Explain how nucleotide subunits link to form a single DNA strand.

The vascular plants have several specialized reprodutive organs, which one responsible for one stage of the process of reproduction. The flowers are reprodutive organs, as well as fruits and cones, however they function in reproduction is distinct. The flowers is the most complex reproductive organ, since it is composed by for different structures (carpels, staments, petals and sepals), the cones are where the seeds are produced in the female plants during sexual reproduction after being fertilised by male gametes (pollen), and the fruits are the result following the pollination that are important to continuity of plants generations. Therefore, the alternative D (all of them are correct) is the answer for that question.

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1. a. What are the different environment that are home to various kind of organisms?

b. What are the environmental factors affecting the population size of a certain species?

c. How can an organism adapt to different kinds of environment?

The first question is regarding biosphere. The second is about carrying capacity. The third is about adaptation.

Answer: Fish!

Explanation:

If it were a mammal, It would live birth only, Frogs do not have scales, Reptiles have egg-birth only.

What creates most pollution is the burning of fossil fuels to produce energy for eletricity and transportation, because of the release of carbon dio

Answer:

Associates: 60

Bachelors: 120

Masters: 30-60

Doctorate: 60-120

Lymph, which is a substance different from the blood that carries out nutrients from the extracellular media of the different tissues of our body, flows through specific vessels, known as lymphatic vessels, so they don't go directly through the arteries, as we can see in the following picture:

Answer:

The answer is A

Explanation:

An ecologist studies the relationship between living things and their habitats.

A. C₆H₁₂O₆ and O₂ are formed during photosynthesis.

6CO₂+6H₂O→C₆H₁₂O₆+6O₂; Photosynthesis' Reaction

Photosynthesis is a prominent reaction in green plants. Chlorophyll is the main pigment responsible for trapping sunlight. Stomata primarily capture carbon dioxide, one of the raw materials. Water and oxygen are the by-products of it.

Glucose is the primary product formed in the process. The photosynthetic products are transported as sucrose and stored as starch.

Photosynthesis is divided into Light reaction and Dark reaction, on the basis of the availability of light. Carbon dioxide is reduced to carbohydrates and water is oxidized to oxygen.

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Answer: Rigid motions preserve collinearity. Reflections, rotations, and translations are all rigid motions. So, they all preserve distance, angle measure, betweenness, ...

3 pages

Explanation:

ALWAYS AND FOREVER

The correct option is the first one "by giving an example of how lack of infrastructure and advanced treatment facilities cause water inequality". Since, the paragraphs deal with these two core ideas: 1.- desertification danger and its consequences; 2.- the precarious conditions and gender inequity to obtain water.

The pressure would be changed to 4 atm in the machine to bring 500 ml of air into the lungs.

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Answer: Asexual Reproduction

Explanation:

Budding and spore formation are two types of  asexual reproduction methods. Hence, gamete formation and fertilization do not occur in both types. Both cases involve a single organism or a parent. Also, the offspring is genetically identical to that of the parent in both methods.

The correct option is 3.

The leaves have specific shapes that create the most efficient surface to absorb sunlight. Also, stomas are found mostly on the leaves, structures that allow the gas exchange: the CO2 enters into the leave, and O2 leaves it.

Baking soda is used as an antacid during heartburn because: (a)  The baking soda is serving as a buffer to take up excess H+ ions from stomach acid.

Antacid is a medication used to neutralize to excessive acid inside the stomach and also cure heartburn as well as indigestion. They can come as liquids or as tablets. The composition of antacids must include aluminum hydroxide. magnesium carbonate, etc.

Baking soda is a bicarbonate with the chemical formula NaHCO₃. It is a very versatile compound used in a variety of ways like in cooking, as a odor repellant, for cleaning and also as an antacid.

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The two molecules that are major electron acceptors in the catabolic pathways are NAD⁺ and FAD⁺, whereas  NADH and FADH₂ can be considered as electron carriers.  They play a fundamental role to produce energy as ATP.

The electron carriers are specific molecules that act during cellular respiration in order produce Adenosine triphosphate from ADP and phosphate, which is the energy coin of the cell.

Therefore, with this data, we can see that the electron carriers such as  NADH and FADH₂ are fundamental for producing ATP, while NAD⁺ and FAD⁺ accept electrons during this process.

