Plant leaves appear green because they ____ light spectrum.
a. Scatter all colors except the green portion of the visible.
b. Scatter the green portion of the visible.
c. Absorb the green portion of the visible.
d. Scatter the green portion of the ultraviolet.
The continuous part of the plasma membrane is the:
b. Phospholipid bilayer.
Which of the following is true of plants?
a. They can create their own sugars using photosynthesis.
b. They can create their own sugars using fermentation.
c. They can create their own sugars using respiration.
d. They cannot create their own sugars using photosynthesis.
The outer living limit of the cell is called:
a. The cell wall.
b. The edge.
c. The plastid.
d. The plasma membrane.
The person who first used the term cell to describe a unit of life was:
a. A. Van Leeuwenhoek.
b. R. Watson.
c. R. Downy.
d. R. Hooke.
Water is an important solvent of life because:
a. It forms covalent bonds.
b. It is ionic.
c. It has cohesive properties.
d. It forms hydrogen bonds.
Cancer is a disease caused by mutations. Yet in most instances if one of your parents tragically died from cancer, this does not put you at greater risk than a person whose parents do not develop cancer. How can cancer be caused by mutations and yet not be heritable?
a. Mutations caused by environmental agents such as tobacco smoke cannot be inherited.
b. The mutations that cause cancer are special and cannot be passed on regardless of what type of cell they occur in.
c. Most cancers arise from mutations in germ line cells.
d. Most cancers arise from mutations in somatic cells.
Which of the following is the correct order of the three stages of aerobic respiration?
a. Glycolysis, Krebs cycle, electron transport.
b. Electron transport, Krebs cycle, glycolysis.
c. Krebs cycle, glycolysis, electron transport.
d. Krebs cycle, electron transport, glycolysis.
What two colors of light drive most of photosynthesis?
a. Red and green.
b. Blue and green.
c. Red and blue.
d. Green and yellow.
What is the term for an observable trait of an organism?
A single cell begins meiosis. How many cells will there be after meiosis I, to begin meiosis II?
If a female is a carrier to the hemophilia gene, has a child with a male who does not have hemophilia, which prediction is correct?
a. All of the sons and none of the daughters will have hemophilia.
b. All of the daughters and none of the sons will have hemophilia.
c. Half of the sons and half of the daughters will have hemophilia.
d. Half of the sons and none of the daughters will have hemophilia.
Which of the following is an ex of an eukaryotic cell?
a. An archea.
b. A virus.
c. A bacteria.
d. A plant cell.
The products of meiosis are:
a. Four genetically different, haploid cells.
b. Two genetically identical, diploid cells.
c. Four genetically identical, haploid cells.
d. Four genetically identical, diploid cells.
Which of the following is an ex of potential energy?
a. A car driving down the road.
b. A bird flying in the air.
c. A man running down the street.
d. A loaded gun.
Which of the following have the most entropy?
c. An ice cube.
d. Liquid Water.
Which of the following have the most entropy?
b. Carbon atoms.
c. A cell.
Which below best describes a difference between a chromosome and a gene?
a. A chromosome and a gene are identical.
b. A gene is one section of a chromosome, and a chromosome may carry many genes.
c. A gene is larger than a chromosome.
d. A chromosome contains the entire DNA of a human; while a gene is a single portion of that DNA.
What does oxygen allow humans to do?
b. Produce food.
c. Digest food.
d. Produce ATP from food.
You are sitting by a lake. You drop a leaf on the lake and notice that it floats on the top of the water. Which of the following properties of water could help describe what you observed?
a. It has a strong surface tension.
b. It can dissolve large quantities of solute.
c. It has a high specific heat.
d. It is hydrophobic.
Which of the following is an ex of homeostasis? An organism that can:
a. Assimilate and use energy.
c. Evolve from other living things.
d. Maintain a relatively constant internal environment.
Which types of proteins are involved in nutrient transport and why?
a. Integral proteins because they span the membrane, thereby carrying nutrients across the membrane.
b. Peripheral proteins because they are smaller and can travel across the membrane, thereby carrying nutrients across the membrane.
c. Integral proteins because they are smaller and can travel across the membrane, thereby carrying nutrients across the membrane.
d. Peripheral proteins because they span the membrane, thereby carrying nutrients across the membrane.
Sucrose and lactose are part of _______ in the carbohydrates family.
What happens in telophase I?
a. Cytokinesis produces four haploid gametes.
b. Sister chromatids separate but there is no cytoplasmic division.
c. Cytokinesis produces two cells that will each go through meiosis II.
d. Homologous chromosomes separate but there is no cytoplasmic division.
Glycogen is a polysaccharide used for energy storage by:
You are a forensic scientist and have been asked to identify a white, unlabeled powder recovered from the scene of a crime. As a first step, you're interested in learning if the compound is polar or non polar. What should you do and how should you interpret your findings?
a. Try to dissolve the powder in water; if it fails to dissolve it's a polar compound.
b. Try to dissolve the powder in water: if it fails to dissolve it's a non polar compound.
c. Try to ignite the powder; if it burns it's a polar compound.
d. Try to dissolve the powder in oil; if it dissolves it's a polar compound.
Which condition is seen more in males than in females?
a. Sickle cell anemia.
b. Turner Syndrome.
c. Down Syndrome.
d. Duchenne Muscular Dystrophy.
Chitin is a complex carbohydrate that forms the external skeleton of the _________.
What is used to cut DNA in generating recombinant DNA?
a. Restriction enzymes.
How many chromosomes are in a human gamete?