how did early cells get their food

Answers

Answer 1

Answer:

Through photosynthesis, organisms could use sunlight to make food from carbon dioxide and water.

They provided food for themselves

Explanation:


Related Questions

If the length of the small intestine is ( 6 ) meters and the length of the large intestine ( 1.5 ) meters. what is the ratio of the large intestine to the small intestine

Answers

Answer:

1:4

Explanation:

According to the information provided in this question, the length of the small intestine is 6 meters and the length of the large intestine 1.5 meters. This means that the small intestine is longer than the large intestine.

To find the ratio of large intestine to the small intestine, we divide each length value by the smallest (1.5) i.e.

Large intestine = 1.5 ÷ 1.5 = 1

Small intestine = 6 ÷ 1.5 = 4

The ratio of large to small intestine according to this question is 1:4

Read the passage. Then explain the ways humans have influenced the traits in corn plants and the impacts each biotechnology has had.

Passage
Many of the types of corn found in grocery stores were originally bred for their taste and productivity. But these varieties are often threatened by pests. This makes it harder for farmers to produce enough corn.
Scientists have used genetic engineering to make GMO corn plants that are resistant to pests. In one type of GMO plant, they added genes from bacteria that live in soil. The genes let the GMO plants produce a bacterial protein that kills certain insects.

Answers

Answer:

It decreases cost of production on the crop as well as increase production.

Explanation:

It is a very efficient method to save a corn plant from the attack of bacteria. This method is used in almost each and every plant in order to make it resistance against harmful pests and microorganism. By using this technology, the cost of production on the growing of crop decreases which gives more profit to the farmers as well increase the overall productivity of that corn crop.

Answer:

One of the ways we have influenced the traits in corn is through selective breeding. We now have taller plants, and bigger ears of corn, that taste better. Another way we have influenced the traits is by modifying them to be pest resistant.

Hope this helps! ✌️

Human blood is 90% water and 10% solute. What would happen if you gave
a patient an IV of pure water (0% solute)? The patient's cells will

remain unchanged.

swell or lyse.

shrivel.

Answers

Answer:

When a person receives fluids intravenously (through an IV bag, for example), a saline solution is sometime used. Giving large amounts of pure water directly into a vein would cause your blood cells to become hypotonic, possibly leading to death.

Explanation:

The answer is B: It swells.

A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.

i need help to get the right question because i got it wrong

Answers

Answer:

last one

Explanation:

because they have no nucleus of any membrane bound organelles

how to do this question plz ​

Answers

Answer:

We are only given one leaf, but the leaves in layer D of the same species would not be identical. Some of them could have deeper indentations or fewer indentations. A wider leaf surface area lets a plant absorb more sunlight, so it would be an advantage if leaves have fewer indentations.

The plants with fewer indentations will reproduce more, passing on their genes for fewer indentations. This repeats for a long time, then plant leaves overall would only have very small indentations (like the leaf for layer B).

Explanation:

There are mutations and variations that make one organism different from another organism, even if they're the same species.

Natural selection is when the environment "chooses" the organisms that have an advantage in the environment to reproduce. Organisms that are selected to reproduce can pass on their genes to future generations.

The deep indentation leaves from layer D were basically "phased out".


You will measure and compare the heart rates of ten learners before and after
exercise. Choose ten learners in class who are willing to participate in this activity
They are the runners. Each of these runners must choose a classmate who will
measure his or her pulse rate.
Write down the question you are trying to answer in this investigation.
1.Write a hypothesis about the relationship between exercise and heart rate.​

Answers

Answer:

Exercise is responsible for the increasing heart beat.

Explanation:

Exercise is responsible for the increasing heart beat because our body needs oxygen more faster during exercise. When we exercise our body needs quick energy and oxygen which can be provided by heart as well as the heart also removes carbondioxide which is produces during respiration process so the heart beat increases in order to provide energy and oxygen to the muscles.

When mammals get an infection, their internal body temperature often rises 2 to 3 degrees Celsius. The body gets the energy it needs to react to an infection by -

Answers

Answer:

The correct answer is - increasing the rate of cellular respiration in the mitochondria.

Explanation:

During the infection, the body of mammals increases its temperature to kill the pathogens that normally die at high temperatures. To increase the body temperature our body promotes the rate of cellular respiration in the cells to produce more energy.

Cellular respiration is the process that helps in converting stored energy into a form of useable energy for the cell which is  ATP. It takes place in the mitochondria of the cell which is called as the powerhouse of the cell and all the function related to energy or ATP is conducted by here.

AHHHH PLS HELPP Which method is better for the environment: the controlled burn (burning oil off of the water) or using the naturally-occuring bacteria?

Answers

Answer:

using the naturally_occuring bacteria

Explanation:

go trying and helping wich with

Name two types of proteins that regulate the cell cycle. How do these proteins work?

