Living systems are incredibly diverse in size, shape, environment, and behavior. It is estimated that there are between 10 million and 100 million different species. Despite this wide variety of organisms, it remains difficult to define what it means to say something is alive. Which of the following can be described as the smallest living unit?A.) OrganelleB.) DNAC.) ProteinD.) Cell

Answers

Answer 1

Answer:

The correct answer is:

Cell (D.)

Explanation:

The cell is the basic structural, functional and biological unit of a living organism that is the smallest unit of life. It is said to be the building block of life. Being the smallest unit of life, a cell is a collection of organelles and biomolecules that can function independently and still possess the qualities of life. These structures are enclosed in a cytoplasm, within a membrane, and these biomolecules include Nucleic acids (DNA, RNA), proteins etc.


Related Questions

Which best describes an idea that has scientific consensus?
All scientists must support the idea.
Few scientists think the idea is valid.
Most scientists disagree with the idea.
Most, but not necessarily all, scientists agree with an idea.

Answers

Answer:

the last option is the best

Explanation:

no idea that will ever pass without disagrement from other scientists who generate and defend the opposite ideas

All scientists must support the idea best describes an idea that has scientific consensus.

Scientific consensus is the collective judgment, position, and opinion of the community of scientists in a particular field of study. Consensus generally implies agreement of the supermajority, though not necessarily unanimity.Why is consensus important for scientist?It tells things that have already learned, and it let us know when things have stopped being debated in the sciences.Consensus is achieved through scholarly communication at conference, the publication process.

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Would we have the Same countries If Pangea existed? And would we look the same?explain please

Answers

i don’t think we would have the same countries. i feel like everything would be connected, like maybe a few really big countries instead of hundreds of different countries. i feel we would look different that how we already look because there would be more of different type of people around each other, resulting in mixed race reproducing.

what is anyhrosphere (in your own words)?​

Answers

Answer:

something that you invent?

Explanation:

Answer:

The anthroposphere encompasses

Explanation:

the total human presence throughout the Earth system including our culture, technology, built environment, and associated activities. ... In physical terms, the anthroposphere is comprised of the cities, villages, energy and transportation networks, farms, mines, and ports.

Based on the second law of thermodynamics, how much biomass of phytoplankton would be needed to produce 1 kilogram (kg) of large fish in this food web?

Answers

Answer:

1000kg

Explanation:

The 10% rule states that 10% of the energy stored as biomass at one trophic level, ends up as biomass at the next trophic level. So, in a 4 levels food web, we need 1000 kg of the first level -phytoplankton- to produce 1 kg of the last level -large fishes-.

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From the energy that reaches the earth's surface, only 0.1 or 1% is absorbed by autotroph organisms or producers. This small percentage of this energy flows through all organisms in the ecosystem -from autotrophs to heterotrophs- until it dissipates in the environment.

Only 10% of energy is tranferred from one level to the next one. This assessment is called The 10% rule. It states that only about 10% of the energy stored as biomass at one trophic level, ends up as biomass at the next trophic level.

The progressive reduction of energy determines the number of trophic levels (4 or 5).

Let us analyze the given example.

Phytoplankton ⇒ Zooplankton ⇒ Small Fishes ⇒ Large Fishes

According to the 10% rule, to support 1 kg of large fish, 10 kg of the anterior level -small fish- is needed.

To get the biomass of each level needed to support 1 kg of large fish, we need to multiply each level biomass by 10. This is:

To get 1 kg of large fish: 1 kg x 10 = 10Kg of small fish To get 10 Kg of small fish: 10 kg x 10 = 100Kg of zooplanktonTo get 100 kg of zooplankton: 100Kg x 10 = 1000 kg of phytoplankton.

So, in this example, to produce 1 Kg of large fishes, we need 10 kg of small fishes, 100 kg of zooplankton, and 1000Kg of phytoplankton.  

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What elements make up a carbohydrate?

Answers

Explanation:

Hydrogen, Carbon, Oxygen,

What type of rock (granitic or basaltic) would be more likely to contain the mineral quartz Why?

Answers

Answer:

I think granitic rock would contain more mineral quartz.

