When using a dichotomous key to identify organisms, what do we look at?.

Answers

Answer 1

Answer:

Its based the organism's observable traits


Related Questions

what is NCF for smooth endoplasmic reticulum?

Answers

Answer:

smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular

Substance A is added to water. After it is added, hydrogen ions are produced and accumulate in the solution. Most of the hydrogen ions react with water molecules to produce a new substance, which is Substance B.


What type of substance was added to the water (Substance A), and what new substance was produced (Substance B)?


A) Substance A is a base.

Substance B is a group of hydroxide ions.

B) Substance A is an acid.

Substance B is a group of hydronium ions.

C) Substance A is an acid.

Substance B is a group of hydroxide ions.

D) Substance A is a base.

Substance B is a group of hydronium ions

Answers

Answer:

Substance B is a group of hydroxide ions.

Explanation:

According to the concept of acid and base substance A  is an acid while substance B is a group of hydroxide ions.

What is an acid?

Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste.  Compounds HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.

According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic  acids  depending on the number of protons which are liberated on dissociation.

Acids are widely used in industries  for production of fertilizers, detergents batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.

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The arteries get clogged and the cells to the heart become damaged by not receiving enough oxygen and nutrients. Then the damage to the heart causes heart attacks. This is characterized by what disease?
a) HIV
b) coronary-artery disease
c) diabetes
d) asthma
e) cancer

Answers

b) coronary-artery disease

Molecular systematics might examine all of the following types of data except ________.

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Answer: anatomical features

Explanation:

Molecular systematics might examine all of the following types of data except anatomical features.

In Saki's The Open Window", what was MRS.Sappleton's motive in watching the open window while Framton was explaining the reason for his vist? A.Mrs.Sappleton's was looking forward to introducing Framton to her husband and brothers. B.Mrs.Sappleton was eagerly awating the return of her husband and brothers from brothers from their hunting trip. C.Mrs.Sappleton was a very close friend of Framton's sister wanted to help in any way she could.

Answers

Answer: The reason why Mrs. Sappleton keeps her window open is because her husband and her brothers go hunting quite a lot (shooting)

Explanation:

What is a landslide?

Movement of earth materials up a slope.

Movement of water up a slope.

Movement of water down a slope.

Movement of earth materials down a slope. ill mark brainlyest

Answers

I think it is definition number 4, using my memory lol

The two organ systems that work together to regulate most aspects of the body's water balance are urinary and cardiovascular. digestive and cardiovascular. cardiovascular and respiratory. digestive and respiratory. urinary and respiratory.

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Answer:

urinary and cardiovascular.

Explanation:

The two organ systems that work together to regulate most aspects of the body's water balance are...

urinary and cardiovascular.

which features used to identify igneous sedimentary and metamorphic rock samples

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Answer:

Basis of Texture and Mineral Composition

Explanation:

As with igneous and sedimentary rocks, metamorphic rocks are classified on the basis of texture (grain size, shape, orientation) and mineral composition.

__________ is uncontrolled cell growth.

Answers

Answer:

Cancer

Explanation:

Hope this helps :))

When an animal cell goes through the process of mitosis, it divides into two smaller cells.

In order for the animal to continue growing, these two cells need to become as large as the original cell. How do the cells do this?

A. They undergo mitosis again to increase the number of cells in the area.

B. They combine with other cells around them to produce larger cells.

C. They absorb substances from the matter that the animal eats and drinks.

D. They expand by creating areas of empty space inside the cells.

Answers

Answer:

c

Explanation:

Answer:

C. They absorb substances from the matter that the animal eats and drinks.

Explanation:

Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells.

During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.

Which type of cell division is for growth and repair?.

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The division of a cell nucleus in which the genome is copied and separated into two identical halves. It is normally followed by cell division.

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Which of these is an immediate result of the movement of tectonic plates? A. ocean currents B. earthquakes C. glaciers D. tides​

Answers

Answer:

B. Earthquakes

Explanation:

Earth quakes are a result of tectonic plates shifting. All of these other ones are not a result of movement of tectonic plates.

Sperm become capable of movement while in the _____.

Answers

Answer:

epididymis

Explanation:

Can anyone name the 24th element on the periodic table?

Answers

Answer:

chromium

Explanation:

it is 24th element,1st element in group 6

name the 24th element on the periodic table is chromium

the image shows flat sedimentary rock layers in the foreground and angled sedimentary rock layers in the background is they were deposited horizontally and then shifted by a geologic event

Phylogeny is the evolutionary history of related groups of organisms. Organisms are grouped into taxa based on homologous characteristics, shared traits that result from common ancestry. Which statement is true?.

Answers

The statement that indicates "monophyletic refers to a given taxon which includes an ancestral species and all descendants" is TRUE.

What is a monophyletic group?

A monophyletic group is a taxonomic group composed of an ancestral species and all descendants of such species.

Monophyletic groups form specific branches of biodiversity that can be diagramed in the tree of life.

These diagrams represent evolutionary relationships and they are called cladograms (phylogenetic trees).

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The rate at which a specific allele appears within a population is known as the:.

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Allele frequency ( or gene frequency )

Specializations of the small intestine that increase its surface area for maximal absorption of nutrients include all the following except ________.
i. circular folds
ii. villi
iii. Peyer's patches
iv. microvilli

Answers

Specializations of the small intestine are related to surface absorption it doesn't include Peyer's patches.

What is the small intestine?

It lies between the stomach and the large intestine and is by far the longest part of the digestive tract.

It presents various specializations that guarantee an increase in the surface area for absorption of nutrients such as circular folds, microvilli, villi.

Therefore, we can conclude that specializations of the small intestine are related to surface absorption it doesn't include Peyer's patches.

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An experimental cross where only a single characteristic is considered (for example, flower color) is called ______. Multiple choice question.

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An experimental cross where only a single character is considered (for example, flower color) is called monohybrid.

What is a monohybrid cross?

A monohybrid cross is a type of genetic cross where only one phenotypic trait is assessed in the offspring.

This phenotypic trait can be any observable feature of the individual (for example, flower color in plants).

The monohybrid cross is very useful to understand the inheritance pattern of a particular trait.

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Leia is crossing sunflowers that have different genotypes for height. She crosses a tall sunflower plant with a genotype of tt with a short sunflower plant with a genotype of tt. Which ratio shows the probability that the two sunflower plants will produce a sunflower plant with a genotype of tt?.

Answers

You have to change the capitalization to make this question possible.

25:25 ratio shows the probability that the two sunflower plants will produce a sunflower plant with a genotype of tt.

What do you mean by genotype?

The genotype of an organism is its complete set of genetic material. Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location.

A genotype is a scoring of the type of variant present at a given location (i.e., a locus) in the genome. It can be represented by symbols. For example, BB, Bb, bb could be used to represent a given variant in a gene.

A genotype is the specific DNA that an organism inherits from its parents. A phenotype represents every possible way that the genotype manifests itself in the organism.

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Most of the digestive enzymes are secreted by which organ?.

Answers

Answer:

The pancreas is really the enzyme “powerhouse” of digestion. It produces the most important digestive enzymes, which are those that break down carbohydrates, proteins and fats.

Years ago, a wetland was filled in to build a park. The town wants to restore the area to a shallow
pond surrounded by a marsh. What do you think are the pros and cons of this proposal? What
information would be beneficial in helping people decide if they should support the plan or not?

Answers

A wetland is an area that has a shallow body of water and is a habitat of several species.

Restoration of the wetland

A wetland is an area that has a shallow body of water and is a habitat of several species. Many times, wheat crops are often grown on such marsh lands.

Now that the marshland was sand filled to create a park, the demolition of the park and the restoration of the wetland could lead to huge economic looses. On the other hand, the restoration of the park will lead to the preservation of important biodiversity.

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What is the primary use of amino acids within the protein metabolism?.

Answers

Explanation:

Most of the amino acid pool is used for the synthesis of protein and other nitrogen-containing compounds such as DNA bases, neurotransmitters, hormones, etc. Under certain metabolic situations, amino acids can also be used as a source of energy by the body.

When the motor neuron of a skeletal muscle motor unit is stimulated repetitively, it is called a:.

Answers

Answer:

I believe it is called a Alpha motor neurons

Explanation:

If we stopped burning fossil fuels today, what would happen to the climate?.

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If we stopped burning fossil fuels, the climate would be much cooler than it is today. The hot planet is a big concern today.

What is fossil fuel?

Fossil fuels are matter that is made up of decaying organic matter, such as animals and plants. Fossil fuels are made for millions of years. They are used in running big machines and generating power plants.

Fossil fuels are burned in running machines or run a car, and the gases that came from this burning cause the earth to warm.

Thus, the temperature would be significantly colder than it is right now if we stopped burning fossil fuels. Today, the planet's heat is a major problem.

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Higher plants have a polar main axis with a definite stem and root ends. This polarity is first established:

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Higher plants have a polar main axis with a definite stem and root ends. This polarity is first established in the embryo of the seed.

What is the embryo of the seed?

Generally, The fertilized ovule is an immature plant from which a new plant will grow.

In conclusion, Plant embryos are the starting point for pattern formation.

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Where is the location of erosion?

Answers

Answer:

On the top of the mountains under the soil

Explanation:

if it's right I'm pretty shure yes

The evolution of similar forms in different lineages when exposed to the same selective pressures is.

Answers

The evolution of similar forms in different lineages when exposed to the same selective pressures is convergent evolution.

Convergent or divergent evolution are related to the involved groups, the environments, the selective pressures, and the way in which organisms deal with them to achieve a better adaptation increasing their fitness.

What is convergent evolution?

Convergent evolution is the emergence of phenotypical similarities in different groups independently from each other.

Convergent evolution occurs when two or more taxonomic groups share the same traits or characteristics even when they do not share a common ancestor.

Usually, this is a pattern observed in groups that are exposed to the same or similar environmental pressures. The development of these similar phenotypes is related to higher fitness and competitive ability.

The evolution of similar forms in different lineages when exposed to the same selective pressures is convergent evolution.

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Describe how a decrease in ocean ph can affect marine organisms.

Answers

Ocean acidification can negatively affect marine life, causing organisms shells and skeletons made from calcium carbonate to dissolve. The more acidic the ocean is, the faster the shells dissolve.

Hope this helps :))

Organisms depend on pH for living in aquatic life, because due to acidification carbonate is lost, which is the main basic ingredient of saltwater.

How ocean pH affects marine organisms?

Carbonate, a main basic ingredient of salt water, is lost as a result of ocean acidification. This makes it more challenging for marine organisms to develop shells and skeletons.

Ocean acidification is sometimes called to as "sea osteoporosis" with a great cause. Ocean acidification can dissolve the minerals used by oysters, clams, lobsters, shrimp, coral reefs, and other sea animals to create their shells and skeletons.

Human health is also an issue, when the acidity of the water increases, the mucus on fish gills hardens, limiting the quantity of oxygen that may enter. This is why pH changes regularly result in fish deaths.

Therefore loss of carbonate from the ocean, the pH of the ocean affects the marine organisms.

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What is the order of the meninges from superficial to deep?.

Answers

The order of the meninges from superficial to deep includes the dura mater, arachnoid mater, and pia mater.

What are the meninges?

The meninges are specific membranous layers of the nervous system that protect it from damage and infections.

The meninges protects the brain and spinal cord from different agents (both internal and external factors).

The infections in the meninges may be serious health complications and therefore these layers are fundamental to protect us.

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Do you think dog legs homologous to human arms and whale fins?

Answers

Answer:

Similarly,

A dog's leg, A bird's wing, and A whale's fin

are also homologous to the human arm. Such structures are said to have diverged over time, indicating that at one time, they may have had the same function in the common ancestral organism.

Explanation:

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