Answer:
Explanation:
Flipases are transportes that require energy for their functioning (ATP dependent) beause they move phospolipids across the lipid bilayer against the concentration gradient (from extracellular side to cytosolic side).
Floppases are ABC transporters, opposite than flippases (move phospholipids from the cytosolic side).
Scrablases are bidirectional transporters, responsible for asymmetry formation. It also enables exposure of phosphatidylserineon the outer leaflet when it is necessary.
Answer:
C
Explanation:
Hydrophobic interactions are the result of strong attractions between nonpolar regions and are crucial in biological phenomenon such as protein folding and cell membrane structure. The correct option is D.
Hydrophobic interactions often occur between nonpolar molecules or groups. The correct statement among those provided is D: hydrophobic interactions are the result of strong attractions between nonpolar regions.
These interactions do not require the presence of surrounding water molecules, nor do they result from maximizing contact with water. Instead, nonpolar molecules or groups tend to gather together, or aggregate, to minimize their exposure to water or any other polar substances.
This is because there is a natural repulsion between polar and nonpolar substances. Thus, hydrophobic interactions are critical for the folding and stability of proteins, cell membrane structure, and many other biological phenomena. The correct option is D.
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Answer:
Pollination is the transfer of pollen from the male part of the flower, known as the anther, to the female part of the flower, known as the stigma. This can occur through a variety of methods, including wind, water, or through the action of animals. Once the pollen lands on the stigma, it begins to grow a tube down through the style of the flower towards the ovary.
Fertilization occurs when the pollen tube reaches the ovary and fertilizes the egg cell inside the ovule. The fertilized egg cell then develops into a seed, while the ovary develops into a fruit. The process of fertilization requires the transfer of genetic information from the male parent to the female parent, which occurs when the sperm cell from the pollen combines with the egg cell in the ovule.
After fertilization, the ovule develops into a seed, which contains the genetic material necessary for the growth and development of a new plant. The fruit, which develops from the ovary, provides protection for the seeds and helps to disperse them away from the parent plant. This process of pollination and fertilization is essential for the reproduction of flowering plants, and allows for genetic diversity and evolution within plant populations.
B. produce NADPH
C. reduce carbon dioxide into glucose
D. None of these are correct
Answer:
C
Explanation:
The energy source is ATP, and the reducing agent is NADPH, which adds high-energy electrons to produce sugar.
a prokaryotic cell that can make its own food
an aerobic bacterium
an anaerobic bacterium
Endosymbiotic theory or symbiogenesis is the evolutionary theory. A eukaryotic cell that can make its food will arise from a cyanobacterium. Thus, option a is correct.
Endosymbiotic theory is the evolutionary theory of the origin of the eukaryotic organism from a prokaryote cell. It was formulated based on the mitochondrial DNA and the chloroplast organelle in the plant.
According to the symbiogenesis theory chloroplast and mitochondria were once free-living that got phagocytized by another cell. So, if a cyanobacterium is engulfed then the eukaryotic cell will have the power to produce its own food.
Therefore, the eukaryotic autotroph will be produced from the cyanobacterium.
Learn more about endosymbiotic theory here:
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Answer:
A
Explanation: a eukaryotic cell that can make its own food