The membrane surrounding the cell *
A. nuclear envelope
B. plasma membrane
C. ribosome
D. endoplasmic reticulum

Answers

Answer 1
the answer is B! Plasma membrane!
Answer 2
B is the answer. Plasma membrane is also referred to as the cell membrane or as a selectively permeable membrane.

Related Questions

A relationship between living things that depend on the same
resources at the same place and at the same time is called

Answers

Answer:

competition

Explanation:

i searched it up

Answer:

Competition

Explanation:

Competition is a relationship between living things that depend on the same resources. The resources may be food, water, or anything else they both need. Competition occurs whenever the two species try to get the same resources in the same place and at the same time.

A cell without a nucleus is known as


Help thank you

Answers

Answer: prokaryotic cells

Explanation:

Answer: Prokaryotes are organisms whose cells lack a nucleus and other organelles.

Explanation:

Which organs are part of the excretory systems

Answers

Answer:Kidney

Explanation:

The Excretory system is responsible for the elimination of wastes produced by homeostasis. There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system.

An organs Kidney, ureter, urinary bladder and urethra are part of the excretory systems.

What is excretory system?It is biological system.The Excretory system eliminate excess wastes material from the body of the organism.It help to maintain internal chemical homeostasis.It prevent body for damage.Kidney filter the blood and filtrate obtained is urine.This urine is passes through ureter to urinary bladder and expelled out the body.

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Given that almost all organisms obtain energy from food by the process of cellular respiration, which is the most likely explanation for what prevents Earth from running out of oxygen?

Answers

Answer:

Oxygen cycles keeps the flow of oxygen at a constant rate.

Explanation:

The oxygen constitutes about 20% of the gaseous components in the atmosphere and it's being renewed continuously by the various microorganism and primary producers as green plants that use photosynthesis and converts the sunlight and carbon dioxide to water and releases oxygen. Oxygen cycle makes life possible as most of the elements are combined with oxygen in some way or another and are found on the lithosphere, hydrosphere, and atmosphere even biosphere hence its is present insufficient amounts.

Answer:

A.)     The net effects of the reactions of photosynthesis and cellular respiration are the opposite of one another, therefore the products of one are the reactants of the other, creating a cycle.

Explanation:  Hope this helps!!

A. The deer population exceeded the carrying capacity, providing predators with a surplus of food. As the deer population
decreased, so did the carrying capacity.

B. The deer population increased as the carrying capacity stabilized. As the carrying capacity decreased, the deer population
decreased.

C. The deer population increased rapidly, quickly exceeding the carrying capacity. As the deer population increased, there
was less food available, reducing the carrying capacity.

D. As the deer population reached a maximum so did the carrying capacity. As the deer population decreased, so did the
carrying capacity until the environment stabilized and the deer population could increase again.

Answers

Answer:

C seems to be the most reasonable answer.

Explanation:

The graph depicts that in an ecosystem the deer population increased rapidly, quickly exceeding the carrying capacity. As the deer population increased, there was less food available, reducing the carrying capacity.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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could someone please help me out on this? im confused​

Answers

Answer:

Dependent: Reduction

Independent: Solar Energy

Controlled: B

Explanation:

The dependent variable is what is being measured in the lab.

The independent variable is what is being CHANGED by the individual

The control is what is kept the SAME throughout the lab.

Hope this helped!

Un niño que ha enfermado de paperas o varicela, no desarrollará estas
enfermedades en una segunda oportunidad, porque:

I. la piel, mucosas y lágrimas impiden el ingreso de los microbios.

II. en el primer contacto adquirió anticuerpos.

III. interviene la inmunidad Adaptativa, la cual presenta "memoria".

IV. su sistema defensivo está preparado frente a una segunda exposición

a. I y II son correctas

b. III y IV son correctas

c. II, III y IV son correctas

d. I, II y III son correctas.

Answers

Respuesta:

La respuesta correcta es la C, ya que II, III y IV son correctas.

