Chromosomes are found in the nucleusof animal and plant cells.
Answer:
They found evidence of an impact crater in Mexico
Explanation:
The K-Pg boundary is the boundary between the Cretaceous period and the Paleogene period, but also marking the end of the Mesozoic era and the beginning of the Cenozoic era. This boundary is dated to roughly 66 million years ago. The K-Pg boundary is characterized with a mass extinction. The dominant organisms on Earth all died out, including the dinosaurs, both terrestrial and aquatic, as well as the flying reptilians, with only the birds surviving from that super-family. The reason for the mass extinction has been an impact with an asteroid or a comet, that was very large and hit the Earth where the Yucatan Peninsula in modern day Mexico is located. The impact was devastating, with heat waves, tsunamis, earthquakes, triggering of the majority of the volcanoes, wildfires, all combined managed to devastate the environment, thus big portion of the species living in it as well. The lucky survivors were smaller organisms, and the mammals turned out to be the most successful in occupying the empty niches and have became the dominant organisms on the planet.
<span>Plants take nitrogen from the soil by absorbing through there roots as amino acids Most nitrogen obtained trerrestrial animals can be traced back to the eatinf of plants at some stage of the food chain. hope this helps!</span>
in redi's second experiment, the independent variable is presence of the gauze, or lack of it, while the dependent variable is appearance of maggots .
<h3>What are
independent variable and independent variable?</h3>
independent variable can be described as the variable that stands alone and whereby the other variables can not impact it when one is trying to measure. For instance someone's age is independent variable.
On the other hand ,dependent variable are variable that can not stand alone , hence in redi's second experiment, the independent variable is presence of the gauze, or lack of it, while the dependent variable is appearance of maggots .
Learn more about Redi's experiment at:
brainly.com/question/12702622
#SPJ1
Answer:
3. The ETC cannot establish a proton gradient to drive chemiosmotic production of ATP
Explanation:
Reduction of FAD+ and NAD+ during glycolysis and Kreb's cycle produces FADH2 and NADH respectively which in turn give their electrons to the molecular oxygen via electron transport chain (ETC). This electron transfer is accompanied by the pumping of protons towards the inter-membrane space resulting in the generation of an electrochemical gradient.
The energy of the electrochemical gradient is harnessed to drive ATP synthesis. The process is called chemiosmotic ATP synthesis. The mentioned insecticide would not allow the FADH2 and NADH to reduce oxygen and no electrochemical gradient is developed to drive the chemiosmotic production of ATP.
