PLEASE HELP ME WITH THIS

Answer:

a. the second nucleotide is wrong. It is a U but should be an A. No other nucleotides were effected by this, only the one was effected. This is a Point (Substitution) Mutation.

b. the third nucleotide is wrong. It is a T that was inserted. As you can see, the rest of the nucleotides are right, but since the T was added, it will mess up how the rest of the sequence is read. It will be read UAT GGC GAA... instead of UAG GCG AAU... see how it messed it up? This is an Insertion (Addition) Mutation.

c. the second nucleotide was deleted. This is called a Deletion Mutation. It will mess up the rest of the sequence, similar to how the example above did.

I hope that helped you understand!

Answer:

Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.

Myelinated axons are more energy efficient than unmyelinated axons.

Explanation:

Neurons are cells that specialize in transmitting messages to each other using a type of electrical signal. These signals carry information from outside your body to the brain, while others are the instructions for the various organs, glands and muscles to carry out functions.

Neurons receive these signals from other neighboring neurons through their dendrites. The signal then travels to the soma of the neuron, which is the main body of the cell, and finally travels down the axon to the synapse (space between the end of a neuron and another cell). The axon is a neuronal extension through which the electrical signal travels, extending from the soma to other neurons.

There may be layers of myelin, which consist of a layer of fat, covering the axons and where they have the function of acting as insulators to help keep the electrical signal inside the cell, which makes it move faster increasing the speed of transmission of the nerve impulse.

1) Myelinated axons transmit nerve impulses via continuous conduction. FALSE. In the axon, nodes of Ranvier are found at regular intervals along the length of the axon in the myelin sheath that surrounds it. These are small spaces that expose the axon membrane to the extracellular fluid and serve to allow the nerve impulse to travel faster, in a jumping manner and with less chance of error.

2) Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons. FALSE. In an unmyelinated axon, the movement of voltage across the membrane is due to ion flux that is limited by the time it takes for sodium ions to diffuse into the axon. Myelinated axons conduct faster because they are shorter than unmyelinated axons. In the latter, transmission is continuous but slower.

3) Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter. TRUE. The action potential conduction jumps from node to node, thereby they need fewer voltage-gated channels. Unmyelinated axons need voltage-gated channels in along the entire axon.

4) Myelinated axons are more energy efficient than unmyelinated axons. TRUE. The rate at which sodium input through one node can depolarize the axon at the next node is related to the current and capacitance across the membrane. Myelinated axons have faster action potential conduction because it jumps from node to node, thereby they use less energy because they don't have to travel the entire length.

5) Myelinated axons would be unaffected by diseases that attack the CNS. FALSE. For example, Multiple sclerosis (MS) is a demyelinating disease of the CNS in which the immune system attacks the myelin sheath or the cells.

The correct statements are:

Myelinated axons are nerve fibers that are protected by a covering called myelin. In both the central nervous system (CNS) and peripheral nervous system (PNS), oligodendrocytes and specialized cells known as Schwann cells work together to generate the myelin sheath. This sheath is composed of several layers of lipids, which are fatty substances that wrap around the axon in segments, leaving small spaces known as nodes of Ranvier.

Therefore, the correct options are A, C and D.

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Your question is incomplete, most probably the complete question is:

Check all that apply as characteristics of myelinated axons. Check All That Apply

Answer:

0.727

Explanation:

Penetrance can be defined as a measure of the association between a genotype and phenotype. In medical genetics, the penetrance of a mutation leading to the disease state is the proportion of individuals carrying the mutation and showing disease symptoms associated with such mutation. For example, if a mutation leading to the disease state has a 90% of penetrance, it is expected that 9 of each 10 individuals carrying the mutation will develop the disease, while the remaining 10% will not develop the disease. In this case, 8 of each 11 individuals carrying the PITXI mutation show symptoms compatible with the disease, and therefore the penetrance is 8/11 = 0.727 (73%).

Explanation:

One of the challenges may occur is achieving cleanliness, neatness, and order because orchard may be dirty at some point give its assosciation with actual dirt and moist.

Answer:

Human air pollution is caused by things such as factories, power plants, cars, airplanes, chemicals, fumes from spray cans, and methane gas from landfills. One of the ways that humans cause the most air pollution is by burning fossil fuels. Fossil fuels include coal, oil, and natural gas

Answer:

Organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere. These have been arranged from the smallest to the largest. The biosphere is the largest level of organization while the organelle is the smallest. However, the basic form of life begins with the cell. Many cells together form a tissue and several tissue form an organ.

