Plz help I will give brainliest

Answer:

Explanation:

Missing breakfast because:

breakfast is the most important meal of the day.

Not exercising:

If you don't exercise, you will become fat and a couch potato

Not drinking enough water:

You will become dehydrated

Eating late at night:

you will become really fat.

Answer:

The acceleration of the box across the floor is 7.0588 [tex]m/s^2[/tex]

Explanation:

Given:

Mass of the box =  2550 gram

net force  acting on the box   =  18 .0 N.

To Find:

The acceleration of the box across the floor = ?

Solution:

Newton's 2nd Law of Motion states that the acceleration of an object as produced by a net force is "directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. "

Newton's Second Law formula is

F = m a

Where:

 F = the magnitude of the net force, in N

 m = the mass of the object, in Kilogram

 a = the acceleration of the object, in [tex]m/s^2[/tex]

Now substituting the values, we get

18.0 =  a (2.55)     [since 2550 gram = 2.55 kg]

[tex]a = \frac{18.0}{2.55}[/tex]

a =  7.0588 [tex]m/s^2[/tex]

Your body is composed of microscopic cells that are visible all the time ?True or false

Our body is composed of many microscopic cells. They are visible as a whole, but not individually. And all cells are not visible from outside. So the given statement is false.

Cells are defined as structural and functional unit of a living organism. Cells are of various shapes and sizes. A squamous epithelium cell is flat whereas a neuron is upto 1 meter in length. Cells of bronchus have projections called cilia whereas cells of small intestine have microvilli on their surface.

Our skin is formed of epithelial cells which are seen as a whole with our naked eyes. But individual structures of them are very small. This is why, human cells are microscopic in structure and not individually seen with naked eyes.

Answer:

Down syndrome, which results from having the wrong number of chromosomes

Explanation:

Down's syndrome is a specific type of genetic defect in which a person has three copies of the twenty-first chromosome. Scientists can now determine whether a fetus has the extra chromosome—and thus Down's Syndrome—by creating a karyotype like the one pictured here.

Screening for genetic diseases that involve mutations in the construction of the genes instead of the number of genes may not be as straightforward.

Explanation:

Photosynthesis produces glucose and O2 from inorganic CO2, light energy and water.

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

These end products, namely O2 and glucose are then used in respiration...

C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

The CO2 and H2O produced as waste in respiration can then be incorporated at the beginning of photosynthesis. Thus the reactions are cyclic- they feed into each other.

Further Explanation:

Photosynthesis

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. This occurs in the thykaloids, where pigment molecules like chlorophyll reside.

Occuring in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II.

Additionally,

Aerobic respiration

In respiration, energy is released when a phosphate group is removed from ATP; ATP is formed from the phosphorylation of ADP with an inorganic phosphate, Pi, which forms an unstable, high energy phosphate bond.

ADP + inorganic phosphate (Pi) + energy → ATP

Further Explanation:

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate through the process of glycolysis in the cytoplasm).

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water in a process called chemiosmosis.

Anaerobic respiration

Anaerobic respiration utilizes pyruvate from glycolysis in order to restore the NAD+ supply . Within cells, aerobic respiration may not occur due to several factors:

Thus, they utilize other means for the generation of energy in the form of ATP and to replenish NAD+ an oxidized form of NADH, the main electron carrier in glycolysis. Pyruvate is produced in the cytoplasm via glycolysis- it is also used as an electron acceptor in a process called fermentation.

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Answer: above is right awnser

Explanation:

Answer:

some cells in the system may be different from the other cells in the system but all cells are coordinated and work together

Explanation:

The initial structural and functional entity of an organism is called a cell. They are essential for survival as it acts as the core for various processes.

The correct statement about the cell is:

Some cells in the organism may vary from other cells in the body, but all cells are harmonized and operate together.

This can be explained as:

Therefore, cells work coordinately to perform functions in the system.

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Answer:

The correct answer is beginning of cell mitosis.

