Is the teacher wrong or am I missing something? I got 10 minutes to finish please help.

Answer:

1800km

Explanation:

This question will be answered using the attached S-wave graph.

The graph is plotted as time (y axis) against distance (x axis).

So, when

y = 6 minutes 40 seconds

x = 1.8 * 10³ km

So, we have:

x = 1.8 * 1000km

x = 1800km

Answer:

D- Cementation

Explanation:

Cementation, in geology, hardening and welding of clastic sediments (those formed from preexisting rock fragments) by the precipitation of mineral matter in the pore spaces. It is the last stage in the formation of a sedimentary rock.

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Explanation:

Humans developed the first planned plant hybrids early in the 18th century, during this period of intense interest in botany and plant anatomy. Collecting plants became a popular pastime for the wealthy and well educated

Answer:

Explanation:

yes

Answer:

yess

Explanation:

Answer: Layered rocks and evolution of life and radiometric time scale based on radioactivity of chemical elements

Explanation:

Two scales are used to date these episodes and to measure the age of the Earth: a relative time scale, based on the sequence of layering of the rocks and the evolution of life, and the radiometric time scale, based on the natural radioactivity of chemical elements in some of the rocks.

Answer:

Weight = mass * force of gravity

W = 3 * 9.81

Explanation:

The diffusion of water molecules a secectively permeable membrane.

The net passive movement of molecules or particles from areas of higher concentration to areas of lower concentration is known as diffusion. There needs to be a concentration gradient for diffusion to happen.

The dissimilarity in the quantity of solutes, particles, or molecules between the two locations will drive them to travel between the two regions.

The gradient created by the uneven particle concentration between two fluids will cause the particles to move in order to balance the discrepancy in concentrations. However, solutes do not migrate in a single direction during the diffusion process.

Therefore, The diffusion of water molecules a selectively permeable membrane.

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Answer:

For the approach of how does pineapple consumption affect the number of digestive bacteria?, pineapple consumption is  the independent variable (option B).

Explanation:

The formulation of a hypothesis is not complete without the existence of the independent and dependent variables, the main variables from the research point of view.

The independent variable is one whose change or modification is capable of impacting the dependent variable, which is one that can be quantified or measured.

According to the approach, if somebody want to know how the consumption of pineapple influences the number of digestive bacteria, the independent variable is the consumption of pineapple, which can be controlled and modified, while the characteristic that is under the influence of this variable is the amount of bacteria, so that the latter is the dependent variable.

The other options do not apply because:

Answer:

D. Carbohydrates are the main component that makes up cell membranes

Explanation:

The main component of the cell membrane is a double layer of phospholipids - molecules with a phosphate head and fatty acid tail. Therefore D is incorrect. There are some carbohydrates in the cell membrane, but they are not the main component.

The statement 'carbohydrates are the main component that makes up cell membranes' is NOT true (Option D).

In conclusion, the statement 'carbohydrates are the main component that makes up cell membranes' is NOT true (Option D).

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Answer:

B) A vesicle bud will no longer be pinched off from a membrane

Explanation:

Dynamin is a protein responsible for endocytosis, the process where the cell takes substances in from outside the cell through a system of vesicles. At the edge of the cell, the membrane pinches in to form a vesicle, which buds off from the membrane and enters the cell.

The step of this process that dynamin is involved in is in cleaving newly formed vesicles from the membrane. Without it, a vesicle bud will no longer be pinched off from a membrane

Answer:

Finger kinematics during grasp were measured on 5 cadaveric hands. To simulate finger flexion, the FDP was activated by a motor while intrinsic muscles were loaded at various levels (0, 125, 250, 375 or 500g). Finger movement was characterized by the order of metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joint flexion and by the maximal fingertip-to-palm distance during finger closure.

Results

Without any intrinsic muscle contribution (0g load), FDP activation resulted in flexion of all 3 joints, whereby flexion began at the proximal interphalangeal joint, followed by distal interphalangeal joint and then metacarpophalangeal joint. With increasing intrinsic muscle load, finger flexion was initiated at the metacarpophalangeal joint, followed by the proximal interphalangeal and distal interphalangeal joints. This altered joint flexion order resulted in a larger maximal fingertip-to-palm distance during finger flexion. The difference between the 2 extreme conditions (0g vs. 500g of intrinsic muscle load) was 19mm.

Discussion

These findings demonstrate that simultaneous activation of the FDP and the intrinsic muscles results in an apparently more functional hand closing compared to FDP activation alone because of altered kinematics and larger fingertip-to-palm distances.

Clinical Relevance

These findings suggest that intrinsic muscle balancing during reconstruction of grasp in tetraplegic patients may improve function. Keywords: grasp, hand, intrinsic muscles, tendon transfer, tetraplegia

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Introduction

Regaining arm and hand function has been identified as the highest priority for persons with tetraplegia.1,2 Recovering even partial function can have an enormous impact on independence, which enhances quality of life.3 Restoration of finger flexion is an achievable goal in reconstructive surgery of many tetraplegic hands. It can be performed if both the extensor carpi radialis longus and brevis are fully innervated, in which case the extensor carpi radialis longus is transferred to the flexor digitorum profundus (FDP),4 which enables patients to grasp and hold objects. However, by restoring FDP function only, fingertips coming into full flexion approach the bases of the fingers rather than the center of the palm.5 This happens because finger flexion begins at the distal interphalangeal (DIP) joint, and fingers curl into flexion rather than following a large arc, which would provide a broad sweeping movement.6 The roll-up finger flexion tends to push large objects out of grasp5 and is therefore considered less functional in daily life.