Answers

Answer:

Internal and external regulators are two types of proteins that regulate the cell cycle. Internal regulators allow the cell cycle to proceed only after certain events occur. External regulators speed up or slow down the cell cycle.

Explanation:

I hope this helps :)

The two types of proteins that regulate the cell cycle are Cyclins and Cyclin-dependent Kinases (CDKs). These two groups of proteins are responsible for the progress of the cell through various checkpoints.

What are Proteins?

Proteins are made up of hundreds or thousands of smaller units called Amino acids. They are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs.

Cyclins regulate the cell cycle only when they are bound to Cdks and become fully active. The Cdk/cyclin complex must be phosphorylated, which further initiates other proteins to be phosphorylated that advances the cell cycle.

Retinoblastoma (Rb), is another group of tumor-suppressor proteins that regulates the cell cycle by monitoring the cell size.

Therefore, there are two types of proteins that regulate the process of the cell cycle are Cyclins and Cyclin-dependent Kinases (CDKs).

To learn more about the Cell cycle, refer to the link:

https://brainly.com/question/8283140

IS IT WEATHERING, EROSION, OR DEPOSITION?
Over time, the running water wears down rocks, making them smooth.

Answers

Answer:

Weathering

Explanation:

The answer is weathering because, weathering is the breaking or wearing down of rocks, soil, minerals, and wood. The water wore down the rock, making it smooth, so it connects to the definition that i just gave you.

Hope it helped!

This is due today!

Alice and her friends looked at a bunch of ladybugs. They noticed the ladybugs had different numbers of spots. They each had different ideas about why the numbers of spots were different.

This is what they said: Which person do you agree with the most?

A) Karen: I think they must all be different species of ladybugs.

B)Troy: I think each ladybug has the same number of spots as its parents.

C)Isaac: I think it depends on the age of the ladybugs. As they get older they add more spots.

D)Fred: I think it has to do with the sex of the ladybug. Males will add more spots to compete for the females.

E) Andrea: I think it depends on what each ladybug was born with.

F) Alice: I think they change their number of spots when there is a need for them to do so.

Explain your thinking. Describe your ideas about why the ladybugs look different.

Answers

I think the correct answer is F.

Explanation: Not all ladybugs are born with spots, the dots are a warning to predators that they are toxic. They get the spots when they need them to protect themselves.

What is the relationship between the hypothesis and conclusion?

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hypothesis is the answer you think you will find conclusion is the answer you will find

Answer:

They both relate the outcome of an experiment. A hypothesis is an guesstimate  of the outcome of an experiment, while the conclusion is the actual outcome.

Explanation:

Alright, I’m begging someone for help plz

Answers

Answer is C

Hope this helps

Scientists hypothesize that early whale ancestors were amphibious. Which statement
below is most consistent with this hypothesis? The fossil animals ____________.

Answers

Scientists hypothesize that early whale ancestors were amphibious. Which statement below is more consistent with this hypothesis? The fossil animals
Had four legs of equal length.

What distinguishes each element from all others, and gives it unique physical and chemical properties?

Answers

Your answer is Atomic Number. Have a good day! Also, any answer that says, ‘The link to the answer is here: (link)’ DO NOT CLICK ON IT!!

The physical and chemical properties of each element distinguishes form all others elements, all these properties depends upon the number of protons present in an element. Thus, the correct option is D.

What are elements?

A chemical element is a species of atoms which contain the same number of protons in the nucleus. Unlike the chemical compounds, elements present in the periodic table cannot be broken down into simpler substances by any chemical reaction.

The number of protons present in the nucleus is the defining property of the chemical element. It is referred to as the atomic number, is represented by the symbol (Z). All the atoms which have the same atomic number are the atoms of same element. All of the matter present in the universe is composed of chemical elements.

Therefore, the correct option is D.

Learn more about Elements here:

https://brainly.com/question/13025901

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fill in the gaps plzzz



Vasoconstriction and Vasodilation

__________ carries heat from the core around the body.

As blood flows through the ______________ close to the surface of the ______, heat is lost to the body’s surroundings.

The __________________ which supply the capillaries in the skin have smooth _________ in their walls. This means that the arterioles can dilate or constrict to ____________ the flow of blood into the capillaries.

Answers

Answer:

Blood

vessels (arteries), skin

vessels (arteries), smooth muscular cells, regulate

please help me with this it’s due today

Answers

Answer:

The correct answer is - 0 m/s.

Explanation:

In this position-time graph or distance-time graph, there are three different part that shows three different velocities one in increasing as it moves from a lower position in relative to time and one is stationary and the third is decreasing.

'Straight lines' on a distance-time graph suggest that the movement of the object is constant. During 'Part B' of the journey the object travels 0m in 3s. It is stationary for 3 seconds so the velocity will be zero as well.