Explicación:

Nuestro sistema inmunológico nos defiende de agentes patógenos que pueden enfermarnos, y está compuesto por dos tipos distintos de inmunidades: la inmunidad innata y la inmunidad adaptativa.

La inmunidad innata es aquella que reacciona primero cuando se presenta una amenaza, atacando a los patógenos de manera inespecífica gracias a mecanismos que ya existían antes de que se desarrolle la infección. Cuando se trata de inmunidad innata, nuestras principales barreras de defensa son la piel y las mucosas, y las células de la respuesta inmune de mayor relevancia son los neutrófilos, entre otras.

Por el contrario, la inmunidad adaptativa, es de respuesta tardía y puede actuar de maneras diferentes dependiendo de cuál sea el patógeno invasor. Hay dos tipos de inmunidad adaptativa, la humoral y la celular. De la inmunidad humoral participan principalmente los linfocitos B, que fabrican anticuerpos específicos; mientras que la inmunidad celular es llevada a cabo por linfocitos T. La ventaja que tiene la inmunidad adaptativa en comparación con la innata es que es específica, diversa, más eficaz, y POSEE MEMORIA.

Las células de la inmunidad adaptativa presentan la capacidad de "recordar" cómo el cuerpo actuó ante una amenaza en el pasado para poder llevar a cabo un plan mucho más eficaz. Esta es la razón por la que las vacunas funcionan: porque se le inyecta a los individuos una versión débil del patógeno (por ejemplo, del virus que causa la varicela) para que el cuerpo "aprenda" a vencerlo para cuando se encuentre con ese microorganismo en un futuro.

What part of the cell gives ribosomes instructions on how to assemble protein?

Answers

Answer:

The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.

Which organelle would you expect to find in animal cells but not plant cells?

O A. mitochondrion

OB. ribosome

C. lysosome

O D. A. smooth endoplasmic reticulum

Answers

Answer:

Lysosome

Explanation:

The answer is C tehe

Choose all that apply. Carbohydrates contain the following elements:

Answers

Answer: carbon, hydrogen, and oxygen

Explanation:

hydrated carbon which results to sugar and oxygen

Explanation:

plz give me brainiest

Are porcupines amphibians, reptiles, or birds??? Please help 25 POINTS!!!

Answers

Answer:

rodents

Explanation:

they arent any of those things

Which is one function of a protein molecule?

Answers

Are you asking what proteins do ?

In a woodland ecosystem, the number of species of microorganisms in the soil that do not
harm plants increases. How does this rise in biodiversity affect the sustainability of the
ecosystem?
A The rise in biodiversity makes the ecosystem less sustainable.
B The rise in biodiversity makes the ecosystem more sustainable.
C The rise in biodiversity does not change the sustainability of the ecosystem.
D The rise in biodiversity makes the ecosystem only temporarily less sustainable.

Answers

Answer:

I think it’s B

Explanation:

Veteran trees are home to a variety of invertebrate species because a woodland's diversity is essential (insects, spiders, millipedes, centipedes, etc.), Thus, option B is correct.

What is the rise in biodiversity in woodland ecosystem?

In addition to lichens and fungi. Mature forests also favor bats among other species. Biodiversity in the woodland is a result of structural diversity.

Stability increases with biodiversity in ecosystems, species, and people. For instance, species with numerous populations that are adapted to a wide range of conditions and high genetic diversity are more likely to be able to withstand disturbances, disease, and climate change.

Generally speaking, expanding the variety of habitats or vegetation structures present at a site can be done to increase biodiversity.

Therefore, The rise in biodiversity makes the ecosystem more sustainable.

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Which of the following is an example of how an organism depends on Earth's natural resources for survival?
A.
Humans grow corn and wheat as food sources.
B.
Beavers use tree branches to build dams and shelters.
C.
Plants take in nutrients and groundwater from the soil.
D.
all of these

Answers

Answer: D.
Explanation: They’re all using earth’s resources.

FORENSIC SCIENCE!! When analyzing a strand of hair, investigators would first try to collect DNA from which general location?