In normal hand function, the intrinsic muscles, both the lumbricals and interosseus muscles balance finger movement7 and create this broad sweeping movement. Besides abducting and adducting the fingers, they are responsible for coupling metacarpophalangeal joint (MCP) flexion with interphalangeal joints (IP) extension.8,9 For 2-dimensional finger movement during grasp, the lumbricals and the interossei provide the same function, as shown by Leijnse et al.10 Since their function is redundant in the sagittal plane, we refer to them as 1 entity, the intrinsics. Intrinsic function is so important that even when patients have neither functional intrinsic muscle nor a sufficient number of transferable muscles to reconstruct them with an active tendon transfer, passive tenodeses are used to substitute for intrinsic muscle function.11,12

We characterize functional hand movement for tetraplegic persons as a large fingertip-to-palm distance during flexion because this enables them to grasp objects of varying sizes and shapes necessary for activities of daily life. The exact contribution of the intrinsic muscles to this function is incompletely understood. Therefore, the purpose of this study was to quantify the role of intrinsic muscle force in creating a functional grasp. We hypothesized that increasing intrinsic muscle contribution would result in a more functional grasp.

Explanation: i hope this helps plz tell me if its wrong so i can fix it :)

The intrinsic muscles, including the lumbricals and interventions ” muscles, balance hand movements and provide this broad sweeping motion in normal hand function.

The intrinsic muscles define the arch of the hands, twist the knuckles, and resist with the thumbs.

The intrinsic muscles, including the lumbricals and interventions ” muscles, balance hand movements and provide this broad sweeping motion in normal hand function. They are able to bridge metacarpophalangeal joint (MCP) flex with interphalangeal joint (IP) extension, in addition to abducting and adducting the fingers.

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Answer:

you can't.

Explanation:

You can observe evidence there may be a God, but there will always be a counter argument showing that God isn't real. Basically God and biology are ideas both of which may be seen as valid. in other words it depends on who you ask

Answer:

By praying.

Explanation:

Answer:

277 Miles

Explanation:

1, 450 Divided by X amount of time = 4 Miles every Hour

Answer: B

Explanation:

Thats what the teacher told me

The scientists believe that planets form when a rotating cloud of space dust and gases flattens and condenses, forming a new star; the remaining matter forms an accretionary disc around the star, gradually coalescing to form planets, as described in Option C, also known as the "nebular hypothesis."

The nebular hypothesis is the most widely accepted scientific theory for the planetary systems, such that the solar system and, as per this theory, a cloud of gas and dust, called a nebula, collapse due to gravitational forces; the nebula contracts, and it rotates faster, flattening into a disk, which eventually cools and condenses, forming a protoplanetary disk.

Hence, the scientists believe that planets form when a rotating cloud of space dust and gases flattens and condenses, forming a new star; the remaining matter forms an accretionary disc around the star, gradually coalescing to form planets, as described in Option C, also known as the "nebular hypothesis."

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1) Chemical to mechanical (calories -> muscle contractions)

2) mechanical to mechanical (muscle -> motion)

3) mechanical to thermal (motion -> heat from the body causes sweating)

The potential energy is stored in the body chemically (via food). That potential energy is then released when the body is put in motion.

Answer:

Damage to the nerve cells without myelin sneath is permenent because the regeneration of nerve cells can only happen when schwann is present!

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God bless :)

Answer:

there is a complete mirror image transposition of the thoracic (chest) and abdominal organs , and anterior-posterior (front-back) symmetry is normal. Many affected people have no associated health issues when the condition is isolated.

Explanation:

Answer:

Acid , phenol or protein

Explanation:

The ratio of absorbance at 260 and 280nm is what is usually used to assess the purity which a DNA or RNA posses. A ratio of 1.8 is generally accepted as being pure for a DNA sample and a ratio of 2.0 is generally accepted also as being pure for RNA. when the ratio is significantly lower in each case, it indicates that there is presence of protein, phenol or other contaminants.

Answer:toes

Explanation:

Fingers

Answer:

it gives water and hold the plant

and contrubite food for the whole part

Explanation:

My sister is right. The stomach has structures in its branches that see to the breakdown of food materials.

The digestive system is the system in the body that takes care of the breakdown of food materials and absorption of nutrients from food. The stomach houses most of the structures in the digestive system.

When food is broken down in the stomach, It is sent to other parts of the body via the circulatory system in the body. Therefore, my sister is right.

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Answer:

the diesel fuel in the delivery truck

Explanation:

i took the quiz

Answer:

here u goo got a 100%

Explanation:

Answer:

Hope it helps...

Explanation:

Pneumococcal disease is caused by bacteria called Streptococcus pneumoniae (pneumococcus). People with pneumococcal disease can spread the bacteria to others when they cough or sneeze. Symptoms of pneumococcal infection depend on the part of the body affected.

Answer:  

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet. It was proposed by Alfred Wegener.

Explanation:

Answer:

i started swimming this year its pretty fun : ) I believe the answer to your question would be a pull down/breakstroke pull

Explanation:

I hope this helps your welcome..

Pull-downs are essential to a fast breaststroke race. Without a good pull-down, you have a major disadvantage. You don’t want to start the race behind your opponents! If you’re looking to improve your breaststroke time, mastering the pull-down is a great way to do it. This guide is filled with easy steps to strengthen your race through a powerful pull-down.