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3 years ago

What are lipids? And the three types of lipids: triglycerides, phospholipids, cholesterols?

Biology

2 answers:

ludmilkaskok [199]3 years ago

7 0

Answer:

Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. Examples of lipids include fats, oils, waxes, certain vitamins (such as A, D, E and K), hormones and most of the cell membrane that is not made up of protein. There are three types of lipids in the body, triglycerides, phospholipids and cholesterols. Triglycerides are also known as triacylglycerols and compose 95% of fat in the foods we eat. Triglycerides are also the main fats we store in our body. When you pinch an inch around your waist, you are pinching triglycerides. Phospholipids bring water and fat together and are called emulsifiers. Phospholipids make up cell membranes and lipid carrier molecules. cholesterols are found in tissues of animals and plants. The most well known sterol in our body is cholesterol. Cholesterol makes up bile, hormones and vitamin D.

Korvikt [17]3 years ago

3 0

Answer:

lipids are fatty acids that are water insoluble

Explanation:

oils,waxes,phospholipids

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Ellen held a substance that is comprised of elements that have been chemically joined. The substance now has different propertie

anyanavicka [17]

Answer:

I'm going to go with a mixture sorry If this is wrong

Explanation:

8 0

2 years ago

) Consider a pea plant- it has a gene controlling seed color- yellow Vs green; another gene controlling seed texture-smooth Vs w

lana [24]

Answer:

Yellow smooth - 9

Yellow wrinkle - 3

Green smooth- 3

Green Wrinkle - 1

Explanation:

Let the green color of the seed be depicted by "G" and the yellow color of the seed be depicted by "g"

Let the smooth the seed be depicted by "R" and wrinkled seed be depicted by "r"

F1 cross -

true breeding smooth green plant ( RRGG) and true breeding wrinkled yellow (rrgg)

F1 gamete will be RG, RG, rg, rg

F1 offspring will be RrGg , Thus all F1 offspring will be heterozygous smooth and yellow.

Thus, R is dominant over r and g is dominant over G

F2 Generation –

RrGg x RrGg

Gametes will be RG, Rg, rG, rg

RG Rg rG rg

RG RRGG RRGg RrGG RrGg

Rg RRGg RRgg RrGg Rrgg

rG RrGG RrGg rrGG rrGg

rg RrGg Rrgg rrGg rrgg

R is dominant over r and g is dominant over G

Genotypes are –

RRGG - 1 (Smooth Green)

RRGg-2 (Smooth yellow)

RrGG-2 (Smooth Green)

RrGg-4 (Smooth yellow)

RRgg- 1 (smooth yellow)

Rrgg – 2 (Smooth yellow)

rrGG – 1 (wrinkled Green)

rrGg – 2 (Wrinkled yellow)

rrgg – 1 (wrinkled yellow)

Yellow smooth - 9

Yellow wrinkle - 3

Green smooth- 3

Green Wrinkle - 1

4 0

2 years ago

What parts of the nervous system make up the central nervous system?

Elenna [48]

Answer:

The nervous system has two main parts:

The central nervous system is made up of the brain and spinal cord.

The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

hope it helps :)

6 0

2 years ago

Portal blood vessels connect two capillary beds found in the ________. A. hypothalamus and thalamus B. anterior pituitary and po

sdas [7]

Portal blood vessels connect two capillary beds found in the hypothalamus and anterior pituitary.

So, the correct option is C.

<h3>Hypothalamus-Pituitary Complex:</h3>

The "command center" of the endocrine system is assumed to be the hypothalamus-pituitary complex.
In addition to hormones that directly affect target tissues, this complex also secretes hormones that control the production and release of hormones from other glands.
Furthermore, the hypothalamus-pituitary complex controls the communications between the nervous and endocrine systems.
The hypothalamus-pituitary complex is frequently necessary for the translation of a stimulus into hormones that can start a reaction after it is received by the neurological system.
Additionally, the pituitary gland (also known as the hypophysis), a bean-shaped organ hung from the hypothalamus by a stem called the infundibulum (or pituitary stalk), is physically and functionally connected to the hypothalamus.
The sella turcica of the sphenoid bone of the skull serves as a cradle for the pituitary gland.
It has two lobes, the posterior pituitary (also known as the neurohypophysis), which is made of neural tissue, and the anterior pituitary (also known as the adenohypophysis), which is made of glandular tissue.

<h3>Anterior Pituitary:</h3>

The embryonic anterior pituitary develops from the gastrointestinal tract and moves toward the brain as the fetus grows.
The pars tuberalis is a thin "tube" that wraps around the infundibulum, the pars distalis is the most anterior, and the pars intermedia is next to the posterior pituitary.
Neurons secrete hormones from the hypothalamus, but blood arteries transport them to the anterior pituitary.
There is a capillary bridge that links the anterior pituitary and hypothalamus inside the infundibulum.
The hypophyseal portal system is the network that enables the delivery of hypothalamic hormones directly to the anterior pituitary without first passing via the systemic circulation.
The superior hypophyseal artery, a branch of the carotid arteries that carries blood to the hypothalamus, serves as the system's initial point.
The hypophyseal portal system is made up of the superior hypophyseal artery's branches.
The portal veins deliver hypothalamic releasing and inhibitory hormones into the anterior pituitary via a main capillary plexus.
Anterior pituitary hormones enter a secondary capillary plexus in reaction to hormones being released, and from there, drain into the blood circulation.
In the anterior pituitary, seven hormones are produced.
Separate hormones produced by the hypothalamus either promote or suppress the anterior pituitary's capacity to produce hormones.
The hypophyseal portal system is the route by which hormones from the hypothalamus get to the anterior pituitary.
Seven hormones are produced by the anterior pituitary.

Beta endorphin,
prolactin,
thyroid-stimulating hormone (TSH),
adrenocorticotropic hormone (ACTH),
growth hormone (GH),
follicle-stimulating hormone (FSH), and
luteinizing hormone (LH).

Because they regulate the activity of other endocrine glands, the anterior pituitary hormones TSH, ACTH, FSH, and LH are together known as tropic hormones.

Learn more about " Anterior Pituitary ":

brainly.com/question/14704975

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6 0

1 year ago

Please HELP!!!!!!!! 50 pts!

olasank [31]

Answer:

There is currently no consensus regarding the definition of life. One popular definition is that organisms are open systems that maintain homeostasis, are composed of cells, have a life cycle, undergo metabolism, can grow, adapt to their environment, respond to stimuli, reproduce and evolve.

Explanation:

4 0

3 years ago