How does nitrogen help plants to grow?

Answer:

ice

Explanation:

bc ice changes  a solid  to a liquid when it melts

The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.

Cells are of two types: eukaryotic, which contain a nucleus, and prokaryotic, which do not. Prokaryotes are single-celled organisms, while eukaryotes can be either single-celled or multicellular.

Answer:

Shhhhhhhhshehrhh

Explanation:

Jjshhhhhhh

Answer:

Albert Schatz

Alexander Fleming

Alice Catherine Evans

Annie Chang

Antonie Van Leeuwenhoek

Carl Woese

Carlo Urbani

Carlos Juan Finlay

Carmen Sanchez

Charles Henry Nicolle

Claire Fraser

Dmitri Ivanowski

Edward Jenner

Elizabeth Bugie

Ferdinand J. Cohn

Fredrick Sanger

George Hirst

Giralamo Fracostoro

Gregory C.B. van Neil

Hans Christian J. Gram

Harold Amos

Hattie Alexander

Howard Ricketts

Ignaz Semmelweis

Ilya Ilich Metchnikoff

Jennifer Doudna

John Snow

John Tyndall

Joseph Lister

Julius Richard Petri

Kary Mullis

Kiyoshi Shiga

Louis Pasteur

Margret Pittman

Martha Chase

Martinus Beijerinck

Max Theiler

Paul Ehrlich

Rebecca Craighill Lancefield

Robert Gallo

Ronald Ross

Ruth Ella Moore

Salvador Luria

Selman Waksman

Sergei Winogradsky

Shibasaburo Kitasato

Stanley Cohen

Thomas Brock

Walter Reed

Wendell Stanley

William Augustus Hinton

Ernest Everett

Answer:

I think there are 8 holes in a male and 9 holes in a female. Not including pores.

Explanation:

Answer:

In addition to playing this structural role, the cytoskeleton is responsible for cell movements. These include not only the movements of entire cells, but also the internal transport of organelles and other structures

Answer:

there are 8 main characteristics

Explanation:

1. hair and fur

2. mammary glands

3. single boned lower jaw

4. one time tooth replacement

5. three bones in middle ear

6. warm blooded metabolism

7. diaphragm

8. four chambered heart

Answer:

B - Posterior column pathway

The only spinal column that does not cross over as it enters the spinal cord is the posterior column. Instead, the medulla oblongata is where the posterior column transitions. Therefore, option (B) is correct.

The dorsal column–medial lemniscus pathway (DCML) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints. It is also known as the posterior column–medial lemniscus pathway, or PCML.

The only column other than the posterior one to enter the spinal cord without making a crossing is the posterior column. In its place, the posterior column makes a U-turn in the medulla oblongata.

Therefore, option (B) is the correct option.

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Answer:

some examples are in a lake, all the stray cats in a city, or all the evergreen trees in a forest. Remember, limiting factors can affect the carrying capacity. Different limiting factors, such as natural disasters or competition, can cause a population size to decrease!

Answer:

Every organism needs nutrients to build tissues and carry out life functions. Like water, nutrients pass through organisms and the environment through biogeochemical cycles. ... If ample sunlight and water are available, the primary productivity of an ecosystem may be limited by the availability of nutrients.

Explanation:

Nutrient availability is directly proportional to primary productivity.

In an ecosystem, the plants are the primary producers. They are able to trap energy directly from the sun and use it combine water and carbon dioxide in the presence of nutrients.

These nutrients are particularly important in the functioning of these primary producers. The more the available nutrients, the higher the primary productivity in an ecosystem and vice versa.

Hence, there is a direct relationship between nutrient availability relate to the primary productivity of an ecosystem.

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Answer:

Please find the explanation to this question below

Explanation:

The ATP cycle is the series of reactions involving glycolysis, Krebs cycle and oxidative phosphorylation that produces/synthesizes ATP in living cells. These processes collectively is called CELLULAR RESPIRATION. Glycolysis produces 2ATP molecules, Krebs cycle produces 2ATP while the electron transport chain (oxidative phosphorylation) produces 34ATP molecules.

