what are the three primary methods scientists use to group organisms into monophyletic clades? please provide examples for each. which has caused the major reorganization of phylogenies, i.e. the fall of the kingdoms, and why only recently?

Answers

Answer 1

Answer:Cladistics (/kləˈdɪstɪks/, from Greek κλάδος, kládos, "branch") is an approach to biological classification in which organisms are categorized in groups ("clades") based on the most recent common ancestor.

Explanation: Modern taxonomists seek to employ classification schemes that are consistent with the underlying evolutionary relationships among species. As shown below, phylogenetic analyses present a way to test existing Linnaean classifications (some of which predate widespread acceptance of the fact of evolution) and to determine which classifications are consistent with evolutionary history, and which require modification.


Related Questions

Compare the structure and function of each type of biological macromolecule.

Answers

Explanation:

Proteins, carbohydrates, nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers.

Molecules that make up living things and contain carbon are called __________ molecules.

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Living organisms contain inorganic compounds (mainly water and salts) and organic molecules. Organic molecules contain carbon; inorganic compounds do not. Carbon oxides and carbonates are exceptions; they contain carbon but are considered inorganic because they do not contain hydrogen

Molecules that make up living things and contain carbon are called organic molecules.

Organic molecules are those that derive their three-dimensional configurations primarily from their carbon skeletons.

Organic molecules are essential for the birth, development and functioning of all cells that make up living organisms.

About organic molecules:

All organic molecules contain carbon and practically always hydrogen, it is also frequent that they have oxygen or nitrogen.

These chemical elements enable multiple and covalent bonds to be established, allow carbon atoms to develop three-dimensional skeletons, and give rise to multiple functional groups.

Proteins, vitamins, carbohydrates, lipids, and nucleic acids are organic biomolecules, which are synthesized by living organisms.

Therefore, we can conclude that molecules that make up living things and contain carbon are called organic molecules, which a living being needs to develop normally.

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How do Limiting factors affect biotic potential? Please hurry and help me

Answers

Biotic factors that a population needs include food availability. Abiotic factors may include space, water, and climate. The carrying capacity of an environment is reached when the number of births equal the number of deaths. A limiting factor determines the carrying capacity for a species.

When scientists first studied electromagnetic energy, many theories were proposed to explain how these waves travel through space. Which statement below best describes how scientists arrived at the current understanding of electromagnetic energy?

A.Scientists all agreed with a single researcher who proposed the current theory.

B.Scientists completed internet searches of all available data to arrive at the current theory.

C.Scientists debated the theories with each other and compared the theories with scientific observations.

D.Scientists were able to observe the light from the brightest star in space, which verified the current theory.

Answers

Answer: D

Explanation:

Seems the most reliable to me :) good luck

Answer:

How might Ice Cube benefit future scientists and other people

Explanation:

How might Ice Cube benefit future scientists and other people

Reproductive cells are created by _____.

Answers

Answer:

Meiosis

Explanation:

Please give me brainliest

Which is the best description of photo phosphorylation

Answers

Answer:

The conversion of ADP to ATP using light energy is the best description of photophosphorylation.

Consciousness can best be described as __(blank)__.
a) Internal chemical systems that are regulated by a circadian rhythm
b) an ability to sleep and have lucid dreams
c) a lack of awareness of things going on inside or outside of yourself
d) an awareness of things going on inside or outside of yourself

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d) cause consciousness is when you’re awake and aware

Consciousness can best be described as an awareness of things going on inside or outside of yourself, hence option D is correct.

How consciousness is regulated?

Wakefulness/arousal and awareness are frequently used as the two components that make up consciousness.

It appears that proper arousal levels and subsequently wakefulness, which is required for consciousness, depend on well-synchronized phases of awake and sleep.

Circadian rhythms are changes in the body, brain, and behavior that occur on a 24-hour cycle. Most living things, including animals, plants, and bacteria, are impacted by these natural processes, which predominantly react to light and darkness.

Therefore, the 24-hour cycle of normal physical, emotional, and behavioral changes that the body experiences.

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Which of the following is found in animal cells, but not plant cells?
lysosome
vacuole
mitochondria
endoplasmic reticulum

Answers

Lysosome is found in animal but not plant

can someone quickly answer this i need to finish so many other things lol

Answers

Explanation:

A eukaryotic cell contains membrane-bound organelles such as a nucleus, mitochondria, and an endoplasmic reticulum. Organisms based on the eukaryotic cell include protozoa, fungi, plants, and animals. These organisms are grouped into the biological domain Eukaryota.

Any organism which has a closed membrane for a nucleas is a eukaryotic cell.

(organisms who dont have a nuclear memebrane is called prokaryotic cell)

We have eukaryotic cells as we have nuclear membrane but a bactaria(a prokaryotic cell) doesnt have a nuclear memebrane and all of its nuclear substances are floating insdie it getting jumbled up.

If an object has 50 Joules of kinetic energy and 237 joules of potential energy, how much mechanical energy does it have? ME = PE + KE

Answers

Answer:

287J

Explanation:

Given parameters:

Kinetic energy = 50J

Potential energy = 237J

Unknown:

Mechanical energy  = ?

Solution:

The mechanical energy of a system is the sum of the potential energy and kinetic energy of that system.

  Kinetic energy  = Potential energy + Kinetic energy

  Kinetic energy  = 50J + 237J  = 287J

Which layer is between the asthenosphere and the outer core?
A. Crust
B. Inner core
C. Lithosphere
D. Mesosphere

Answers

Answer:

D. Mesosphere

Explanation:

is the D. Mesosphere

As a scientist employed by the FDA, you've been asked to sit on a panel to evaluate a pharmaceutical company's application for approval of a new weight loss drug called Fat Away. The company has submitted a report summarizing the results of their animal and human testing. In the report, it was noted that Fat Away works by affecting the electron transport chain. It decreases the synthesis of ATP by making the mitochondrial membrane permeable to H+, which allows H+ to leak from the intermembrane space to the mitochondrial matrix. This effect leads to weight loss.How would you explain the decreased synthesis of ATP?

Answers

Answer:

The right response is "body temperature".

Explanation:

Whilst also growing the basal leakage of protons, this same drug Fat blocks the development of ATP. The whole change throughout the electrochemical gradient including its proton, therefore, induces the release of a possible form of radiation, rather than being transferred to ATP. Through thermoregulatory autophagy, outlet temperature throughout the individual contributes to loss, associated with elevated body temperature. Elevated body temperature would have the additional effect of removing fat.

The bi-product of Oxygen gas is a result of the decomposition of what molecule


a.Glucose
b.Water
c.Carbon Dioxide
d.ATP

Answers

I think D. Is the answer

Answer:

the answer is water

Explanation:

water is decomposed and the hydrogen molecule is taken leaving the oxygen as a bi-product

7.
On which date would we have 12 hours of daylight?
a. December 21
b. March 21
C. June 21
d. October 21

Answers

Autumnal equinox: Date in the fall of the year when Earth experiences 12 hours of daylight and 12 hours of darkness, usually around September 23. Summer solstice: Date on which the Sun is highest in the sky at noon in the Northern Hemisphere, usually around June 22.

your answer is june 21

How do doctors detect abnormalities in patients with the help of an EKG?
A.
by determining changes in the heartbeat
B.
by determining changes in blood pressure
C.
by determining changes in blood components
D.
by determining changes in arterial blood flow
Reset Next

Answers

Answer:

A. by determining changes in the heartbeat.

Answer:

determining heartbreak

4.
______ describes the average conditions of our atmosphere over a long period
of time.

Answers

Answer:

The answer is Climate.

Answer: climate


Explanation: weather is what conditions of the atmosphere are over a short period of time, and CLIMATE is how the atmosphere “behaves” over relatively long periods of time.

The sun’s energy influences climate in different ways. For example, the latitudes at the equator receive more intense energy from the sun and therefore have warmer temperatures. How does the sun’s energy most directly influence precipitation in an area?

a) the sun’s energy powers the water cycle by causing runoff, which leads to precipitation.
b) the sun’s energy controls the amount of condensation and therefore precipitation.
c) the sun’s energy creates surface currents in oceans that bring precipitation to different areas.
d) the sun’s energy drives the water cycle, which determines precipitation. (idk which this falls under but its science soo)

Answers

Answer:

b) the sun’s energy controls the amount of condensation and therefore precipitation.

Explanation:

During mitosis, everything breaks into two, except for the cell ________. It never really breaks; it pinches down the middle until it divides in two

Answers

Answer:

I think it would be the cell membrane but not 100% sure

Explanation:

What is the function of the valves in the lymphatic vessels?

Answers

Answer:

1. pick up any fluid that has escaped the blood vessels

2. return the escaped fluid to the heart

3. remove any foreign material from the lymph

Explanation:

Lymph vessels pick up any fluid that has escaped the blood vessels and return it to the heart. Lymph nodes remove any foreign material from the lymph (bacteria, viruses, tumors) and contain lymphocytes (WBC!!!)

The function of the valves is to bring the expelled fluid back to the heart.

Each and every fluid that had already exited the blood arteries is collected by lymphatic vessels as well as returned towards the heart. Lymph nodules filter out foreign particles from either the lymph as well as house lymphocytes.

Gather each and every fluid that had already leaked from the blood vessels.Start by removing anything foreign materials from the lymphatic system.

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1. Describe what a straight line on a graph indicates about the speed of an object on a
distance/time graph?
2. What does a curved line indicate- there are 2 kinds?
3. What does a horizontal line on a distance time graph indicate?
4. What does the slope on a line tell you about the speed of an object?

Answers

Answer:

Explanation:

If an object moves along a straight line the distance travelled can be represented by a distance time graph.

Fill in. Complete the statement below.

3.) _______ or H²0 into chemical energy ( food)
These organisms are referred to as the(4.)______ and they are vitally important to all life on Earth. they produce food to themselves and to feed the costumers who cannot make their own food.(5.)_______ also essential for life, is a by-product of photosynthesis


pako sagot plss​

Answers

Answer:

3) CO2 + water

4) producers

5) oxygen

Explanation:

Autotrophs are producers which use sunlight, water and carbon dioxide to make their own food. This occurs via the process of photosynthesis in green plants, algae ,phytoplankton and cyanobacteria. These occupy essential places in the food web, and provide the energy used by hetertrophs or consumers.

6 CO2 + 6 H2O + light  →  C6H12O6 + 6 O2

Carbon Dioxide + Water + Light       Glucose + Oxygen

Consumers carry out respiration to obtain the energy stored in carbohydrates produced by plants.

C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP

glucose+ oxygen →  carbon dioxide+ water+ energy

At which point in the eukaryotic cell cycle does mitosis occur?
A.before the G1 phase
B.after the G2 phase
C.following the S phase
D.after the G0 phase

Answers

It is the c the middle of long one
It would probably be C

what is glandular system​

Answers

Answer:

the endocrine system is the collection of glands that produce hormones that regulates metabolism, growth and development, tissue function, sexual function, reproduction,sleep and mood,then other things.

Answer:

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

someone help plzz brainliest
how does increasing the size of the habitat affect carrying? explain your answer. recall the scenarios: 0-15 years, little land; 15-30 tears, moderate land;30-45 years, ample land

plzzz helpp ​
I meant years not tears

Answers

Answer:

so basically carrying capacity is "the amount of organisms a specific environment can support", so if the environment is increased, most likely, more space and food will be available, which means the environment can hold more organisms, causing the carrying capacity to increase

Explanation:

what I just said lol

Answer:

Increasing the habitat size will increase the carrying capacity. Carrying capacity is the maximum amount of organisms a habitat and its resources can carry. So if the habitat expands and more resources become available, the population would expand. As you can see for the first 15 years, when it was the little land, there was only about () rabbits, but as the land grew throughout the years, the rabbit population grew. 15-30 years with moderate land had around () rabbits, and the ample land in years 30-45 had around () rabbits, a little over two times the amount the little land had.

