Biology Middle School

These type of cells are specialized, complex, more modern and multi-cellular and most plants and animals fit into this domain.


options:


Prokaryotic Cells



Eukaryotic Cells



Neither A nor B



Both A and B

Answers

Answer 1

Answer:

Eukaryotic cells

Explanation:

Eukaryotic cells are cells in which nucleus and other cellular organelles are bounded by doubled membrane.

Answer 2

B. Eukaryotic Cells

Explanation:

all organisms with cells that have nucleus and membrane-bound organelles (all eukaryotes)

Related Questions

What kind of reservoir shaped a lot of the Grand Canyon? How do you know?

i can't find science so this will be kind of out of place. this is 6th grade work

25 points!!!!

Answers

Great reading kid hope u pass
I dont know you tell me

can someone make a story about calcium? pls help me

Answers

Answer:

um a story about Calcium? sure... Pls mark me brainliest!

Explanation:

Calvin Calcium was strong. Calvin Calcium was sturdy. Calvin Calcium had very good teeth. He

was a happy little boy and drank all of his Phenyl-Free. But one day all that changed. Here’s what

happened…

“I’m not going to drink my ‘milk’ any more,” said Calvin one morning at breakfast.

“Oooh,” said his mother, “then you can get your calcium from green, leafy

vegetables.”

“No,” said Calvin, “I’m not going to eat green, leafy vegetables either.”

“Oooh,” said his mother, “what will happen to Calvin?”

It wasn’t too long before Calvin found out.

In May, it was time for Calvin to have his dental check-up.

“Oooh,” said the dentist, “you have four cavities, Calvin. Have you

been eating foods with lots of sugar? Have you been forgetting to brush your teeth?

Maybe you haven’t been eating enough foods that give you calcium.” The dentist

filled the four cavities, and Calvin’s teeth were fine again. Calvin didn’t mind—too

much.

But in July, Calvin and his friends, Fred and Linda, were

building a tree fort.

They were almost done when, whoops, Calvin lost his balance and

tumbled to the ground!

“My arm hurts!” wailed Calvin.

“Oooh,” said his mother, running from the kitchen, “we’d better go

to the doctor!”

Doctor Smith felt Calvin’s arm very carefully.

“Oooh,” said the doctor, “you have a broken arm, Calvin.”

He put Calvin’s arm in a cast, and Calvin couldn’t go out to play for a long

time. He missed splashing in Fred’s pool to get cooled off on hot days. He

missed Linda’s birthday party. They played lots of neat games and had his

favorite low protein foods. But most of all, he missed playing with his friends.

He could hear them playing ball and roller skating every day.

Calvin went back to the doctor because it was

taking so long for his arm to heal.

“Oooh,” said the doctor, “it looks as if you haven’t been

eating foods with lots of calcium to make your bones strong.”

The Calvin Calcium Story

One morning Calvin said to his mother, “I’d like some of my ‘milk’ for breakfast.”

So that morning Calvin drank his ‘milk’. It tasted very good.

At lunch, Calvin said, “I’d like some green, leafy vegetables, please.”

So that noon, Calvin had green, leafy vegetables. They tasted very good too.

At dinner, Calvin said, “I’d like some green, leafy vegetables AND some ‘milk’, please.”

So Calvin had collard greens and lots of his ‘milk’ for supper. How good they tasted!

Calvin’s arm was almost healed now. Soon he would be able to join his

friends at the pool, on skates, and in their ball games.

When Calvin went to the dentist that fall, he had only one cavity. Calvin said

he had been brushing his teeth after eating AND eating foods that give him

calcium, especially his ‘milk’.

Calvin was again a strong, sturdy, happy boy—with very good teeth and strong bones!

Calcium is nature's most renowned structural material. Indeed, calcium is a necessary component of all living things and is also abundant in many non-living things, particularly those that help support life, such as soil and water. Teeth, sea shells, bones and cave stalactites are all products of calcium.

