How does the muscular system work with the nervous system?

Answers

Answer 1
Answer: Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.

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What are the three rules that govern the filling of atomic orbitals by electrons

Answers

Rule 1. aufbau rule - energy levels filled so lowest energy level filled first.
Rule 2. pauli exclusion principle - maximum of 2 electrons may be placed in each energy level. Provided the spins of electrons are of opposite sign.
Rule 3. hunds rule - when energy levels are equal one electron is added to each energy level in turn with their spins unpaired until each energy level has one electron.

If lactose is present,would the lac operon in bacterial cell be on or off? Explain

Answers

Explanation:

The lac operon

When lactose is present, bacteria need the enzymes to break it down. But if no lactose is present, bacteria do not need to waste resources making enzymes to break down a sugar that isn't there. Like a switch, the operon is turned on when the enzymes are needed.

Organisms that cannot make their own food and must obtain energy from external sources are calleda. autotrophs.
b. heterotrophs.
c. thylakoids.
d. plants.

Answers

Answer: Heterotrophs

Explanation:

Organism that cannot make their own food and depends on the external sources for its energy are known as the heterotrophs.

They are dependent on the other organisms for their energy. They feed on the plants or animals for their energy.

Other than plants all the other organisms are dependent on food from other sources as they lack the ability to make food by their own.

Heterotrophs are the organisms that feed on other organisms to get energy to survive. Option B, Heterotrophs.

What are heterotrophs?

Organisms are classified into autotrophs and heterotrophs depending on how they get energy.

Heterotrophs need to feed on other organisms to get the necessary energy to survive. They do not produce their own food as producers do.

Depending on the food chain, heterotrophs might be either primary, secondary, tertiary consumers, and so on.

Also, depending on their source of food, they might be either herbivores (if they feed on plants) or carnivores (if they feed on animals). Omnivores can feed either on plants or animals.

In the exposed example, the organisms that cannot make their own food and must obtain energy from external sources are called heterotrophs.

The correct option is b. Heterotrophs

You can learn more about heterotrophs at

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High school students can automatically earn college credit by passing _____ courses.A. honors
B. IB
C. dual enrollment
D. AP

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dual enrollment - apex

Sieve tubes are found in which vascular tissue?

Answers

Hello there.

Sieve tubes are found in which vascular tissue?

phloem tissue

A root is absorbing water from the soil. Which route will the water travel inside the root? A. Cambium --> phloem --> xylem --> stele --> endodermis --> cortex --> epidermis/// B. Xylem --> phloem --> endodermis --> stele --> epidermis --> cortex --> cambium ///C. Epidermis --> cortex --> endodermis --> stele --> xylem --> phloem --> cambium

Answers

The router through which water will travel inside the root is Xylem --> phloem --> endodermis --> stele --> epidermis --> cortex --> cambium. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer you were looking for and it has helped you.

Answer:

Option B, Xylem --> phloem --> endodermis --> stele --> epidermis --> cortex --> cambium ///

Explanation:

The start of water transportation via roots takes place through the Xylem as these are the specialized cell in roots to intake water from the ground. These cells are arranged in the form of layer and filters the water before transporting. After the filtration in Xylem, water then passes to phloem (which are also part of conducting system of plants and runs parallel to the xylem). After the phloem,  water then goes to the central part of the root which is known as stele and then it reaches the epidermis. From epidermis , absorbed water then goes to the cortex of other tissues and organ and finally it  reaches the cambium.

Hence, option B is correct