Explanation:

just fill in the ()s with the numbers that show on the graph. This is kinda late but hopefully it'll help anyone who needs it.

Running for a long period of time, such as during a marathon, can result in muscle fatigue. Which process is important to a runner at the end of a marathon?
A. lactic acid fermentation to produce ATP without oxygen
B. Alchoholic fermentation to release carbon dioxide
C. The Krebs cycle to produce NADH and FADH2
D. The electron transport chain to produce ATP

Answers

The process that is important to a runner at the end of a marathon is lactic acid fermentation to produce ATP without oxygen (Option A).

Cellular respiration refers to the reactions by which aerobic cells normally produce energy in the form of ATP by using energy stored in the chemical bonds of foods and oxygen.

Muscle cells can produce ATP by both cellular respiration (aerobic conditions) and acid lactic fermentation (anaerobic conditions).

Acid lactic fermentation is energetically much less efficient than cellular respiration, but ATP production in cellular respiration is much slower than in fermentation, thereby muscle cells use this pathway (fermentation) when they cannot get oxygen fast enough to meet their energy requirement.

In conclusion, the process that is important to a runner at the end of a marathon is lactic acid fermentation to produce ATP without oxygen (Option A).

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Stand and let your hands hang next to your sides for a few minutes. Then, look at the backs of your hands. Do you see any bumps on the surface on top of your veins? What might those be, and what are their function?​

Answers

When you stand and let your hands hang next to your sides for a few minutes, the bumps you see on your veins are the valves that help move blood to the larger veins.

What we know about vein valves.

There are valves located throughout the veins in our bodies. Most of these are located in points where smaller venules fuse with the larger veins.

Their function is to prevent blood from flowing back into the smaller veins, thus helping with the normal blood flow of the body.

Given that the veins in our bodies are littered with small valves to help the blood return to the heart correctly, we can confirm that these are the small bumps that we can see when letting our hands down for a few mins, as they fill with the blood they try not to let flow back into the smaller veins.

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Please help it’s due today!!

Answers

5. 1-10 of species per year. 6. More land area and wood products. This means that people around the world look for meat to eat and that people cut down trees that leads to deforestation for resources/materials. 7. A.stop urbanization from growing to rapidly B. If you take/cut down trees replant new one so that we don’t run out of oxygen.
I hope this helps!

When solar energy is more spread out, the sun is at an angle, What happens to the light energy??

Answers

Answer:

Explanation:

As the sun angle decreases, light is spread over a larger area and decreases in intensity (energy input per unit area). Figure 4.10 illustrates the effect of changing sun angle on the area illuminated and intensity of heating at different sun angles. hope i helped :)

Why are weather observations taken?

Answers

Observing the daily weather is part of a regular routine for many of us, helping us decide what to wear and which activities we will do each day.

Answer:

c- Weather observations are taken to help with weather forecasting.

Explanation:

Accelerate

What do you think the following do when consumed? Protein, lipid,
carbohydrate, nucleic acid.
WILL GIVE BRAINLIEST

Answers

Answer:

Protiens-Amino acids which means Storage; Signals; Structural; Contractile; Defensive; Enzyme; Transport; Receptors

Lipid-Fatty acid and glycerol which means Energy storage; Protection; Chemical messengers; Repel water

carbohydrate- Monosaccharides some examples are Glucose, Fructose, Starch, Glycogen, Cellulose so that means  Energy storage; Structure

nucleic acid- which is pentose, nitrogenous base, phosphate AKA

Nucleotides also known as DNA, RNA which mean that it is Genetic information

hoped this helped i letiray just got done with biology

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