Biology Semester 1 Final
This is your description.
- 1.A structure within a eukaryotic cell that carries out specific activities inside the cell is called a(n)
- A.
Membrane.
- B.
Cytoplasm.
- C.
Nucleus.
- D.
Organelle.
- 2.The size to which cells can grow is limited by their
- A.
Location.
- B.
Structure.
- C.
Function.
- D.
Surface area-to-volume ratio.
- 3.Which of the following does not require energy?
- A.
Diffusion
- B.
Active transport
- C.
Sodium-potassium pump
- D.
Endocytosis
- 4.Sharing of electrons in the outer energy levels of two atoms
- A.
Only occurs if both are atoms of the same element.
- B.
Makes both atoms more stable.
- C.
Is found only among carbon atoms.
- D.
Results in ion formation.
- 5.What would be the blood type of a person who inherited an A allele from one parent and an O allele from the other?
- A.
Type A
- B.
Type AB
- C.
Type O
- D.
Type B
- 6.Which of the following does not provide new genetic combinations?
- A.
Crossing-over
- B.
Cytokinesis
- C.
Independent assortment
- D.
Random fertilization
- 7.The major atmospheric by-product of photosynthesis is
- A.
Water
- B.
Carbon dioxide
- C.
Nitrogen
- D.
Oxygen
- 8.During DNA replication, a complementary strand of DNA is made from each original DNA strand. Thus, if a portion of the original strand is CCTAGCT, then the new strand will be
- A.
TTGCATG.
- B.
AAGTATC.
- C.
CCTAGCT.
- D.
GGATCGA.
- 9.Which of the following qualities do fingerprints and DNA fingerprints have in common?
- A.
Part of an extensive genome mapping effort
- B.
Ease of use in an investigation
- C.
Refer exclusively to traits of the human hand
- D.
Unique to an individual
- 10.The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called
- A.
Telophase.
- B.
Anaphase
- C.
Prophase
- D.
Metaphase
- 11.Long chains of amino acids are found in
- A.
Sugars.
- B.
Carbohydrates.
- C.
Lipids.
- D.
Proteins.
- 12.Acidic solutions have a pH that is
- A.
Less than 7.
- B.
A negative number.
- C.
More than 7.
- D.
Between 7 and 14.
- 13.Normal human males develop from fertilized eggs containing which of the following sex chromosome combinations?
- A.
OO
- B.
XX
- C.
XO
- D.
XY
- 14.The two types of nucleic acids are
- A.
DNA and RNA.
- B.
DNA and ATP.
- C.
Nucleotides and ATP.
- D.
RNA and ATP.
- 15.What do chloroplasts and mitochondria have in common?
- A.
Digestion of cell wastes
- B.
Presence in all cells
- C.
Production of ATP
- D.
Absorption of light energy
- 16.When crossing-over takes place, chromosomes
- A.
Exchange corresponding segments of DNA.
- B.
Mutate in the first division.
- C.
Decrease in number.
- D.
Produce new genes.
- 17.The diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human egg cell is
- A.
23
- B.
46
- C.
92
- D.
12.5
- 18.Which of the following shows the correct sequence of the cell cycle?
- A.
G1 -> S -> G2 -> mitosis -> cytokinesis
- B.
S -> G1 -> G2 -> mitosis -> cytokinesis
- C.
Mitosis -> G1 -> S -> G2 -> cytokinesis
- D.
Cytokinesis -> mitosis -> G1 -> S ->G2
- 19.Organisms that are not autotrophs
- A.
Get energy from sunlight.
- B.
Must consume other organisms to get energy.
- C.
Can survive without energy.
- D.
Get energy from inorganic molecules.
- 20.Which of the following is NOT a part of the carbon cycle?
- A.
Carbon dioxide in the atmosphere
- B.
Nitrogen-fixation by leguminous bacteria
- C.
The dark carbon-fixation process of photosynthesis
- D.
Exhalation of carbon dioxide from human lungs
- 21.Water is a polar molecule because
- A.
It has a charge.
- B.
It contains two hydrogen atoms for each oxygen atom.
- C.
Different parts of the molecule have slightly different charges.
- D.
It does not have a charge.
- 22.In a cell, proteins are made on the
- A.
Mitochondria.
- B.
Ribosomes.
- C.
Cell membrane.
- D.
Nucleus.
- 23.Sharing of electrons in the outer energy levels of two atoms
- A.
Only occurs if both are atoms of the same element.
- B.
Makes both atoms more stable.
- C.
Is found only among carbon atoms.
- D.
Results in ion formation.
- 24.The amount of guanine in an organism always equals the amount of
- A.
Cytosine.
- B.
Thymine.
- C.
Adenine.
- D.
Protein.
- 25.On Earth, under normal conditions, all matter is composed of
- A.
Atoms.
- B.
Cells.
- C.
Carbon.
- D.
Molecules.
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