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MakcuM [25]
3 years ago
9

Describe the structure of a phospholipid and a phospholipid bilayer. Indicate the polar and nonpolar parts of the structure for

each.
Biology
1 answer:
goldenfox [79]3 years ago
4 0
There are two important regions of a lipid that provide the structure of the lipid bilayer. Each lipid molecule contains a hydrophilic region, also called a polar head region, and a hydrophobic, or nonpolar tail region
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When you dig a water well for a house, you must pay per meter. Based on this image, how deep would you have to drill to reach an
Lerok [7]

14 is my best guess

6 0
3 years ago
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Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at
dalvyx [7]

Answer:

Option C is correct.

The information provided clearly shows that the babies with average weights form a stable selection, the average is favoured.

Stabilizing selection is occurring because the average is favored.

Explanation:

Concluding Part of the question

A graph entitled Percentage of Babies born at Different Weights has weight in pounds on the horizontal axis, and percentage on the vertical axis. A small percentage of babies are born at the low and higher birth weights, and a greater amount are around 7 to 8 pounds.

Which statement is a valid claim that could be made using the data in the graph?

A) Directional selection is occurring because the graph favors an extreme.

B) Disruptive selection is occurring because the two extremes are favored.

C) Stabilizing selection is occurring because the average is favored.

D) Biodiversity variation is occurring because there is an increase in trait variation.

Explanation

Stabilizing selection represents a form of natural selection where the intermediate variants of a trait, that is the non-extreme trait values are the ones that ensure the survival and subsequent formation of stable population of the species with this average traits.

In this question, it is given through the data from the graph that babies with very low or very high weights are less likely to survive.

And it is logical as very low weight babies are most likely to be very weak, fragile and susceptible to being on the wrong side of natural selection and very high weight babies have all sorts of overweight issues plus the fact that they have to literally be squeezed out of the womb through a very narrow canal, really pushing their oversight bodies to its limits very early making them also susceptible to being on the wrong side of natural selection.

The average weight babies on the other hand do not experience any of the issues discussed in the last paragraph, they are usually healthy and thus have a high survival rate. So, it is evident to see that the population of babies stabilizes based on a particular non-extreme trait value (baby weight) through stabilizing selection.

Hope this Helps!!!

8 0
3 years ago
Which principle of heat exchange is the most important explanation for why birds look larger in colder weather because they fluf
kotegsom [21]
Fluffing creates a pocket of air near the bird that acts as insulation.
5 0
2 years ago
Pls pls pls help. I will give BRAINIEST​
erma4kov [3.2K]

Answer:

A

Ametrine containing amethyst and citrine, from Bolivia

Abelsonite

Abenakiite-(Ce)

Abernathyite

Abhurite

Abramovite

Althausite

Althupite

Altisite

Alum-(K)

Aluminite

Aluminium

Alunite

Alunogen

Amakinite

Amarantite

Amblygonite

Ameghinite

Amesite

Amicite

Amphibole (mineral group)

Analcime (analcite)

Anandite

Anapaite

Anatase

Ancylite (mineral group)

Andalusite

Andersonite

Andesine

Andorite (IV/VI)

Andradite

Andyrobertsite

Anglesite

Anhydrite

Ankerite

Annabergite

Annite

Anorthite

Anorthoclase

Antarcticite

Anthonyite

Anthophyllite

Antigorite

Antimony

Antitaenite

Antlerite

Apachite

Apatite (mineral group)

Aphthitalite

Apophyllite

Aragonite

Arcanite

Archerite

Arctite

Arcubisite

Ardaite

Arfvedsonite

Argentite

Argutite

Argyrodite

Armalcolite

Arsenic

Arseniosiderite

Arsenoclasite

Arsenolite

Arsenopyrite

Arthurite

Artinite

Artroeite

Ashburtonite

Ashoverite

Asisite

Astrophyllite

Atacamite

Athabascaite

Atheneite

Aubertite

Augelite

Augite

Aurichalcite

Auricupride

Aurostibite

Austinite

Autunite

Avicennite

Avogadrite

Awaruite

Axinite (mineral group)

Azurite

Varieties that are not valid species:

Adamantine spar (variety of corundum)

Agate (variety of chalcedony and quartz)

Alabaster (variety of gypsum)

Alexandrite (variety of chrysoberyl)

Allingite (synonym of amber)

Alum

Amazonite (variety of microcline)

Amethyst (purple variety of quartz)

Ametrine (variety of quartz)

Ammolite (organic; also a gemstone)

Amosite (asbestiform grunerite)

Antozonite (variety of fluorite)

Anyolite (metamorphic rock - zoisite, ruby, and hornblende)

Aquamarine (light blue variety of beryl)

Argentite (high temperature form of acanthite)

Asbestos (fibrous serpentine- or amphibole minerals)

Auerlite (variety of thorite)

Avalite (chromian variety of illite)

Aventurine (variety of quartz)

3 0
3 years ago
What route did humans take from their first migration out of Africa to Australia?
shutvik [7]

Answer: People appear to have arrived by sea during a period of glaciation, when New Guinea and Tasmania were joined to the continent of Australia. The minimum widely accepted timeframe for the arrival of humans in Australia is placed at least 40,000 years ago. Many sites dating from this time period have been excavated.

Explanation: Hoped this helped!!!

4 0
3 years ago
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