Which structure allows molecules to pass in and out of the cell?

Answers

Answer 1

The answer is the cell membrane in animal cells.

Answer 2

Answer:

b.chlorapast

Explanation:


Related Questions

The weather conditions at a given place over a long period of time is known as __________.

Answers

Answer:

Climate

Explanation:

Weather is like day to day, but climate is the average weather.

For example, the Climate in South Texas is hot, humid in the summer.

Did this help!?!

Answer:

Climate

Explanation:

Warm tropical water will tend to have a higher concentration of....
a, dissolved oxygen

b, zooplankton

c, Photic zone

d, salt

Answers

Answer:

Um B I hope my answer is right!!

Explanation:

Which is an organism with an integumentary system?
O A) mouse
OB) amoeba
O C) bacterium
OD) paramecium

Answers

Answer:C

Explanation: bacterium

Is the grass that grows in most lawns an annual biennial or perennial

Answers

The grass that grows on most lawns is annual biennial.

Answer:

perennial grasses

Explanation

Which of the following best describes how amino acids affect the tertiary structure of a protein

Answers

Answer:

B. The interactions of the different R group with other R groups and with their environment determine the tertiary structure of the protein

Explanation:

Protein is one of the four major biomolecules in living systems. Structurally, proteins consists of four levels namely: primary, secondary, tertiary and quartenary. The primary structure constitutes the AMINO ACIDS monomer that makes up the protein.

According to this question, the tertiary structure of the protein is formed as a result of the interaction of different R groups with one another and their environment. The R group is one of the four parts of the amino acid structure which is different for all amino acids.

These R groups interact in such a way that forms different bonds such as hydrogen bonds, disulphide bridges, hydrophobic & hydrophilic interactions etc, which leads to the tertiary structure of proteins (three-dimensional shape).

Answer:

B. The interactions of the different  R -groups with other  R -groups and with their environment determine the tertiary structure of the protein.

Explanation:

If a person did not eat for several days, which sequence of events would occur? Glycogen stores would be depleted first, then structural proteins, and then stored lipids. Lipid stores would be depleted first, then stored glycogen, and then structural proteins. Proteins stores would be depleted first, then stored lipids, and then stored glycogen. Glycogen stores would be depleted first, then stored lipids, and then structural proteins.

Answers

Answer:

The correct answer is "Glycogen stores would be depleted first, then stored lipids, and then structural proteins."

Explanation:

When an individual starts starving, the glycogen store is depleted first because that is the storage form of glucose. After depletion of the glycogen, the body then burns fat reserves in the body which are also good sources of calories. After prolonged period of starvation, the body then converts structural proteins (usually in the form of glucogenic amino acids) into fuels for energy.

It should be noted that NOT all the glycogen are used up immediately because the brain cells and the red blood cells prefer energy from glucose and hence the body reserves some glycogen strictly for them.

Answer:

its d on edge2021

Explanation:

Describe what happened when the Paramecium populations were mixed in the same test tube.

Answers

Answer:

When grown individually in the laboratory, they both thrive. But when they are placed together in the same test tube (habitat), P. aurelia outcompetes P. caudatum for food, leading to the latter's eventual extinction.

Explanation:

I hope you Understand the answer

Put the Pond Succession in Order from the pioneer community to the climax community

Answers

Answer:

it goes in order bcad

Explanation:

bcad

Photosynthesis occurs in which organisms?