Inside of the hair strand
The medulla
The hair tip/point furthest from the scalp
The point closest to the scalp

Answers

Answer:

The correct answer is - The point closest to the scalp.

Explanation:

In order to analyze a strand of hair investigators need to collect the DNA. To analyze a strand of hair the DNA must be nuclear DNA which can be found at the root of the hair near the scalp as the point, hair attached to the scalp there are cells that can provide the nuclear DNA. Any other section or the part of the hair strand does not contain the nuclear DNA so analyze DNA would not be possible.

What form of nitrogen makes up the majority (78%) of the earth’s atmosphere?

Answers

Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N2) and about 21% oxygen (O2). Argon, carbon dioxide (CO2), and many other gases are also present in much lower amounts

A __________
mutation occurs when a base in the DNA sequence is replaced by a different
base.

Answers

Answer:

Substitution Mutations

Explanation: A substitution mutation occurs when specific bases (A, T, C or G) in a gene are swapped for different ones. This type of mutation doesn't cause a difference in the number of bases like insertion or deletion mutations do. Substitution mutations just switch out one or more bases for different ones.

Hope this helps :3

A substitution mutation occurs when a base in the DNA sequence is replaced by a different base.

What do you mean by substitution mutations?

Substitution is a type of mutation in which one nucleotide is replaced by a different nucleotide. The term can also refer to the replacement of one amino acid in a protein with a different amino acid.

Base substitutions are the simplest type of gene-level mutation, and they involve the swapping of one nucleotide for another during DNA replication. For example, during replication, a thymine nucleotide might be inserted in place of a guanine nucleotide.

Substitution mutations can be good, bad, or have no effect. They cause three specific types of point mutation: silent, missense, and nonsense mutations.

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What does the term frameshift mean in science

Answers

Answer:

A frameshift mutation is a type of mutation involving the insertion or deletion of a nucleotide in which the number of deleted base pairs is not divisible by three.

Explanation:

Answer:

A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called nucleotides.

HOPE IT WILL HELP U!

Considering the body’s organization from atoms to organ systems, in which level of organization are proteins like collagen? Describe how this level of organization fits into the organization of the whole body.
pleaseeee helppppp

Answers

Answer:

According to the levels of organization in the body, the level of organization in which proteins, like collagen, are found is the molecular level, allowing the structural support and the performance of other essential functions.

Explanation:

Proteins are biological macromolecules, polymers of units called amino acids. These molecules belong to the molecular level of organization in living organisms.

The level of organization where proteins are found allows them:

Form an essential part of cells.Contribute to the construction of tissues and organs.Participate in metabolic reactions, as enzymes. Defense of the organism, in the form of antibodies.Regulation of vital functions, forming hormones.

Other functions of proteins are to integrate the cell membranes and perform transport function, to form receptors and to be an energy reserve.

Answer:

Why you looking down here, he clearly got it right    : )

What do seals and birds have in common in the food web?

Answers

Answer:

Well.

Explanation:

Well, for the most part, both seals and birds eat fish.

And, both seals and birds get eaten by sharks.

How does the use of cell technology benefit public health?

It makes it possible to discover new anticancer drugs.

It makes it possible to culture fewer types of cells.

It makes it possible to regulate medical research.

It makes it possible to avoid testing drugs in humans.

Answers

Answer: It makes it possible to regulate medical research.

Explanation: It helps inform everyone what to do in case of an emergency and can even reccommend the types of pills and shows all the symptoms as that the person is having.

Answer: How does the use of cell technology benefit public health?

It makes it possible to discover new anticancer drugs.

It makes it possible to culture fewer types of cells.

It makes it possible to regulate medical research.

It makes it possible to avoid testing drugs in humans.

Explanation:

A. It makes it possible to discover new anticancer drugs.this is the answer.

1. A rabbit can cover a distance of 80 min 5 s. What is the speed of the rabbit?

Answers

I did 80 divided but 5. Which gave me 16 so the speed of the rabbit is 16 mph

Answer:

[tex]\boxed {\tt 16 \ m/s}[/tex]

Explanation:

Speed can be found by dividing distance by time.

