I think the correct answer is B
Answer:
a) when cells are small the movement of food and waste can be efficiently handled by the cell membrane
Explanation:
Cells need to get their nutrients and waste in and out of their cell membrane every quickly. Cells are hard workers anyway! The other options also don't make much sense. The cell shape doesn't mean much to their function, and size doesn't impact shape. The cell's internal parts (mitochondria, vacuole, etc) don't support the cell membrane, they have their own functions to focus on. Cells don't work together in tissue but they can interact with each other when needed.
Answer:A star with a planet will move in its own small orbit in response to the planet's gravity. This leads to variations in the speed with which the star moves toward or away from Earth, i.e. the variations are in the radial velocity of the star with respect to Earth. The radial velocity can be deduced from the displacement in the parent star's spectral lines due to the Doppler effect
Explanation:
Answer:
The options
a. riboflavin
b. vitamin D
c. pantothenic acid
d. folic acid
The CORRECT ANSWER IS d.
d. Folic acid
Explanation:
Having a healthy baby means staying healthy. Getting sufficient folic acid each day — mostly before conception and at early pregnancy as it reduces risk of serious neural tube defects (partial development of the brain and spinal cord) to a very large extent.
Folic acid (or folate) is a B vitamin (B9) found majorly in dark green vegetables (broccoli and spinach), legumes(beans and peas) and enriched grains.
It is essential for all women of childbearing age to get sufficient folic acid (necessary for cell growth and development plus DNA formation too)— not just those who are trying to conceive.