Answer:
1.5mL
Explanation:
This is 10mg/2mL, which simplifies to 5mg/1mL. To get 7.5mg, you need 1.5mL (multiple numerator and denominator by 1.5).
Answer:
Only the extracts from heat-killed cells treated with RNase are unable to transform nonvirulent bacteria into virulent bacteria.
Explanation:
The experiment by Avery, McCarty and MacLeod aimed to identify Griffith's "transforming principle," which is a principle that explains how transformation is a way of recombining, exchanging, or transferring genetic information between organisms or from one organism to another. For this, they used cell that were heat inactivated and purified the transforming principle of these cells.
The purified cells did not give positive results in the tests done by the scientists, but they presented transformants very similar to the DNA. However, Avery suspected that the result should be reinterpreted and that the molecule was not a DNA. This is because RNA degrading enzymes had no effect on the transforming principle and only RNase-treated heat-killed cell extracts are unable to transform non-virulent bacteria into virulent bacteria.
Answer:
The function of the following tissues are as follows:
Stratified squamous keratinized epithelium: These tissues cover the surface of the body and present at hair and skin. These tissues are keratinized to protect the surface of body from abrasion.
Simple squamous epithelium: This tissue contain the single layer of flat cells. These tissues are thin and has the ability to pass some selected molecules through the cells.
Hyaline cartilage: Hyaline cartilage contains large amount of collagen that provides support and flexibility to the tissues.
Bone: Bones are made up of calcified material, phosphates and various inorganic ions. Bones provide stiffness and supports the weight of muscles in our body.
Answer:
surface of an epithelial cell
Explanation:
