Answer:
Bro you got the same class as me or some I got the same question a few weeks ago anyway the answer is B and C its pretty easy if you pay attention in class
Explanation:
Answer:
32%
Explanation:
According to Chargaff in his complementary base pairing rule, he stated that the proportion of purine and pyrimidine bases is equal to 100%
That is, A + T + G + C = 100%
Where A=T and G=C i.e the proportion of each base pair is equal.
Hence, if the Guanine content is 18%, it means the Cytosine content of that DNA molecule must also be 18%. Therefore:
18 + 18 + A + T = 100
A + T = 100 - 36
A + T = 64
If the sum proportion of Adenine and Thymine is 64% and each must contain equal proportions, A or T = 64/2 = 32
Hence, Adenine contains 32%, likewise Thymine.
Answer:
The two cycles of the matter are the carbon and nitrogen cycle. Both of them are biogeochemical cycles, it means that the chemicals spend a portion of the cycle in living things and non-living things. They are also common in that they both recycle nutrients that are essential to all organisms.
They are different in the manner that they cycle. Nitrogen is huge, 78% of the air around us is nitrogen. It cannot be used by plants or animals. Once the nitrogen is used by the plant and make its way to the animal, it can be released to decomposition.
Carbon has no requirement in processing by bacteria prior to plants and animals being able to use. Plants take carbon dioxide and make it sugar, animals eat the sugar. Some of it is released carbon dioxide that we exhale.
Answer:
b. by increasing the heart rate
c. by increasing the respiratory rate
Explanation:
Increased activity of skeletal muscles would require an increased supply of oxygen to these cells to sustain the muscle contraction. Muscle cells perform aerobic cellular respiration in the presence of oxygen and produce ATP molecules to be used during muscle contraction. Therefore, there is an increase in heart rate to pump sufficient blood to the skeletal muscles which in turn ensures enough supply of oxygen. Also, there will be an increase in the respiration rate to inhale the required oxygen.
Answer:
1) The smooth trait is dominant.
2) The F1 generation contains the genotype Bb. They will be crossed to form BB: Bb: bb (1: 2:1). The individuals will have the probability of 25% homozygous smooth, 50% heterozygous smooth, 25% wrinkled
B b
B BB Bb
b Bb bb
3) This cross would have shown that there would have been a possibility of 50% homozygous smooth and 50% heterozygous smooth.
B B
B BB BB
b Bb Bb
4) This cross would have resulted in offsprings having a chance of 50% wrinkled and 50% being heterozygous smooth.
B b
b Bb bb
b Bb bb
Explanation: