Which Protects plant and animal cells from outside agents

Answers

Answer 1
A plasma membrane. The plasma membrane lets certain things into the cell that it needs, but keeps other things out.

Related Questions

Help pleas due in 25 minutes. this is the 3 time that I have posted this question
In the middle of the night, you are awakened by hunger pains. You proceed to get up and go to the kitchen to have a couple of cookies and a glass of milk. Satisfied you go back to bed content. Explain in detail what tissues, organs, and organ systems are involved in completing that task. Be sure to include how the systems interact. The more detail the better! Start with getting up to get the food and include details on the steps in how the food gets digested.
. Explain in detail

Answers

Answer:

you would use your muscles from your legs and your body to get up from your bed and go to your fridge, your muscular system helps you up by being a structure for the muscles to apply force, you will use arm muscles for getting out cookies and milk. Then you will drink and eat your cookies and milk with your jaw muscle and send it down your esophagus to the intestines for the digestive system to break down your food. Then you will use your legs(muscles) to go back to your bed and sleep. (don't copy this whole thing it is not complete and you must add stuff so it is complete im just giving you an idea or the structure of this essay)

Which of The following are challenges to implementing sustainable farming practices? Select two correct answers.

a. increased need for fertilizer
b. lack of pollinating insects
c. higher initial costs
d. increased erosion
e. increase labor costs

Answers

Answer:

I think its A and E

Explanation:

^^^^^^

The challenges to implementing sustainable farming practices: higher initial costs;  increase labor costs.

What is  sustainable agriculture?

It is an integrated system which includes both plant and animal farming practices, which hence has a minimum effect on the environment. It involves using substances of natural origin and hence meets the needs without causing an adverse impact on the environment.

What are its advantages?It prevents pollution since the waste remains in the farm's ecosystem.There is a reduction in the production of waste, and the waste of one is used in the other.It saves energy as there is a lower requirement for non-renewable resources.It doesn't use agrochemicals.It involves methods that reduce soil erosion, like managing irrigation, covering the soil with tillage.What are its disadvantages?It takes more effort since the use of machines is minimal.Limited use of land and hence, mass production is not possible.What are the challenges?New farmers have to struggle with high labor demand since it involves less use of machines and hence more workers are required.Before harvesting their first crop, young farmers require a huge sum of up-front capital, which is even more for biologically diverse farms.

Hence the correct options are (c) and (e) higher initial costs;  increase labor costs.

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Question 1 of 10

Look at the following chemical reaction.
HR
H
H с. LO
N
N С H
с H
H с
H O
RH
HR H
H. с N с
N
C
1
11
H O RH
O
HT
+
H Η
Which process is happening in the reaction that is shown?
A. lonization
B. Acidization
C. Dehydration
O D. Hydrolysis

Answers

Answer:

b

Explanation:

acidulation

The given chemical reaction will be considered as dehydration reaction.

What is dehydration reaction?

A dehydration reaction seems to be a chemical reaction in which the participating molecule and ion lose water.

What is chemical reaction?

A chemical reaction would be a procedure that causes one group of chemical components to change chemically into another.

It can be seen that in given reaction water molecule is released during the reaction . Therefore, it can be considered as dehydration reaction.

Hence, the correct answer will be option (c)

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how did changes in earth's atmosphere allow for the evolution of life on earth?

Answers

Answer:

The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapor, ammonia, and methane. As the Earth cooled down, most of the water vapor condensed and formed the oceans.

Which organisms should be classified in more than one trophic level?

Answers

A trophies level pertains to the position of an organism in the food chain. Humans are the most dominant organism that belong to more than one trophies level. When we eat plants we become the secondary or the tertiary consumers.

Birds are also organisms that belong to more than one trophies level. When birds eat seeds they become the primary consumer, but when they eat insects they become the secondary or even the tertiary consumers.