This cycle of ATP as explained above is an important frequent event in cells because all organisms need energy to carry out their metabolic activities. ATP is the energy-carrying molecule that stores and releases energy for use by the cells, hence, it needs to be produced on a frequent basis.

ATP can be likened to a charged battery ready to release its stored energy. The energy is stored in the phosphate bonds that makes up its structure. When ATP releases its energy, it becomes ADP (Adenosine diphosphate). However, ADP is a reactant in the ATP cycle, which is phosphorylated with an inorganic phosphate (Pi) and catalyzes by ATP synthase to form ATP.

Answer:

thick and infertile

Explanation:

its cold

Answer:

the external stimulas of danger

Explanation:

The flight or flight is the natrual intinct when in a dangerous situation, and is everyones go to response

Answer:

c

Explanation:

Answer:

Because sound waves can also create energy.....waves also create energy so it's considered because it can be used in machines

Explanation:

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The sound waves are considered a type of mechanical energy as sound waves transfer energy by the motion of particles. The correct option is C.

Mechanical energy (kinetic energy or potential energy) is the energy of a moving object or the energy stored in objects due to their position.

Mechanical energy is another source of renewable energy. Many types of renewable energy rely on mechanical energy to generate or convert energy.

An object's mechanical energy can be the result of its motion (i.e., kinetic energy) or its stored energy of position (i.e., potential energy).

The sum of potential and kinetic energy equals the total amount of mechanical energy.

Sound waves are a type of mechanical energy because they transfer energy through particle motion.

Thus, the correct option is C.

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Your question seems incomplete, the missing options are:

Answer:

I Think...

Explanation:

Each protein has a particular structure necessary to bind with a high degree of ... Others, like titin (a protein found in muscle), are very large Organization of Protein Structure ... This single hydroxyl orientation difference does not allow galactose to bind to hexokinase and thus hexokinase exhibits specificity of binding.

Answer:

1. Chloroplast

2. 38 molecules of ATP

3. orange-red and violet-blue

4. There are half as many chromosomes in egg cells.

Explanation:

1. According to the image 1 in this question, the process of PHOTOSYNTHESIS is being described. Photosynthesis is the process whereby plant cells synthesize their food (sugar) in the presence of sunlight. CO2 and water are used as reactants, while O2 gas is released as shown in the image as gas bubbles. This unique process of photosynthesis occurs in the CHLOROPLAST organelle.

2. Cellular respiration is the way through which living organisms obtain usable energy for metabolic activities. It is the process of breaking down food substances in a series of steps. Cellular respiration occurs in three major stages viz: glycolysis, Krebs cycle and oxidative phosphorylation. Glycolysis produces pyruvate, which may enter the mitochondria for the next stages in the presence of oxygen to yield 38 molecules of ATP.

3. Image 2 shows the absorption spectrum of chlorophyll pigment. As depicted in the image, the highest absorption spectrum of the photosynthetic pigment is at the "orange-red and violet-blue" wavelength. This connotes that the energy used in photosynthesis is most likely obtained from those regions of the spectrum.

4. Meiosis is the process through which gametes are formed. In the process of meiosis, each of the gametes will contain half of the chromosome number as the parent cell. This means that the egg cell (female gamete) produced by a female will contain half as many chromosomes than the somatic or body cell that undergoes the division.

Cellular respiration is the process through which food is broken down to yield energy. It takes place in every living entity.

The correct answers are:

1. Chloroplast

2. 38 molecules of ATP

3. orange-red and violet-blue

4. There are half as many chromosomes in egg cells.

The reasons for the following are:

1. In the first image, photosynthesis is shown. It is the process of producing food in the presence of light and carbon dioxide to give out oxygen. Carbon dioxide and water are reactants, which in the presence of sunlight react and yield oxygen as a byproduct. In the image, the oxygen is given out as bubbles.

2. Cellular respiration is the process occurring in every living organism. It is a process through which organisms obtain energy by breaking down food substances. Cellular respiration involves glycolysis, Kreb's cycle, and oxidative phosphorylation to yield energy in the form of ATP.

3. Image 2 represents the absorption spectra of the chlorophyll pigment. The photosynthetic pigment has the highest absorbance at the orange-red and violet-blue wavelength. This explains that energy required to carry out photosynthesis is obtained from this region of light.