Water, carbon dioxide, oxygen and some other substances can pass through the cell membrane because?

Answers

Answer:

Water, carbon dioxide,oxygen and some other substances can pass through the cell membrane because oxygen and carbon dioxide moves across the cell membranes from a simple diffusion a process that does not require any energy input and is driven by differences in concentration on the other side of the cell membrane.

HELP PLEASE ASAP



Which of the following is common between mitosis and
meiosis?
a. Interphase land Interphase ||
b. S Phase of Interphase
C. Crossing Over
d. Tetrad Formation in Prophase

Answers

Answer: i think its B

Which characteristic shows discontinuous variation in humans?
Length of foot
Height
Weight
Tongue rolling

Answers

Answer:

length of foot

Explanation:

L

E

N

G

T

H

O

F

F

O

O

T

The fluid mosaic model of the membrane proposed that membranes

Answers

Consist of Protein molecules embedded in a fluid bilayer if Phospholipids

Answer:

constant of protein hope it helps you

what is the definition of natrual asexul reprduction?

Answers

Answer:

In natural asexual reproduction, roots can give rise to new plants, or plants can propagate using budding or cutting. In grafting, part of a plant is attached to the root system of another plant; the two unite to form a new plant containing the roots of one and the stem and leaf structure of the other.

Explanation:

Through which blood vessel does blood flow back into the heart

Answers

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The arteries (red) carry oxygen and nutrients away from your heart, to your body's tissues. The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart.

Which type of muscle's movements are involuntary?
A. Smooth muscle and Cardiac muscle
B. Smooth muscle and Skeletal muscle
C. Cardiac muscle
D. Skeletal muscle

Answers

the answer is A smooth and cardiac
answer is d skeletal muscle

Temperature when the air is full of water vapor

Answers

I think this is correct ( sorry if is not)
This temperature where the change of state occurs is called the dew point. For air containing 3.368 g/kg of water vapor, the dew point is 30 degrees F; for air containing 10.699 g/kg of water vapor, the dew point is 60 degrees F; and for air containing 30.052 g/kg of water vapor, the dew point is 90 degrees F.
hope this helps!

write a different living and nonliving things found in rainforest mangrove swamp and coral reef ecosystem​

Answers

IN RAINFOREST:-

living things are:-

trees plantshrubsfernsbeers deersbirds insects frogs

non living things are:-

water rain temperature soilairrocksIN CORALS REEFS:-

living things are:-

fishes coralsmosssea turtlesseaweedslobster

non living things are:-

rock sunlight sandtemperature IN MANGROVE SWAMP:-

living things are:-

crocodile monkeyslizardsmicrograms

non living things are:-

sunlight temperature flooding

hope it is helpful...plz mark it is brainliest.

a particle of oxygen has 8 protons and 8 electrons. is this an atom or an ion? what's the charge?

Answers

Answer: It is Atom and the charge would be postive.

Explanation: If the atom had 8 protons and 8 electrons (oxygen for example), knocking one of the electrons out, makes 8 protons and 7 electrons. The atom now has a net charge of +1 because the 7 electrons cancil the positive charges of 7 of the protons in the nucleus, but there is one remaining proton with a positive charge.Oxygen's 8 electrons are negatively charged, and they orbit the atomic nucleus and balance the positive charge of the 8 protons. The positive charge of 1 proton exactly cancels the negative charge of 1 electron. Answer 9: Oxygen is atomic number 8 on the periodic table, which means it has 8 protons!

Hope this helps :) Can u plz mark me branliest :)

A particle of oxygen has 8 protons and 8 electrons in an atom and the charge on it is zero.

What is an atom?

It is the smallest particle of matter composed of electrons and a nucleus of protons and neutrons.

What is an ion?

It is an atom with a positive or negative charge due to either loss or gain of electrons.

Every atom tends to have a noble gas configuration for stability and they either tend to lose, gain, or share electrons to achieve it.

The oxygen atom generally gains 2 electrons to complete its octet and has a net -2 charge.

To learn more about electrons and atoms here,

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Using the Periodic Table of Elements, what group of elements are also known as the Halogen Family?

Answers

Answer:

I NEED SOME POINTS TO ASK A QUESTION UGH

Explanation:

Answer:

the answer is this hope it helps

I need help with 5 science questions :)

Answers

Answer:

1. . For example, lake trout are native to the Great Lakes, but are considered to be an invasive species in Yellowstone Lake in Wyoming because they compete with native cutthroat trout for habitat.

2. Japan

3. Kudzu was introduced from Japan to the United States at the Philadelphia Centennial Exposition in 1876 as an ornamental and a forage crop plant. The Civilian Conservation Corps and southern farmers planted kudzu to reduce soil erosion.

