3. What happens when a cell is subjected to a solution where the water concentration is equal to that inside the cell (isotonic solution)?
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Answer:

An enzyme attracts substrates to it's active site, catalyzesthe chemical reaction by which products are formed and then allows the products to Daso create separate from the enzyme surface the combination formula by an enzyme and its abstract is is called the enzyme substrate complex.

The correct answer is ATP releases energy as a phosphate bond is broken.

ATP (adenosine triphosphate) is converted into ADP (adenosine diphosphate) when a phosphate group is removed from ATP, resulting in the release of energy. This process is known as hydrolysis, where water molecules are used to break the bond between the terminal phosphate group and the rest of the molecule.

During cellular metabolism, ATP serves as the primary energy currency of the cell. When energy is required for various cellular processes, the phosphate bond in ATP is broken by an enzyme called ATPase. This enzymatic hydrolysis reaction cleaves off one of the phosphate groups, resulting in the formation of ADP and an inorganic phosphate molecule (Pi). The released phosphate group is then available to be used in other cellular reactions.

The conversion of ATP to ADP is an essential part of energy metabolism in cells. The energy released during this process is utilized to drive various cellular activities, such as muscle contraction, active transport of molecules across cell membranes, and synthesis of macromolecules. Once ATP is converted to ADP, it can be further hydrolyzed to AMP (adenosine monophosphate) if more energy is needed. Ultimately, the energy stored in ATP is released when the phosphate bond is broken, allowing cells to perform their vital functions.

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Answer:

Nutrient

Explanation:

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Answer:

cockroach have joint legs while in earthworm legs are absent. 4. cockroach have a ventral nerve cord while earthworm have central nerve co

Answer:

The age difference between the oldest and the youngest is 48.

Explanation:

Given the following data;

The ratio of the ages of Kisii (K) and Esinam (E) is 3:5.

The ratio of the ages of Esinam (E) and Larry (L) is 3:5.

The sum of the ages of all three is 147.

Since the age of Esinam is common in both ratios, we find the lowest common multiple (LCM);

LCM of 3,5 = 15.

Hence, the ratio of the three ages is now;

K:E:L = 9:15:25

Let their ages be denoted by x;

\(K:E:L = 9x:15x:25x\)

The sum of all three ages is;

9x + 15x + 25x = 147

49x = 147

x = 147/49

x = 3.

To find the age difference between the oldest and the youngest;

The oldest is Esinam = 25x

The youngest is Kisii = 9x

Therefore, 25x - 9x = 16x

Substituting the value of x, we have;

x = 3; 16x = 16(3) = 48.

The age difference between the oldest and the youngest is 48.

Answer:

cotton

Explanation:

Cotton crop leaves soil with the lowest levels of nitrogen.

Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System.

Nitrogen is important to the chemical industry. It is used to make fertilizers, nitric acid, nylon, dyes and explosives. To make these products, nitrogen must first be reacted with hydrogen to produce ammonia. This is done by the Haber process.

Nitrogen is important to all living things, including us. It plays a key role in plant growth: too little nitrogen and plants cannot thrive, leading to low crop yields; but too much nitrogen can be toxic to plants [1]. Nitrogen is necessary for our food supply, but excess nitrogen can harm the environment.

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mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.

in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.

hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.

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Answer:

Being Passive in the Kidney. Firstly, small soluable molecules can passively diffuse into the liquid in Bowman's Capsule from the Glomerulus. These molecules are usually molecules of glucose, urea, salts and water and diffuse from the capillaries into the solution of plasma without the use of energy.

Explanation:

have good day

Answer:

Chlorofluorocarbons (CFCs) and other halogenated ozone-depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).

To support photosynthesis and maintain a healthy ecosystem, it would be best to bring blue and red light bulbs with you to the space station.

If the space station uses photosynthesis to provide oxygen, then it most likely has plants or algae that require specific wavelengths of light to carry out the process. Chlorophyll, the pigment responsible for photosynthesis, absorbs light most efficiently in the blue and red parts of the visible light spectrum, while reflecting green light.

Therefore, to support photosynthesis and maintain a healthy ecosystem, it would be best to bring blue and red light bulbs with you to the space station. Blue light is needed for the initial process of photosynthesis, while red light is necessary for the final stages. Green light, on the other hand, is not as efficient in promoting photosynthesis and may even hinder the process by competing with blue and red light for absorption by chlorophyll.

It is important to note that the specific wavelengths of light needed for photosynthesis may vary depending on the type of plants or algae present in the space station. Therefore, it may be best to consult with the space station's horticulturist or plant biologist to determine the optimal light conditions for the specific plant species present.

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Protein entry into the ER lumen is facilitated by signal sequences present in the proteins whereas transmembrane protein integration into the ER membrane requires transmembrane domains.

