How can scientists use the fossil record in sedimentary rock to learn which species lived at different times in Earth's history?

Answers

Answer 1
Answer: The higher to the ground surface the rock is, the 'newer' it is and so by looking at one piece of sedimentary rock you will be able to see which animals were present when in that certain area, you can then compare this to sedimentary rock somewhere else.

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1. Why were populations able to get so big? What happened that allowed this to happen?2. What do you think will happen if the populations of humans continued to increase

3. What could happen that could limit the population or cause it to decrease ( Stop growing )

Answers

Answer:

1. reproduction

2. we could run out of food as not enough is produced fast enough

3. lack of food, women and men who are infertile or diseases which can kill people

Which of the following does not occur during interphase?A. Replication
B. Translation
C. Cytokinesis
D. An increase in the number of mitochondria

Answers

Final answer:

Cytokinesis does not occur during interphase. Instead, it happens during the mitosis phase. Interphase includes processes like DNA Replication, Translation, and an increase in mitochondria.  Therefore, the correct answer would be C

Explanation:

The process that does not occur during interphase is option C, Cytokinesis. In biology, interphase is a stage of the cell cycle, during which preparation for cell division occurs. It includes several processes, such as Replication of DNA, Translation, and an increase in the number of mitochondria. However, Cytokinesis, which is the actual division of the cell into two daughter cells, happens during the mitosis phase, not interphase.

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Final answer:

Cytokinesis is the process that does not occur during interphase. Interphase is the part of the cell cycle where the cell grows, DNA is replicated, and preparations for cell division occur. Cytokinesis, the Division of the cell's cytoplasm, happens during the M phase, not interphase.

Explanation:

Among the options mentioned, the process that does not occur during interphase is C. Cytokinesis. Interphase is a part of the cell cycle in which the cell grows, DNA is replicated, and the cell prepares for division. This period consists of the G1 (Gap 1), S (Synthesis), and G2 (Gap 2) phases.

Cytokinesis, however, occurs during the M (Mitotic) phase, not during interphase. This process involves the division of the cell's cytoplasm, creating two separate cells. On the contrary, replication (the synthesis of identical DNA molecules), translation (protein synthesis from RNA), and an increase in the number of mitochondria (cellular growth) are processes that indeed take place during interphase.

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PLEASE HELP!!!!!!The study of Escherichia coli (E. coli) led researchers to new experimental designs for studying operons. Which experimental design did the scientists use?
A. Use a microscope to observe cell division to determine the structure of operons.
B. Test the response of E. coli to a variety of chemicals to determine the number of operons that are present.
C. Insert the operons from one organism into another to determine the mechanism of operon expression.
D. Read the genome sequence to determine the quantity and organization of operons.

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The study of Escherichia coli (E. coli) led researchers to new experimental designs for studying operons. The experimental design that the scientist should use it to (B) Test the response of E. coli to a variety of chemicals to determine the number of operons that are present.

The experimental design that scientists use is to insert the operons from one organism into another to determine the mechanism of operon expression. Thus, the correct option is C.

What is E.Coli?

E.Coli may be defined as a bacterial species that typically live in the intestines of both healthy people and animals. It is one of the organisms most frequently used in the technique of genetic modification.

Scientists used the experimental design which includes the role of E.Coli in inserting the operon from one organism to the other via the machinery of E.Coli and estimates the expression of the operon in that organism.

Therefore, it is well described above.

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Which cell structure directs the cell activities

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The nucleus -- it is the powerhouse of the cell!

Answer:

meb is right  give him stars plz im saying this so no one can give you the worng Answer

An introduction on Evolution in animals (fish and rat specially) also including homologous and analogous!

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This document has some of the terms you needed, we did this topic in Bio last year. There is also lots of good sources online if you need further info! :D

Which object in space emits light because it releases energy produced by nuclear fusion?

Answers


My answer to this would be the sun

Final answer:

The Sun is the object in space that emits light due to the energy released from nuclear fusion in its core. This process involves the fusion of hydrogen nuclei to form helium, releasing energy as photons, neutrinos, and gamma rays. The released energy, particularly the photons, is therefore responsible for the Sun's light.

Explanation:

The object in space that emits light because it releases energy produced by nuclear fusion is the Sun. This nuclear fusion takes place in the Sun’s core and involves the combination of two hydrogen nuclei to form helium, releasing energy in the process. This energy is released as light and other particles such as neutrinos and gamma rays.

In detail, the nuclear fusion reaction in the Sun converts about 10³8 protons per second into helium at a temperature of 14 million Kelvin. The energy produced manifests as photons (light), neutrinos, and other particles. The neutrinos and gamma rays escape the Sun's core and propagate out into space.

The energy from this nuclear fusion diffuses slowly towards the surface of the Sun, lighting up the Sun and ultimately, our Earth. It's worth noting that though this process destroys mass, the amount of energy release, known as the Q value, is incredibly large, affirming the application of Einstein's mass-energy equivalence principle, E=mc².

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