Explanation:

Because the magma cools slowly, crystals of different minerals have time to grow. Molecules in the lava do not have time to arrange themselves to form large crystals. Extrusive rocks have crystals that are too small to see without magnification. A common example of an extrusive igneous rock is basalt.

protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud. how can i say this different

Answers

Answer:

the nucleus in a small cloud

Explanation:

A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these statements explains why the pigweed re-appeared?A) Natural selection caused the pigweed to mutate, creating a new triazine-resistant species. B) The herbicide company lost its triazine formula and started selling poor-quality triazine. C) Triazine-resistant pigweed has less efficient photosynthesis metabolism. D) Only triazine-resistant weeds survived and reproduced, so each year more pigweed was triazine-resistant.

Answers

Answer:

A) Natural selection caused the pigweed to mutate, creating a new triazine-resistant species.

Explanation:

Due to constant use of triazine, the weed will build resistance to it over time unlocking the herbicides codes and making it ineffective.

Natural selection will play out allowing this weeds to bring about a sudden change in their genome that will become resistance, this resistance breed is what will then be produced over time because mutation is heritable and the herbicide then becomes ineffective and the weed continues to multiply and increase in volume.

Which of the following is not a defining characteristic of water

Low specific heat capacity
Polarity
Cohesion
Surface tension

Answers

Answer:

low specific heat capacity​

Explanation:

A (Low specific heat capacity)

Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In the case, the stored chemical energy in the logs was changed into

Answers

Answer:

The options are

A) electrical energy.

B) mechanical motion.

C) heat and light energy.

D) electrical and heat energy.

The answer is C) heat and light energy.

Explanation:

Chemical energy in the wood is lit up by fire and a burning process begins to occur. Burning involves a substance being consumed by fire and fire aids in the conversion of some forms of energy to mainly light energy as a result of the burning flames and also to heat energy as a result of the high temperature in the form of heat which the fire brings into play.

This validates the stored chemical energy in the logs being changed into light and heat energy.

Purple flowers are dominant over the white flowers. The parent generation includes two heterozygous parents. What are the possible phenotypes of these parent offspring

Answers

Answer:

Purple and white-flowered individuals.

Explanation:

First, let P represents the allele for purple flower trait and p for white flower trait. PP and Pp would be purple and pp would be white flower individuals.

The parents are two heterozygous individuals, Pp.

                     Pp    x    Pp

offspring:  PP    Pp    Pp    pp

PP and Pp = purple

pp = white.

Hence, the possible phenotypes of offspring from two heterozygous parents are purple and white-flowered individuals.

What can likely happen to uncommon alleles in small, isolated populations as a result of genetic drift?

Answers

Explanation:

they are likely to be lost.

How can Scientific beliefs be used incorrectly to fool people into thinking they are Scientifically founded

Answers

Answer:

Is really common that all the studies and scientific advances that we find today, born as an idea or hypothesis (that in a lot of cases is not the same as the end result).

So for example, suppose that a group of scientists is trying to find a cure to a certain disease, and they think that they may have found it, but there are not enough tests (for example they may try it in rats, but not in humans yet)

As the group starts to find results, they may share them (especially if they are positive), and here is when a given communicator/periodic takes this information and makes a claim like "Group of scientist finally finds the cure for...."

So in this case the media is using the fact that a group of scientists "thinks" something as a valid claim to affirm something.

There is also the case where a scientist says something (That has logic and scientific value only in context) and then the media uses some part of the scientist's statement out of context in order to affirm a given idea.

Jellyfish, mushrooms, oak trees, and bacteria contain cells. Which component of cell theory does this best illustrate? All living things are made of cells. Most organisms are made of cells. All cells come from other cells. Plants are made of cells.

Answers

Answer:

All living organisms are made of cells.

Explanation:

Hi!

No matter what is it, if it is a plant, an animal, a bacteria, anything! If it is alive, biotic, living, breathing, it is made up of cells. NO MATTER What! Rocks and sun are not alive so that means they are biotic. Which means they are not made of cells.

I really hope this helps!

Answer:

A all living things are made of cells!

Explanation:

Chromosomes that have their centromere near or at the center with two equal length arms are called ______.

