How do biological systems respond when acids or bases are added?



Biological systems do not experience any changes in pH.

Biological systems do not experience any changes in pH.


Cells produce different molecules that can function at the new pH levels.

Cells produce different molecules that can function at the new pH levels.


Most biological molecules can function at any pH value.

Most biological molecules can function at any pH value.


They have substances that counteract acids or bases to prevent the pH from changing.

The example of role strain in the given ones is "Becca returns to work after giving birth to her daughter, finding it difficult to act as mother, wife, and executive." The correct option is D.

Role strain is a strain that someone feels when they are assigned to a single role that requires them to perform multiple functions.

For example, Becca has given birth, but her role requires her to be a wife, mother, and executive.

All of these roles have responsibilities that she must fulfill, which can be very taxing and stressful on one person, resulting in role strain.

Thus, the correct option is D.

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Answer:

The differences between Mitosis and meiosis is Mitosis involves the division of body cells, while meiosis involves the division of sex cells. The division of a cell occurs once in mitosis but twice in meiosis. Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis

Answer:

Hope this helps!

Explanation:

Brainliest please?

Answer:

lame answer

Explanation:

Answer:

A sexual norm can refer to a personal or a social norm. Most cultures have social norms regarding sexuality, and define normal .

Explanation:

hope this helps

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Answer:

This question is incomplete

Explanation:

This question appear incomplete because of the absence of options. However, the sympthetic nervous system is one of the two main distinct divisions of the autonomic nervous system. The sympathetic nervous system is also distinctly organized with two classes of neurons; some have there soma (cell bodies) within the spinal cord while some have there soma outside of the central nervous system in the ganglia.

Neurons are specialized cells responsible for transmitting information to some nerve cells, muscle cell and/or gland cells.

The remora (Echineidae), which travels alongside sharks and other fish, is a commensal. Remoras have developed a flat, oval sucking disc structure on the surface of heads that clings to the body of their victims.

Commensalism is most simply defined as a type of relationship wherein one organism benefits the other neither benefits nor is harmed. Phoresy, metabiosis, & inquilinism are the three main types of commensalism.

Etymology. The word "commensalism" is derived from "commensal," and that in human interactions means "eating at a single table," & which itself has been derived via French from the Medieval Roman term "commensalis," that means "sharing a desk," from either the prefix ing, which implies "together," & mensa, which means "table" or "meal."

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Answer:

B.

Explanation:

Barnacles ride on a gray whale’s back to obtain food, and the whale is not harmed.

For an organism that has 18 chromosomes in its body cells and its sex cells have 9 chromosomes, the correct statement is C, Its sex cells are haploid and a result of meiosis.

Haploid cells have half the number of chromosomes as diploid cells. Mitosis is a type of cell division that produces two identical daughter cells. Meiosis is a type of cell division that produces four daughter cells, each with half the number of chromosomes as the parent cell.

In the organism described, the body cells are diploid (18 chromosomes) and the sex cells are haploid (9 chromosomes). This is because the sex cells are produced by meiosis, which is a type of cell division that reduces the number of chromosomes by half. This allows the sex cells to combine with each other to form a new diploid cell, which is the beginning of a new organism.

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Complete question:

An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.

Which statement correctly explains this?

Its body cells are haploid and a result of mitosis.

Its sex cells are diploid and a result of mitosis.

Its sex cells are haploid and a result of meiosis.

Its body cells are diploid and a result of meiosis.

The "exfoliation" or "shedding" of milk teeth is the name of the procedure.

The primary and permanent tooth sets make up the human dentition. Maxillary (upper) and Mandibular (lower) are the two opposing arches in which teeth are arranged. These can be split into their left and right halves along the midline (mid-sagittal plane).

Four Different Teeth Types and Their Purposes

The majority of individuals have 32 permanent adult teeth, which can be classified into four groups:

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Explanation:

The molar mass of iron(III) chloride is 162.204 g/mol.

