Where are the visual pigments located in the rods and cones?
-inside membrane discs stacked in the outer segment
-inside a photosensitive nucleus
-in mitochondria located in the outer segment
-in the inner segment of photoreceptors
-sandwiched in the cell membrane of the photoreceptors
inside membrane discs stacked in the outer segment
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Answer the following statement(s) true (T) or false (F)
1. Changes in tongue placement for vowels do not alter the vowel quality. 2. If [u] is produced with a slightly lowered tongue position, the resulting vowel quality will approximate [o]. 3. Secondary stress is marked with a straight superscript line in front of the syllable. 4. The glottal stop can be noted as a sound substitution in children with speech sound disorders. 5. Normal aspiration is typically marked in utterances.
Which type of skin cancer is the most dangerous because it is highly metastatic and resistant to chemotherapy?
A. squamous cell carcinoma B. adenoma C. melanoma D. basal cell carcinoma
The sinusoids of the liver are lined by phagocytic Kupffer cells, also called ________ cells.
Fill in the blank(s) with the appropriate word(s).
Lateral plate mesoderm gives rise to most of the components of the cardiovascular system.
Answer the following statement true (T) or false (F)