Answer:
The options B, C, D and E are correct
B. More of organisms in the phylum platyhelminthes are parasitic in nature.
C. Platyhelminthes are acoelomates and therefore lacks coelom.
D. Phylum Platyhelminthes organisms are multicellular, asymmetrical, lack a digestive tract and are advanced diploblastic.
E. Most Platyhelminthes are hermaphrodites possessing the male and female sex organs.
Option A is wrong because:
A. Leeches are in the Phylum Annelida and are segmented in nature.
They are advanced
As a result of this characteristic, they are able to reproduce asexually and sexually
Answer:A
Explanation:
Answer:
The reason for the offspring to present these genotypes is that during the formation of the gametes, the alleles separate and are inherited independently, therefore they can generate several different phenotypic combinations.
Explanation:
In order for an offspring to present very different phenotypes, as shown in the question above, it is necessary that the two red griffins with blue eyes that were crossed are heterozygous. Thus it will be possible for the offspring to present a wide variety of phenotype, according to Mendel's second law.
Mendel's second law is called the Law of segregation. This law explains that the alleles (which determine the characteristics of individuals) are separated in the formation of gametes and inherited by the offspring of a cross independently, and can generate different combinations of phenotypes, when the parents of a cross are heterozygous.
Answer:
red-hot iron bar
Explanation:
An iceberg could even contain more heat energy than a cup of coffee or a red-hot iron bar. That's because its bigger and contains so many more molecules, each of which has some heat energy. The coffee and the iron bar are hotter (have a higher temperature), but the iceberg holds more heat because it's bigger.
Answer:
Pepsin is an enzyme present in the gastric juice which digests the proteins of the food material.
These pepsin are synthesized as pre-proenzymes or inactive forms by chief cells in the gastric mucosa of the stomach. These inactive forms consist of a signal peptide, activation peptide and active enzyme which gets activated in the acidic environment of stomach by Hydrochloric acid.
The stomach secrets this enzyme in an inactive form to prevent the digestion of protective proteins present in the lining of the digestive tract.
Answer: Variolation
Explanation:
Variolation can be defined as the condition in which the inocolutaion of the individuals with the infectious materials, scabs or pulses from the smallpox victim.
This was introduced by the route of nasal passage or injected intravenously. The infection that developed because of this was less than normal and it provided protein against more serious disease.
Hence, the correct answer is Variolation.
b. The four nitrogenous bases found in it are A, T, C and G.
c. The two strands are parallel.
d. The two strands are stabilized by hydrogen bonds and base stacking interactions.
Answer:
Which of the following is FALSE regarding the DNA double helix?
The two strands are parallel.
Explanation:
DNA strands are anti-parallel to one another which gives room for their complimentary factor to come in play.
The false statement is that the two strands of the DNA double helix are parallel. They are actually antiparallel, running in opposite directions.
The false statement regarding the DNA double helix is c. The two strands are parallel.
The correct statement is that the two strands of the DNA double helix are antiparallel. This means that one strand runs in the 5' to 3' direction, while the other strand runs in the 3' to 5' direction.
Complementary base pairing, involving the nitrogenous bases A, T, C, and G, is an essential characteristic of the DNA double helix. The two strands are held together by hydrogen bonds between complementary base pairs, as well as by base stacking interactions that result from the hydrophobic interactions between adjacent base pairs.
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