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Interestingly, calcium seems to come in fifth place wherever it goes: It is the fifth most abundant element by mass in the Earth's crust (after oxygen, silicon, aluminum and iron); the fifth most abundant dissolved ion in seawater (after sodium, chloride, magnesium and sulfate); and the fifth most abundant element in the human body (after oxygen, carbon, hydrogen and nitrogen). It is, however, the most abundant metallic element in the human body, 99 percent of which can be found in our bones and teeth (about 2 lbs. of it!), according to Chemicool.

In its pure elemental state, calcium is a soft, silvery-white alkaline earth metal. It is important to note, however, that calcium is never found in this isolated state in nature, but exists instead in compounds. Calcium compounds can be found in a variety of minerals, including limestone (calcium carbonate), gypsum (calcium sulfate) and fluorite (calcium fluoride), according to Chemicool. Calcium makes up about 4.2 percent of the Earth's crust by weight.

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In order to isolate pure calcium, it must be extracted through electrolysis, a technique that uses a direct electrical current to separate elements from their naturally occurring sources. Once isolated, calcium is quite reactive and will form a grayish-white oxide and nitride coating when exposed to air.

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Calcium (Ca) is No. 20 in the periodic table of the elements, appearing just below magnesium in the same column (Group IIA) as the other alkaline earth metals (a group of metals that are more chemically reactive than most metals). Calcium comes from the Latin word "calx," meaning lime. This is not a reference to the fruit, but rather calcium oxide (CaO), the useful building material derived from heated limestone.

Calcium is extremely important to the human body. Not only is it vital for bones and teeth, but it assists in muscle movement by carrying messages from the brain to all our body parts. Cells in all living things must communicate with, or "signal," one another. Calcium ions act as vital messengers between these cells and are necessary in all multicellular life forms. They also assist in the release of hormones and enzymes.

In food, calcium is found in mineral form. Foods high in calcium include dairy products — such as milk, cheese and yogurt — and some vegetables, such as kale, watercress, spinach and broccoli. In order for calcium to absorb properly, it should be taken with vitamin D. Magnesium is also necessary for proper assimilation and use of calcium in the body. In fact, if we take too much calcium and not enough magnesium, it can cause problems in the body.


Lime, or calcium oxide, produces a brilliant, intense light when exposed to an oxyhydrogen flame, according to Chemicool. In the 1800s, before electricity was invented, this substance was used to light up the theater so actors truly performed "in the limelight" — hence the saying.
When turtles (typically pet turtles) don't have enough calcium circulating through their blood, they may get an ailment called Metabolic Bone Disease, commonly known as Soft Shell Syndrome. For a turtle to be healthy, the calcium to phosphorous ratio should be 2:1. When their calcium levels are low, however, the mineral is leached from their bones in the body's attempt to balance things out. The result is soft bones, weakness and a soft, deformed shell, and it often results in death. The disease can be prevented with a proper diet and adequate sunlight (or other appropriate lighting for reptiles).
Stalactites and stalagmites, the icicle-shaped formations found in underground caverns, are formed slowly over time by the build-up of calcite residue. This occurs when water seeps through the cracks in the ceiling of a limestone cave, dissolving and carrying along traces of calcite, the building material of limestone. As the water drips from the ceiling, this calcite residue begins to build up at the site of the drip, eventually resulting in icicle-shaped stalactites hanging from the cave ceiling. This water dripping from the stalactites then forms stalagmites on the ground

True or false? The FLSA classifies employees as exempt or nonexempt from earning overtime pay for hours worked in excess of 50 hours per week.

