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1 year ago

9

Vitamin D is an organic molecule that regulates the absorption of calcium by the body. Which of the following elements is most c

ommon in a molecule of vitamin D?
A. aluminum
B. carbon
C. magnesium
D. sodium

1 answer:

Hoochie [10]1 year ago

3 0

The element that is most common in Vitamin D is CARBON.

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Neurotransmitters transmit ____________ between ____________ , from neurons to glands, from neurons to organs, and from neurons

astraxan [27]

Answer:

1. Nerve impulse

2. Neurons

Explanation:

Neurotransmitters are compounds with low molecular weight. They are secreted by axon terminals of the neurons. The released neurotransmitters then bind to the receptors located on next neuron or on the surface of muscle cell.

The function of neurotransmitters is to carry the nerve impulse from presynaptic neuron to the postsynaptic neuron or from neurons to the effector organs such as muscles and glands.

For example, neurotransmitters are released into the synaptic cleft to transmit the nerve impulse between neurons.

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1 year ago

Which statement gives an advantage of multicellular organisms?

Illusion [34]

Answer:

D

Explanation:

Bacteria can reproduce quickly which is why it is sometimes hard to get rid of a cold.

Both types of cells carry out necessary functions to survive.

Size does not define a cell.

Multi-cellular organism have complex cell structure in which each cell has the ability to tend to it's necessary functions.

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3 0

1 year ago

Read 2 more answers

In humans, black hair (B) is dominant over red hair (b) and having six fingers (F) is dominant over having five fingers (f). Sal

Lera25 [3.4K]

Answer:

Genotype & Phenotype

BbFf - 4

bbFf - 4

Bbff - 4

bbff- 4

Phenotype

BbFf – Black Hair with six fingers

bbFf – red hair with six fingers

Bbff – Black hair with five fingers

Bbff – red hair with five fingers

Explanation:

Given

Black hair allele is represented by "B"

Red hair allele is represented by "b"

Trait of having six fingers is represented by "F"

Trait of having five fingers is represented by "f"

Also , B is dominant over b and F is dominant over f

Genotype of sally having black hair and five fingers when her father has red hair is Bbff

Genotype fo Bill having red hair and six fingers when his mother had five fingers is bbFf

Bbff * bbFf

Bf bf Bf bf

bF BbFf bbFf BbFf bbFf

bf Bbff bbff Bbff bbff

bF BbFf bbFf BbFf bbFf

bf Bbff bbff Bbff bbff

Genotype & Phenotype

BbFf - 4

bbFf - 4

Bbff - 4

bbff- 4

Phenotype

BbFf – Black Hair with six fingers

bbFf – red hair with six fingers

Bbff – Black hair with five fingers

Bbff – red hair with five fingers

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2 years ago

Describe how you would correctly prepare a microscope slide of an insect wing for viewing under the microscope.

klio [65]

Make a paraffin block with that wing present inside. Now make fine slices of that block. Take one fine & even slice on a slide & then stain it.

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2 years ago

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dybincka [34]

Answer:

I expect that there will be a small number of male turtles and a large amounts of female turtles. If there are small amounts of male sea turtles, then reproduction of these turtles will be difficult and maybe a threat to their species.

Explanation:

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1 year ago