1. Photosynthesis
2. Glucose
3 carbon dioxide
4.radiant engery
5. Carbon dioxide and water
6. Oxygen n chlorophyll
In plant cell sieve tubes has no nucleus when fully developed it helps in transportation of minerals and in animal cell the red blood cells has no nucleus when fully developed
D. Nucleic acids (RNA and DNA) are composed of a phosphate group , a pentose sugar (5 carbon sugar) and a nitrogen base (A,T,C,G).
Answer:
b. 457 Hz
Explanation:
Things including sound move like waves in the air. The distance between the crest of those waves is known as the wavelength, denoted by lambda (λ).
The wavelength of a sound can be calculated using the formula: λ = c/f
Where; λ= wavelength
c = speed of sound
f = frequency of sound
According to the question;
Wavelength of sound (λ) = 0.750m
Speed of sound (c) =342.5m/s
To calculate frequency (f), we make f the subject of the formula in λ = c/f
We initially cross multipy to have; c = λf
Divide both sides by λ to have; f = c/λ
We then calculate by inputting our values into the formula: f = c/λ
f = 342.5/0.750
f= 456.66
Approximately, the value of the frequency of the sound is 457Hz.
The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change. Specialized cells help absorbed materials cross the intestinal lining into the bloodstream.