Answers

Answer:

Metacentric centromere

What is bile juice,is it physical or chemical

Answers

Explanation:

Hey there!!!

It is a chemical.

Biles are the yellowish substances which are produced by liver to help in digestion process.

Hope it helps...

Answer:

Bile is a digestive juice that is secreted by the liver and stored in the gallbladder. And it is chemical

what is the most precise measurement of the volume of this liquid

Answers

Graduated cylinders, beakers, volumetric pipets, burets and volumetric flasks are five kinds of glassware often used to measure out specific volumes. Volumetric pipets, flasks and burets are the most accurate; the glassware makers calibrate these to a high level of accuracy.

Answer:

pipets

Explanation:

volumetric flask and granulated cylinders

which term references the approach sociologists use as a road map for how to view the world? A. Determinant B. Mindset C. Theoretical framework D. Physical grant

Answers

Answer: Theoretrical framework

Explanation: got it right on apex

you were asked to make a speech on how you would contribute to reduction in resource depletion which idea would you promote?

a.) water conservation at school
b.) uses of phones in the classroom to learn about resources
c.) improving eating habits
d.) involvement in sports

Answers

Answer:

Its (A) water conservation at school

Explanation:

Just took quiz on ED 2020

Why the bass and crayfish benefit from an increased level of phosphate, initially, but then die off

Answers

Answer:

Increased levels of phosphate are beneficial to phytoplankton and aquatic plants. In the short-run, this means increased micronutrients for herbivorous and omnivorous fish.

The phosphate, however, reacts with the water to reduce the oxygen levels obtainable in the water. Without oxygen, the fishes die off.

It is not unusual to find that with increased phosphate in water, healthy fishes begin to die off without any other plausible explanation.

The solution is to clean the water or treat it with solutions that impact positively whilst reducing the phosphate levels.

Cheers!

Two species of pine tree are very similar to each other. The pine trees are very different from a species of palm tree. Which statement best describes the characteristics of these trees?

Answers

Answer:

This question lacks options; the options are:

A). All of the tree species have the same number of characteristics in common.

B). The two species of pine trees have fewer characteristics in common than the pine trees and the palm trees.

C). The two species of pine trees have more characteristics in common than the pine trees and the palm trees.

D). None of the tree species have any characteristics in common

The correct answer is C.

Explanation:

Living organisms are of numerous and different species. In the order of classification of living organisms, species is the most exclusive and also represents the smallest. However, an organism can have different species on the basis of shared or common characteristics.

Two species are said to be similar if they share or have more characteristics in common. Likewise, different species have less characteristics in common. Hence, in the case of two pine tree species, which are very similar to each other but very different from a species of palm tree. This implies that the two pine tree species have more characteristics in common than they do with the palm tree species.

Answer:

c the two species of pine trees have more characteristics in common than the pine trees and the palm trees.

Explanation:

I I got it right on edge 2021

Lactase is an enzyme that breaks down a sugar found in dairy products known as lactose. Some people are lactose intolerant, and this can be due to not having enough lactase production.People who are lactose intolerant may not feel well after eating foods containing lactose. Identify the enzyme

Answers

Answer:

Lactose intolerance is the inability to digest a sugar called lactose that is found in milk and dairy products. Normally when a person eats something containing lactose, an enzyme in the small intestine called lactase breaks it down into simpler sugar forms called glucose and galactose.

Explanation:

The study of planets, the sun, comets, etc

Answers

Answer: the answer is astronomer

Explanation:

Answer:

Astronomy

Explanation:

Astronomy:

The study of planets, the sun, comets, universe and the whole celestial galaxies.

Hope this helps ;) ❤❤❤

how fungi get there food? ​

Answers

Answer:

hmmmmmmmmmmmnnmmmmmmmmmmm mmmmm

In a coal-burning power plant, the coal is an example of a system _____.

A. Product
B. Throughout
C. Output
D. Model
E. Input​

Answers

I believe the answer is E) Input

In a coal-burning power plant, the coal is an example of an Input System. So, the correct option is (E).

What is Coal burning power plant?

Coal-burning power plants are defined as those plants that produce electricity by burning coal in boilers to generate steam. The steam produced under extreme pressure flows into a turbine, which spins a generator to create electricity, then it cools, condenses back into water and returns to the boiler to start the process.

