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Answer:  the Mesozoic era came before the others however the accurate earliest eon is the Hadeon to be exact, but from the options you provided, answer it D.

Explanation:

Answer:

Sugar, phosphate group, and a nitrogenous base.

Explanation:

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Answer:

organ

Explanation:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

The biological level of organisation range from organelle to biosphere. Therefore, option (A) cell  forms the fundamental base.

Cells join to form tissues in larger animals, which are clusters of similar cells performing similar or related jobs. Organs are groups of tissues that work together to fulfill a certain task. Organs can be found in both plants and animals. An organ system is a more advanced level of organization made up of organs with similar functions. 

A population is the aggregate term for all members of a species that are present in a given location. An ecosystem is made up of all the living things that exist in a specific location as well as the abiotic, non-living elements of that environment, such as soil nitrogen or rainwater. The biosphere is a group of organisms that is organized at the highest degree possible.

Thus, option (A) cells forms the fundamental base for all other levels

in the hierarchy of life.

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You'll have to follow the dichotomous key that's provided to you. Start by choosing less than 10 legs, then choose 6 legs, then with wings, then wings with 1 or 2 colors... etc. You should end up identifying an organism this way.. following the path.

Answer:

chlorine (17)

nitrogen (2,5)

magnesium (12)

lithium (2,1)

Explanation:

1. chlorine

2. magnesium

3. nitrogen

4. lithium

Answer:

The process of male and female gamete is called as fertilization. It is the process which initiates that transfer of half of the chromosome from each parent namely father and mother. The chromosome number of body cell is 46, whereas that of germ cell is 23 chromosomes.

Explanation:

Answer: Absent a gentle breeze or mighty gale to circulate both warm and cold weather around the Earth, the planet would become a land of extremes. Areas around the Equator would become intensely hot and the poles would freeze solid. Whole ecosystems would change, and some would completely disappear.

Answer:

Using Bacteria such as Acidithiobacillus ferrooxidans to leach copper from mine tailings has improved recovery rates and reduced operating costs. Microbial leaching is especially useful for copper ores because copper sulfate, as formed during the oxidation of copper sulfide ores, is very water-soluble.

Explanation:

Answer:

hope it helps. hear is the answer

Answer: D. Digestion increases as the volume of the enzyme increases.

Explanation:

Enzymes speed up reactions by reducing the activation time of a reaction. If there are more enzymes therefore, the reaction will move faster.

Pepsin is an enzyme that prefers acidic conditions so it can work with dilute HCL. It can also work in temperatures of 40 °C without getting denatured. As more Pepsin is added therefore, the reaction will move faster and digestion will increase.

Answer: The answer would be D!!

Explanation:

Answer:

Damaged DNA causes an increase in the number of mutations in the cell: this is extremely dangerous for the body and in fact this process is at the basis of the birth of cancer cells.

To avoid this, the cell is equipped with some molecular protective systems including the activation of the p53 protein. p53 induces recruitment of DNA damage repair systems and stops cell replication until the damage has been repaired. If the damage cannot be repaired p53 induces cell death through apoptosis

Answer:

It’s B

Explanation:

Answer:

Yes

Explanation:

Cellular respiration is the process of using the chemical energy stored in sugars. The reaction is the mirror image of photosynthesis: glucose, + oxygen yields carbon dioxide +water. Like all living things, plants go through cellular respiration to obtain energy for growth and reproduction.

Answer:

thymine

Explanation:

Adenine binds to thymine in a DNA and with uracil in RNA

Answer:

Lysosome

Explanation:

Answer:

pollination is the transfer of pollen grain from Male part to female part of flower

two types of pollination

1. self pollination

2.cross pollination

it is important for plant existence

Answer:

Heterotrophs

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Answer:

C

Explanation:

If your not carefull who you're around you can get hurt or i dont known how to explain it

Answer:

A

Explanation:

Answer:

Bacteriophages (phages) are viruses that infect only bacteria and do not infect mammalian or plant cells. Phages are ubiquitous in the environment. Phages or bacteriophages were chosen as a model system for their simplicity, as they only contained protein-coated nucleic acid. Alfred D. Hershey and Martha Chase (who were part of the bacteriophage group) in 1952 studying the infection of the bacterium Escherichia coli by the T2 phage show that the information definitely resides in the DNA. They used phage with either [32P] -labeled DNA or [35S] -labeled proteins to infect the bacteria. Immediately afterwards, they centrifuged the sample so that the infected bacteria remain in the pellet and the virus capsids (proteins) remain in the supernatant. [35S] is found in the supernatant, whereas [32P] is found in bacteria. After one cycle of infection, it was observed that when phage labeled in the [35S] proteins were used, only 1% of the radioactivity was incorporated into the progeny. But when phages were [32P] labeled, more than 30% of the radioactivity was in the progeny. They showed directly that what is transmitted from one progeny to another is the DNA and not the proteins, despite having first "diluted" in a bacterium.

