1
Some plants can be grown in water using the technique of hydroponics. The roots are in water and
supplied with the ions that they need at the concentrations that support maximum growth. Some
ions can be absorbed both by diffusion and by active transport.
(a) (i) State two features of diffusion that do not apply to active transport.

Answer:

Filtrate travels down the nephron tubule - Step 2

Blood is filtered in the glomerulus and captured in Bowman’s capsule -Step 1

Urine is collected in vessels and leaves the kidneys - Step 4

Beneficial molecules and water are reabsorbed into the blood - Step 3

Explanation:

Steps of urine formation are given below.

Steps of  urine formation are:-

Hence, the correct order is 2,1,3,4.

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There are 3 types of RNA:

mRNA (Messenger RNA): This RNA is in charge to travel the genetic information from the nucleous to the ribosome, where it binds to it and give the genetic instructions for protein synthesis.

tRNA (Transfer RNA): This RNA is in charge of providing the correct amino acid to the ribosome during protein translation.

rRNA (Ribosomal RNA): This RNA are structural proteins of the ribosomes.

Answer: True

Explanation: If the dorsal root of spinal nerve is cut down, the areas of the body controlled by  the spinal nerve get out of control of CNS. The transfer of  impulses from receptor to the CNS will stop and the person suffer from numbness. The nerve will lose its functional ability and loss of sensation.

Answer:

CTAGA is best

Explanation:

C=G T=A unless in RNA when A=U and T still equals A

Answer:

u r mom

Explanation:

Answer:

B) Sea level rises as Earth becomes warmer and glaciers melt.

Answer:

My friend, the answer is to encode instructions for traits.

Answer:

During a volcanic eruption people should make sure they are prepared within their home with supplies, but also should turn off any heating or cooling within the house. Make sure all windows and doors are closed and locked. Goggles can protect your eyes from the heat and ash, try not to breath in said ash, a mask could help along with long sleeve clothes. Make sure vehicles are off to prevent them from blowing up. Seek shelter and avoid low areas.

The appropriate action would be to perform a head tilt-chin lift maneuver, assess the child's breathing, and provide 2 breaths if he is not breathing.

In a situation where a child is unresponsive after a fall, it is crucial to quickly assess their breathing and provide necessary interventions. To do so, the rescuer should perform a head tilt-chin lift maneuver, which involves tilting the child's head back and lifting the chin to open the airway. This maneuver helps to clear any obstructions and allows for effective breathing.

After performing the head tilt-chin lift maneuver, the rescuer should assess the child's breathing. If the child is not breathing or only gasping, it is necessary to provide 2 rescue breaths. The rescuer should seal their mouth around the child's mouth and nose and deliver breaths, ensuring that the chest rises with each breath.

Elevating the child's legs (option A) or placing a blanket on him is not appropriate in this situation as the primary concern is the child's unresponsiveness and breathing. Opening the child's airway by placing fingers under the jaw (option B) is part of the head tilt-chin lift maneuver, which should be performed. Leaving the child in the position and monitoring (option C) is not appropriate when the child is unresponsive and not breathing.

Remember to seek immediate medical assistance by calling emergency medical services (EMS) or activating the local emergency response system as soon as possible.

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Answer:

As an example, you are interested in how stress affects heart rate in humans. Your independent variable would be the stress and the dependent variable would be the heart rate. You can directly manipulate stress levels in your human subjects and measure how those stress levels change heart rate.

Explanation:

If a cell that is composed of 60% water is placed in a solution that is 90% water, that means that the cell is 40% solute while the solution is 10% solute.

The calculation can be made by the formula using,

Solute + Solvent = Solution

Solute- A substance that dissolves in a solution is referred to as a solute. In fluid solutions, the solvent content is greater than the quantity of solute.

Solvent- A material that can dissolve solutes, that are molecules and compounds, is referred to as a solvent.

Solution- The majority of life's chemistry takes place in aqueous solutions, or mixtures in which water acts as the solvent. A solution is a homogenous mixture of a solvent and a solute.

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Answer:

A low concentration to a high concentration till equilibrium is achieved

Explanation:

Answer:

Lactose intolerance

Explanation:

Lactose intolerance occurs when your small intestine doesn't produce enough of an enzyme (lactase) to digest milk sugar (lactose)

Answer:

60

Explanation:

70-10=60

The Giant Impact Theory is most likely to account for how the Moon formed, although there are other hypotheses as well, such as the Colliding Planetesimals Hypothesis, the Capture Hypothesis, and the Accretion Hypothesis.

The gravitational pull of the Earth, which holds the Moon in orbit, is balanced by the gravitational pull of the Moon, which pulls on our planet in turn and causes the oceans to move, forming a tidal bulge. This tidal bulge really sits just in front of the Moon because of the Earth's rotation.

A collision between the proto-Earth and a planetesimal the size of Mars occurred roughly 4.5 billion years ago in the Hadean eon, 20 million to 100 million years after the solar system originated. This collision is known as the Theia Impact or the "giant impact hypothesis."

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(1) The Moon was formed from the collision between Earth and another Mars-sized body; (2) The Moon was formed from collisions and combining of planetesimals; (3) The Moon was locked into orbit by earth's gravity as it was passing by it; (4)The Moon was formed from the same cloud of material as Earth.

The Giant Impact Theory suggests a Mars-sized object hit Earth with force, causing debris to form a disk, which eventually coalesced to form the Moon.

The Giant Impact Theory is a scientific hypothesis that explains how the Earth's moon was formed. According to this theory, the Moon was created from the debris left over after a Mars-sized body collided with the Earth about 4.5 billion years ago, shortly after the formation of the solar system. This collision caused a massive explosion and ejected a large amount of material into space, which eventually coalesced to form the Moon.

The theory is supported by various lines of evidence, such as the similarity in chemical composition between the Earth and Moon, as well as the Moon's relatively large size compared to its parent planet. The Giant Impact Theory is widely accepted by the scientific community as the most plausible explanation for the origin of the Moon.

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Access to wealth and energy for people in regions with less economic resources can be challenging but not impossible. Several strategies and approaches can help improve their access and create opportunities for economic growth. Here are some key considerations:

1. Infrastructure Development: Investing in infrastructure is crucial to provide basic services and utilities such as electricity, water, and transportation. Developing reliable infrastructure creates an enabling environment for economic activities and attracts investment to the region.

2. Renewable Energy: Promoting renewable energy sources can provide sustainable and affordable energy solutions for regions with limited access to traditional energy sources. Renewable energy technologies, such as solar and wind power, can be harnessed to provide clean and reliable energy, reducing dependence on expensive fossil fuels.

3. Microfinance and Entrepreneurship: Facilitating access to microfinance and promoting entrepreneurship can empower individuals to start small businesses and generate income. Microfinance institutions provide small loans and financial services to individuals who do not have access to traditional banking systems, enabling them to start income-generating activities.

4. Education and Skills Development: Investing in education and skills development programs is essential to empower individuals with the knowledge and skills needed to participate in the economy. By providing quality education and vocational training, people can acquire the necessary skills to access better job opportunities and contribute to economic growth.

5. Technology and Innovation: Embracing technology and innovation can leapfrog traditional barriers to development. Digital platforms and mobile technology can provide access to information, financial services, and market opportunities, empowering individuals and businesses in remote areas.

6. Supportive Policies and Governance: Governments should enact policies that promote inclusive economic growth, reduce inequality, and encourage investment in regions with less wealth. Good governance, transparency, and accountability are critical for creating an environment conducive to economic development.

7. International Cooperation and Aid: International collaboration, partnerships, and aid programs can provide financial and technical assistance to regions with limited resources. International organizations and donor agencies play a crucial role in supporting development initiatives in these areas.

It is important to note that each region has its unique challenges and opportunities, and a tailored approach is required to address the specific needs of the communities. By implementing these strategies and fostering an enabling environment, regions with less wealth can enhance access to wealth and energy, improving the lives of their people and contributing to sustainable development.

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Cassava contains less protein than other cereal grains, and the protein it does contain is of poor quality and contains relatively few important amino acids.

Large, complex proteins known as protein perform a variety of vital roles in the body. They are crucial for the structure, operation, and control of the cardiovascular and respiratory systems and carry out the majority of their job inside cells.

A vital component of a processes that give you energy and allow your blood to transport oxygen around your body is protein. Furthermore, it helps in the production of antibodies which fight against infections and diseases & stimulates the development of new cells.

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Compared to other cereal grains, cassava has a lower protein content, and the protein that is there is of poorer quality and contains fewer essential amino acids.

Is cassava a sweet potato substitute?

Despite the fact that the spelling is sometimes confused, the two are unrelated. Similar to potatoes, cassava seems to be a root vegetable which can be prepared in a variety of ways. This starchy tuber has thicker skin and the appearance of a butternut squash or yam on the outside. Cassava seems to have a neutral flavour and a tender, airy texture when cooked.

Is cassava unhealthy for You?

Although cassava has a lot of carbohydrates, it also contains a lot of fiber and a good amount of vitamins and minerals.

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A particular type of inclusion body that is used to orient bacteria in three-dimensional space in a fluid environment is a carboxysome.

In instance, cyanobacteria and other chemoautotrophic bacteria have carboxysomes, a form of inclusion body. Enzymes associated with carbon fixation, notably the enzyme RuBisCO (ribulose-1,5-bisphosphate carboxylase/oxygenase), are found in these proteinaceous compartments. It is well known that carboxysomes are essential for the cyanobacteria's photosynthesis process.

The carbon fixation process is made more effective by carboxysomes, which have a characteristic polyhedral form and are involved in the concentration of carbon dioxide (CO2) surrounding RuBisCO. In order to prevent oxygen from interfering with the activities involved in photosynthetic life, they are also in charge of maintaining the ideal level of carbon dioxide.