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Answer:

Duck-billed platypus and spiny anteater

Answer:

The nervous system transmits signals between the brain and the rest of the body, including internal organs.

Explanation:

The nervous system's activity controls the ability to move, breathe, see, think, and more.

Genetics may play a great role, but upbringing could be more important since the eating, exercising and food selection habits could be acquired during this period. Aditionally, the often high price of healthy food and lack of knowledge about how to follow a balanced diet are some socioeconomic asociated factors, related to the upbringing, that must not be ignored.

Answer:

environment

Explanation:

example public

Skeletal muscle cells seen under a microscope would have long and thin striations an many nuclei, since this kind of cells, are actually

Answer:

A. long and thin with striations and many nuclei

Explanation:

Skeletal muscle cells are highly elongated cells with many nuclei. Under a microscope, skeletal muscle cells have a striated appearance.

Answer:

a

Explanation:

Answer: The answer would be CLASS.

Explanation: If we refer to the taxonomic level of classification,

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

we can see that CLASS ranks higher compared to Family. So, the Class has a wide range of genera that will belong to it than Family.

Answer and explanation:

1. sources of error- in the experiment, the amount of carbon dioxide released by east is monitored, a source of error could be the carbon dioxide present in the atmosphere which would interfere with the results.

2. baking recipes add sugars and molasses to provide carbohydrates for the yeast. this acts as a source of energy for the fermentation process.

3. the respiration of yeast could be monitored by measured the amount of sugar used or by measuring the amount of ethanol produced in the respiration process

4. high concentrations of sugar my inhibit yeast activity most likely because of the high osmotic concentration which prevents yeast from getting enough water for growth. as the osmotic concentration increases a yeast cell will reach a pont where water moves out of the cell.

The human body has three lines of defense.

-The first line of defense is physical and chemical barriers, such as the skin, mucous membranes, enzymes, stomach acids, and antimicrobial molecules.

-The second line of defense corresponds to nonspecific innate responses, cellular responses, for example, the phagocytes, proteins, for example, the complement system, and other responses like fever and inflammation.

-The third barrier of defense corresponds to the adaptative immune system and it consists of the immune response carried on by the T-cells, B-cells, and antibodies.

All of the options are parts of the three lines of defense of the organism, A and B correspond to the first line of defense, C corresponds to the second line of defense, and D corresponds to the third line of defense.

None of the given options is a correct answer to the question.

Answer: Atoms form molecules. A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds.

Explanation

JESUS HEARS EVERY PRAYER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! EVEN WHEN YOU CAN'T SEE OR HEAR HIM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

All cancers begin with a gene mutation giving rise to a faulty protein participating in cell reproduction, even if it is a minor change that occured in this protein. The major problem is that the cell will divide itself nonstop, forming a mass of mutated cells (a tumor). If they start to divide in an undifferentiated way, it can even access other tissues and becom a more serious problem. But, in order to define what causes a tumor at first, the uncontrolled cell division is the beginning of it all.

Therefore, the correct answer is D. uncontrolled cell division

The first event would be the formation of the earth, since in the beginning, conditions were so extreme that life was not possible. The next event would be the origin of life which occurred with the first prokaryotic cells since they are simple cells in structure. Later, there would be eukaryotes, more complex cells, with a nucleus and other organelles such as mitochondria. Eventually, the interaction between cells gave rise to multicellularity and with this, the multicellular organisms were formed, the first ones being plants, followed by reptiles in the Carboniferous and mammals in the Jurassic period. And because primates are mammals, they would be in the last place.

Solution:

The three-domain system is a biological classification introduced by Carl Woese et al (Fox). in the year 1990. In this classification, the cellular life forms are divided into the following 3 domains;

1. Archaea,

2. Bacteria and

3. Eukaryotes.

So that, we can conclude that the correct answer is:

C) WOESE AND FOX.

When we are talking of population growth we must take into consideration more factors than just growth rate. In the case of exponential growth, we have that the growth rate per capita, that is to say per individual, is constant regardless of the population size, so it grows as the population grows. Meanwhile, in logistic growth, the growth rate per capita creases as the population size approaches a maximum imposed by the limiting resources, that is to say, the carrying capacity of an ecosystem. Therefore we can say that the correct answer is logistic growth.

The case the exersice tells is an example of how introduced subtances to a particular environment have a negative impact on the species' health, as states the C answer option: "factors in the environment can change the characteristic