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Quiz about Integrated Questions on General Biology

Integrated Questions on General Biology Quiz

Questions from topics in chemistry, anatomy, cell biology, physiology, histology, embryology, biochemistry, invertebrate zoology, plant physiology, and genetics. Get ready, and good luck!

A multiple-choice quiz by AlvarezMD. Estimated time: 7 mins.

Author
AlvarezMD

Time
7 mins

Type
Multiple Choice

Quiz #
336,768

Updated
Dec 03 21

# Qns
10

Difficulty
Difficult

Avg Score
4 / 10

Plays
5515

Awards
Top 20% Quiz

Last 3 plays: Guest 67 (4/10), Guest 136 (3/10), Guest 67 (6/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Chemistry

Diffusion is the constant and random movement of particles (molecules, atoms, ions) in which direction? Hint

from a lower concentration to a higher concentration

from a higher concentration to a lower concentration

to a concentration favorable for the particles

towards the pull of gravity (downward motion)

NEXT>

Question 2 of 10

2. Anatomy

The human heart is found within which compartment in the thoracic region? Hint

superior mediastinum

posterior mediastinum

inferior mediastinum

middle mediastinum

NEXT>

Question 3 of 10

3. Cell Biology

Which of these cellular processes DOES NOT occur in the cytoplasm of the cell? Hint

Glycolysis

Citric Acid Cycle

Translation

Lactic Acid Fermentation

NEXT>

Question 4 of 10

4. Physiology

In a nerve cell, what is the difference between the charge inside the cell and the charge outside the cell at its resting state? Hint

Resting Membrane Potential

Spatial Summation

Action Potential

Temporal Summation

NEXT>

Question 5 of 10

5. Histology

This is the hardest working muscle in the body.
What is its muscle tissue called?

(It is known to be striated, sometimes binucleated, branching, and contains intercalating disks.) Hint

skeletal muscle

cardiac muscle

smooth muscle

rough muscle

6. Embryology

Oocytes are developing egg cells found in the ovaries. They are surrounded by follicular cells.
In a matured Graafian follicle, what is this clear / transparent layer found immediately outside the oocyte? Hint

antrum

corona radiata

zona pellucida

cumulus oophorus

NEXT>

Question 7 of 10

7. Biochemistry

Hemoglobin is a globular protein with 2 alpha and 2 beta sub-units. Hemoglobin is responsible for carrying oxygen and delivering them to different parts of the body.
How do you describe hemoglobin as a structure (containing 4 sub-units)? Hint

primary structure

tertiary structure

quaternary structure

secondary structure

NEXT>

Question 8 of 10

8. Invertebrate Zoology

The Plasmodium species (the protozoan that causes malaria) has a complicated life cycle. It reproduces sexually and asexually. It also has two hosts, namely the Anopheles mosquito and human beings.
What kind of host is the Anopheles mosquito? Hint

Indefinite host (either sexual or asexual reproduction occurs)

Intermediate host (where asexual reproduction occurs)

Definitive host (where sexual reproduction occurs)

Contingent host (where no reproduction occurs)

NEXT>

Question 9 of 10

9. Plant Physiology
Cacti (singular cactus) make use of the Crassulacean Acid Metabolism (CAM) photosynthesis. In this kind of photosynthesis, the stomata on the leaves are opened only during night time (to conserve water loss during day time). This is the only time carbon dioxide can go inside the leaves. But the leaves cannot perform photosynthesis without sunlight.
Therefore, carbon dioxide first is stored in the leaves as _________________ . Hint

lactic acid

carboxylic acid

malonic acid

malic acid

NEXT>

Question 10 of 10

10. Genetics
A normal male individual has an XY chromosome and has functional testes.
A normal female individual has an XX chromosome and has functional ovaries.

In Turner's syndrome or gonadal dysgenesis, there is a failure to form a functional gonad (either a testis or ovary).
What kind of sex chromosome does a person exhibiting Turner's syndrome have? Hint

X chromosome

XXY chromosome

Y chromosome

XYY chromosome

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Quiz Answer Key and Fun Facts

1. Chemistry Diffusion is the constant and random movement of particles (molecules, atoms, ions) in which direction?

Answer: from a higher concentration to a lower concentration

Diffusion is the constant movement of particles going along the concentration gradient, that is from a higher concentration to a lower concentration. The ultimate goal of diffusion is to achieve the state of equilibrium within the space in which the particles have diffused.

2. Anatomy The human heart is found within which compartment in the thoracic region?

Answer: middle mediastinum

The middle mediastinum is where the human heart is found. It's borders include the sternum in front, the lungs and primary bronchi at the back, and the diaphragm below.