Explanation:

Cyclins are cell cycle regulatory protein which regulates the catalytic activity of cyclin dependent protein kinase or CDK.From the name cyclin dependent protein kinase it can be concluded that CDK helps in the phosphorylation of key proteins of cell cycle.

  The combination of cyclin with CDK helps in the progression of cell from one phase to another.

  Such as cyclin A CDK 2 helps also called G1 cyclin CDK helps in progression of cell from G1 to S phase whereas Cyclin B CDK 1 or M cyclin CDK helps in beginning of mitosis phase or M phase of the regulated cell.

It was originally Felis Tigris, but in 1929, a British taxonomist used Panthera tigris

Answer:

Phenotype

Explanation:

The physical trait which is the color of the fur is associated with its genotype

Answer:

The color of the fur is the ✔ phenotype

The genetic combination of alleles that determine the fur color is called the

✔ genotype

Suppose that a mouse with black fur has both an allele for black fur and an allele for white fur (Bb). Based on this information, you can conclude that the dominant allele must be for ✔ black fur and the recessive allele must be for

✔ white fur.

For this lab, assume that the allele for black fur is dominant. This allele’s symbol is ✔ B

The allele for white fur is recessive. This allele’s symbol is ✔ b

Explanation:

right on edg..

Answer:

(a) Red coloured flowers

(b) White coloured flowers

(c) Pink coloured flowers

The phenotype of a plant with genotype RR will be red colored flower, the phenotype of a plant with the genotype WW will be white colored flower, and the phenotype of a plant with the genotype RW will be pink colored flower.

Incomplete dominance is a type of gene interaction in which both the alleles of a gene at a particular locus are partially expressed in the organism, which results in an intermediate or different phenotype from the parent phenotype. Incomplete dominance is also known as partial dominance.

An example of incomplete dominance is the flower color in Mirabilis jalapa. In this plant, the red flower is the dominant character and the white flower is recessive character. However, when both the alleles are present in an offspring this results into intermediate phenotype due to partial dominance. The genotype of the snapdragon plant with RR corresponds to red colored flower, the genotype WW corresponds to white colored flower, whereas the genotype RW corresponds to pink colored flower.

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The appearance of banded iron layers in the rock record between 1.08 and 3.8 billion years ago reflect the alteration of oxygen-rich and oxygen-poor conditions in the ocean at that time is True.

Explanation:

The banded iron formation of the rock is directly related with the atmospheric oxygen content of that time. The thorough study by the scientists revealed an interesting result. The study showed that about 3 billion years ago, in Canada, there were no oxygen in atmosphere or ocean as well.

This resulted in the increase of the photosynthesizing organisms. The chemicals released from the organisms reacted to the iron of the ocean to deposit iron oxide layer on rocks to form these layers.  

Answer:

A. a = 25 N

B. b = 20 N

C. c = 5 Kg

D. d = 5 [tex]m/s^{2}[/tex]

E. e = 4 Kg

F. f = 25 [tex]m/s^{2}[/tex]

Explanation:

Second Law of Motion : It states that force is directly proportional to rate of change of momentum in the absence of any external unbalanced force .

Force is equal to product of mass and acceleration.

[tex]Force = mass\times acceleration[/tex]

[tex]F(N) = M(Kg)\times a(m/s^{s})[/tex]

A.

Use [tex]F = mass\times a[/tex], here m= 5.0 Kg and a = 5.0[tex]m/s^{2}[/tex]

[tex]F = 5.0\times 5.0[/tex]

F = 25 N

B.Use [tex]F = mass\times a[/tex], here m =2.0 Kg and a = 10[tex]m/s^{2}[/tex]

[tex]F = 2.0\times 10.0[/tex]

F = 20 N

C.

Use [tex]m =\frac{F}{a}[/tex] , here F = 10.0 N and a = 2.0[tex]m/s^{2}[/tex]

[tex]m =\frac{10}{5}[/tex]

m = 5 Kg

D.

Use [tex]a =\frac{F}{m}[/tex] , here F = 50.0 N and m = 10.0 Kg

[tex]a =\frac{50}{10}[/tex]

a = 5[tex]m/s^{2}[/tex]

E.