Protein entry into the ER lumen (or insertion into the ER membrane) and integration of transmembrane proteins into the ER membrane differ in their mechanism. The following is a description of the differences between these two mechanisms.

Protein entry into the ER lumen is facilitated by signal sequences present in the proteins. Signal sequences, or signal peptides, are short stretches of amino acids located at the N-terminal end of proteins that are destined for the ER lumen or secreted outside the cell. Signal sequences interact with signal recognition particles (SRP), which then transport the protein to the ER membrane. Afterward, the SRP binds to the SRP receptor, and the protein is translocated into the ER lumen. The nascent protein is then translated, modified, and folded in the ER lumen.In contrast to protein entry into the ER lumen, transmembrane protein integration into the ER membrane requires transmembrane domains.

Transmembrane domains are composed of hydrophobic amino acids that cross the hydrophobic lipid bilayer of the membrane. Transmembrane proteins are inserted into the ER membrane through two mechanisms: The first mechanism is the signal anchor sequence, where a stop-transfer anchor sequence retains the protein in the membrane. The second mechanism is the signal peptide cleavage, where signal peptides in the protein cleave after they enter the ER lumen, and the transmembrane domain remains in the membrane. The protein is then translated and folded in the membrane.

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This is the step of constructing a hypothesis.

Hypothesis can be defined as an educated guess based on observation from different sources or from past evidences and prior knowledge, these observation can go through a number of tests to prove or disprove.

Hypothesis testing can give rise to a phenomena or theory after doing experiment, if it is accepted an the theory must be a  principle or a group of principles which gives a scientific phenomenon.

Before going to proof or discover any phenomena or to solve any question, there are various steps are followed such a ask a question, make observation, formulate hypothesis, design an experiment to test the hypothesis, result, data analysis, conclusion.  

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Answer:

A population is a collection of people belonging to the same species who are present in the same location at the same time and carry out similar functions. For instance, the population of humans is made up of all people who are present at a specific location and time.

A community is described as a collection of people from various species that reside in a specific geographic location. These individuals can be alike or different, but they are unable to procreate with those of other species.

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ABC transport systems are the transport system best suited for the transport of nutrients which are present at extremely low levels in environment. Thus, the correct option is D.

ABC transporter are the ATP-binding cassette transporters. It is a type of active transport as energy is required. ATP-binding cassette (ABC) transporter is a large superfamily of membrane proteins with diverse functions. They can use the energy gained from ATP hydrolysis for the trans-bilayer movement of substrates either into the cytoplasm or out of the cytoplasm.

As this transport system has periplasmic binding proteins which can be specialized in picking up the specific nutrients with the help of ATP, even at very low concentrations. This system can be used for transport of rare nutrients in cells.

Therefore, the correct option is D.

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

Which transport system is best suited for transport of nutrients present at extremely low levels and why?

A. secondary transport

B. translocase

C. phosphotransferase

D. abc transport

E. simple PMF transport

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Answer:

Answer: Option A and B.

Organ system and tissues.

Explanation:

The earthworm is a segmented worm that belongs to the phylum annelids. The earthworm has a close circulatory system just as human beings which means their blood circulates through a closed network of vessels which are connective tissues. The earthworm has a structure of 5 hearts and they are called aortic arches which are organ systems. These pump blood into a network of vessels and its flows through the body. From there, the blood moves to a dorsal blood vessel which sends blood to the front of the Earthworm, then to the ventral blood vessel which sends blood to the posterior. At the intestines, there are lateral vessels that carry nutrients away from the gut and to the body.

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Answer:

osmosis is the movement of water molecules through a semi permeable membrane from a region of higher concentration to lower concentration

Answer:

osmosis is the movement of water molecules through a semi permeable membrane from a region of higher concentration to lower concentration

Explanation:

just did the question

Answer:

breaking glucose into smaller molecules

Explanation:

Answer:

The correct answer is C. breaking glucose into smaller molecules.

Answer:

tropical rainforest i think

Explanation:

Answer:

Swamps are the most productive

Explanation:

Because it produces more bacteria and in terms of the NPP unit rate its listed as the number 1

Answer:

Hey!

I think it is the San Pedro Cactus!

Explanation:

i have one at home just like that!

HOPE THIS HELPS!!

Answer:

san pedro

Explanation:

Answer: 298.9 million years old

Explanation: hope it helps luv ❤✨

A piece of coal would be 298.9 million years old. This is because the Permian period was initiated approximately 298.9 million years ago.

The characteristics of coal are as follows:

According to ancient tomes and periods, the Permian period ends about 252.2 million years ago and it was the time of the initiation of the carboniferous period that further extends to the Triassic period. This was all about the time duration when the first piece of coal was found in the atmosphere.

Therefore, a piece of coal would be 298.9 million years old.