3. Cell Biology Which of these cellular processes DOES NOT occur in the cytoplasm of the cell?

Answer: Citric Acid Cycle

Glycolysis, translation and lactic acid fermentation occur in the cytoplasm of the cell. Meanwhile, citric acid cycle, also known as the Kreb's cycle or the tricarboxylic acid cycle (TCA), occurs in the mitochondrial matrix.

4. Physiology In a nerve cell, what is the difference between the charge inside the cell and the charge outside the cell at its resting state?

Answer: Resting Membrane Potential

The resting membrane potential is maintained by integral proteins found across the plasma membrane that act as ion pumps. It is approximately -70 millivolts. During depolarization, where there is an influx of sodium ions (going inside the cell), the membrane potential becomes less negative. An action potential occurs when the threshold (usually +30 millivolts) is reached during depolarization. A nerve impulse is generated ONLY when the threshold is reached (presence of action potential).

Spatial summation is achieved upon stimulation of a cell at different points, while temporal summation is achieved upon multiple stimulation of a cell at the same point.

5. Histology This is the hardest working muscle in the body. What is its muscle tissue called? (It is known to be striated, sometimes binucleated, branching, and contains intercalating disks.)

Answer: cardiac muscle

Cardiac muscles are striated muscles just like skeletal muscles. They can be sometimes binucleated, unlike skeletal and smooth muscles which are mononucleated. They are well-known for their intercalating disks, containing gap junctions where chemical and electrical transmission of substances occur to enable the heart to contract voluntarily.

6. Embryology Oocytes are developing egg cells found in the ovaries. They are surrounded by follicular cells. In a matured Graafian follicle, what is this clear / transparent layer found immediately outside the oocyte?

Answer: zona pellucida

The zona pellucida is the layer found immediately after the oocyte in a matured Graafian follicle. Corona radiata are cells surrounding the oocyte within the zona pellucida. Cumulus oophorus are also cells surrounding both the oocyte and the antrum (cavity).

7. Biochemistry Hemoglobin is a globular protein with 2 alpha and 2 beta sub-units. Hemoglobin is responsible for carrying oxygen and delivering them to different parts of the body. How do you describe hemoglobin as a structure (containing 4 sub-units)?

Answer: quaternary structure

The primary structure of a protein is the sequence of amino acids in a peptide chain, and is stabilized by the peptide bonds (bond between 2 amino acids).

The secondary structure of a protein can either be helices, sheets, or loops of the protein caused and stabilized by the hydrogen bonds of the functional groups of each amino acid.

The tertiary structure is the folded and the three-dimensional structure a protein that is stabilized by disulfide bonds, ionic bonds, hydrogen and hydrophilic bonds.

The quaternary structure of a protein is best described as a protein being constituted by two or more protein sub-units or tertiary structures.

8. Invertebrate Zoology The Plasmodium species (the protozoan that causes malaria) has a complicated life cycle. It reproduces sexually and asexually. It also has two hosts, namely the Anopheles mosquito and human beings. What kind of host is the Anopheles mosquito?

Answer: Definitive host (where sexual reproduction occurs)

In parasitology, a definitive host is where the parasite's life cycle is in its sexual phase. The asexual phase of a parasite's life cycle occurs in the intermediate host. In this case, sexual phase of the Plasmodium's life occurs inside the Anopheles mosquito, making it the definitive host. The asexual phase of the Plasmodium's life occurs in humans, making us intermediate hosts.

9. Plant Physiology Cacti (singular cactus) make use of the Crassulacean Acid Metabolism (CAM) photosynthesis. In this kind of photosynthesis, the stomata on the leaves are opened only during night time (to conserve water loss during day time). This is the only time carbon dioxide can go inside the leaves. But the leaves cannot perform photosynthesis without sunlight. Therefore, carbon dioxide first is stored in the leaves as _________________ .

Answer: malic acid

Cacti store carbon dioxide as malic acid. They try to conserve water (because water loss is serious in the desert) by closing their stomata while compromising the entrance of carbon dioxide. So to accommodate carbon dioxide, the stomata only opens at night and they are stored as malic acid in the absence of sunlight. During day time, carbon dioxide is released from malic acid to proceed with the process of photosynthesis.

10. Genetics A normal male individual has an XY chromosome and has functional testes. A normal female individual has an XX chromosome and has functional ovaries. In Turner's syndrome or gonadal dysgenesis, there is a failure to form a functional gonad (either a testis or ovary). What kind of sex chromosome does a person exhibiting Turner's syndrome have?

Answer: X chromosome

Turner's syndrome or gonadal dysgenesis do not develop mature and functional testes or ovaries because its sex chromosome is only X (or Xo). A Y-chromosome is needed to develop functional testes, while a pair of X (or XX) is needed to develop functional ovaries.

Source: Author AlvarezMD

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