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Twelfth Grade (Grade 12) Science Questions

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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 Cell Structure and Function
This organelle has no ribosomes function and has lipid synthesis.
  1. Endoplasmic Reticulum
  2. Rough Endoplasmic Reticulum
  3. Smooth Endoplasmic Reticulum
  4. None of the above
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 Physics
How are valence electrons represented in Lewis dot structures?
  1. As lines connecting atoms
  2. As dots surrounding the atomic symbol
  3. As circles within the electron cloud
  4. As arrows pointing towards the nucleus
Grade 12 Physics
What is the significance of groups in the periodic table?
  1. Elements in the same group have similar atomic mass.
  2. Elements in the same group have the same number of valence electrons.
  3. Elements in the same group have the same number of protons.
  4. Elements in the same group have the same atomic size.
Grade 12 Physics
In a digital system, a wave pulse represents the transition between which two states?
  1. High and low voltage
  2. Positive and negative voltage
  3. Constant voltage and no voltage
  4. Stable and unstable voltage
Grade 12 Physics
Which part of a computer chip controls the timing and synchronization of digitized signals?
  1. Data bus
  2. Clock signal
  3. Transistor array
  4. Memory controller
Grade 12 Physics
In binary, the digit '1' typically represents which state in a digital signal?
  1. Low voltage
  2. High voltage
  3. No voltage
  4. Negative voltage
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