About 50% of coal is used as the primary fuel for power generation. The main function of a coal fired thermal power plant is to convert the energy available in the coal into electricity where as power plants work by using multiple stages to convert the stored energy coal for usable electricity which is an example of input system.

Thus, In a coal-burning power plant, the coal is an example of an Input System. So, the correct option is (E).

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Tyler is admitted to the hospital after an accident. In the hospital, Tyler overhears the doctor telling his mom that although he has a fracture in the axial skeleton, he’s lucky because the bone doesn’t protect any vital organ that’s essential for survival. Which bone has Tyler fractured?

Answers

Answer:

The correct answer is  mandible  

Mandible is a lower jaw bone that does not protect any organ in our body.

It is located in the facial region and is the strongest and largest bone of the mouth.

Mandible contains a region for the lower teeth and forms a temporomandibular joint.

The structure of mandible is comprised of two regions:

- The horizontal body (anteriorly)

- Two vertical rami (posteriorly)

Explanation:

the answer is mandible because it doesn’t protect any vital organ :) hope this helped you !

True or false A hypotheses has been tested many times by different independent researchers but a theory has not

Answers

Answer:

true

Explanation:

yea a theory has not tested hypothesis

Answer:

Testing a hypothesis can lead to one of two things: the hypothesis is confirmed or the hypothesis is rejected, meaning it either has to be changed or a new hypothesis has to be created.  This must happen if the experiments repeatedly and clearly show that their hypothesis is wrong.  It doesn’t matter how elegant or supported a theory is—if it can be disproven once, it can’t be considered a law of nature.  Experimentation is the supreme rule in the scientific method, and if an experiment shows that the hypothesis isn’t true, it trumps all previous experiments that supported it.  These experiments sometimes directly test the theory, while other times they test the theory indirectly via logic and math.  The scientific method requires that all theories have to be testable in some way—those that can’t are not considered scientific theories.

Explanation:

so in short True , can u mark me brainlyest

Soo-Jung used the subtraction property of equality to solve an equation for y. Which equation could be the one that Soo-Jung solved? 4 y = 12 StartFraction y Over 4 EndFraction = 12 2 (4 y) = 12 y + 4 = 12

Answers

Explanation:

Option 1.

4y=12

Dividing 4 both sides

y=3

Division property should be used.

Option 2.

[tex]\dfrac{y}{4}=12[/tex]

Cross multiplying each other,

y=12(4)

y=48

Option 3.

2(4y)=12

Opening bracktet in LHS

8y=12

Dividing both sides by 8 i.e.

[tex]y=\dfrac{12}{8}\\\\y=\dfrac{3}{2}[/tex]

Division property is used.

Option 4.

y+4=12

Subtracting both sides by 4 i.e.

Y+4-4=12-4

y=8

Subtraction property is used.

It means that in option (4) Soo-Jung used the subtraction property of equality to solve an equation for y.

Answer:

D y + 4 = 12

Explanation:

I just took the quiz and got 100

Which role of protists,fungi, and bacteria has the most positive effect on maintaining the plant population in an ecosystem?
O if they are found in the gut of animals, they can assist in digestion
They are a major food source for animals
They decompose dead materials, returning nutrients to the soil
They produce about 75 percent of the oxygen on Earth

Answers

Answer:

They decompose dead materials, returning nutrients to soil

Explanation:

You could say life on Earth depends on the protists because they supply us with oxygen, are critical organisms in food chains, and recycle important nutrients for other life forms to use.

In Zambia, which lions are likely to have migrated from a different population?

Answers

Zambian lions are split into two subpopulations, with one in the Greater Kafue Ecosystem in the west and the other in the Luangwa Valley Ecosystem in the east. Between these two geographically different regions lies Lusaka, Zambia's largest city, which is surrounded by farmland. males travel long distances to find new prides, while females remain in or close to the pride they were born in. So, for the lion, it's primarily males that are responsible for the movement of genes between prides. This male-mediated gene flow explains the lack of gene flow seen in mitochondrial genes compared to that of nuclear genes—female lions aren't making the journey, but they do mate with new males who come from far away.

Tried sorry
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