24 Questions
Who among the proponents of Cell Theory inferred that cells come from pre-existing cells?
Rudolf Virchow
Eukaryotic cells are always unicellular.
False
What is the primary function of the Golgi apparatus?
Modify proteins and determine their destination in the cell
The products of photosynthesis are ______________ and ______________.
glucose and oxygen
Which chemical bonding occurs when two ions of opposite charge attract each other?
Ionic bond
Match the following cell components with their functions:
Mitochondria = Generate energy for the cell Lysosome = Break down and recycle cellular waste Golgi apparatus = Modify proteins and determine their destination Centrioles = Form the spindle apparatus of a dividing cell
Chloroplasts are called the powerhouses of the cell.
False
What percentage of a human body's mass is comprised of carbon, oxygen, hydrogen, and nitrogen?
96%
Plant cells store energy in the form of __________, and animal cells store energy in the form of __________.
starch; glycogen
In third-degree (full-thickness) burns, the epidermis is not destroyed.
False
What is the main component of acid rain?
sulfuric acid and nitric acid
The presence of an unwanted impurity or constituent, which is not necessarily harmful but could be, in a material, physical body, or natural environment is known as __________.
pollution
Which of the following fibrous elements gives a connective tissue high tensile strength?
Collagen fibers
Match the following glands with their locations:
Sebaceous gland = Skin Apocrine sweat glands = Axillae, genitalia, and around the anus Eccrine sweat glands = Throughout the body Oil glands = Scalp
Dehydration occurs as a result of a third-degree burn.
True
What type of sweat glands produces secretions that are broken down by bacteria to produce body odor?
Apocrine sweat glands
What is the effect of blue-green algae on drinking water?
They are capable of producing cyanotoxins that damage the liver, nervous system, and skin.
Chlorofluorocarbons are a naturally occurring greenhouse gas.
False
What is the effect of ocean acidification on marine organisms?
Marine organisms struggle to stay healthy under increased acidity as they use more energy to maintain healthy body fluid chemistry.
In the genetic cross Hh X Hh, the progeny will have a ratio of ________ tall: short.
1:1
Match the following compounds with their properties:
Acetic acid and bromine = Capable of producing cyanotoxins Hexane and methane = Used to form shells and skeletons of many marine organisms Carbon dioxide = Greenhouse gas Chlorofluorocarbons = Entirely anthropogenic in origin
What is the result of a genetic cross between two F1-hybrid pea plants having yellow seeds in the F2 generation?
50% green-seeded plants
Mitosis involves the pairing of homologous chromosomes.
False
What is the effect of ocean acidification on the availability of calcium carbonate for marine organisms?
The availability of calcium carbonate will decline.
Study Notes
Cellular Energy Storage
- Plant cells store energy in the form of starch, and animal cells store energy in the form of glycogen.
Connective Tissue
- Collagen fibers give connective tissue high tensile strength.
Sweat Glands
- Apocrine sweat glands produce secretions that are broken down by bacteria to produce body odor.
Burns
- In third-degree (full-thickness) burns, both the epidermis and the dermis are destroyed, leading to loss of sensation in the burned area, but not increased sweating.
Pollution
- Pollution is the presence of an unwanted impurity or constituent, which is not necessarily harmful but could be, in a material, physical body, or natural environment.
Acid Rain
- Sulfuric acid and nitric acid are the main components of acid rain.
Cell Theory
- Rudolf Virchow inferred that cells come from pre-existing cells.
Human Body Composition
- Carbon, oxygen, hydrogen, and nitrogen comprise 96% of a human body's mass.
Prokaryotic and Eukaryotic Cells
- The primary difference between prokaryotic and eukaryotic cells is that a nucleus and other membrane-bound organelles are only present in eukaryotic cells.
- Eukaryotic cells are more than 100 to 10,000 times larger than prokaryotic cells and are much more complex.
Photosynthesis
- The products of photosynthesis are oxygen and glucose.
Cellular Organelles
- The Golgi apparatus can modify a protein and determine its destination in the cell.
Mitochondria
- Mitochondria are called the powerhouses of the cell because they directly provide ATP to the cell.
Chemical Bonding
- Ionic bond occurs when two ions of opposite charge attract each other.
Cell Cycle
- Centrioles play a role in the spindle apparatus of a dividing cell.
Algae and Drinking Water
- Blue-green algae can produce cyanotoxins that damage the liver, nervous system, and skin, affecting the drinking water consumed by living organisms.
Greenhouse Gases
- Chlorofluorocarbons are entirely anthropogenic in origin.
Ocean Acidification
- Ocean acidification affects aquatic life by reducing the availability of calcium carbonate, which is used to form shells and skeletons of many marine organisms.
Genetics
- A cross between Hh and Hh will result in 1:1 tall: short progeny.
- A genetic cross between two F1-hybrid pea plants having yellow seeds will yield 25% green-seeded plants in the F2 generation.
This quiz assesses knowledge on how plant and animal cells store energy and the characteristics of connective tissue. Identify the correct statements about energy storage and tensile strength in connective tissue.
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