What passage carries food between the pharynx and the stomach?
Esophagus
The answer is producer because they are at the bottom of the food chain and are the starting point of new energy.
Answer:
Photosynthesis is the process by which plants make their own food in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and energy.
The process of photosynthesis has two types of reactions: light-dependent reactions and light-independent reactions.
The light-dependent reactions occur in the thylakoid membranes of chloroplasts in which plants use light energy to form ATP and the reduced electron carrier NADPH.
In this reaction, photosystem II (P700) absorbs lights energy and passed it to reaction center. this energy is then is transferred to photosystem I (P680), that pump an electron to a high energy level. The high-energy electron then travel to an electron transport chain and releases energy. this released energy pump H+ ions into the thylakoid interior from the stroma and build a gradient H+ ions move through gradient and they pass through ATP synthase resulting in the formation of ATP.
The higher energy electron as moves into an electron transport chain, the electron is passed to NADP+ to form NADPH.
Answer:
The correct statements are B, D and F
Explanation:
The following statements that correctly describes T tubules and their role in conducting action potentials in muscle cells are;
i) T tubules are infoldings of the plasma membrane that encircle the myofibrils and are in contact with the sarcoplasmic reticulum.
ii) T tubules carry action potentials into the interior of the muscle cell via voltage-gated Na+ and K+ channels.
iii) Without T tubules, the muscle cell would not be able to contract.
<h3><u>Answer;</u></h3>
Frequency of q would be increased
<h3><u>Explanation;</u></h3>
- The environment that has changed and the frequency of the<u> p allele </u>has gone down means that the frequency of q allele would go up, because the two frequencies are inversely proportional and their sum is constant.
- <em><u>According to Hardy Weinberg Principle, the gene or allele frequencies in a population will remain stable from generation to generation until acted on by an outside force.</u></em>
- <em><u>Allele frequencies in a population will not change from generation to generation, as far as factors of evolution such as natural selection, mutation, and migration are not taking place.</u></em>