Answers

Answer:

Photosynthesis occurs in green plants, seaweeds, algae, and certain bacteria. These organisms are veritable sugar factories, producing millions of new glucose molecules per second

Explanation:

The Earth's biodiversity is determined by the variety of all living organisms on Earth. In recent years, ecologists and other scientists have encouraged the preservation of global biodiversity through the protection and management of natural ecosystems. Preserving the biodiversity of the Earth is important because

Answers

Answer-:

Preserving the biodiversity of Earth is important because biodiversity increases the efficiency of ecosystems where every species, no matter how small, has an important role to play. A greater number of species of plants means a larger range of crops. Greater diversity of organisms guarantees ecological survival for all lifeforms

Explanation:

REASONS WHY PRESERVATION OF THE EARTH'S BIODIVERSITY IS IMPORTANT-

ECOSYSTEM PRODUCTIVITY - One of the key reasons we should continue to concentrate on biodiversity protection is that it helps to improve the efficiency of the ecosystem. Naturally, a properly working ecosystem would be more immune to extreme environmental factors, such as climate change.HEALTH DETECTIONS -The vast number of medical advances waiting to be made is one of the most significant reasons why we should continue working on saving biodiversity. To develop new cancer therapies and more, scientists use observations of plants , animals, and even microbes. As a matter of fact, all human drugs must first be tested before being tested on humans in laboratory animals. This is essential for determining their toxicity, dosing, as well as effectiveness. In some of the most remote sections of the planet, many of the animals used in these discoveries are also included.    Recreation and Natural Beauty - The value of natural beauty is another great explanation why we should continue focusing on protecting biodiversity. There are several historical sites around the country that need to be preserved to maintain their status for future generations to enjoy, such as the redwood forest.  These trees regularly have a lifespan of 600 years in the case of the redwoods. Some are as old as 2,000, too. Their growth is extremely sluggish, however. Wild and natural environments provide ways to get away from urban environments. In addition, people can enjoy outdoor activities such as bird watching, canoeing, hiking, and photography of nature.  The Ecosystem 'Survival -  With a few exceptions, to survive, each species on Earth relies on the services of other species. This partnership is part of the idea of what an ecosystem is. The relationship between soil, plants , and bacteria is a pertinent example. This is known as the period of nitrogen. Other examples which are important include -: Animal waste which nourishes the soil,   Crops also produce straw, which is an animal food source,   As natural nitrogen fixers, algae represent and    Aerate the soil with rats.Economic Benefits  -: Many advantages have been provided to humans through biodiversity, and many come in the form of products. These products are extracted and sold, and everything from crops to medicines is included.

Hence, preservation of the biodiversity of Earth is important from all aspects of life.      

True or false: the food chain of land animals begins with the soil

Answers

Answer:

True

Explanation:

The primary producers are the first trophic level of the soil food web. Organisms in this trophic level are photosynthesizers, including plants, mosses, algae, lichens and photosynthetic bacteria. ... Primary consumers obtain energy by eating primary producers or the residues they produce.

Hope this helps :)

The diagram shows a food web , In the food web - ( I NEED HELP ASAP )

Answers

krill, snails and abalones are primary consumers

refer to the figure below to answer the following question. layer j is ____layer n​

Answers

Answer:

I think it's younger than, not entirely sure though.


1. An ecosystem is best defined as a community of living things interacting with the ________ environment

Answers

Answer:

Explanation:

non living thing

endospores form during ____.
a) binary fission
b) respiration
c) sunlight hours
d) harsh environmental conditions

Answers

Answer:

A binary fission

Explanation:

Hope this helped

Answer : A

Hopefully this help :)

1.) The stage in mitosis in which chromosomes replicate themselves.

A. Anaphase
B. Metaphase
C. Prophase
D. Telophase

2.) The stage in mitosis that results in two new daughter cells being formed.

A. Anaphase
B. Metaphase
C. Prophase
D. Telophase

3.) The chromosomes like up in the middle of the cell during this stage.

A. Anaphase
B. Metaphase
C. Prophase
D. Telophase

4.) The process where a pair of chromosomes pair up and exchange genetic material.

A. Crossing over
B. Gamete cells
C. Replication
D. Reproduction

5.) In Meiosis II the cell division begins with how many daughter cells?

A. One
B. Two
C. Three
D. Four

6.) Which is NOT true of Meiosis?