4. Kudzu grows out of control quickly, spreading through runners (stems that root at the tip when in contact with moist soil), rhizomes and by vines that root at the nodes to form new plants. Once established, kudzu grows at a rate of one foot per day with mature vines as long as 100 feet.

5. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe mammal declines in Everglades National Park have been linked to Burmese pythons. ... Raccoons and opossums often forage for food near the water's edge, which is a habitat frequented by pythons in search of prey.

Explanation:

hope this help bae

Macromolecules are labeled as organic because they contain which element?
Group of answer choices

oxygen

nitrogen

carbon

hydrogen

Answers

Answer:

Carbon and hydrogen

Explanation:

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What is the area of the quarter circle ? *20 point3f+ Suppose two angles in a coordinate plane, one measuring 80 and the other measuring 160, were both rotated 180 about the origin and then translated 40 units down. Which of these would be a measure ofone of the resulting angles? Select all that apply.1603408040120260 Can someone help me Find the value of X helppppppppppppppppppppppp Read this excerpt from a classic story.Alice was beginning to get tired of sitting by her sister on the bank and having nothingto do. Once or twice she had peeped into the book her sister was reading, but it had nopictures or conversations. "What is the use of a book," thought Alice, "without pictures orconversations?"Suddenly a White Rabbit with pink eyes scampered close by herThat was nothing so very remarkable, nor did Alice think it strange to hear the Rabbitsay to itself, "Oh dear! Oh dear! / shall be late." But when the Rabbit actually took a watchout of its waistcoat pocket looked at it, and then hurried on Alice leaped to her feet. Itflashed across her mind that she had never before seen a rabbit with either a waistcoatpocket or watch. Burning with curiosity, she ran across the field after it. Fortunately, shewas just in time to see the rabbit pop down a large rabbit hole under the hedge.4.ititFrom this excerpt, it can be predicted that Alice will most likely. tell her sister about the strange animals in the field.. write a new book with pictures and conversations in it.C. follow the White Rabbit on an unusual adventureDblock or close the rabbit hole to keep the White Rabbit away in his book, The Battle of Hastings 1066, published in 2003, historian M.K. Lawson argued that William was able to win the Battle of Hastings because of considerable luck.' How far do you agree with this view of William's victory in 10667[20] HELP!! Find the distance between each pair of points. Round your answer to the nearest 10th if necessary. Whats the difference between a manager and tour manager? Shao Airlines is considering the purchase of two alternative planes. Plane A has an expected life of 5 years, will cost $100 million, and will produce net cash flows of $28 million per year. Plane B has a life of 10 years, will cost $132 million, and will produce net cash flows of $27 million per year. Shao plans to serve the route for only 10 years. Inflation in operating costs, airplane costs, and fares are expected to be zero, and the company's cost of capital is 9%. By how much would the value of the company increase if it accepted the better project (plane) -- Me ayudas con el equipaje, por favor?-- Si,ayudo. *losmete What are three types of variations within populations or species? Wipe your hand across your mouth, and laugh;/The worlds revolve like ancient women/Gathering fuel in vacant lots.Which of these best describes this excerpt from T.S. Eliots Preludes? A. It is an example of sprung rhythm. B. It is an example of iambic pentameter. C. It is an example of dialect poetry. D. It is an example of free verse. John founded and pastored the seven churches of Asia Minor mentioned in the book of_____a. 1 Johnb. Revelationc. Jude did the frogs choose wisely? in the story the frogs asking for a king Which is the link between fossil fuel use and flowers blooming earlier in the spring season?A. A warmer Earth due to fossil fuel emissions has milder winters and earlier springs.B. Fossil fuel emissions contain compounds that are fertilizers.C. Spring seasons are cooler due to increased fossil fuel emissions.D. Increased greenhouse gases due to fossil fuel emissions allows more sunlight to reach Earth. HELP MEElements in a vertical column on the Periodic Table have similar properties and are all members of the sameof elements.moleculeBphaseatomDgroup Using the information provided, identify thedomain and range.I really need help I dont understand this What theories of intelligence relies on the sensitivity to other peoples feelings and the ability to respond to them?A. Emotional Intelligence by Daniel Goleman and Gardner's Theory of Multiple IntelligencesB. Emotional Intelligence by Daniel GolemanC. Gardner's Theory of Multiple IntelligencesD. Neither Which of the following best explains why the biosphere is a key component of the Earths systems?a.The biosphere is a key component of the Earths systems because it is a common concept to many disciplines in science.b.The biosphere is a key component of the Earths systems because the seasonal cycles directly affect primary productivity.c.The biosphere is a key component of the Earths systems because it helps drive the other systems by interacting with and exchanging matter and energy with the other spheres.d.The biosphere is a key component of the Earths systems because it has evolved to create the chemical composition of the planet we know today.Please select the best answer from the choices providedABCD Which of the following was one goal of propaganda during WW1