Explanation:

Bacteriophages are viruses that infect bacteria in a specific way. Bacteriophages, like other known viruses, are found in an intermediate zone between living organisms and inert matter. Bacteriophages bind to the host pathogenic bacterium, introduce their genetic material, replicate inside it and destroy it. Hersey, along with his assistant Martha Chase, used phages because they knew that T2 phages were made up of 50% proteins and 50% nucleic acids and that phages entered bacteria and reproduced. As the progeny carried the same infection traits, the genetic material of this had to be transmitted to the offspring, but the mechanism was unknown. These scientists carried out an experimental work with the T2 virus, a bacteriophage that infects the bacterium Escherichia coli, which it reproduces by attaching itself to the outer wall of the bacterium, injecting its DNA into it where it replicates and directs the synthesis of the phage's own proteins. Phage DNA is encapsulated within proteins and produces phages, which lyse or disrupt the cell and release phage from progeny. They infected a culture of bacteria with radioactively labeled phages: the protein coat with sulfur (35S) and its DNA with phosphorus (32P). After infection, they separated the phages from the bacteria by violent shaking using a mixer (hence the name of the experiment). By centrifugation the much smaller phages remained in the supernatant and the much larger bacteria in the pellet. 85% of the radioactivity corresponding to DNA appeared in the pellet and 82% of the protein in the supernatant. This result supported the idea that DNA was the only component of the bacteriophage that penetrated the interior of the bacteria and, having the ability to form new phages, constituted the genetic material.

The correct answer is:The organism's body must be covered by sediment or another substance before its body decays.

Explanation: For a fossil to form, the organism's body must be rapidly buried in sediment, ash, or another substance before it can decay or be eaten by scavengers.

Over time, the minerals in the surrounding sediment or substance can replace the organic material in the bones, forming a fossil. Tracks, burrows, and other trace fossils can also form when sediment or another substance fills in the impressions left by an organism before they are disturbed.

Getting stuck in rock is not necessarily a requirement for fossilization, as fossils can also form in sedimentary rock or other types of rock.

Lack of oxygen: Decay requires oxygen, so organisms are more likely to fossilize in environments where oxygen is limited or absent, such as in deep water, bogs, or quicksand.

Low acidity: Acidic environments can dissolve bones and other hard parts, so fossils are more likely to form in environments with neutral or basic pH levels.

Lack of disturbance: Fossils are more likely to be preserved if they are not disturbed after burial. For example, if an organism's body is exposed to air or water before it can be buried, the bones may be scattered or destroyed.

Overall, fossilization is a rare and complex process that requires a combination of specific conditions to occur. As a result, the fossil record provides only a partial and biased glimpse into the history of life on Earth.

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Answer: Fred Griffith

Explanation: :)

Answer:

ecological succession

Explanation:

Answer:

Ecological succession

Answer:

C. structure C, located in the nucleus in Cell A and structure C, located in the cytoplasm in Cell B

Explanation:

This question contains images that depicts an eukaryotic cell (animal) and a prokaryotic cell (bacteria). According to the question, a teacher asked the students to label the structure of each cell that contains the genetic code (DNA) and tell where it is located.

In an eukaryotic cell, the genetic material (DNA) which contains the genetic code is located inside a well defined membranous structure called NUCLEUS while the genetic material in a prokaryotic cell is found naked in a region of the cytoplasm called NUCLEOID as they lack a membrane-bound nucleus. Based on this explanation;

- Structure C is the genetic material (DNA) which contains the genetic code of cell A (eukaryotic cell), hence, the genetic code of cell A is found in structure C, which in turn is located in the centrally-placed NUCLEUS.

- Structure C is the genetic material containing the genetic code of cell B (prokaryotic cell), hence, the genetic code of cell B is found in structure C, which in turn is located in the CYTOPLASM.

Answer:

Roughly n = 171

Explanation:

512/3 = 170.666666667

the round it to the nearest tenth which is 171, So N is roughly 171

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Explanation:

Given

n³ = 512

Putting cube root on both sides we get

³√n³ = ³√8³

Therefore n = 8

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Answer:

If an orangutan cell had 24 chromosomes, then the cell is diploid or haploid (circle one). If a mosquito cell had 3 chromosomes, then it would be a gamete or a somatic cell (circle one).

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All mosquitoes have six diploid chromosomes (2N = 6), and their chromosomes are either submetacentric or metacentric, mosquito cell has 3 chromosomes and is haploid.

Three pairs of chromosomes make up the Anopheles mosquito's chromosomal complement: two sex chromosomes As a consequence, when a sperm and egg cell join during fertilization, the resultant zygote has 46 chromosomes.

The number of chromosomes and their shape in mosquitoes are extremely similar mosquito cell has 3 chromosomes, and are haploid.

Therefore, to go from haploid to diploid cells, we only need to double the number of chromosomes. This quantity is denoted by the abbreviation 2n, where n is the number of chromosomes.

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