Answer:
Alkanes
Explanation:
There are 3 classes of hydrocarbons based on the on the presence of single, double and triple bond present in them. These classes are mentioned as under:
1) alkanes
2)alkenes
3)alkynes
Alkanes are the hydrocarbons which are compounds of carbon and hydrogen bonded by single bond. Their general formula is CnH2n+2 that means if in an alkane n = 3 then it will have 3 carbon and 2n+2 = 8 hydrogen molecules.
Alkenes are the hydrocarbons which are compounds of carbon and hydrogen bonded by double bond. Their general formula is CnH2n.
Alkynes are the hydrocarbons which are compounds of carbon and hydrogen bonded by triple bond. Their general formula is CnH2n-2.
As explained above, the given hydrocarbon is an alkane because its chemical formula is C3H8 which satisfies the condition for formula CnH2n+2 which is valid for alkanes.
Why does the ratio of surface area to volume increase with the decrease in cell size?
A. A larger cell has more surface area than volume.
B. A smaller cell has more surface area than volume.
C. A smaller cell has more volume than surface area.
D. A smaller cell has an equal ratio of surface area to volume
Answer:
B
Explanation:
This is a question more about understanding ratios than understanding cells.
A surface area to volume ratio (S/V) in a size-decreasing cell would increase due to a more significant loss in volume that in surface area. In reality, both decrease (surface area AND volume), but as we are talking about a ratio, this one would go up due to a more dramatic decrease in volume.
for you to be scientifically
literate
Answer:
C. Explain to your reader thorougly
Explanation:
scientific litierate
b. seed.
c. cone.
d. flower.
The answer is B- Seed.
Answer:
The correct answer would be Pp.
The genotype of one parent is PP. Thus, it will produce only one type of allele, that is, P.
Similarly, the genotype of another parent is pp. Thus, it will produce only one type of gamete, that is, p.
The cross would produce offspring with only one type of genotype, that is, heterozygous Pp.
The phenotype of all the offspring will be purple as it is a dominant trait.
When we cross PP x pp we obtain:
Pp + Pp + Pp + Pp (we obtain four identical genotype).
Pp (heterozygote flower) is the Only genotype when we cross two different homozygotes.
The phenotype will be the purple flower since it is the dominant genotype.
b.Fossil fuels are a valuable energy source for the biosphere.
c.The continental crust allowed the evolution of life on land.
d.The crust recycles the organic materials in sedimentary rock.
Answer:
The answer is A
Explanation: