Answer;
-DNA
Explanation;
-DNA stands for deoxyribonucleic acid. It's the genetic code that determines all the characteristics of a living thing.
-It contains the genetic instructions for the development and function of living things. These instructions are needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the activities in our bodies.
Answer: Slips, trips and falls are the potential hazards in school
Explanation:Clean and safe water must be provided at schools.
Answer:
You will need 10 mL of stock Tris, 15mL of stock NaCl and enough water to bring the total volume to 500 mL.
Explanation:
<u>The desired buffer contains:</u>
- Total volume of 500 mL
- Tris 30mM
- NaCl 150mM
<u>The stock solutions are:</u>
- 1.5M = 1500mM Tris
- 5M = 5000mM NaCl
We can use the formula C1V1=C2V2 to calculate the volume of each stock required to prepare the buffer.
<h2>
<u>Tris</u></h2>
- C1= 1500 mM
- V1=?
- C2= 30mM
- V2= 500 mL
1500 mM x V1 = 30mM x 500 mL
V1 = (30mM x 500 mL) / 1500 mM
V1 = 10 mL
<h2>
<u>NaCl</u></h2>
- C1= 5000 mM
- V1=?
- C2= 150 mM
- v2= 500 mL
5000 mM x V1 = 150mM x 500 mL
V1 = (150 mM x 500 mL) / 5000 mM
V1 = 15 mL
You will need 10 mL of stock Tris, 15mL of stock NaCl and enough water to bring the total volume to 500 mL.
Answer: C). Oxygen binding
Explanation: Hemoglobin is a protein present in the red blood cells that transports oxygen to the body cells and tissues. Hemoglobin has four subunits with four binding sites: one binding site on each protein subunit. Hemoglobin exists in two states: the tensed (T) state and the relaxed (R) state. The T state has low affinity for oxygen while the R state has high affinity for oxygen. The binding of oxygen to the T state triggers a conformational change in the protein and its transition to R state. The binding of oxygen to one binding site on hemoglobin increases the binding of oxygen to the remaining subunits, this phenomenon is known as cooperativity.
Answer:
Layers found in sedimentary rock could help scientists learn more about dinosaurs and other extinct species because each rock layer can be used to time date. The "oldest" being at the bottom and "newest" at the top. A scientist would also be able to tell which organisms lived together by looking at these layers
Explanation: