You are a molecule of nitrogen. Choose a starting
point in the nitrogen cycle and describe the
process you would go through to move through the
entire cycle.

Intro

Answer:

B. is the answer

Explanation:

form compounds with hydrogen and oxygen .

Answer:

Form four covalent bonds

Explanation:

Carbon makes four electrons available to form covalent chemical bonds, allowing carbon atoms to form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen.

Answer: The attachment listed some cell organelles,although there isn't a specific question on then but am going to be defining each of them and state their functions as well.

1. The Nucleus; The is command centre of the cell, it is made up of nuleolus, chromosomes, nucleoplasm,nuclear envelope and nuclear lamina.

it contains the genetic/hereditary materials that the cell is made up of.

The Nucleus plays a great role in the control of growth and development of the cell.

The nucleus also coordinates some of the the activities of the cell like cell division and protein synthesis.

2. Cytoplasm; The cytoplasm is one of the cell organelles,it is the liquid portion of the cell,it consists of cell contents between the plasma and the cell membrane. The fluid cytoplasmic material is where many cell organelles are found/suspended fluid. Most activities carried out by the cell occurs in the cytoplasm.

3. Endoplasmic Reticulum; The Endoplasmic Reticulum is one of the cell organelles that have the structure of a network of flattened sacs and tubules and play a crucial role in plant and animal cell. Rough endoplasmic reticulum has ribosomes attached to the cytoplasmic side of the membrane and the smooth endoplasmic reticulum lacks attached ribosomes in them thus giving it the smooth appearance.

The Endoplasmic Reticulum functions in the production, processing, and transport of proteins and in and out of the cell and also the production of lipids.

4. Golgi Body; One of the plant organelles that plays a role in the sorting and organizing the proteins produced and processed by the Endoplasmic Reticulum. these proteins are sorted and packed in vessicles to be used by the body.

5. Mitochondria; (a double membrane organelle). It is otherwise known as the powerhouse of the cell,it produce/generate energy in the form of ATP needed for cellular respiration. These energy produced is used for other cellular metabolic activities.

6. Lysosome (Animal) Chloroplast (Plant); Lysosomes are found in most animal cells, they function by digesting good and garbage,they contains acids that aids this function in the stomach of the cell and when the lysosome is diseased or explodes,the cell stops functioning.

The Chloroplast on the other hand is found in the cells of plants and algae,they play a crucial broke in photosynthesis by capturing the energy from the sun and turning the captured energy into usable forms like sugar,glucose and other organic molecules.

7. Cell Membrane; The cell membrane is the cell organelle that forms a boundary between the cell and the sorounding environment.

The cell membrane as well controls the movement of cellular materials in and out of the cell.

8. Nucleolus; The nucleolus is one of the cell organelles where ribosomes are made. The ribosomes are small grain-shaped organelles that make protein and they are found in the surface of rough Endoplasmic Reticulum. Nucleolus are small and round in structure and are found in the nucleus,

9. Vacoule (Plant Cells) Centrioles (Animal Cells); The vacoule is a storage chamber(reservoir) for wanted and unwanted materials in the cell, the vacoule is found within the cytoplasm and it is enclosed by a membrane that typically contains fluid.

The centrioles on the part of the animal cell is a cell organelle that has a structure of a two hollow cylinders,ring of microtubules next to each other(the centrosome).the centrioles are located just outside the nucleus of the cell.

Centrioles function by producing the mitotic spindles for cell division, and also assisting to pull chromosome pairs apart to opposite end of the cell during cell division.

10. Cell Wall; A protective semi permeable rigid outer layer of nonliving material that surrounds the cells of plants and some other organisms.

The cell wall houses the organelles of the plant cell.

The cell wall functions by giving the cell strength and structure,it's semi permeable nature filters and selectively allows certain materials in and out of the cell.

Answer:

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Explanation:

Answer:

The correct answer is option a, that is, the thrM and thrN would be transcribed at high levels in comparison to non-mutant.

Explanation:

Based on the given information, in the existence of thorain the expression of thrM and thrN will be prevented as thorain functions as a negative regulator. In case, if the gene, which codes for thorain, that is, thrL gets mutated, the coding for the functional thorain would get prevented.  

With the encoding of the non-functional thrL protein, there would be an enhancement in the expression of thrN and thrM genes and it will get transcribed at higher levels in comparison to the non-mutant or the wild-type.  

Answer:

Blood vessels and nerve fibers

Explanation:

The Haversian canal serves as the bone tissues and it runs through the core of each osteon. The osteon surrounds the Haversian canal and contain structures called lamellae.

These lamella are made largely of collagen fibers and also various network of rich blood vessels and cells which produces blood cells in the body. Nerve cells which helps in the relay of impulses are also present. The rich contents of the bone gives it its strength and durability.

Answer:

The correct answer is: blood vessels and nerve fibers.

Explanation:

Haversian Canals are a group of tubes that are located in the more peripheral region of the bone, known as the cortical bone. The cortical bone is hard and compact and is composed of several concentric layers of bone cells (osteocytes and osteoblasts) that circle around a haversian canal, which contains capillaries and nerve fibers. This structure is called an osteon.

Haversian Canals are very important for the correct functioning of the bone, as they give the cells their needed blood supply and innervation.

Answer:

See the answer below

Explanation:

If evolution is based upon genetic diversity, it means that evolution in organisms that only reproduce by mitotic division will depend largely on the frequency of random mutation of genes.

The only way that genetic diversity can occur between daughter cells formed from mitosis is if mutation takes place. Mutation general means a sudden change to the gene sequence of an organism.

Without mutation, evolution in mitotic organisms will be non-existence because there are no new genes or alleles being introduced into the gene pool.

Answer:

Nature

Explanation:

Air pollution harms plants and animals and even contaminates water – it stifles tree and crop growth, causing leaves of tree species to blacken and wither.

Answer:

The haemoglobin levels or counts can be used.

Explanation:

The oxygen carrying pigment of the blood is the heamoglobin (Hb).it is a protein molecule with for heam groups,Each of the latter can bind with  4 molecules of oxygen in a cooperate bonding.The more oxygen molecules binding by Hb,the more oxygen is carry in RBC.

Therefore if the number of Hb counts is reduced in an individual the volume of oxygen in the RBC of the subject should  reduced,Therefore, this should be a good indicator of the lower oxygen capacity of the blood of the individual.

Basically in a physiological female the Hb count/100ml of blood is 12-16g/ml,like wise 13-18g/100mI in a physiological  man.

Therefore fluctuations in the levels of these values below the set points  is an indicator of distortion in the oxygen carrying capacity of the blood.

The  amount of the blood in volume that contains RBC is called Hematocrit. Therefore for accuracy the HCT together with the Hb counts are good indicators of oxygen capacity of the blood.

Hematocrit refers to the volume percentage of the red blood cells in the blood. Oxygen-carrying capacity can be measured by several techniques.

The co-oximetry and Arterial Blood Gas can be used to determine the oxygen-carrying capacity.

The techniques can be explained as:

Thus, the co-oximetry and ABG test can be used to determine oxygen levels in the blood.

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Answer:

The answer is photosystem 1

Explanation:

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(If helpful)

Answer: A.) photosystem I

Explanation: i hope this helps :)

The lungs is the answer

Explanation

Earthworms do not have specialized respiratory organs like we do; instead, they take in oxygen and expel carbon dioxide directly through their skin. Oxygen diffuses through the earthworm's body surface and diffuses inward to the network of capillaries lying just under the body surface.

Answer:

I believe skin is the answer on edg.

Explanation:

Answer:

carbohydrate,lipids then protein

Answer:

I think the Carnivore population would increase

Explanation:

There would be more prey for the Carnivores. Leading to more food, which leads to more mating.

Answer:

well increase because if we look at the food chain or according to it the carnivore would get more food more food leads to mating

hope it helps

Answer:

Reciprocal crosses

Explanation:

Reciprocal cross is crossing in all possible ways. Such that a parent used as a male can be further used as a female while the parents used as a female can be used as a male. This cross helps to show if indeed the inheritance follows the simple mendelian pattern of inheritance if not the inheritance is somewhat complex and an allele of the gene has more domineering power over the other when used as a specific parents.

The first cross will be between the parental genotypes to obtain the first filial generation offspring. This crosses will be done on both ways

Example

AA × bb

Where AA is the female and bb is the male

bb × AA

Here bb has been used as female while AA is used as a male

If the offspring of the two crosses are the same there is no reciprocal difference and the pattern of inheritance is mendelian fashion if they are different there is reciprocal differences.

Answer:

a. Rr, Rr

b. rr

c. 0% because its the women who transmits the disorder.

Explanation:

PKU allele is an autosomal recessive disorder which is caused by mutations in both alleles of gene for phenylalanine hydroxylase. Alleles are either dominant or recessive. When two alleles are identical means that mother and father cells are homoozygous recessive. They both are combining the same alleles causing it to have a higher chance of genetic disorder.

Answer:

E. hepatic cells (hepatocytes) ​

Explanation:

These cells are the ones that secrete bile acids, rest do not match the given description

These cells make up about ~70-80% of liver mass and are primary authority at producing bile for the body

Answer:

Bile is formed from (con) kupffer cells

Answer:

Explanation:

This group is made up bacteria that utilizes of citrate and are slow lactose-fermenting. They belong to the family Enterobacteriaceae which share some particular feature with the lactose-fermenting citrobacters.

Thus, they have now been included in the genus Citrobacter with no regards to how fast or slower their lactose fermentation is.

Answer:

See the answer below

Explanation:

The trip will involve a bit of stoppage inside the nucleus during which replication and transcription will take place before proceeding to the cytoplasm where synthesized mRNA will become translated into protein.