How does the molecule marked C and D leave our body

Answers

C - By exhaling/ breathing out

When we hear the word bacteria, we probably think of disease transmission or illness. But bacteria provide many
health benefits to humans. All BUT ONE is a health benefit of bacteria today in the world of medicine.
A)
production of vaccines
B)
genetic engineering to produce insulin
fixing atmospheric nitrogen into a usable form
D)
probiotic added to food and vitamin supplements

Answers

Answer:

A is the correct option

Explanation:

In the pharmaceutical industry, bacteria are used to produce antibiotics, vaccines, and medically-useful enzymes.

The answer would be D

Andrea divided a group of a species of insect she found in her backyard into two groups based on antenna size. The insects with short antennae produced offspring with short antennae. The insects with long antennae produced offspring with long antennae and short antennae. Which of the following statements is most likely true?
A
The gene for short antennae is recessive and the gene for long antennae is dominant.

B
Length of antennae is random.

C
The gene for short antennae is dominant and the gene for long antennae is recessive.

D
Length of antennae is not a hereditary characteristic.

Answers

Answer:

......mm..............

Trees that lose their leaves during winter are called
A. Deciduous
B. Fern
C. Herbacious
D. Woody
E. Evergreen

Answers

Answer:

a. deciduous

Explanation:

hope this helps :) have a great day.

20. Scientists have discovered that there has been a reduction in the butterfly population in an ecosystem. After much
research, they have identified that the carrying capacity for butterflies has been decreased. If the scientists want to increase
the butterfly population, which action should they recommend?
A. removing primary producers
B. spraying of insecticides
C. increasing runoff
D. planting flowers

Answers

Answer:

i think the answer is planting flowers

Explanation:

this will allow more butterflies to have food.

Answer:

hello again

Explanation:

What is the most plentiful gas in our current atmosphere on earth?
A) oxygen
B) helium
C) hydrogen
D) nitrogen

Answers

Answer:

D) Nitrogen..............

Which statement BEST explains the role of DNA in the growth and specialization of an organisms?

Question 2 options:

A.DNA stores genetic information


B.DNA directly controls your body.


C.DNA controls which proteins are produced in each cell for different functions.


D.DNA creates all the same proteins in each cell of the organism's body.

Answers

C.DNA controls which proteins are produced in each cell for different functions.

different genes can be activated or inactivated that's why even though the cells that line your stomach contain the gene for ACTH synthesis they don't synthesize it

The questions are on the picture

Answers

Answer:

okkk.....

I will definitely study about it and tell u

Which of the following correctly organizes these genetic terms in order from smallest to largest?
chromosome, gene, nucleotide, DNA molecule
O nucleotide, gene, DNA molecule, chromosome
O DNA molecule, nucleotide, gene, chromosome
O DNA molecule, nucleotide, chromosome, gene

Answers

i believe that answer B. nucleotide, gene, DNA molecule, chromosome is correct :)

have a good day :D

Answer:

B

Explanation:

Lit

The mitochondria is known as the “powerhouse of the cell." Why?*
glucose is broken down into cellular energy (ATP).
lipids release energy as they form polypeptide bonds.
glucose is created through the process of photosynthesis.
proteins create energy as they are converted from sugars.

Answers

Answer: I believe the answer is glucose is created through the process of photosynthesis. I am not completely sure, I'm sorry.

Answer:

Explanation:glucose is broken down into cellular energy (ATP).

lipids release energy as they form polypeptide bonds.

glucose is created through the process of photosynthesis.

proteins create energy as they are converted from sugars.

What do scientists need to extract the DNA from? How much DNA is there?

Answers

Answer:

DNA extraction is a routine procedure used to isolate DNA from the nucleus of cells. When an ice-cold alcohol is added to a solution of DNA, the DNA precipitates out of solution. If there is enough DNA in the solution, you will see a stringy white mass.

Explanation:

Which discovery was essential to the concept that all life forms have cells as basic units?

Fungi, such as mushrooms and molds, get their nutrition primarily by

Answers

Answer:

A1) The invention of the microscope led to the discovery of the cell by Hooke.

A2) Decaying organic matter

Explanation:

__________

plzzzzz helppppp!!.......

