A student wants to estimate the number of daisy plants in a 500 mfield. She uses a 1 m² quadrat to sample the field.
Figure 9 shows the results for the number of daisy plants counted in six areas
sampled with the quadrat
sample
number
number of
daisy plants
mean diameter of
daisy plants/cm
1
5
7
2
2
2
3
6
9
4
3
3
5
4
5
6
4
6
Figure 9
Calculate the mean number of daisy plants for the six samples.
(1)

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.

can you make it bigger i can't see it

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.