Use [tex]m =\frac{F}{a}[/tex] , here F = 100.0 N and a = 25[tex]m/s^{2}[/tex]

[tex]m =\frac{100}{25}[/tex]

m = 4 Kg

F.

Use [tex]a =\frac{F}{m}[/tex] , here F = 1000.0 N and m = 40.0 Kg

[tex]a =\frac{1000}{40}[/tex]

a = 25[tex]m/s^{2}[/tex]

Answer:

A dominant trait can be described as a trait that suppresses the effect of a recessive trait. A recessive trait gets masked by a dominant trait.

In the scenario depicted in the question, there will be no chance that the offspring produced will carry the recessive trait of the mother. And there will be no chance that any of the offspring born will be homozygous for the trait. All of the offsprings produced from this cross will be heterozygous dominant.

Answer: See attachment

Explanation:

Temperature

As you increase the temperature, the rate of reaction increases. This is because particles move more quickly at a higher temperature, increasing their chances of colliding and engaging in a chemical reaction!  

The reason it isn't a straight diagonal line is because a certain amount of energy is required before the reaction can begin (i.e. a minimum temperature). The peak represents the optimum condition for an enzyme to perform its functions in. However, if the reaction temperature is too high, the enzyme is denatured and destroyed, so the reaction rate drops.

pH

Enzymes tend to have an "optimum" pH at which they work best. At the optimum pH, the enzymes can successfully perform their functions, outside this range, their efficiency can drop, and at extremes could become denatured.

Bombyx mori is the name

Answer:

Bombyx mori

Explanation:

Answer:

The correct option is B) Nutrients

Explanation:

The availability of nutrients is very essential for a producer to survive. If nutrients will not be available, then the plant will not be able to carry out the essential processes which are required for its healthy living. The primary producers like plants take up nutrients from the soil.

Although, temperature and altitude also have an effect on the primary productivity but they can maintain homeostasis and hence these features will not affect that plant as much as the availability of nutrients.

Answer:

The correct answer is 'D'. Great white sharks have sharp serrated teeth for tearing into their prey.

Explanation:

Living organisms inhabit different habitats. They possess unique structures which help them perform specific functions. They maybe adapted or they are born with it. Sharks are carnivorous animals who feed on other animals. They have sharp pointy teeth which helps them to tear the flesh of their prey. Some other examples of animals are:

Answer:

Griffith called the process transformation because the harmless bacteria had been transformed. So the answer is 'C'.

Explanation:

Griffith performed an experiment on the mouse in which he worked on two different strains of streptococcus. One of the strain  was capable of causing disease (virulent) III-S and the other was a rough strain which was non virulent type II-R. He injected different combinations of the strains. The heat killed smooth strain became non virulent.

The most important discovery he made was that when heat killed smooth strain and rough strain were introduced together in the mice and the mice died. It happened because the rough strain of bacteria transformed into virulent form as the DNA from heat killed smooth strain was imbibed by the rough strain which converted into virulent form.

The symbiotic relationship in this situation is: Predation

Symbiosis or Symbiotic relationship is the relationship or interaction between two biological creatures. These interactions are essential to keep a balance in the ecosystem. Predation is one of the types of symbiotic relationship in which one biological creature preys on the other.

In predation, one biological creature benefits from another while the other is harmed or most likely killed in the process. The predator remains less wounded or completely unharmed depending on the type of prey it is. Hence, we can say that the symbiotic relationship in this situation where the polar bear his hunting and capturing a seal for food is Predation. The polar bear gets its food while the seal is killed for it.

Answer:

2. transplanting a human organ into another individual

3. inserting genes from one sheep into another cell to make a clone

Explanation:

The advancement of technology has allowed several phenomena to be observed and tested, promoting a rapid advance of scientific knowledge and improving our lives in several different ways.

It would be impossible for scientific knowledge to reach that point that we know today without the advancement of technology allowing this.

Two great examples of how this happened are the possibility of transplanting a human organ into another individual and the possibility of inserting genes from a sheep into another cell to form a clone. The advanced technology allowed several equipments to be created allowing several studies to be carried out, making the two examples above a real fact in our universe.