A. Meiosis starts with half the number of chromosomes as Mitosis.
B. The genetic offspring are exactly like the parent cell.
C. There are 23 chromosomes from each parent cell.
D. Meiosis goes through 2 stages of division, Meiosis I and II.

Answers

Answer:

CDBABB

Explanation:

I think

The stage in mitosis in which chromosomes replicate themselves is Prophase

The stage in mitosis that results in two new daughter cells being formed is Telophase

The chromosomes like up in the middle of the cell during this stage is Metaphase.

The process where a pair of chromosomes pair up and exchange genetic material is Crossing over

In Meiosis II the cell division begins with how many two daughter cells.

The statement that is false of Meiosis is that the genetic offspring are exactly like the parent cell.

There are four stages of mitosis. They are:

Prophase MetaphaseAnaphase, and Telophase

Mitosis is simply known as a type of asexual reproduction that takes in body cells and it is where one cell divides to form two identical daughter cells.

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Which statement is true? a. Earth’s revolution is circular. b. Earth’s revolution is elliptical. c. Earth’s distance from the Sun is constant. d. Earth’s average distance from the Sun is 2 astronomical units.

Answers

Answer:

B

Explanation:

About how long ago did our solar system start to form?
O About 5 million years ago
O About 14 million years ago
O About 5 billion years ago
About 14 billion years ago

Answers

Answer:

about 5 billion years ago

Explanation:

Our solar system formed about 5 billion years a go from a dense cloud of interstellar gas and dust.

Our solar system started to form approximately 5 billion years ago. Option 3 is correct.

This estimation is based on scientific evidence and observations of the formation and age of celestial bodies in the universe. The formation of our solar system is believed to have been initiated by the gravitational collapse of a giant molecular cloud composed of gas and dust. As the cloud collapsed under its own gravity, it began to spin and flatten into a rotating disk-shaped structure known as the protoplanetary disk. The central region of this disk eventually formed the Sun, while the surrounding material coalesced to form planets, moons, asteroids, and comets.

The age of our solar system is determined through radiometric dating techniques, which involve measuring the ratios of radioactive isotopes in rocks and meteorites. These measurements, combined with other astronomical observations and models, provide a reliable estimate of the age of the solar system. The current scientific consensus is that the solar system formed approximately 4.6 billion years ago, placing its origin in the early stages of the universe's development. This understanding of the solar system's age is crucial for studying its evolution, understanding the formation of planets, and exploring the conditions necessary for the existence of life.

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which term best describes an enzyme

Answers

An enzyme is a biological catalyst that seeds up chemical reactions

An enzyme is a biological catalyst that seeds up chemical reactions.

What is Enzyme?

A biological catalyst called an enzyme is usually always a protein. It accelerates a certain chemical reaction in the cell. The enzyme is continuously employed during the reaction and is not destroyed. Each enzyme molecule found in a cell is unique and tailored to a particular chemical reaction.

All biological activities in living things involve chemical reactions, and enzymes regulate the majority of them.

Many of these processes would not occur at a noticeable rate without enzymes. Every element of cell metabolism is catalyzed by enzymes.

Therefore, An enzyme is a biological catalyst that seeds up chemical reactions.

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When opposites of two genetic parents are fertilized.

A) Heredity
B) Hybrid
C) Cross
D) Purebred

Answers

Answer:

I think your answer is D.) Purebred If Not not ill say C.) Cross

Explanation:

Hope This Helps :)

Answer: Hybrid

Explanation: The Merriam Webster dictionary definition of hybrid is "an offspring of two animals or plants of different subspecies, breeds, varieties, species, or genera" so in theory the answer would only make sense if it was hybrid since none of the others apply to having genetically opposite parents

in a few sentences tell me what you know about cells.

Answers

Answer:

Cells are the basic building blocks of living things. The human body is composed of trillions of cells, all with their own specialised function.

Explanation:

Cells are made up of energy, and are composed to the human body.