Answers

Answer:

true

Explanation:

Answer: True





Explanation got it right

When a cross is made between AaBb x AaBb, what fraction of the offspring is able to produce a genotype that is heterozygous for both characteristics?
A.3/16
B.9/16
C.1/16
D.4/16

Answers

Answer:

I believe the answer is D

Explanation:

Answer:

D = 4/16

Explanation:

What best describes direct democracy?
1. A government where people vote on laws and rules
2. A government where people vote for representatives
3. A government where citizens rule
4. A government where representatives make laws

Answers

1 because people are voting on laws and rules direct means the people do it directly

Translate the words into math symbols. The difference of nine and a number is three. What steps would you take to translate the statement? Check all that apply. Replace "difference" with a division sign. Replace "difference" with a subtraction sign. Replace "a number" with the variable n, to represent an unknown value. Replace "is" with an equals sign. The translated equation is 9 ÷ n = 3. The translated equation is 9 – n = 3.

Answers

+•-my thing gotta be 20 things long tho

Answer:

Here are the correct answers that you should check.  

Replace "difference" with a subtraction sign.

Replace "a number" with the variable n, to represent an unknown value.

Replace "is" with an equals sign.

The translated equation is 9 – n = 3.

Explanation:

The amoeba excretes waste through _________ while a sparrow excretes waste through __________.
​

Answers

Answer:

The amoeba excretes waste through Contractile Vacuole while a sparrow excretes waste through Cloaca.

​

Explanation:

In some unicellular eukaryotic organisms (e.g., amoeba), cellular wastes, such as ammonia and excess water, are excreted by exocytosis as the contractile vacuoles merge with the cell membrane, expelling wastes into the environment.

Birds, unlike mammals, do not have separate exits for urine and feces. Both waste products are eliminated simultaneously through the cloaca. While mammals excrete nitrogenous wastes mostly in the form of urea, birds convert it to uric acid or guanine, which reduces water loss in comparison.

How are crops genetically modified?
PLZ HELP

Answers

Answer:To produce a GM plant, new DNA is transferred into plant cells. Usually, the cells are then grown in tissue culture where they develop into plants. Genetic modification of plants involves adding a specific stretch of DNA into the plant's genome, giving it new or different characteristics.

Explanation:

Answer:

by crossbreeding and controlling

Explanation:

Please help with this problem!

Answers

I believe the answer is 3.

Hope this helped you! Please follow my account, thanks!

cool winds from the surrounding land

Which is true of genes?

O They are sections of DNAthat produce the proteins that control an organism's characteristics

O They are proteins that produce sections of DNA which control the cell's activities

O They are features that can be observed rather than measured.

O They are the same as traits which show up in an organism if they are dominant​

Answers

the correct answer is: they are sections of DNA that produce the proteins that control an organisms characteristics

The statement that is true about Gene is that They are sections of DNA that produce the proteins that control an organism's characteristics.

What is Gene?

Gene refer to an hereditary unity which is transmitted from parent to their offsprings and it is transferred from one generation to another.

It is the major constituent of an organism DNA.

Therefore, The statement that is true about Gene is that They are sections of DNA that produce the proteins that control an organism's characteristics

Learn more about genes below.

https://brainly.com/question/1480756

#SPJ2

A hammer can be used to see how a mineral breaks. If you observe square chunks of the mineral when broken, what can you conclude?

The mineral is soft.
The mineral is hard.
The mineral has cleavage.
The mineral does not have cleavage.

Answers

Answer:

The mineral has cleavage

Explanation:

Cleavage describes the shape of internal planes of weakness between the molecules that make up a mineral, often forming 3-D geometric shapes like cubes and prisms. When a mineral breaks, it will commonly break along these cleavage planes regardless of how hard or soft the mineral is.

Answer: It’s C. I think

Explanation: I hope this helps! And happy new yrs!

How could you describe the size of an atom?

A It is so large it is bigger than a tree in the forest.
B It is so small it cannot be seen without magnification.
C It is the size of a grain of sand and can be seen with our eyes.
D It is the size of an apple or a large piece of fruit.

Answers

B because atoms are very small and cannot be seen with your eyes
Its B

Atoms are extremely small, typically around 100 picometers across.