The molar mass of the chemical FeCI3 is  162.20 g/mol. Molar mass is the mass of one mole of a substance.

The molar mass represents the mass of one mole of a substance. It is measured in grams, per mole (g/mol). The mole, which serves as a unit of measurement helps in counting the number of atoms, molecules or ions, in a substance.

In the case of FeCl3, we have one iron atom (Fe) and three chlorine atoms (Cl).

The atomic mass of iron is 55.845 g/mol while the atomic mass of chlorine is 35.453 g/mol.

Thus to calculate the mass of FeCl3 we add up the products of the masses and their respective quantities:

Molar mass of FeCl3 = (1 x 55.845 g/mol) + (3 x 35.453 g/mol) = 162.20 g/mol

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Their movement will require the input of energy. That is option B.

An active transport is defined as the movement of molecules across the cell membrane from different compartments in the living organism.

The active transport makes use of energy because of the need to move molecules from a semi permeable membrane that is against a concentration gradient.

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The part of the hose reel system that best represents a DNA molecule would be option D: a specific section of the hose.

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Answer:

D. A specific section of the hose

Explanation:

test approved

The  labels of the diagram to identify the components of the autonomic nervous system is given in the image attached.

Visceral effectors: ( top down)

1. smooth muscle

2. glands.

3. cardiac muscle

4. Adipocytes

Top middle to bottom middle

1. visceral motor nuclei in hypothalamus

2. autonomic ganglia

3. ganglionic neurons

4. preganglionic neuron

Top right to bottom right

1. autonomic nuclei in brain stem

2. autonomic nuclei in spinal cord.

All "automatic" bodily processes, including breathing, heart rate, blood pressure, sweating, salivation, and the passage of food through the intestines, are under the direction of the autonomic nerve system (peristalsis).

Skeletal muscles are the only organs not under the direction of the autonomic nervous system. Skeletal muscles can be actively controlled, unlike autonomic nervous system organs like the heart, kidneys, and liver.

Therefore, the peripheral nervous system's autonomic nervous system controls physiological functions that are carried out automatically, such as digestion, blood pressure, respiration, and sexual desire. There are three physically separate divisions in it: enteric, parasympathetic, and sympathetic.

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Answer:

rotational motion

Explanation:

If the energy in the alfalfa is 1200 KJ, 12 KJ of energy the Coyote get in this food chain.

Only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next level while on the other hand, the remaining 90 percent energy is released in the atmosphere in the form of heat energy. In this example, the white tailed deer gets  120 KJ of energy from eating of alfalfa grass and the coyote gets  12 KJ of energy from eating of white tailed deer.

So we can conclude that If the energy in the alfalfa is 1200 KJ, 12 KJ of energy the Coyote get in this food chain.

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Answer:

A very small circle

Explanation:

Answer:

The most accurate measurement yet of the shape of the electron has shown it to be almost perfectly spherical. Electrons are negatively charged elementary particles that orbit the nuclei of atoms.

Explanation:

Answer:

"Matter" it has mass and it takes up space.

Answer:

matter is anything that has mass and takes up space

Explanation:

DNA contains the instructions for an needed for an organism to develop, survive, and reproduce.

Answer:

The correct option is B. a single proton.

Explanation:

During intermediate stages of photosynthesis, water molecules are broken down releasing oxygen (O₂), hydrogen ions (H⁺) and electrons. Hydrogen ions and electrons are used in subsequent stages.

The produced hydrogen ions (H⁺) are composed by only a proton, without electrons. These positive ions are formed when a neutral hydrogen atom (H, with 1 proton and 1 electron) loses its single electron.