[tex]s=\frac{d}{t}[/tex]

The rabbit travels 80 meters in 5 seconds.

The distance is 80 meters and the time is 5 seconds.

[tex]d= 80 \ m \\t- 5 \ s[/tex]

Substitute the values into the formula.

[tex]s=\frac{80 \ m }{5 \ s}[/tex]

Divide.

[tex]s= 16 \ m/s[/tex]

The rabbit's speed is 16 meters per second.

is flour + water a colloid or solution?

Answers

Answer:

I belive it is a solution

Explanation: Hope this helped :D :3

Answer: ✅

Solution

Explanation: ✅

An example of a simple suspension would be flour in water, or sand in water. A colloid is a type of mixture intermediate between a homogeneous mixture (also called a solution) and a heterogeneous mixture with properties also intermediate between the two.

IamSugarBee

Which is not an example of a "living" life process?
A)Sensitivity
B)Resting
C)Growth
D)Nutrition

Answers

Answer:

Nutrition

Explanation:

--------------------

the answer is D please mark me brainliest

7. Why is the property of specific heat important to aquatic life?​

Answers

Answer:

Specific heat means amount of heat required to raise a temperature of a particular body, in case of aquatic life the specific heat plays an important role, the organisms living in an aquatic system require an certain body temperature to be maintained in order to survive.

Specific Heat raises the temperature of the water body resulting in Aquatic life to survive.

Pleaseeee help!!! This is due today!!

Write one page that tells me about your biome (Shrublands).

The pic is stuff I know already.

Answers

Some of the animals are blacktail deer, rabbits, foxes, coyotes, snakes and lizards, and all kinds of birds.

Which scientists played a role in developing the cell theory?
A Charles Darwin
B Theodor Schwann
C Robert Remak
D Robert Hooke
E Matthias Schleiden

Answers

The three scientists that contributed to the development of cell theory are Matthias Schleiden, Theodor Schwann, and Rudolf Virchow
So the answer might be E and B

The scientists that played a significant role in developing the cell theory are Theodor Schwann and Matthias Schleiden. Thus, the correct options are B and E.

What is Cell theory?

Cell theory was proposed by a German botanist M.J. Schleiden and a German zoologist T. Schwann. According to them, the cell theory states that:

All living organisms whether it is plant or animal is made up of cell.A cell is the smallest unit of all living organisms.The Cell is the structural and functional unit of organisms.

Charles Darwin was popular in the field of evolution. Hence, he is referred to as the father of evolution. Robert Hook was known in order to discover a cell in 1665.

Later in 1855, the cell theory is further refined by German biologist R. Virchow. According to him, all cells are arising from pre-existing cells.

Therefore, the scientists that played a significant role in developing the cell theory are Theodor Schwann and Matthias Schleiden. Thus, the correct options are B and E.

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Which of the following presents the best argument as to the role of the cow in this cycle?

Answers

Answer:

Cow dung helps in balancing the environment and kills germs

Explanation:

Cow dung is used for fertility of the soil. It is also used for the control of pest in the plants. When heated cow dung can be used to cook food where there are lack of wood available. Also when it is heated it releases the gases which kills germs present in the air.

Answer:

The cow eats plants and produces carbon dioxide through cellular respiration. The plants, which gain energy from the sun, then take carbon dioxide from the atmosphere and use it in photosynthesis.

Explanation:

I did the test

Which term best describes the result of plants and animals having more offspring than will be able to survive

Answers

Answer:

natural selection

Explanation:

This is what I found

natural selection is based on the following principles: In nature, organisms produce more offspring than are able to survive and reproduce.

Hope this helps

Answer: Overproduction.

Explanation:

Occurs when a species produces more offspring than will survive to maturity.

Which of the following represents the phases of mitosis in their proper sequence?

Answers

Answer:

Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase).

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