Answer:
threatened is the term when speacies have fewer members in the present than they did in the past.
~batmans wife dun dun dun.....
Answer:
THE DIAPHRAGM
Explanation:
The diaphragm is present beneath the stage and above the condenser in a microscope. It is that rotating disk that can be seen just underneath the stage. The function of the diaphragm is to control the amount of light once the specimen or slide is placed on the microscope.
The diaphragm consists of holes of different sizes. These holes majorly function in varying the amount and intensity of light on the slide or specimen.
Carbon dioxide enters the leaf through openings usually found on the underside of the leaf called the stomata. Carbon dioxide passes through the stomata through diffusion, a passive process.
Answer:
See the answer below
Explanation:
<u>In double-stranded DNA, the ratio of purine bases (Adenine and Guanine) and that of pyrimidine bases (Thymine and Cytosine) is 1:1 according to Chargaff's rule.</u> This means that the percentage of Adenine must be equal to that of Guanine while that of Thymine must also be equal to Cytosine.
However, in the case of the newly isolated viral strain, the amount of Adenine (25%) and Guanine (55%) vary while that of Thymine (10%) and Cytosine (20%) also vary. <em>This is in contrast to Chargaff's rule. Hence, the isolated virus is a single-stranded DNA virus instead of a double-stranded. </em>
Answer: Explanation:
Sickle hemoglobin differs from normal hemoglobin by a single amino acid: valine replaces glutamate at position 6 on the surface of the beta chain. Therefore the red blood cell bends differently giving it a sickle shape