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3 years ago

Which statement regarding the functioning of the cell membrane of all organisms is not correct?

Biology

2 answers:

diamong [38]3 years ago

6 0

The correct answer is C

rodikova [14]3 years ago

3 0

Answer:

C) the cell membrane forms a barrier that keeps all substances that might harm the cell from entering the cell .

Explanation:

The cells have a very thin "skin" that surrounds them, protects them from external factors and gives them individuality. It is the plasma membrane. Also known as plasmalema, it allows for a chemical composition inside the cell and a different one on the outside. This is essential for the performance of various functions in the body. The membrane also participates in the processes of recognition and communication between cells and allows the capture of signals from the so-called environment or extracellular environment.

It is true that the plasma membrane controls the exit and entry of substances into the cell, but unfortunately, it is not able to form a barrier that prevents all substances that can harm the cell from entering the cell.

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A geochronological scale measured in Millions of Years Ago or M Y A. Mesozoic era: Triassic period, 250 to 201 MYA, first dinosa

motikmotik

Answer:

D. The first flowering plants were introduced toward the end of the Mesozoic era.

Explanation:

Following the Paleozoic Era, the Mesozoic Era or Age of Conifers began approximately 250 million years ago. This major geological era brought about the ancestors of many of the plant and animal groups still in existence today.

The Mesozoic era is marked by 3 divisions:

the Triassic Period,
the Jurassic Period,
and the Cretaceous Period.

Animals and plants slowly recovered after the mass extinction in the Permian-Triassic extinction that led to the eradication of most aquatic marine species. They evolved to exploit varying niches in their environment, leading to a boom in terrestrial animals. Over time the planet's increasingly warm climate, abundant in atmospheric oxygen and carbon dioxide, contributed to the growth of diverse megaflora, that rapidly dominated the planet's terrestrial biosphere.

By the end of the Mesozoic Era, in the Cretaceous period, flowering plants (angiosperms) largely replaced the dominant seed ferns of the Triassic, and the conifers, cycads and gymnosperms of the Jurassic.

Varied dispersal mechanisms in angiosperms co-evolved with the evolution of certain types of fauna. Plants used animal life, including herbivorous reptiles and early mammal-like species to disperse large seeds.

6 0

3 years ago

Read 2 more answers

Does a steep curve on a line graph indicate a rapid or slow rate of change

MaRussiya [10]

Generally speaking if time is on the x-axis and the thing that’s changing is on the y-axis, a steep curve would indicate a rapid rate of change.

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3 years ago

Plants growing indoors tend to bend their stems so that their leaves turn toward a window. What does this suggestion about the l

Blababa [14]

The plants grow because of the energy transferred from the sun

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3 years ago

If a haploid cell has 50 chromosomes how much would the sex cell of the organism have?

Hitman42 [59]

25 !!!!!!!!!!!!!!!!!!!!

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2 years ago

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What is the probability that the couple would have

loris [4]

Go to the Prenatal Testing page for more details. If one parent has sickle cell trait (HbAS) and the other has sickle cell anaemia (HbSS) there is a one in two(50%) chance that any given child will get sickle cell trait and a one in two chance that any given child will get sickle cell anaemia.

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2 years ago