(Need help) If you Were a Scienctist,describe the information about parts of the universe that could be collected using electromagnetic waves

Answers

electric bells .... maybe I am not sure

Which of the following would be considered matter? Choose
all that apply.
A. light from the sun
B. milk in a carton
C. heat from a candle
D. sound of booming thunder
E. pebble on a beach

**for science

Answers

Answer:

B) milk in a carton and E) pebble on a beach. This is you answer

Explanation:

Many psychologists are suspicious of memories retrieved through hypnosis because:

Answers

The answer is: Because a subject might involuntarily manufacture a false memory and believe it is true.






Hope this help ❤️

At which points (A, B, C, or D) in the curve is light a limiting factor?

Answers

Answer:

D

Explanation:

what are 5 factors needed to support life(actually list the please)

Answers

Water, Oxygen, Food, Heat, Pressure


What is the speed of an angry goblin
if it flies 32 miles in 4 hours?

Answers

we have that from the Question"What is the speed of an angry goblin  if it flies 32 miles in 4 hours? " it can be said that  

the speed of an angry goblin  if it flies 32 miles in 4 hoursv=8miles/hour

From the Question we are told

What is the speed of an angry goblin  if it flies 32 miles in 4 hours?

Generally the equation for Speed is mathematically given as

[tex]V=d/t\\\\Therefore\\\\\v=d/t\\\\v=\frac{32}{4}\\\\[/tex]

v=8miles/hour

Therefore

the speed of an angry goblin  if it flies 32 miles in 4 hours

v=8miles/hour

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The speed of an angry goblin is equal to 8 miles per hour, if it flies 32 miles in 4 hours.

Given the following data:

Distance = 32 miles. Time = 4 hours.

To determine the speed of an angry goblin:

Speed can be defined as the distance covered by an object per unit time and it is usually measured in meter per seconds (m/s).

Also, speed has magnitude but no direction and as such it is a scalar quantity.

Mathematically, speed is given by the formula;

[tex]Speed = \frac{distance}{time}[/tex]

Substituting the given parameters into the formula, we have;

[tex]Speed = \frac{32}{4}[/tex]

Speed = 8 mi/hr.

Therefore, the speed of an angry goblin is equal to 8 miles per hour, if it flies 32 miles in 4 hours.

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Which of the following statements about signal deactivation is false?

A. Hormone response systems respond to very small changes in hormone concentration.

B. Second messengers are short-lived because cytoplasmic enzymes convert them to their inactive forms.

C. When G proteins hydrolyze GTP to GDP, they become inactive and halt production of second messengers

D. Phosphatases terminate phosphorylation cascades by adding phosphate groups to proteins in the phosphorylation cascade.

Answers

Answer:Phosphates terminate phosphorylation cascades by adding phosphate groups to proteins in the phosphorylation cascade.

Explanation:

If 10 cells undergo the cellular process of meiosis, how many daughter cells will result after Telophase II?
a. 25
b. 5
c. 10
d. 40
Which of the following completes the sentence below by describing an important result of meiosis?
A single cell divides into ___________ daughter cells.

2 identical
2 unique
4 unique
4 identical
A.4 identical
B.4 unique
C. 2 unique
D. 2 identical

Answers

Answer:

d. 40, B.4 unique

Explanation:

If 10 cells underwent meiosis, the result would be 40 daughter cells. This is because a cell that goes through meiosis goes through two divisions resulting in 4 daughter cells. This is because cells that undergo meiosis are gametes so they need to have half the number of chromosomes as the cells that go through mitosis.

The resulting daughter cells are unique, unlike the cells that go through mitosis. This is because the chromosomes in the cells experience something called crossing over during Metaphase I. Crossing over is when the chromosomes can swap pieces of DNA when next to each other. Cells in mitosis don't go through crossing over and are therefore identical.

What do you think is the most practical method of processing fruits and vegetables? Why?

Answers

Answer:

eating them

Explanation:

or throw them away

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