ati teas 7 science

Correct Answer: B

Rationale: The correct answer is B: Bronchitis. Bronchitis is the inflammation of the bronchi, leading to symptoms like cough and mucus production. Pneumonia (A) is an infection in the lungs, not specifically inflammation of the bronchi. Emphysema (C) is a chronic lung condition characterized by damaged air sacs in the lungs, not bronchial inflammation. Pleurisy (D) is inflammation of the lining of the lungs, not the bronchi. Therefore, based on the symptoms described, bronchitis is the most suitable term for inflammation of the bronchi.

Correct Answer: B

Rationale: The correct answer is B: It runs 3' to 5'. The antisense strand of DNA runs in the opposite direction to the sense strand. This is essential for complementary base pairing during transcription. The 3' to 5' direction allows RNA polymerase to synthesize RNA in the 5' to 3' direction, following the template of the antisense strand. Therefore, choice B is correct. Choices A and C are incorrect because the directionality of the antisense strand is opposite to 5' to 3' and it is used in transcription, not replication. Choice D is incorrect as DNA is stored in the cell nucleus in a double helix structure, not in a specific direction.

Correct Answer: C

Rationale: The correct answer is C: Testosterone. Testosterone is crucial for stimulating sperm production in males as it is the primary male sex hormone responsible for regulating the development of male reproductive tissues. It plays a key role in the production of sperm cells in the testes. Estrogen (A) and Progesterone (B) are female sex hormones and do not have a direct role in sperm production. Insulin (D) is a hormone that regulates blood sugar levels and is not involved in the process of sperm production.

Correct Answer: B

Rationale: The correct answer is B: Glomerulus. The glomerulus is a tuft of capillaries located within the nephron, specifically in the renal cortex. It is responsible for filtering blood and forming the initial filtrate in the process of urine formation. The other choices are incorrect because: A: Ureter - a tube that carries urine from the kidneys to the bladder. C: Nephron - the functional unit of the kidney that includes the glomerulus but is not solely responsible for filtering blood. D: Renal artery - carries oxygenated blood to the kidneys but is not directly involved in the filtration process.

Correct Answer: C

Rationale: Destructive interference occurs when two waves meet and their amplitudes are out of phase, leading to the waves cancelling each other out. This results in a reduction or complete elimination of the wave's intensity at that point. Refraction (A) is the bending of waves due to a change in medium. Diffraction (B) is the bending of waves around obstacles. Constructive interference (D) occurs when two waves align their amplitudes and reinforce each other.