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Twelfth Grade (Grade 12) Biology Questions

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Grade 12 DNA, RNA, and Genetics
The two identical halves of a chromosome after replication are
  1. kinetochores.
  2. spindle fibers.
  3. sister chromatids.
  4. centromeres.
Grade 12 Anatomical Organization
In anatomical position,                                                                                                                                       .
  1. the body is erect with the feet parallel and the arms lateral to the thoracic and abdominal regions, with the palms facing posteriorly
  2. the body is prone with the feet parallel and the arms lateral to the thoracic and abdominal regions, with the palms facing posteriorly
  3. the body is supine with the feet parallel and the arms lateral to the thoracic and abdominal regions, with the palms facing anteriorly
  4. the body is erect with the feet parallel and the arms lateral to the thoracic and abdominal regions, with the palms facing anteriorly
Grade 12 Anatomical Organization
What is the study of the functions and activities performed by the body structures?
  1. cytology
  2. physiology
  3. anatomy
  4. histology
Grade 12 Development and Reproduction
The process of producing new animals is reproduction.
  1. True
  2. False
Grade 12 Cell Structure and Function
Genetic material is contained within the                 of the cell.
  1. ribosomes
  2. cytoplasm
  3. nucleus
  4. nucleolus
Grade 12 Skin, Skeleton, and Muscles
Bones like the carpals are classified as                .
  1. long bones
  2. irregular bones
  3. short bones
  4. compact bones
Grade 12 Human Reproduction
The male gamete is sperm.
  1. True
  2. False
Grade 12 Macromolecules
Which organic molecule contains this type of functional group?
Structural Formula - Phosphate
  1. carbohydrate
  2. protein
  3. steroid
  4. nucleic acid
Grade 12 Nervous and Endocrine Systems
What is the control system for the nervous system?
  1. brain
  2. spinal cord
  3. brain and spinal cord
  4. brain and nerves
Grade 12 Macromolecules
What does an allosteric inhibitor do?
  1. It changes the shape of the enzyme.
  2. It increases the concentration of the products.
  3. It decreases the concentration of the inactive enzymes.
  4. It changes the shape of the substrate.
Grade 12 DNA, RNA, and Genetics
Endonucleases act on                .
  1. DNA
  2. RNA
  3. protein
  4. carbohydrates
Grade 12 Biochemical Pathways
What role does oxygen play in cellular respiration?
  1. It is reduced in glycolysis as glucose is oxidized.
  2. It provides electrons to the electron transport chain.
  3. It is required for the production of heat and light.
  4. It serves as the final electron acceptor during the electron transport chain.
Grade 12 Macromolecules
Large biological molecules are synthesized by removing
  1. carbon.
  2. oxygen.
  3. covalent bonds.
  4. peptides.
  5. water.
Grade 12 Biomes
Put the levels of organization in order from smallest (1) to largest (6)
__ 1 A. Individual
__ 2 B. Biome
__ 3 C. Population
__ 4 D. Biosphere
__ 5 E. Community
__ 6 F. Ecosystem
Grade 12 DNA, RNA, and Genetics
One characteristic Mendel examined was pea pod shape. If a pea plant that is heterozygous for inflated pods (Ii) is crossed with one that is homozygous for constricted pods (ii), what are the possible genotypic and phenotypic ratios of the offspring?
Table 2x2
  1. The genotypic ratio would be 1 Ii : 1 ii. The phenotypic ratio would be 1 inflated : 1 constricted.
  2. The genotypic ratio would be 1 II : 1 Ii : 2 ii. The phenotypic ratio would be 2 inflated : 2 constricted.
  3. The genotypic ratio would be 3 Ii : 1 Ii. The phenotypic ratio would be 4 constricted : 0 inflated.
  4. The genotypic ratio would be 1 II : 2 Ii : 1 ii. The phenotypic ratio would be 2 inflated : 2 constricted.
Grade 12 Macromolecules
Which is the macromolecule?
  1. oxygen
  2. bacteria
  3. protein
  4. fruit fly
Grade 12 Biomes
The ocean floor region is the                 .
  1. pelagic zone
  2. benthic zone
  3. mesopelagic zone
  4. epipelagic zone
Grade 12 DNA, RNA, and Genetics
If the universal adapter sequence is GTCATTGCTTGCAATGTT, which universal primer should be used for DNA sequencing?
  1. GTCATTGCTTGCAATGTT
  2. TTGTAACGTTCGTTACTG
  3. CAGTAACGAACGTTACAA
  4. AACATGCTGGTTAAGTCC
Grade 12 Cell Structure and Function
What organelle has ribosomes attached to protein synthesis?
  1. Endoplasmic Reticulum
  2. Rough Endoplasmic Reticulum
  3. Smooth Endoplasmic Reticulum
  4. None of the above
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