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FREE QUIZ BOWL AND STUDY GAMES ABOUT SB - LIFE
SCIENCE EXAM QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -159 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Short Answer - How many permanent teeth does a typical adult human have?
Answer:
32 Question 2: Multiple Choice - In which of the following stages in the life of an average dividing
cell would it spend most of its time:
W). mitosis X). interphase Y). cytokinesis Z). karyokinesis
Answer:
X). INTERPHASE
Question 3: Multiple Choice - Which of the following is NOT a structure found in human cells: W). mitochondrion X). cell wall Y). lysosome Z). peroxisome
Answer:
X). CELL WALL
Question 4: Multiple Choice- Which of the following BEST describes the chemical makeup of a
human chromosome:
W). 100% DNA
X). about 99% DNA and 1% protein Y). about 50% DNA and 50% protein Z). about 1% DNA and 99% protein
Answer:
Y). ABOUT 50% DNA AND 50% PROTEIN
Question 5: Short Answer - What is the light-yellow fluid that makes up the fluid portion of normal circulating human blood?
Answer:
PLASMA (DO NOT ACCEPT SERUM)
Question 6: Short Answer - From what embryonic germ layer are skeletal bones primarily derived?
Answer:
MESODERM
Question 7: Short Answer - What term is generally used for biological catalysts?
Answer:
ENZYMES
Question 8: Short Answer - The human body is most commonly described as having what type of symmetry?
Answer:
BILATERAL
Question 9: Short Answer - What staining method is used to generally divide bacteria into two groups?
Answer:
GRAM STAIN
Question 10: Short Answer - What is generally considered the basic unit of life?
Answer:
THE CELL
Question 11: Short Answer - What glands of the human body are most responsible for producing what is sometimes called the stress hormone cortisol?
Answer:
ADRENALS (ACCEPT: ADRENAL CORTEX)
Question 12: MC - What is NOT true about ribosomes: W). they help translate mRNA into protein X). theya re too small to be seen with a compound light microscope Y).they are about 20 nanometers in diameters Z).bacterial & eukaryotic ribosomes are identical in shape
Answer:
Z). BACTERIAL AND EUKARYOTIC RIBOSOMES ARE IDENTICAL IN SHAPE AND SIZE
Question 13: Short Answer - What organelle with attached ribosomes in most directly responsible for the translation of proteins destined to be transported out of the cell?
Answer:
ENDOPLASMIC RETICULUM (ACCEPT: ER OR RER OR ROUGH ER, OR ROUGH ENDOPLASMIC
RETICULUM) (DO NOT ACCEPT: SER OR SMOOTH ER OR SMOOTH ENDOPLASMIC
RETICULUM)
Question 14: Short Answer - Name all of the following 4 organisms that are bivalves: squid; clams; snails; mussels
Answer:
CLAMS; MUSSELS
Question 15: Multiple Choice - Which of the following terms is MOST commonly used to refer to
the copying of DNA during the cell cycle:
W). duplication X). replication Y). translation Z). complementation
Answer:
X). REPLICATION
Question 16: Short Answer - What anatomical structures in humans function by connecting muscles to bones?
Answer:
TENDONS
Question 17: Short Answer - In what organelle do parenchymal (read as: PAR-en-KYM-al) cells store most of a plant's cellular fluid?
Answer:
VACUOLE
Question 18: Short Answer - Name all of the following 4 choices of eukaryotic sub-cellular structures that do NOT have their own specific membrane: chloroplast; lysosome; centriole; golgi
Answer:
CENTRIOLE
Question 19: Multiple Choice - Which of the following terms do biologists most often use to
describe animals that do not move by their own design or effort:
W). saprophytic X). instar Y). motile Z). sessile
Answer:
Z). SESSILE
Question 20: Multiple Choice - Which of the following is most directly responsible for the
exchange of genes during meiosis:
W). crossing over X). kinetochores division Y). cytokinesis Z). alleles
Answer:
W). CROSSING OVER
Question 21: MC- which is a set of reactions that do NOT require light & where CO2 is used to make 3 carbon sugar phosphate molecules that are late used to make 6 carbon sugars: W). photosystem-2 X). Calvin cycle Y). citric acid cycle Z). electron transport
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