The sciatic nerve extends from the lower spinal cord to the foot. If a person's sciatic nerve is 0.914 m in length and the speed of an action potential is 107 m/s, how long will it take for a nerve impulse to travel the full distance of this nerve?

Answer:

A trench would be formed, a ridge would develop, magma would be released and the crust would separate.

Explanation:

Look at the picture and try to identify the process. Once you have identified the process, think of the landforms formed and what processes are involved. The phrase "seafloor spreading" in the question tells us that this is an oceanic divergence process.

When two oceanic plates diverge (move apart), tensional forces are exerted. Fractures may occur (faulting) near the plate boundary. Magma rises at the zone of divergence (a large fracture between the two plates). It solidifies and builds up to form a mid-oceanic ridge, a central ridge dividing the ocean basin. The cooled magma forms a new sea floor between the diverging plates (sea floor spreading).

For your info, I only gave you the explanations for the options chosen and there are actually more landforms and processes that occur in oceanic divergence. If you want the full explanation of the entire process, let me know.

Answer:

B

Explanation:

The advantage of cyanobacteria over alternate biofuels is that multiple processing steps can be avoided.

Cyanodiesel, a byproduct of cyanobacteria, has unlimited growth potential and are used in various fields of biotechnology.

⇒ Transform solar energy into chemical energy by the process of photosynthesis

⇒ Fixing of atmospheric nitrogen, helping in the increase of soil fertility

⇒ Widespread applications in pharmaceuticals and agriculture

The advantage of cyanobacteria to produce isobutanol over alternate biofuels is that multiple processing steps required in biofuel production from other sources can be avoided. So option B is correct.

Cyanobacteria are recently been engineered to produce a variety of chemicals, such as ethanol, Isobutanol, and Isoprene, directly from solar energy, carbon dioxide, and water. This makes cyanobacterium a potential new cell factory for the production of energy and chemicals to meet global energy and climate change challenges.

Synthetic cyanobacteria are engineered through heterologous biosynthesis to create value-added chemicals through photosynthesis. Several chemicals have been successfully generated in synthetic cyanobacteria.

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The type of organisms that marine scientists believe may provide clues to marine viruses are microbes.

Marine viruses are specific types of viruses found in marine environment or habitat.

Marine viruses like other viruses need to infect a living host to survive and replicate themselves. Marine viruses infect almost every living organism in the marine habitat.

Marine viruses are generally known to be microbe killers. Marine viruses infect their host cell by inserting their genetic material and hijacks the machinery inside the cell in order to replicate.

Therefore, the type of organisms that marine scientists believe may provide clues to marine viruses are microbes.

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Answer:

DNA looks like a twisted ladder!

Explanation:

It's made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar.

Answer:

DNA looks like a twisted ladder!

Explanation:

It's made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar.

"Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. " The genotype for the offsprings is Pp only. Option C. This is further explained below.

Generally, the genotype is simply defined as a person's unique set of genes.

In conclusion, Flowers with a purple hue are more likely to bloom than those with pink hues since purple is a dominating feature.

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When two different forms of a virus infect the same cell, the host cell may manufacture viral particles by a process called antigenic shift.

An antigen is any molecule or molecular structure that may trigger a suitable immune response in the host.

An antigen can be the target for antibody binding during classical adaptive immune responses.

In conclusion, when two different forms of a virus infect the same cell, the host cell may manufacture viral particles by a process called antigenic shift.

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Rivers with regularly floods leaves fertile soil along their banks which is why a civilization will choose to live near there.

This is defined as the ability of land to produce crops and vegetation in abundant quantities.

Flooding washes minerals and humus to the bank of rivers which favors growth of plants which is why option D was chosen.

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Answer:

It controls all voluntary movement, such as speech and walking, and involuntary movements, such as blinking and breathing. It is also the core of our thoughts, perceptions, and emotions.

Explanation:

None.

Trucks, houses and swimming pools are measured using: millimetres. Thus, option "C" is correct.

If it is four millimetres wide on the drawing, then you can divide 16 by 4 to find that every four meters in real life are equivalent to one millimetre in the drawing.

Thus, option "C" is correct.

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"Chromosomes" are the structures in the nucleus that contains the DNA

Answer:

Living things are divided into five kingdoms: animal, plant, fungi, protist and monera. Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.

Answer:

Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.

Explanation:

Answer:

The opossum, which is native to North America, and the kangaroo, which is native to Australia, are both marsupials.

Answer:

an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.

Like a Plant

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The type of point mutation that is depicted here is missense mutation.

Missense mutation is defined as the type of point mutation where by a mistake occurs in the coding of DNA leading to the change of the DNA base pair.

