanism controlling the appearance of traits was different between the F1 and the F2 plants.

Traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1

The traits were lost in the F1 due to dominance of the parental traits.

An Okazaki fragment has which of the following arrangements?

Primase, polymerase, ligase

3' RNA nucleotides, DNA nucleotides 5'

DNA polymerase I, DNA polymerase III

5' RNA nucleotides, DNA nucleotides 3'

When the digestion and absorption of organic molecules results in more energy- rich molecules than are immediately required by an animal, the excess is

Eliminated in the feces.

Stored as starch in the liver.

Stored as glycogen in the liver and muscles.

Oxidized and converted to ATP.

Hydrolyzed and converted to ADP.

Which type of cell is responsible for causing apoptosis in cancer cells and virus-infected cells?

The homologous chromosomes are:

Have the genes controlling the same inherited characters

Have the genes controlling different inherited characters

Found in gametes

All of the above

In Tay - Sachs disease, what is the type of dominance at organismal level?

Incomplete dominance

Multiple alleles

Complete dominance

Epistasis

The cardiac output is the volume of blood pumped into the systemic circulation per minute and depends on both the heart rate and stroke volume

Biology : ALPHA || Mohammad Alrousan ❤︝

Explore Your Biology Knowledge!

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