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4 years ago

Which section of the brain is responsible for coordinating muscle movements

Biology

1 answer:

jarptica [38.1K]4 years ago

4 0

Answer:

The cerebellum (back of the brain) and the brainstem (middle of the brain)

Explanation:

Muscle movement coordination can be voluntary or involuntary. There are different sections of the brain responsible for the two;

Voluntary movement of muscles is coordinated by the brainstem in addition to other functions such as sneezing, swallowing, vomitting, etc.
Involuntary coordination of muscles is controlled by the cerebellum in addition to maintaining posture, balance and body equilibrium.

Hence, both the cerebellum and the brainstem are responsible for coordinating muscle movement.

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Chemical reaction equations, such as the one for photosynthesis, show the reactants and products of a reaction. How does this si

Natali5045456 [20]

The right answer is It does not show that photosynthesis consists of many separate reactions.

It takes six molecules of carbon dioxide and six molecules of water to synthesize a molecule of glucose, releasing six molecules of oxygen, thanks to the light energy.

6 CO2 + 6 H2O + light energy ==> C6H12O6 (glucose) + 6 O2

But this balance is in fact broken down into two successive stages:

Light phase or photochemical phase:

12 H2O + light ==> 6 O2 + chemical energy (24 H).

The Calvin cycle (dark phase):

6 CO2 + chemical energy (24 H) ==> C6H12O6 + 6 H2O.

5 0

3 years ago

Read 2 more answers

Plasma membrane of a skeletal muscle fiber - _________Extension of the sarcolemma that dives into the muscle fiber and surrounds

Tpy6a [65]

Answer:

1. Sarcolemma

2. T-Tubule

3. Sarcoplasmic reticulum

4. Terminal Cisternae

5. Myofibrils

6. Myofilament

7.Thick filament

8. Thin filament

Explanation:

These are all parts of the skeletal muscle and they are all involved in the contraction of your muslces.

The sacrolemma is also known as the myolemma. It is a specialized plasma membrane of the skeletal muscle cell. It is an excitable membrane that shares similarities to the cell membrane of a neuron cell.

The T-tubule extends from the sarcolemma to the sarcoplasmic reticulum (SR). This is the smooth endoplasmic reticulum of the muscle cell. When the sarcolemma gets excited, it triggers the SR to release the calcium ions stored in it. The release of Calcium ions triggers the contraction of myofilaments.

There are two types of myofilaments, the thick myofilament and the thin myofilament. These myofilaments contain contractile proteins, actin and myosin. Thick myofilaments contain myosin where one thick myofilament contains 300 myosin molecules. Thin myofilaments contain contractile and regulatory proteins. These myofilamens make up myofibrils.

6 0

3 years ago

Identify which function group monosaccharides have in the greatest abundance

Ne4ueva [31]

Answer;

-Hydroxyl groups.

-They have multiple hydroxyl groups.

Explanation;

-Monosaccharides are the simplest form of sugars found in common food items such as honey, cane sugar, fruits. They are the building blocks of other carbohydrates (disaccharides and polysaccharides).

-The are formed by three elements and three elements only: Carbon (C), Hydrogen (H) and Oxygen (O). Monosaccharides have two broad classifications on the basis of the functional group present in them, that is; aldose (contains aldehyde group) and ketose (contains a keto group).

-Monosaccharides contain multiple hydroxyl groups, and are responsible for the hydrophillic property of monosaccharides allowing them to dissolve in water easily.

4 0

3 years ago

Why does NADH and FADH2 donate their H+ to the electron transport chain readily?

galina1969 [7]

Answer:

b. Because they have a low affinity for the H+

Explanation:

All electrons that enter the transport chain come from NADH and FADH2 molecules that are produced in earlier phases of cellular respiration: glycolysis, pyruvate oxidation and the citric acid cycle.

NADH is very good at donating electrons in redox reactions (that is, its electrons are at a high energy level), so you can transfer your electrons directly to complex I and transform it back into NAD +. The movement of electrons through complex I in a series of redox reactions releases energy, which the complex uses to pump protons from the matrix into the intermembrane space.

FADH2 is not as good for donating electrons as NADH (that is, its electrons are at a lower energy level), so it cannot transfer its electrons to complex I. Instead, it introduces electrons to the transport chain through complex II, which does not pump protons through the membrane.

4 0

3 years ago

A total of _____ amino acids compose the majority of protein in living things and nine are _____ to human

Evgen [1.6K]

A total of 20 amino acids compose the majority of protein in living things and nine are essential to human.

All living organisms, from bacteria to people, depend on amino acids for survival.
The same 20 types of amino acids are present in all living things.
Only 21 amino acids are required by the human body to create all the proteins required for growth and function.
Your body can create thousands of different types of proteins with only the same 21 amino acids because they can be ordered in a wide variety of ways.
The body is unable to produce essential amino acids. They must therefore originate from food.
Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are the nine essential amino acids.

learn more about amino acids here: brainly.com/question/1201532

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8 0

2 years ago