Answer: It is the overall name of DNA and RNA. They have Nucleotides.
The answer is: All nucleotides have a phosphorus atom that can be replaced with 32P.
DNA building blocks are nucleotides. Nucleotides contain a nitrogenous base, a five-carbon sugar, and, at least, one phosphate group. Exactly that phosphate group in the nucleotide has the phosphorus atom. Therefore, the phosphorus atom in the nucleotide can be replaced with radioactive phosphorus-32 (32P). This replacement has a wide use in labeling nucleic acids and thereby visualizing the target molecule.
Answer:
b. gene expression is regulated
Explanation:
Several mechanisms exist in the cell which regulate the turning on or turning off of certain genes.
These mechanisms are collectively referred to as gene regulation. The regulation can occur in several ways, including;
The correct option is b.
B.The oils in the lotion enter the skin cells with the help of carrier proteins.
C.The oils in the lotion enter the skin cells by means of facilitated diffusion.
D.The oils in the lotion enter the skin cells by means of simple diffusion.
The right answer is D.
The absorption of molecules at the level of the skin is carried out by passive diffusion for the molecules of low molecular weight (lower than 400 Da), the skin being covered with a lipoprotein film rich in water by its stratum corneum, rendering it little-permeable.
This absorption may be variable according to factors related to the skin such as stratum corneum's thickness, the state of hydration, the presence of cutaneous lesions or individual variations.
External factors may also modulate percutaneous absorption such as contact time, iontophoresis or the presence of specific adjuvants.
transform
B.
convergent
C.
divergent
D.
collision
Answer:
A transform plate boundary
These are all forms of movements, but by definition, if they slide past each other, it's transform!
Answer: transform is the correct answer!
Explanation: I got it correct on my quiz!
Answer:
The correct answer would be a. autotrophs.
Autotrophs, also called producers are the organisms which are able to produce complex organic compounds such as fats, proteins and carbohydrates from simpler substances present in the environment.
They are of two types based on their source of energy:
Photoautotrophs: These are the organisms which use sunlight as the source of energy in order to produce organic compounds.
For example, green plants synthesize their own food (glucose) from carbon dioxide with the help of sunlight and chlorophyll. Oxygen is released as the byproduct. The overall process is termed as photosynthesis (photo meaning photon or light energy).
Chemoautotrophs: They get energy from electron donor compounds such as sulfur, hydrogen sulfide et cetera.
The answer A. autotrophs