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The answer is option d. the web domain is a .com .

What is an evaluation of a source of information?

Evaluating sources means recognizing whether the information you read and incorporate into your research is reliable. There is a vast amount of information available both in print and online, but not all of it is valid, useful or accurate. Evaluating the sources of information to include in your text is an important step in the research process.

Here, in option d. the web domain is a .com, Domain names provide information about the types of websites you are visiting and help determine if the information you are viewing is legitimate.

This is used to create the website but is it not an informative website.

Hence, except option d. the web domain is a .com all the options are correct.

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The introduction of the spiny water flea into the lake is likely to have a negative effect on the balance of the native ecosystem, as the water fleas will compete with native fish for resources such as zooplankton, and may disrupt the existing food chain.

A water flea is an aquatic crustacean. Normally, it is a member of the order Cladocera, meaning it has a small body, two antennae, and a single shell (a carapace) over its back. Water fleas move by using the hair-like setae which are located on their legs. They are an important part of aquatic ecosystems as they are used as food by other aquatic organisms. They also help to clean up organic matter in water bodies, thus improving water quality.

A zooplankton is a microscopic or tiny aquatic animal, usually found in oceans or freshwater bodies. They are usually very small in size and typically feed on phytoplankton. Zooplankton are key components of aquatic food webs and are a vital part of the aquatic environment. They are also important for carbon cycling, filtering pollutant particles from the water, providing food for fish and other aquatic organisms, and providing a food source for larger predators.

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Answer:

This is straight forward.If  there are 60 minutes in one hour, then to convert minutes to hours as requested, simply divide the number of minutes given by  60.Thus if you divided the 59 by 60 it gives you what?round the answer to whole number.

When there is a moment of any solute present in the solution from high concentration to low concentration area is called diffusion.

It will take 0.25 hours to diffuse one crystal.

This can be calculated by:

Given,

In 1 hour there are 60 minutes.

60 minutes = 1 hour.

Then 15 minutes = ? hours

\(\dfrac{15 \; \text{minutes}}{60 \; \text{minutes}} = 0.25\)

Therefore, to diffuse one crystal of it will take 0.25 hours.

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Answer:

The correct answer is ''it leads to respiratory alkalosis.''

Explanation:

Respiratory alkalosis is defined by pH values> 7.45, and is characterized by an increase in pH and a decrease in pCO2. The most frequent cause is alveolar hyperventilation. Alveolar hyperventilation causes respiratory alkalosis, presenting a decrease in ionic calcium and in some cases tetany. To compensate for this increase in pH, renal HCO3 excretion is increased, but this process requires 24-48 hours. Respiratory alkalosis - primary or compensatory - is defined by hypocapnia, a finding that involves alveolar hypoventilation. The symptoms of acute respiratory alkalosis, the "hyperventilation syndrome," vary only in intensity from those of any alkalosis - most notably disturbances in neuromuscular function (eg, paresthesias, tetany, tremor). A constellation of symptoms have been described with respiratory alkalosis, including increased intracranial pressure, decreased consciousness, tachycardia, hypertension, carpopedal spasm, anxiety, dizziness, and a feeling of vertigo.

Answer:

DNA is in a nucleus in eukaryotes.

Explanation:

Circular DNA and smaller, transferable DNA plasmids are both found in prokaryotes.

Based on their nuclear structure, number of chromosomes, binding protein, and selective permeability, eukaryotes differ from prokaryotes in their DNA (Deoxyribose Nucleic Acid).

Answer:

1. option B

2. option A

3. option D

Explanation:

1. Which of these studies is an experimental study?

Yes, you got it right, it is study 2. Study 1 and 3 are just observational studies, where researchers collect and interpret data based on what they have seen, heard or observed. But for the experimental design, there is a manipulation on the part of the researchers where he grouped them and administered treatments.

2. Study 1 employs a retrospective design.

You also got that part right, Study 1 actually employed the retrospective design by sampling individuals and then collecting information about their past which in this case is asking questions about the participant's dietary and exercise habits between ages 15 and the present and also their medical records.

3. Study 3 employs a prospective design

You also got this right. Study 3 actually employed the prospective design by sampling individuals and follow them over time and data about them is collected as their characteristics or situations changes and in this context, they observed even after a change by sleeping more than 8 hours per night, students still did not seem to experience additional health benefits.

Answer:

D.

Explanation:

For two organisms to breed successfully and produce viable offspring that are fertile, both must belong to the same species with the same number of chromosomes.

Postzygotic barrier often occur when two organisms of different species and chromosomes numbers mate. If successful, the hybrid they produce remain sterile. This is what happens when goat with chromosome number of 60, mates with sheep with chromosome number of 54.

Postzygotic barrier is responsible for the sterility of the hybrid they produce, as a result of difference in chromosome number between sheep and goat.