Answers

I believe the answer is c

Someone help me pleaseeee

Answers

Answer:

oxygen and carbon dioxide

Answer:

B

Explanation:

oxygen and carbon dioxide

Which of the following is the main cause of earthquakes?

Answers

Answer:

Its plates shifting , making the ground ``shiver``

Explanation:

ILL GIVE BRANILIST PLEASE HELP
What do chemotherapy and radiation have in common?
a. Both affect healthy cells in addition to cancer cells
b. Both use drugs
c. Both use high-energy waves
d. Both affect only cancer cells

Answers

Answer:

I’m not sure if both do the rest but A. is right so ig A.

The components that make up the genetic code are common to all organisms. If a segment of a gene contains 27 nucleotides, none of which are stop or starts codons, how many amino acids does this segment code for?

Answers

Answer:

9 amino acids

Explanation:

A segment of a gene that has 27 nucleotides will code for 9 amino acids.

Each codon on the gene potentially represents an amino acid and a codon is made up of 3 nucleotides each. Hence, in order to find out the total number of amino acids that a gene segment with 27 nucleotides can code for, the number of nucleotides should be divided by 3.

    number of amino acids = number of nucleotides/3

                     27/3 = 9 codons/amino acids

A mutation that could be inherited by offspring would result from-?

Answers

Answer: Along with substitutions, mutations can also be caused by insertions, deletions, or duplications of DNA sequences. Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation.

Explanation:

A mutation that could be inherited by offspring would leads from a base substitution in gametes during meiosis. The correct option is D.

What is mutation?

Any alteration to a cell's DNA sequence. Alterations in cell division can result in specific mutations.

As can exposure to environmental DNA-damaging substances. Mutations may be negative, positive, or ineffective.

Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.

Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.

A base substitution in gametes during meiosis would result in a mutation that might be passed on to progeny.

Thus, the correct option is D.

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Your question seems incomplete, the probable complete question is:

A mutation that could be inherited by offspring would result from-?

What does this Transcribe to? (NEED HELP) TACTTCACGAGTGAGACT

Answers

Transcribe prolly 20 characters

Which of these was not characteristic of the first cells on earth

Answers

Answer:

Can you elaborate and I will be happy to get back to you with a response after!

Explanation:

Why do temperatures differ between air, land, and water?
(science btw)

Answers

Answer:

The ocean water isn't moving into or through the atmosphere as a result of the sun's heating of the water, convection isn't the process influencing air and water temperature difference. The heat of the ocean is being given off radiated into the air, as a result making the air substantially warmer

Explanation:

Which type of transport requires input of energy from the cell?

Answers

Homeostasis
Hope this helps:)
active transport is the answer

What is the role of cellular respiration in plants?

A.To produce ATP


B.To absorb carbon dioxide


C.To release oxygen


D.To form glucose

Answers

Answer:

To produce ATP

Explanation:

Mark as brain list answer

plz follow me.

The answer is: A. To produce ATP




What height in meters must the student climb in order to reach the top of the hill?

Answers

Answer: 256 or 300 sorry if i was incorrect

Explanation:

The student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.

What is the significance of the hill in the ecosystem?

The hill is the highest point on Earth and plays an important role in ecosystems because it can provide a variety of different habitats for plants and animals as well as act as barriers that separate different ecosystems, such as the forest ecosystem present on one side of the hill from the grassland ecosystem present on the other side of the hill, and it is also a depositary of minerals and other resources.

Hence, the student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.

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Tigers running across the field. what would happen if the hydrogen ion pumps in the Tigers mitochondria stopped functioning?

