Answer:
Option 1, a charged end and a noncharged end
Explanation:
Complete question
If a small droplet of ordinary fat is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____
- a charged end and a noncharged end
- three fatty acid molecules, all pointing in different directions
- two fatty acid molecules pointing in different directions
- both a saturated fatty acid and an unsaturated fatty acid
- two charged ends
Solution
The structure of phospholipids consists of the following groups and molecules –
a) A glycerol molecule
b) Fatty acids (2 in numbers) – It is hydrophobic as it is uncharged and non polar in nature
c) Phosphate group (with alcohol) – It is hydrophilic as it is negatively charged and polar in nature.
When the phospholipids are placed in water, the molecule rearranges itself in a way that the hydrophobic head face inside and the hydrophilic head face outside thereby forming micelles.
Hence, option 1 is correct
Answer:
articulates with the temporal bone to form the temporomandibular joint
Explanation:
The mandible is the lower bone of the lower jaw of the human face which consists of the ramus and the front bones and teeth.
The mandible contains an articular structure for articulation called "condyle" which help in the formation of temporomandibular joints.
The temporomandibular joint is the joint formed between the lower jaw or mandible and the temporal bone of the skull. This allows the free movement of the lower jaw.
Thus, the selected option is the correct answer.
Answer:
During meiosis Prophase I, crossing over occurs which increases genetic diversity.
Explanation:
Answer:
The cell cycle is the cycle of which the cells grow and split. The cell cycle consists of two main phases, interphase and mitosis. In interphase, the cell grows and duplicates its DNA to prepare for mitosis. In the phase of mitosis, the cell splits its DNA into two nuclei and is split.
The answer to that question would be C. temperature
