Organs are composed of tissues, which are composed of cells. This is an example of which characteristics of life?
Living things have levels of hierarchical organization.
A fossil was once a living organism but its tissues have now been replaced by minerals and it no longer exhibits most properties of life, except for:
Outside, the non-living world is unorganized and chaotic while inside the cell or organism there is a relatively constant environment; maintaining this environment is a process of:
A kernel of corn contains an embryo plant that is capable of becoming a complex plant with roots, stalks, leaves, and ears of corn. This potential reflects which property of life?
Growth and development.
Which sequence correctly lists the different levels of biological organization?
Which of the following is the correct order of levels of organization from small to large?
To measure the activity of the human brain, a RADIOACTIVE sugar is injected in the carotid artery and is utilized by those cells that are most active. This shows up on a PET scan and demonstrates the detection of:
You can hold a water droplet between two fingertips held slightly apart. This is an example of what property?
Cohesion of water molecules from hydrogen bonding.
The water strider is an insect that skates across the water without sinking. The tips of its feet should be coated with molecules that are:
If the pH of the saliva is slightly basic. Which of the following would therefore be an expected pH for Saliva?
Which is NOT a correct association of organic molecules?
Fatty acids full of hydrogen's are unsaturated.
A genetic mutation can cause a change in the SEQUENCE of the 20 amino acids used to build proteins. Such a change is a change to the protein's structure:
Primary which will alter 2nd and 3rd
The ____ structure of a protein consists of the SEQUENCE of amino acids joined together by polypeptide bonds.
The proposed cause of mad-cow disease and kuru in cannibals from New Guinea is a change in a brain protein. Disease victims appear to have a normal protein that should contain primarily coiled alpha helix changed conformation into a protein mainly made of pleated beta sheets. This would constitute a change in the:
The final shape of a protein is very important to its function. When proteins undergo an irreversible change in shape called _____ they _____ perform their usual functions.
Molecules such as cellulose formed from long chains of individual sugar molecules are called:
DNA is considered this type of compound (Lipid, Protein, Carbohydrate, or No Correct Response):
No correct response.
Molecules such as glycogen formed from long chains of individual sugar molecules, are called:
A complex carbohydrate from the following list is______(Sucrose, Fructose, Glucose, Glycogen).
Which of the following have nitrogenous bases correctly paired in DNA?
Which of the following is NOT true about DNA? (Has a double helix, Bases held together by hydrogen bonds, Bases are complementary to each other, Has a deoxyribose sugar, Contains adenine, guanine, cytosine, and uracil.
Contains adenine, guanine, cytosine, and uracil.
Similar to most liquids, water becomes most dense when it becomes solid (ice). True or False?
DNA and RNA heredity molecules code for the sequence of amino acids but not sugars or lipids. True or False?
Hemoglobin is a complex protein having a primary, secondary, tertiary, and quaternary structure. True or False?