Therefore, the correct option is B. a single proton.

a. The 4-acre field will support a total of 200 g foxes at any given time.

b. The pyramid is attached.

a. To calculate the number of foxes that the field could support at any given time, we need to work our way up the food chain, starting with the mallow plants:

200 kg of mallow plants x 10% = 20 kg available to painted lady butterflies

20 kg of painted lady butterflies x 10% = 2 kg available to phoebes

2 kg of phoebes x 10% = 0.2 kg available to foxes

Now to convert kg to g to make the calculations easier:

200 kg = 200,000 g of mallow plants

0.1 g per painted lady butterfly x 20 kg of painted lady butterflies = 2000 g = 2 kg

48 g per phoebe x 2 kg of phoebes = 96,000 g = 96 kg

1000 g per fox x 0.2 kg of foxes = 200 g

Therefore, the 4-acre field could support approximately 200 g of foxes at any given time.

b. The biomass pyramid diagram is attached below.

To convert from kg per acre to g per square meter, multiply by a factor of 24.711 (since there are approximately 4046.86 square meters in an acre).

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Answer:

Explanation:

1. Collect cheek cells

2. Burst cells open to release DNA

3. Isolate concentrated DNA

4. Separate DNA from proteins and debris

Organized patterns, irrigation systems, specific crop varieties, and agricultural practices indicate human intervention in vegetation growth, suggesting farming activity.

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In terms of genetics and genomics, cloning refers to the use of scientific techniques to create exact or nearly exact duplicates of an organism, cell, or DNA sequence.

Thus,  In most cases, the term "molecular cloning" refers to isolating and duplicating a specific DNA segment of interest for future research.

The term "cloning" refers to a laboratory procedure that creates millions or even billions of copies of a single molecule, most frequently DNA. In contrast to how the terms cellular cloning and organism cloning are used in reproductive genetics, this is not cloning.

We can investigate the molecules in the lab by amplifying or creating numerous copies of the DNA using molecular cloning.

Thus, In terms of genetics and genomics, cloning refers to the use of scientific techniques to create exact or nearly exact duplicates of an organism, cell, or DNA sequence.

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Answer:D) I know my hand is in ice but I cannot feel any pain

Explanation:

I took the quiz

Answer:

1. lactose intolerant

2. lactase

3. dairy products

4. e.coli

5. enzymes

6. protein

7. repressor

8. operator

9. rna polymerase

10. transcribe

11. bases

12. repressor

13. operator

14. transcription

Answer:

Reduced biodiversity

Explanation:

took the test

Trees use carbon dioxide during photosynthesis and release oxigen. This process allow trees to store carbon in their trunks, roots and in the soil.

When trees are cut down the process of photosynthesis stops and the carbon that was stored is released as carbon dioxide.

The carbon dioxide that is released stays in the atmosphere and is considered a greenhouse gas.

The reson why global temperature rises as a result of the increase in carbon dioxide is that when sunlight reaches the earth the surface absorbes it and then it reradiates it as infrared waves.

These infrared waves travel to the atmosphere where they interact with the carbon dioxide present (they do not interact with oxigen or nitrogen).

As a result of the carbon dioxide interaction some of the infrared energy goes back to the earth contributing to the rise in temperature. This process is known as the greenhouse effect.

To conclude, when trees are cut down on a massive scale they release a huge amount of carbon dioxide. This gas later interact with the infrared waves coming from the earth and help to keep it, preventing it to escape through the atmosphere. As a result the global temperature rises.

When a stationary object begins moving, the kinetic energy is converted to potential energy. Thus, option B is correct.

As we know that the toy is pressed against the spring initially,

so the energy is stored inside the spring

this energy is given by

here we have

k = spring constant

x = compression in spring

when this toy is released then it is projected up by the spring with certain speed,

so here we can say that energy is converted into kinetic energy.

Potential energy has been the energy possessed by an object due to its height, position or arrangement whereas kinetic energy is the energy possessed by an object due to its motion. A sum total of potential energy and kinetic energy of an object is equal to its mechanical energy.

Therefore, When a stationary object begins moving, the kinetic energy is converted to potential energy. Thus, option B is correct.

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