B, a nucleus. Nuclei are membrane-bound organelles inside eukaryotic organisms. Eukaryotes are protists, fungi, plants, and animal cells. A bacteria is not a eukaryote, it is a prokaryote, so it does not have the membrane-bound structure of the nucleus.
Be careful, though, bacteria still have DNA. It is simply located in the center of the cell and is not encased in a membrane.
Answer:
P wave and R wave
Atrial contraction = P wave
Ventricular contraction = R wave
Explanation:
The behavior of the frog heart from force recording can be classified into ; P wave and R wave.
utilizing the ECG ( Electrocardiogram) data the aspect of the force recording that is due to atrial contractions is the ; P wave while the force recording that is due to ventricular contractions is the ; R wave the ventricular contractions is also known as QRS
ECG is used to record the electrical activities of a heart at rest
Answer:
Matter movement: Carbon dioxide and water enter into the cell. Matter change: Carbon dioxide and water react resulting in glucose and oxygen. Energy change: The light energy of the sun is converted into chemical energy that is stored in the high energy C-C and C-H bonds of glucose.
Explanation:hope it helps :)
A reaction in which heat energy<span> is absorbed is said to be endothermic. You </span>can<span> show this on simple </span>energy <span>diagrams. For an exothermic change: Notice that in an exothermic change, the </span>products<span> have a </span>lower energy than<span> the </span>reactants<span>.</span>
The correct answer is (b) arctic fox
The arctic fox shows two color of fur depending upon the season. During summer and spring season the fox has dark colored coat .It does so to match the color of the brown dirt in the surrounding. In winter's the arctic fox turns its fur to white to match the color of the snow in the surrounding. This phenomenon is known as " camouflage". Animals have developed this adaptation to protect itself from being killed by other animals by changing the color of the fur according to the color of the surrounding.