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organ. An organ is a physically separate body part made up of two or more different tissue types. Each organ carries out one or more distinct physiological tasks.

Anatomical structures might be microscopic or macroscopic, as an acrosome or a carpel. the investigation of an animal's or plant's structure. The organs, tissues, and cells that make up the human body as well as how they are arranged inside it are all included in human anatomy.The skeleton not only aids in movement but also plays a role in calcium storage and blood cell synthesis. Although they are not regarded to be bones, teeth are a part of the skeletal system as well.

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Answer:

A. electricity

B. it started blowing with force and with power.

C. Electricity, technology, etc.

D.

The research is on Honey Bee. See the essay below.

The honeybee undergoes complete metamorphosis, consisting of four stages  -  egg, larva, pupa, and adult. The   queen bee lays eggs in hexagonal cells of the beehive.

After a few days, the eggs hatch into larvae.

The larvae are fed royal jelly by worker bees and undergo multiple molting stages. They then enter the pupa stage, where they form a cocoon within the cell. Inside the cocoon, they undergo significant transformations and develop into adult bees.

Finally, they emerge as fully developed adult honeybees ready to perform their roles in the hive.

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The human vagina is home to a diverse population of commensal bacteria that play a crucial role in protecting the body from infections.

These bacteria work together to maintain a healthy vaginal environment by producing lactic acid, which helps to lower the pH of the vagina, making it more acidic and less hospitable to harmful pathogens. They also produce antimicrobial peptides and other substances that help to prevent the growth and spread of harmful bacteria and viruses. In addition, commensal bacteria in the vagina compete with pathogenic bacteria for resources, making it harder for them to thrive.

They play a critical role in protecting humans in several ways:

1. Producing lactic acid: Lactobacilli produce lactic acid, which helps to maintain an acidic pH in the vagina. This acidic environment inhibits the growth of harmful microorganisms, such as bacteria and fungi, that can cause infections.

2. Producing hydrogen peroxide: Some strains of lactobacilli produce hydrogen peroxide, which has antimicrobial properties and can help to prevent the growth of harmful bacteria.

3. Competing for nutrients: Commensal bacteria in the vagina can compete with harmful bacteria for nutrients and resources, preventing them from establishing themselves and causing infections.

4. Stabilizing the vaginal microbiota: Commensal bacteria can help to stabilize the composition of the vaginal microbiota, preventing shifts in the microbial balance that can increase the risk of infection.

Overall, the presence of commensal bacteria in the human vagina is essential for maintaining a healthy and functional reproductive system and protecting against infections.

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Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.

In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.

Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.

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A sensory neuron in the skin sends a signal to the spinal cord via an afferent pathway, indicating that the dog is being touched.

In general, a pathway refers to a route or a course taken to reach a particular destination or achieve a specific outcome. Pathways can be physical, such as a road or a hiking trail, or metaphorical, such as a career path or a learning pathway.

In a scientific or medical context, a pathway often refers to a series of molecular or biochemical reactions that occur within a cell or an organism to perform a specific function. These pathways can include metabolic pathways, signaling pathways, and regulatory pathways, among others.

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Let us represent the heterozygous with freckles by Ff and the homozygous with no freckles by ff. Thus, we construct the following Punnet square:

From this punnet square we see that:

50% of the offspring will be heterozygous with freckles (Ff).

50% of the offspring will be homozygous with no freckles (ff).

In incomplete dominance, a heterozygous individual expresses an intermediate phenotype between the dominant and recessive phenotypes. 250 of the offspring are expected to have white flowers.

To answer this question we will assume diallelic gene that expresses incomplete dominance.

Incomplete dominance is an inheritance pattern in which neither of the alleles completely dominates over the other allele.

In heterozygous individuals, the dominant allele can not entirely hide the expression of the recessive allele, resulting in a third phenotype.

This new phenotype is intermediate between the one expressed by the homozygous dominant and the one expressed by the homozygous recessive genotypes.

In the exposed example,

If two pink individuals are crossed,

Parentals) Rr   x   Rr

Gametes) R  r    R   r

Punnett square)   R     r

                      R    RR   Rr

                       r    Rr    rr

F1) 1/4 = 25% of the progeny will have red flowers

     2/4 = 50% of the progeny will have pink flowers

     1/4 = 25% of the progeny will have white flowers

100% of the progeny ------- 1000 individuals

25% white -----------------------X = 2500 individuals

250 of the offspring are expected to have white flowers.

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The  two statements  that describe advantages of genetic engineering are.

Genetic engineering, often known as genetic modification or genetic manipulation, is the technological modification and manipulation of an organism's DNA.

Plants can be genetically modified by inserting a certain DNA sequence into their genomes to confer new or different traits. This could entail altering the plant's growth pattern or conferring disease resistance on it.

Therefore, genetic engineering helps to improve plant species.

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Answer:

50% will have long hair!=

Explanation:

When you cross between Hh and hh, two out of four are Hh, which is long hair, and two are hh, which is short hair.

the statement above is true