Answer:
Every particle attracts every
other particle in the universe
using a force that is directly
proportional to the product
of their masses and inversely
proportional to the square of
the distance between them. (theory)
Human beings walk on the
ground rather than floating
in the air. (law)
Human beings walk on the
ground rather than floating
in the air because of Earth's
gravitational force. (fact)
Explanation:
theory: Us humans always come with theories so that it will make it a lot easier for us to understand the whole picture. So that's why the first part is a theory because we have never seen every particle attract an other particle. but because of the modern technology we are able to make a trustworthy theory.
Fact: We know that humans walk on the ground because of the earth's gravitational force.
law: This law mathematically describes how two different bodies in the universe interact with each other.
I hope this is ok :)
Flowering plants produce male and female cells. The male cells are called pollen and the female cells are called ova. When a flowering plant is fertilized, it produces offspring in the form of seeds. However, not all plants reproduce flowers. Simpler plants, like mosses, lack these specialized structures.
Answer:
B
Explanation:
Environmental factors don't determine all of your genetics traits but they do influence them.
Answer:
Examples of environmental factors that may alter salivary peroxidase include periodontitis, oral hygiene, presence of heavy metal ions, bacteria (e.g., <em>Streptococcus gordonii</em>), anaerobic conditions, temperature, pH, etc.
Explanation:
Peroxidase is an enzyme found in all aerobic cells that act to convert toxic hydrogen peroxide (H2O2) into dioxygen (O2) and water (H2O). This enzyme plays an important non-specific defensive role against proliferating micro-organisms that cause periodontal diseases such as periodontitis, which is a serious inflammatory disease affecting the tissues around the teeth. The most common environmental factors influencing the development of periodontitis include oral hygiene, smoking and age. In this regard, it has recently been shown that there is a positive correlation between salivary peroxidase activity and periodontal health, especially in non-smoker individuals. In consequence, it is expected that smoker individuals are more prone to suffer periodontal diseases by reduction of the salivary peroxidase levels.
Answer:
b. cis test
Explanation:
A test that is used to determine if the mutation associated with a given phenotype is due to mutations in two different genes or due to different alleles of the same gene is called a complementation test.
A complementation test is also called as a cis-trans test.
If the mutations in a complementation test are located on the same position then the genes are termed as being on the cis position otherwise on the trans-position.
A cis test, that is if the genes are located on the same position serves as a control for the complementation test.
