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3 years ago

Energy must be transformed in ecosystems because ?

Biology

2 answers:

Sauron [17]3 years ago

6 0

Answer : As per the law of conservation of energy.

Energy can neither be created nor be destroyed, it can only be transformed from one form to another.

So, it is quite important that the energy transformations takes place in an ecosystem. The energy must be kept transforming from one form to another.

Damm [24]3 years ago

4 0

Energy cannot be destroyed or created and an organisms energy must go somewhere and come from somewhere.

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What is the human female reproductive system is adapted for? A. Production of zygotes in ovaries B. External fertilization of ga

victus00 [196]

Answer:

D. Transport of oxygen through a placenta to a fetus.

Explanation:

Zygotes are fertilized egg cell, zygotes aren't produced in the ovaries but ovums or egg cells are produced in the ovaries. So option A is false.

Fertilization is internal not external in human. Option B is wrong.

Production of milk happens in the mammary gland (the breast) not in the reproductive system. Option C is false.

Transport of oxygen through a placenta to a fetus. The placenta is a vascular organ which is implanted in the wall of the uterus (a part of the female reproductive system) and links to the foetus through the umbilical cord.

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3 years ago

Which organisms develop gills from pharyngeal arches and later develop lungs to breathe on land? Frog Scallop Salamander Scorpio

Sladkaya [172]

Answer:

frog

Explanation:

frogs live their first part of their lives in water so they need gills but after metamorphosis they live on land so they need lungs.

5 0

3 years ago

Read 2 more answers

What type of neuron of the parasympathetic division exits the brainstem?

Troyanec [42]

I believe it's Preganglionic Neurons

because in parasympathetic the pre-ganglionic neurons begin in the brain stem, and secretes Aceytolcholine as a neurotransmitter. ;)
I'm taking A&P2 this spring so I know haha

4 0

3 years ago

What is the name of the layer of cells directly below the cuticle

Scorpion4ik [409]

It is called the Epidermis. The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.

3 0

3 years ago

An antibody has been isolated that binds to F-actin but not to G-actin. What structural feature(s) of F-actin do you suppose the

galina1969 [7]

Answer:

F-actin is a double helical filament as opposed to G-actin,which is a globular protein .Each actin filament has two ends,called the plus and

the minus ends, which makes it recognizable from each other.This gives the structure a distinct polarity.

Explanation:

Actin is the most abundant protein that is found in almost all eukaryotic cells.Its a most important part cytoskeleton as its a monomeric subunits(size 42kDa) of two types of filaments i.e. microfilaments and thin filaments in cells. Actin is essentially required to maintain stability and morphogenesis of cell.It is involved in numerous significant processes such as endocytosis,cell division and migration.Actin is present in two forms:

•G-actin

•F-actin

The two forms of actin are different structurally.

G- actin is a globular shaped protein,usually present in free form(a monomer),having a tight binding site for another actin monomer.Each monomer has ATP. Upon polymerization of G-actin monomers, a polymer called F-actin filaments is form. This process is driven by hydrolysis of ATP.

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4 years ago