Number 1 of the cell in the image below is the

Answers

Answer:

it looks like chloroplast is this a plant or animal cell?

Explanation:

What molecule that is created during photosynthesis provides energy for cellular processes?

chlorophyll

ATP

oxygen

glucose

Answers

Answer:

D. glucose.

Explanation:

I don't have any info on it so, hope this helps.

Glucose, Photosynthetic cells contain chlorophyll and other light-sensitive pigments that capture solar energy. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as glucose.

List the differences of Eukaryotic and Prokaryotic cells.


- Thank you :)​

Answers

Answer:

Eukaryotes are more complex they have a nucleus prokaryotes do not have a nucleus humans fungi plants and protists fall under Eukaryotes and bacteria is an example of prokaryotes

Explanation:

hope this helps :) this took me a while! :)

an example of eukaryotic cells are animal, plant and protist. they contain a nucleus. however prokaryotes are bacterias with no nucleus. prokaryotic cells also have different sub cellular organisms for example ribosomes and flagella

HELP ASAP PLZZ // Which of the following is an example of the endocrine system maintaining homeostasis?

A) Detecting a pain stimulus and sending a signal to the spinal cord to perform an automatic response

B) Producing an excessive amount of hormones in the blood and not sending a signal to stop production

C) Releasing insulin to decrease blood sugar and releasing glucagon to increase blood sugar

D) Using sense organs to get information about the outside world and direct an appropriate body response

Answers

answer is C, it's the body regulating blood sugar
c, the body releases insulin to decrease blood sugar

Which water cycle processes usually cause a lowering in the water table? Which processes cause a rise?

Answers

Answer:

Explanation:

Lowering: During the summer months, the water table tends to fall, due in part to plants taking up water from the soil surface before it can reach the water table. The water table level is also influenced by human extraction of groundwater using wells; groundwater is pumped out for drinking water and to irrigate farmland.

Rise: Fluctuations in the water table level are caused by changes in precipitation between seasons and years. During late winter and spring, when snow melts and precipitation is high, the water table rises.

The water table typically drops throughout the summer because plants absorb water from the soil's surface before it can get to the water table.

What is Water table?

Human groundwater extraction through wells, including pumping out groundwater for drinking water and farmland irrigation, has an impact on the water table level as well.

Variations in precipitation over the course of seasons and years are what create fluctuations in the water table level. The water table rises in the late winter and early spring as snow melts and precipitation levels are high.

The  five steps of the nitrogen cycle, which are fixation or volatilization, mineralization, nitrification, immobilization, and denitrification. The fixation process is known as volatilization in this image because soil bacteria convert nitrogen gas (N2) into volatile ammonia (NH3).

Therefore, The water table typically drops throughout the summer because plants absorb water from the soil's surface before it can get to the water table.

To learn more about water table, refer to the link:

https://brainly.com/question/19719085?

#SPJ3

describe how the greenhouse effect interacts with the hydrosphere, atmosphere, and cryosphere

Answers

:

            loook over ur notes promise youll find thrm

Hydrosphere

Human contributions to greenhouse gases in the atmosphere are warming the earth's surface - a process which is projected to increase evaporation of surface water and accelerate the hydrologic cycle. In turn, a warmer atmosphere can hold more water vapor.

Atmosphere

This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.

Cryosphere

By reflecting sunlight, ice and snow have a cooling effect on the climate. Removing the ice to leave darker land or ocean reduces this cooling and so amplifies climate change. Thawing permafrost releases significant amounts of greenhouse gases, causing further warming.

Which list places the layers of the sun in the correct order from outermost to innermost?

Corona, chromosphere, photosphere
Photosphere, radiative zone, convective zone
Convective, chromosphere, corona
Radiative zone, corona, convective zone

Answers

Answer:

photosphere,radiative zone, convective zone (2)

Answer:Photosphere, convective zone, radiative zone

Explanation: i got it rii on the test i promise

The diagram shows an animal-like protist.