From the example given, leucine (c t a) is transformed to valine (g t a) which is a different base pair.

Therefore, the type of point mutation that is depicted here is missense mutation.

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Answer:

missense mutation. aka the first answer

Explanation:

The charge of the electrical impulses sent from stimuli is extremely positive. Thus, the correct option is A. The net charge of such electrical impulses is positive because of the positively charged ions of the Na+.

An electrical impulse may be defined as a nerve impulse that contains an electrical signal which travels throughout the body by the axon terminal.

In the resting potential state, the potential difference is -80mV, while after reaching the electrical impulse it changes to +40mV. This happens due to an electrical imbalance between sodium and potassium influx and efflux.

Therefore, the correct option is A.

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Are the daughter cells produced by mitosis genetically unique substantive, cannot divide again substantive, have half the DNA of the parent cell substantive, and are genetically identical to each other?

Answer:

At the end of meiosis and cytokinesis, four haploid cells are produced from a single diploid cell. These haploid daughter cells have half the number of chromosomes as the parent cell and are not genetically identical to the parent cell.

Answer:

It protects ecosystems, supervises public access of lands, and manages wilderness areas. It supervises public access of lands, manages wilderness areas, and enforces federal wildlife laws.

Answer: ooooooooooo

Explanation:

Answer:

The variety of life in the world or in a particular habitat or ecosystem

Answer:

The genotype of the Dad must be X^AY because that's the only possible genotype for a normal male.

The genotype of the mom must be X^AX^a because that's the only way to have a colorblind son while being a normal mom. The colorblind son gets a Y from his dad and X^a from his mom.

The genotype ratio among the children must be 25% heterozygous dominant, 50% homozygous dominant, and 25% heterozygous recessive.

The phenotype ratio among the children must be 75% normal and 25% colorblind.

The  transformation maps rectangle QRST to rectangle Q’R’S’T’ is reflection.

Reflection of light is an optical phenomenon in which a visible electromagnetic wave strikes a given medium, returning to the original medium in which it propagated.

In this case, reflection of an object occurs in such a way that it is equally reflected where the same points are in the same places.

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Answer:

Plasma membrane- outer boundary of the cell

Nucleus- houses DNA/control center of the cell

Ribosome- cellular structure where proteins are made

Cytoplasm- interior of a cell that maintains cells and shape and contains organelles

Mitochondria- power house of the cell

Chloroplast- organelle found only in plant cell (because it is used for photosynthesis)

Flagellum- hair like structure that enables cell movement

Answer:

tRNA

Explanation:

the transfer RNA is an RNA molecule that serves as a link between the mRNA and the growing amino acid chain that forms a protein.

Globular clusters is a type of star system where the stars are tightly bounded by gravity.

A star system can be defined as small number of stars that orbit around each other and are bound by gravitational force of attraction.

It is also called a stellar system.

Globular clusters is a type of star system with the following features;

Hence, globular clusters is a type of star system.

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Answer:

D) Globular clusters

Explanation:

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Answer:

Primary lymphoid organs: the bone marrow and the thymus

secondary lymphoid organs: adenoids tonsils spleen

Answer:

Explanation:

Answer:

C.  Plant, Animal, Fungi, Protist, Bacteria 

Explanation:

Another word for bacteria would be monera. The more technically correct version of the answer would be animal, plant, fungi, protist, and monera. However, monera is basically bacteria. So C is your best answer.

Answer:

c

Explanation:

Life used to be organized into 2 groups : plants and animals by Swedish botanist Carl Linneaus. Then it was again classified by American ecologist R. H. Whittaker into 5 kingdoms :

The option which lists these options is c (kindly note that bacteria are classified under Kingdom Monera)

Hadean Eon (Precambrian Time):

Archaean Eon (Precambrian Time):

Proterozoic Eon (Precambrian Time):

Cambrian Period:

Ordovician Period:

Silurian Period:

Devonian Period:

Carboniferous Period:

Permian Period:

Triassic Period:

Jurassic Period:

Cretaceous Period:

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The nutrient cycle is defined as the transportation of nutrients from different components of the environment. A living state refers to the amount of minerals present in an ecosystem.

The nutrition cycle is divided into two categories. The following are some of them:-

Phosphorus is a nutrient cycle that occurs as a result of sedimentation. The following are the phosphorous' sources, as stated in the question:

Leaching is the process of a nutrient dissolving when raining and enhancing the nutritious quantity of the soil.

Mineralization and immobilization reactions mediated by the microbial biomass pool, as well as the solubilization of inorganic phosphorus-containing minerals by organic acids, inorganic acids, and chelating agents produced by soil organisms, are all part of the phosphorus cycle.

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