Answers

it probably dies of that because that seems intense so maybe it will die

Answer: A

Explanation:the tiger would not be able to keep running

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This symbol means that both sets could have the same elements. (A B)TrueFalse What happened in Santa Fe on August 18, 1846?a.Stephen Kearney led soldiers into Santa Fe and claimed that were now American citizens.b.Stephen Kearney led soldiers into Santa Fe to secure New Mexico for Mexico.c.Stephen Kearney led soldiers into Santa Fe to suppress a revolt in Taos.d.Stephen Kearney told traders they were forced to rely on themselves for protection. pls help (15 pts)whats the value of p What is the y-intercept of the parabola defined by y=2x2+6x8 and what is the equation of the axis of symmetry? Assignment Summary For this assignment, you will construct a scientific model of the water cycle to show how water is recycled through an ecosystem. Once you have drawn your model on a poster board, you will write one to two paragraphs explaining how water is transferred within and between organisms and the environment. Background Information Water is a very important compound. Organisms need water to carry out life-maintaining processes such as growth and development. Without water, living things will not survive. Water continually flows among the atmosphere, land, water, and living organisms. This process, called the water cycle, allows water to be recycled as it moves through Earths spheres. Materials Assignment Instructions Step 1: For this project, you are expected to submit the following: 1. Your model of the water cycle 2. One to two typewritten paragraphs describing the water cycle Step 2: Prepare for the project. a) Read through the guide before you begin so you know the expectations of this project. Pay particular attention to the instructions you need to follow to create a model on your poster board. b) If anything is not clear to you, be sure to ask your teacher. Step 3: Gather materials for the model. a) Start with a blank poster board. Be sure to put your name on it. b) You may either draw the parts of the water cycle or print images to construct a model on your poster board. Gather any drawing tools that you will need, or print any images you want to use. Step 4: Create a model of the water cycle. a) Your model should include bodies of water such as lakes and oceans, organisms, air, and land. b) Draw arrows indicating how water moves within an ecosystem and between organisms and their environment. Be sure to include the Sun and gravity in your model. c) Include short phrases on your poster that summarize what occurs at each stage of the water cycle Step 5: Write a paragraph describing the water cycle. a) Type one to two paragraphs describing the full water cycle. Be sure to use full sentences and proper grammar. Part A: Which sentence best identifies the theme of the text "Two Friends"?A: War can transform even good people into immoral beasts.B: Govemment is a source of mayhem and destruction rather than security.C: Conflict leads to violence and death only when people allow it to do so.D: People are as powerless during war as animals are in the hands of humans. On a coordinate plane, a line goes through points (negative 3, negative 3) and (0, 3).What is the slope of the line on the graph?11/223do it and I will give you a suprise plzzzzz helppppp!!....... What would you recommend to a singer whose throat is scratchy before a performance? Drink milk Eat spicy foods Drink water Eat chocolate How would you use a table to graph 3x + 4y = 23? what are all values of x for which the series shown converges? Helpppppppppppppppppp question is in the picture pls help me. much appreciated What the answer I need help 15 points! Answer only if you can please!1. Have you ever grabbed the handle of a hot metal pan? Why did it feel hot to you?2. What would happen if a person who is wearing a heavy winter jacket were to place a thermometer inside the jacket next to his or her skin? What would happen if we took the same jacket, after it had been hanging in a closet, and placed a thermometer inside?3. How do you think the transfer of thermal energy causes unpopped popcorn kernels to pop? Rafael said 5 equals 5. Is Rafael correct? Use the number line and words to support your answer. Which transition word or phrase would complete the following sentence.yesterday we hiked up the mountain later in the day ______, we had to stop before we reached the summit.A. on the contrary B. nearby C. In addition D. As a result Marta received $5 for helping her dad in the back yard. She spent $2.40 on drinks and $1.33 on snacks. A)Write an equation to show how much money she has left. Remember to define your unknown. B)Solve the equation from part (a). Show your work 30 is 2/3 of what number Complete each sentence with a partitive or indefinite article.1.Elle mange___croissant.2.Il ne prend pas___boisson gazeuse.3.Est-ce qu'il y a___soupe?4.Nous ne mangeons pas___chocolat.5.Il n'y a pas___lait pour le caf.6.Nous buvons___ limonade.7.Il y a___fromage sur la table.8.Tu commandes___frites.9.Ils vont manger___ sandwich au jambon.10.Oui, je bois___eau minrale.