This is most likely which type of protist?

a sarcodine because it has a nucleus
a sarcodine because it has a pseudopod
a parasite because it has cilia
a parasite because it has a flagellum

Answers

Answer:

a sarcodine because it has a pseudopod

Explanation:

what would the waves on the near side of the breakwater look like if the opening in the breakwater were 5 times wider

Answers

Answer:

λ = 5.65m

Explanation:

The hardest question ever: What is truth?

Answers

the quality or state of being true.
a statement or phrase that is not false meaning it is true

Which statement is true of chloroplasts?

A. They transport glucose into the cell.
B.They convert light energy into chemical energy.
C. They convert the energy in glucose into a more usable form.
D. They are present in animal cells, but not in plant cells.

Answers

Answer:

B

Explanation:

Answer:

They convert light energy into chemical energy.

Explanation:

I had this on a test a few weeks ago and got it correct with this answer

Pls help................................

Answers

Answer:

from the lens

Explanation:

it easy gasbbsbsbbsbsbsbbsbsbssbsbssbsbsbbbssbsnns

Hehdnjdiens brisk w skxinenaiiz ebe

⦁ True or false?- Yogurt has good bacteria that is beneficial to humans

Answers

this is true :) i hope this helps
Answer: True

Explaination:

The atoms of gaseous helium are
A.
close together, moving around one another.
B.
far apart, moving fast, and bouncing off the container walls.
C.
close together, vibrating in a rigid structure.
D.
not moving at all.

Answers

Answer:

B) far apart, moving fast, and bouncing off the container walls

Explanation:

Gases molecules are the fastest moving matter and the most spread out.

It’s b gasses spread out and are moving more than a solid or liquid

I have scorpions in my home. What is the best way to 1: not get stung while awake and asleep. 2:make them leave and 3: keep them out????!!!! I live upstairs but l have seen 7+ i was stung by one and iv seen like 4 babies and my dad found more!!! Plz help me with my questions. Brainlyest if all are answered.

Answers

Either call someone or use cups to catch them and slip a piece of paper underneath them and release them outside (obviously I’m trained to do this so if you don’t know what type of a scorpion this is I would not suggest touching it as it could lead you to the hospital in a matter of minutes)
i would try calling someone to help get them out and honestly maybe try to find a friend or relatives house to stay at until you know they’re gone for sure so that you don’t have to worry about getting stung

How does a machine, such as a ramp, help make work easier?

A machine can help decrease the input force and the output force.
A machine can help increase the input force and the output force.
A machine can help increase the input force and decrease the output force.
A machine can help decrease the input force and increase the output force.

Answers

A machine can help increase the input force and decrease the output force.

Answer:

C

Explanation:

Just did the test

Hope it helps :)

Which of the statement(s) about eclipses is/are true?
A.The moon blocking out sunlight is what causes both a solar eclipse and a lunar eclipse, the difference is a solar eclipse the sun is totally blocked out, but in a lunar eclipse the sun is only partially blocked out.

B. A solar eclipse occurs only during 1st Quarter Moon and a lunar eclipse only occurs during 3rd Quarter Moon.

C.The earth blocking sunlight to the moon is a solar eclipse. The moon blocking sunlight to the earth is a lunar eclipse.

D. A solar eclipse occurs when the moon blocks out the sun casting a shadow on earth. A lunar eclipse is when the earth blocks sunlight casting a shadow on the moon.

Answers

Answer:

D.

Explanation:

A. Is wrong because the moon blocking the sun is a solar eclipse while the Earth blocking sunlight to the moon is a lunar eclipse.

B. Is wrong because solar eclipses occur during a new moon.

C. I s wrong because the inverse is true.

The Answer is D.
the sun is fully blocked out by the moon

Please help me with this question!

Answers

1) a decrease in the amount of groundwater.

An increase in the amount of runoff
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