The student is actually doing replication

Answer: Option B

Explanation:

A student reads about a particular experiment, gets inquisitive to learn more and hence tries to copy that particular experiment. This is called as replication   as the student tries the same methodology and process adapted to perform the experiment. He tries to obtain the same result.

This result fascinates him giving assurance of the experiment. It also helps motivate trying different experiments.  It also inspires him to make further researches.

Answer:

Breaking down of sugar in living organism requires Oxygen gas.

Explanation:

The gas oxygen is important to conduct different functions in living organism. For breaking sugar inside the living organisms oxygen is needed, this is the process of the cellular respiration. The body cell breaks sugar with the help of oxygen gas in this process. As a result of this process, energy is produced along with the carbon dioxide. This energy produced in this process is restored by the body for the future use of the cell.

Answer:

I think it's A

Explanation:

Answer:

A single cell organism extends its cytoplasm around its desired particle and bring the particle inside of itself. The cell consuming the particle this 'cell eating' is known as PHAGOCYTOSIS

Explanation:

Single celled organism amoeba  don't have well developed digestion system as higher animals. They use their cytoplasm for these functions to perform.

PHAGOCYTOSIS-  By this process some cells eat/engulf their food or required particle. When any food particle is present near the amoeba. amoeba extends its plasma membrane with cytoplasm around the particle and trap the particle in a new vacuole. For digestion lysosomes fused with the vacuole containing  food particle and enzymes secreted to the vacuole and this way food particle digested.

PINOCYTOSIS-In pinocytosis cell wrap arround the liquid droplet instead of solid food particle. Cell extends its cytoplasm to engulf the liquid.

EXOCYTOSIS- This is the process to secrete the waste material out from the body after digestion. This is the excretion system of amoeba. In this process vesicles form containing waste of the cell and cytoplasm move in this way away from the vesicle and reached on the surface of membrane. In this way vesicles discharge on the outer membrane.

Answer:

B. Putting the bacterium through a mass spectrometer.

Explanation:

FOR OBSERVATION AND TO CHECK THE RECOMBINANT DNA PROCESS WE HAVE TO THE OBSERVE THE REPLICATION PROCESS OF BACTERIA.

The process that should be used next, putting the bacterium through a mass spectrometer. The correct option is B.

A bacterium is a single form of bacteria. Bacteria is a prokaryotic organism. It is a unicellular and a microorganism. Bacteria are currently used in growing specific genes by growing them in and the genes are then transferred to the needed place.

A mass spectrometer is an instrument used to measure the mass to charge of the samples.

Thus, the correct option is B. Putting the bacterium through a mass spectrometer.

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Answer:

Prokaryotic cells reproduce by a process that is called binary fission.

Explanation:

The DNA in such cells is contained in a single circular chromosome called a plasmid within the cytoplasm. The reproductive process starts with the replication of the chromosome.

Answer:Prokaryotic cells reproduce by a process called binary fission.

Explanation:

these cells contain a single circular chromosome called a plasmid within the cytoplasm so,the reproductive process starts with the replication of the chromosome.

Option A. Bacteria.

Result: Among the given choices bacteria was most similar to first living things on earth.

Answer:

Electrons, protons, and Neutrons

Explanation:

Neutrons-Neutral charge

Protons-Positive charge

Electrons-Negative charge

Keep in mind that Protons and neutrons are found in the nucleus of the atom, while electrons are found in the electron cloud.

Both protons and neutrons have a mass of 1, while electrons have no mass.

Answer:

D

Explanation:

ospreys decomposers

Answer:

The higher frequency sound, you can see that the waves are close together and the wavelength is short

Explanation:

This is because of the fact, the wavelength and the waves are inversely proportional to the frequency of sound. That's why, greater the frequency the more closer the waves and also the greater the frequency shorter the wavelength. Usually the speed of the sound may vary from medium to medium, but the frequency always remains constant as it is just like oscillation having frequency of original source. The frequency depends upon four factor like length, diameter, tension as  well as density.