The central dogma refers to a series of processes during which genetic information in the DNA of a cell is encoded and expressed in living cells. The 3 major steps involved in these processes are:

1. Replication

2. Transcription

3. Translation

Replication involves the synthesis of a double-stranded DNA molecule from a template of another double-stranded DNA molecule within the nucleus. In order words, replication is a process during which a DNA molecule reproduces itself. Each of the strands of the DNA acts as a template for the synthesis of another new strand. Eventually, 2 new double-strand DNA molecules are formed each consisting of one old strand and one new strand.

During transcription, the information contained in deoxyribonucleic acids is encoded and transcribed into another molecule known as the messenger ribonucleic acid. This process happens in the nucleus of the cell.

After transcription and processing of the mRNA produced, the resulting mRNA is then transported to the cytoplasm where, together with the ribosome and transfer RNA, the encoded information becomes translated into protein. Each of the genetic codes in the mRNA is translated to their respective amino acids and the amino acids are linked together by peptide bonds to form a protein.

Answer:

It prevents salt from flowing in.

Explanation:

so the tubeworm's cell membrane prevents minerals from flowing in and salt is a mineral so it won't allow salt to flow in.

Answer:

it prevents minerals in the water from flowing into the cell

Explanation:

APEX

Answer:

Explanation:

Animal which looks very different when it is grown up from when it was young is a tadpole.

Hope this picture is clear and easy to understand

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Answer:

affinity. Attraction between particles. Biology: A measure of the attraction of one biological molecule toward another molecule, either to modify it, destroy it, or form a compound with it. Examples are enzymes and their substrates, or antibodies and their antigens.

The answer is

A. DO, 0.75 (x,y) = (0.75x, 0.75y)

B. LM is parallel to L'M'.

and C. The vertices of the image are closer to the origin than those of the pre-image.

Answer:

the correct options are A, B, and D

Explanation:

Answer:

The ventral side is towards the belly side

The Dorsal side is back to the belly side

Anterior is Before the belly side

Posterior is after or coming after to the belly side.

Explanation:

The ventral side is associated with the animal or a person belly side which related to the organism digestion and respiratory organs.

The anterior is the before or in front of side position which is associated with the front line of an organism.

The posterior side is related to the after side or it is opposite to the anterior position of an organism.

It is depend on the organism position, that these sides are related to each other in some instances. In some cases these are orthogonal in some times.

Answer:

The effect of autonomic fibers on target cells is excitatory or inhibitory

The effect of somatic fibers on target cells is always excitatory.

Explanation:

The autonomic fibers is a part of peripheral nervous system that controls the involuntary actions of internal organs and glands like heart and intestines.

It's effect are excitatory or inhibitory because reflexive and involuntary manner. It helps to maintain homeostasis (internal stability and balance) through the coordination of various activities such as hormone secretion, circulation, respiration, digestion and excretion. This system control fight to fight response in the body incase of danger.

This system operate in opposite" actions where one system activates a physiological response and the other inhibits it.

The somatic fibers are part of the peripheral nervous system that help transmit sensory information and motor information. They are made up of nerves that connect to the skin, sensory organs, and all skeletal muscles.

Somatic neurons are excitatory neurons because excite their target postsynaptic neurons or target cells causing it to function..

Answer:

prophase, metaphase, anaphase, and telophase.

Explanation:

Answer:

The monk seal and the octopus/eel/triggerfish also live in close proximity to each other and have an ecological relationship between them. The monk seals are the predators to octopus/eel/triggerfish in the ocean.

The monk seal preys on octopus/eel/triggerfish in the ocean for their survival and competes with sharks and other marine animals for food.

Hence, the monk seal and the octopus/eel/triggerfish have ecological relationship of the predation in which one animal feed on another.

The ecological relationship between the monk seal and the octopus/eel/triggerfish - predator and prey.

The monk seals are seals with no ear and are found in the tropic climate.

Thus, the ecological relationship between the monk seal and the octopus/eel/triggerfish - predator and prey.

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Answer:

D

Explanation:

Answer:

The protein will not be synthesized because this point mutation produces the loss of the start codon (substitution of Met by Leu).

Explanation:

The mutations are changes in the DNA sequence that have diverse effects on protein synthesis. A mutation in the start AUG codon may lead to the reduction and even the elimination of protein synthesis. In consequence, this type of point mutation is usually referred to as 'start-loss mutation'.

Answer:

Protozoan

hope this help you

Answer:

add nutrients to the soil.

Explanation:

The death of chestnut tree result in the growth of the ecosystem because when the chestnut tree dies, the decomposers such as fungi and bacteria start feeding on the dead tree and as a result nitrogenous waste is produced mixed with soil which is the essential nutrient for the plants. These nitrogenous waste is used by the plants to make amino acids and as a result the growth of an ecosystem occurs.

Answer:

En biología, con el término procariotas se hace referencia a las células que no tienen un núcleo formado, en contraste con las células que han formado un núcleo, las células eucariotas.

Estas células tienen una estructura más simple que las células eucariotas y son de menor tamaño.  Externamente, las células procariotas están separadas del medio ambiente por la membrana celular, pero internamente no tienen ninguna otra formación. En su mayor parte, los organismos procariotas son unicelulares y pertenecen al grupo de bacterias.