For multicellularity to develop, there must be a mechanism of signaling among cells in the multicellular organism. Which of the structures in the cell membrane receives signals from the environment or from other cells?

Answers

Answer 1

Answer:

Answer:

Receptors

Explanation:

The cell membrane has receptors integrated or embedded into to it known as Membrane receptors or trans-membrane receptors . Membrane receptors are specialized proteins and act in cell signalling by receiving extracellular molecules by binding to them.

In multi-cellular organisms cell signalling allows speciation o groups of cells and when the signal is released the membrane receptors are the ones that will receive it.

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Give scientists clues about the kind of organisms that lived in an ancient environment

Answers

Answer:

The fossils are able to give scientists clues about the type of organism that lived in an ancient environment.

Explanation:

Fossils are able to give scientists clues about the type of organism that lived in an ancient environment. That's because fossils are records of living things that were alive hundreds and millions of years ago.

When we talk about fossils we immediately think of bones, but the fossils can be taken, feces, leaves, roots, hair, among other factors of a living organism, which was trapped in rocks for many years, kept conserved and can be studied and evaluated.

give scientists clues about the kind of organisms that lived in an ancient environment...... FOSSILS

Different modes of primate locomotion (7) encompass: a) Bipedalism, quadrupedalism, brachiation, leaping, galloping, swimming, flying b) Crawling, sliding, gliding, hopping, swinging, scuttling, slithering c) Walking, running, hopping, climbing, flying, swimming, burrowing d) Trotting, jumping, floating, wading, rolling, slinking, hopping

Answers

Final answer:

Primates, including humans, have different modes of locomotion such as bipedalism and brachiation due to specific morphological adaptations. These changes have been hypothesized to have evolved from our arboreal ancestors. Each primate subgroup, from lemurs to humans, has adapted in different ways to their environment.

Explanation:

Different modes of primate locomotion includes a series of movements like bipedalism, quadrupedalism, brachiation (swinging from branch to branch), leaping, and more. These locomotion modes are possible due to several morphological adaptations such as a rotating shoulder joint and thumbs and big toe widely separated from other digits, which allow for gripping branches. For instance, in bipedal locomotion, one leg is on the ground (stance leg) and the other is in the air (step leg) striding forward.

All primate species are believed to have descended from arboreal ancestors hence the adaptations for climbing trees. However, not all primate species today are arboreal. Large brains, stereoscopic vision, and a flattened nail instead of claws are among the specific characteristics of primates, especially those adapted to arboreal life.

Interestingly, humans are part of the primate order, which also includes lemurs, monkeys, and apes. These primate groups possess the necessary physical adaptations for different modes of locomotion, which allow them to live in diverse environments from tropical forests to savannahs.

Learn more about Primate Locomotion here:

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Animals in the tundra struggle to find food and keep warm. true or false.

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Answer:true

Explanation: just took the test

I'd argue for false.

Animals living in cold conditions have a small SA:Volume ratio, what decreases the heat loss to the surrounding.

These animals would have also adapted to finding various sources of food, otherwise they would go extinct.

The three stages of cellular respiration are glycolysis Krebs cycle and the electron transport chain when do cells exhibit all these stages

Answers

They exhibit all the stages when its the presence of oxygen only.

Answer:

The answer is glycolysis, krebs cycle, and electron transport chain

Explanation:

Sorry i'm late. It said this in my reading and i'm 100% correct.

How does a catalyst influence a chemical reaction?

Answers

Catalysts help drive and speed up chemical reactions.

A catalyst is what sparks the chemical reaction.

Select all that apply. Even though a rock and a dog are both made out of atoms, one is considered alive and one isn't. Select all of the characteristics that are present in living organisms. ability to reproduceability to move ability to pass on genetic information ability to use energy ability to maintain an internal balance

Answers

Answer:

The correct answer is ability to reproduce, ability to pass on genetic information, ability to maintain an internal balance and ability to use energy.

Explanation:

Biologist have tried to answer the differences between living and non-living beings and have proposed characteristics that are present in living organism which are :

cellular organization.
reproduction
should have heredity material-which can be passed
perform metabolism-reactions and use energy
homeostasis-maintains internal balance
growth.

Thus, selected options are the correct answer.

Ability to reproduce
Ability to pass on genetic information
Ability to use energy
Ability to maintain an internal balance (homeostasis)

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How does nuclear energy use differ from geothermal and solar energy use?a. Geothermal and solar energy both have a mining step, while nuclear energy does not. b. Geothermal and solar energy both require water, while nuclear energy does not. c. Geothermal and solar energy are both renewable, while nuclear energy is not. d. Geothermal and solar energy both generate a significant amount of waste, while nuclear energy does not.