4. Meiosis is a reduction division, in which the number of chromosomes is halved from the parent to daughter cells. The parental gametes consist of half the number of chromosomes, which then fuse to form a diploid zygote. The somatic cells undergo mitotic division, in which the number of chromosomes in the parent cells is similar to the daughter cells.

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Answer:

Membrane markers allow cells to recognize one another, which is vital for cellular signaling processes that influence tissue and organ formation during early development. This marking function also plays a later role in the “self”-versus-“non-self” distinction of the immune response.

Explanation:

Answer:

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Answer:

yep we will sure help!

Explanation:

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Answer:

B

Explanation:

The result of meiosis is four different daughter cells.

Meiosis is a type of reductional cell division in which a parental cell divides twice to generate four daughter cells.

In conclusion, the result of meiosis is four different daughter cells.

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Explanation:

during fertilisation the sperms are drawn up by a suction through the cervix into the uterus where they swim upto the oviduct using their tails although the sperms are millions only one will fertilise the ovum. as the ovum moves down the oviduct, it releases chemical substances which have to be neutralised by those produced by the acrosome before the sperm penetrates the ovum. when the sperm comes into contact with the egg the acrosome bursts open and releases the lytic enzymes which dissolve the egg membranes. Then the acrosome then turns inside out forming a fine filament that is used to penetrate the egg. Hence the head of the sperm enters the ovum, the tail is left outside the egg. the vitelline membrane undergoes a change which stops any other sperm from entering the ovum. once in the cytoplasm the head bursts to release the male nucleus then fuses with the female nucleus to form a diploid zygote

Answer:

4. According to what is observed in the diagram, the maltose (substrate) binds to the maltase (enzyme) to obtain glucose molecules (product), in a process of hydrolysis of the maltose.

5. Three factors that can affect intestinal maltose activity - slowing it down or stopping it - are temperature, pH and substrate depletion.

Explanation:

4. Enzymes, such as maltase, have the function of making a reaction faster and decreasing the activation energy. Maltase is responsible for breaking down a maltose molecule, a dimer, into two glucose monomers, which is a hydrolysis reaction of the bonds that hold glucose molecules together.

5. There are several factors that can cause the decrease or cessation of the activity of an enzyme. Enzymes are activated when substrate is available and work best under ideal temperature and pH conditions. When there are alterations of these factors, the enzyme will reduce or stop the reaction in which it intervenes.

Answer:

c

Explanation:

know it

Answer:Bryophytes are called amphibians of the plant kingdom because these plants though live in soil but they need water for sexual reproduction.

Explanation:

Answer:

A heterogeneous mixture is a mixture where throughout the solution the composition is not uniform. Through definition, a single-phase consists of a pure substance or a homogeneous mixture. There are two or more phases of a heterogeneous mixture.

Homogeneous mixture is a mixture which has uniform composition throughout its mass.Example:-air,saline solution,most alloys and bitumen.Heterogeneous mixture is simply any mixture that is not uniform in composition.Example:-Sandy water,Orange juice with pull,cereal in milk.

Answer: The question is incomplete and the options are not given but here are the options gotten from another websites.

A. Narrow part.

B. Wide part

C. The flow rate are the same in both part.

The correct option is C.

The flow rate are the same in both part.

Explanation:

The flow rate are the same in both because when there is partial blockage at the artery wall, the blood flow speed will reduce or stop, therefore the blockage will be a barrier or hindrance to free blood flow and therefore, both the narrow part and wide part will receive the same level of blood flow because of the blockage and this blockage result in restricted blood flow which in one way or the other hinder oxygen supply to the heart. The blockage deposits can cause a thickened artery wall and when blood flow is restricted it causes chest pain and if it stop it can cause heart attack. Blockage deposits can be as a result of artery wall damage.

Answer:

Biologically diverse communities are also more likely to contain species that confer resilience to that ecosystem because as a community accumulates species, there is a higher chance of any one of them having traits that enable them to adapt to a changing environment.

Explanation:

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Explanation:

the middle one light blue

Answer:

The middle option

Explanation:

Vertebrates can be mammals, birds, reptiles, amphibians, and fish.

Most fish do have backbones.