Answer:

The water goes thru this process by evaporation, then it goes into the clouds, those little droplets get bigger until they get big enough to drop onto the ground, then when the sunlight comes it evaporate into the clouds again.

Answer:

a) This method of stickiness is advantageous over covalent interactions because it is weak and easily reversible.

b) The feet are equipped with millions of septae which collectively produce a synergistic effect that produces a powerful adhesive effect.

Explanation:

Geckos have their feet studded with tiny hair-like substances called septae, and these substances interact with the surfaces on which the Gecko climbs using weak van der Waals forces to produce stickiness.

a) The van der Waals interactions for the purpose of climbing is of more advantage over the covalent method of interaction because climbing involves a repetitive action of adhesion to the surface and destruction of such adhesion, and this involves the creation and the breaking of the bonds between the two surfaces easily. van der Waals forces being easily broken helps to achieve effective climbing. If the method of interaction is with a comparatively strong bond, the speed of creation and destruction of such bond is reduced, and the effectiveness of climbing is reduced.

b) Although van der Waals forces are weak forces, each foot of the wall Gecko has millions of septae that each create a van der Waals interaction, and the collective interactions produce a powerful adhesion causing the feet to stick effectively.

Answer:

C. a high-pitched sound

Explanation:

Answer: somatic cells

Explanation: the other three don’t cause mitosis, instead cause meiosis

Answer:

a. True

Explanation:

The statement being made is true. The Fasted State is where our bodies draw  from glycogen and fat reserves in order to create energy. This happens only when we do not eat that we enter into this state. The body first needs to draw all the energy it can from the glycogen stores and then once that is depleted it then begins to draw from fat stores for energy. Using all the stored macronutrients and turning them into energy to sustain the body.

Answer:

a. True.

Explanation:

Even though the cells in our body rely on glucose as a source of energy, they can replace glucose's energy with lipids or proteins' energy. In the brain's case, this is not possible since the blood-brain barrier, which is a highly selective barrier between the blood and the extracellular fluid in the central nervous system, allows the passage of glucose as the only source of energy. This is why maintaining the correct levels of glucose is crucial for the metabolism in the brain.

Answer:

chemical energy

Explanation:

we get this from food which pur bodies use as fuels to do things like running,talking,etc

Answer:

its static friction i got it right on edge

Explanation:

The three categories of forests are separated into temperate, tropical, and boreal.

Answer:

There are three type of forest they include boreal, temperate and tropical forest

Explanation:

Temperate forest is mostly found across the Eurasia and East North America which vary throughout the year mainly because of the of the four main season which are on the latitude. Tropical forest is mainly found near the equator like Central America, Southern Asia and also sub Saharan Africa. Boreal forest is also known as Taiga is known to be the largest biomes land found in North America, Siberia, and Scandinavia.

Answer:A,B,C

Explanation:

Answer:

Explanation:  

Due to technical problems, you will find the complete explanation in the attached files

Answer/Explanation:

Recall:

Volume of a sphere = ⁴/3πr³

Surface Area = 4πr²

✔️For radius (r) = 1 mm:

Volume = ⁴/3 × π × 1³ = 4.19 mm³

Surface Area = 4 × π × 1² = 12.57 mm²

Ratio of volume to surface area = 4.19 : 12.57 = 1:3

✔️For radius (r) = 3 mm:

Volume = ⁴/3 × π × 3³ = 113.1 mm³

Surface Area = 4 × π × 3² = 113.1 mm²

Ratio of volume to surface area = 113.1 : 113.1 = 1:1

Answer:

cholesterol

Explanation:

it enhances Chlorophile in plants thus also deals in rate of photosynthesis

Answer:

I'm pretty sure it is d.

Explanation:

Answer:

It contains half the genetic material (is haploid).

Explanation:

right on edge

Answer:

an arborist

Explanation:

An arborist is an expert on trees meaning they would be the one who would know best

Answer:

cellular respiration breaks down sugars and other molecules to use the stored energy

Answer: The feathers are easy to repair as the cells of birds help in replacement of damaged and old feathers.

Explanation:

The follicles of the feathers have regenerating cells that help in regrowing the feathers when the feathers are damaged and require to be replaced. The regrowth of feathers is a natural process that happens in all birds. The feathers are replaced by one or two molt seasons per year. In these seasons they shed their feathers and new feathers reappear. The newly growing feathers are stiff, and hard similar to nails.

Answer:

bicarbonate ions

Explanation: (HCO3-)

Answer:

What are you supposed to do?

Explanation:

Answer:

The answer is A, and C.

Explanation:

Answer:

sound waves. they come in longitudinal waves and vibrations. echo is wrong though youre right on that one