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Twelfth Grade (Grade 12) Biology Questions

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Grade 12 Skin, Skeleton, and Muscles
This muscle runs from the shoulder girdle and ribs to the proximal humerus. It is responsible for adduction, flexion, and medial rotation of the arm.
  1. biceps brachii
  2. pectoralis major
  3. external oblique
  4. triceps brachii
Grade 12 Skin, Skeleton, and Muscles
These muscles originate at the ribs and insert into the ilium. They act to flex, laterally flex, and rotate at the hips.
  1. iliopsoas
  2. latissimus dorsi
  3. obliques
  4. pectoralis major
Grade 12 Skin, Skeleton, and Muscles
This muscle group originates and inserts into the spinous processes of the vertebrae.
  1. latissimus dorsi
  2. trapezius
  3. hamstring
  4. erector spinae
Grade 12 Skin, Skeleton, and Muscles
This muscle originates at the pubis and inserts into the costal cartilages and xiphoid process.
  1. rectus abdominis
  2. transversus abdominis
  3. latissimus dorsi
  4. intercostals
Grade 12 Skin, Skeleton, and Muscles
This muscle dorsiflexes and inverts the foot.
  1. gastrocnemius
  2. peroneus
  3. soleus
  4. tibialis anterior
Grade 12 Skin, Skeleton, and Muscles
This muscle flexes the proximal interphalangeal joints.
  1. brachioradialis
  2. flexor carpi radialis
  3. flexor carpi ulnaris
  4. flexor digitorum
Grade 12 Skin, Skeleton, and Muscles
This muscle originates at the sternum and clavicle and inserts into the mastoid process of the temporal lobe.
  1. temporalis
  2. buccinator
  3. platysma
  4. sternocleidomastoid
Grade 12 Skin, Skeleton, and Muscles
What type of muscle raises and lowers the scrotum?
  1. rough
  2. smooth
  3. cardiac
  4. skeletal
Grade 12 Skin, Skeleton, and Muscles
What is the synovial joint that provides a slipping motion, such as in the carpals?
  1. biaxial
  2. synarthrotic
  3. uniaxial
  4. multiaxial
Grade 12 Botany
Cold acclimation is the process by which a plant stops active growth and develops the capacity to survive
  1. hot temperatures.
  2. shade.
  3. drought.
  4. freezing temperatures.
Grade 12 Skin, Skeleton, and Muscles
What is the anterior coxal bone?
  1. ilium
  2. ischium
  3. pubis
  4. sacrum
Grade 12 Skin, Skeleton, and Muscles
This is the inner ankle bone.
  1. medial syloid
  2. medial condyle
  3. medial malleolus
  4. lateral malleolus
Grade 12 Skin, Skeleton, and Muscles
This is a common site of fracture for people of older age.
  1. ilium
  2. neck of femur
  3. head of femur
  4. tibia
Grade 12 Skin, Skeleton, and Muscles
This bone forms part of the cranial floor and houses the pituitary gland.
  1. sphenoid
  2. ethmoid
  3. maxilla
  4. zygomatic
Grade 12 Botany
Which clade includes the horsetails and the ferns?
  1. streptophytes
  2. euphyllophytes
  3. monilophytes
  4. bryophytes
Grade 12 DNA, RNA, and Genetics
A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occurs and causes the sythesis of the segment shown. Which is the new peptide chain when the new DNA segment is translated?
  1. methionine, leucine, histidine, aspartate, glycine
  2. Methionine, proline, histidine, aspartate, glycine
  3. methionine, phenylalanine, histidine, aspartate, glycine
  4. methionine, serine, histidine, aspartate, glycine
Grade 12 Anatomy and Physiology
The presence of human chorionic gonadotropin (HCG) in a woman’s urine indicates that she                               .
  1. has just ovulated.
  2. is pregnant.
  3. has decreased estrogen levels.
  4. is about to menstruate.
Grade 12 Anatomy and Physiology
The function of structures W and Y is to
  1. produce fluids that make up semen.
  2. produce testosterone.
  3. mature and store sperm.
  4. deliver the sperm to the female.
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