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adoni [48]
3 years ago
8

______________ came to mean the study or practice of improving the human race through selective breeding and, sometimes, restric

tive immigration policies.
Biology
1 answer:
Nataliya [291]3 years ago
7 0
<h2>Human Biology </h2>

Explanation:

  • <u>Negative eugenics </u>came to mean the study or practice of improving the human race through selective breeding and, sometimes, restrictive immigration policies
  • Our bodies comprise of various <em>natural biological systems</em> that complete explicit capacities vital for ordinary living
  • The activity of the <em>circulatory system</em> is to move blood, supplements, <em>oxygen, carbon dioxide, and hormones, around the body</em>
  • <em>It comprises of the heart, blood, blood vessels,arteries and veins.  </em>
  • People are an essential piece of biological systems
  • Biological systems give an assortment of advantages to individuals, including including <em>provisioning, regulating, cultural, and supporting services. </em>

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D.) ovary oviduct uterus then vagina

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3 years ago
What contributes to cell membrane fluidity? Proteins and lipids exist as separate but loosely attached molecules that can move a
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Answer:

Proteins and lipids exist as separate but loosely attached molecules that can move around

Explanation:

Cell membranes are mainly composed of lipids, proteins, and also carbohydrates. Phospholipids are the most abundant type of lipid and the main constituent of the cell membranes. Membrane proteins are divided into two types according to their interactions with the cell membrane: 1-integral (intrinsic) and peripheral (extrinsic) proteins. These peripheral proteins are loosely attached by ionic bonds or calcium bridges with the phosphate heads of the phospholipids; whereas integral membrane proteins contain side chains that interact with fatty acyl groups of the phospholipids. Cell membrane fluidity indicates how easily lipids (e.g., phospholipids and cholesterol) and proteins (e.g., intrinsic proteins) diffuse laterally in the cell membrane. This fluidity is affected by the amount of cholesterol, temperature, and the ratio of unsaturated to saturated fatty acids. Saturated fatty acids have no double bonds in the hydrocarbon chain, whereas unsaturated fatty acids have at least one double bond (these double bonds increase fluidity). Moreover, higher temperatures increase membrane fluidity, whereas cholesterol molecules function to regulate membrane fluidity: at high temperatures cholesterol molecules stabilize the membrane, whereas at low temperatures intercalate between phospholipids, thereby preventing them from clustering together.

6 0
2 years ago
Which epidermal layer is not distinguishable in thin skin, and stains poorly in thick skin?
Marizza181 [45]
<span>the stratum lucidum is an epidermal layer. It is a clear layer of dead skin cells. Even under a microscope it is not visible, only under a light microscope can it be viewed. It is only found on the palms of ones hands and the soles of the feet.</span>
4 0
3 years ago
Read 2 more answers
What is used to break the bonds of nodules??
olga_2 [115]
<span> </span><span>Bean roots will have no nodules if there are no compatible Rhizobium bacteria in the soil. The nodule is a symbiotic relationship between the plant and the bacteria. Nitrogen fixing root nodules are pinkish in color. Green root nodules indicate actively reproducing bacteria that are not fixing nitrogen. The number of nodules depends on the amount of innoculant (Rhizobium) available in the soil. Look at the photos and make an estimate like x nodules per y linear inches of root. Hope this helps.

The edible part of the radish root functions as a food storage organ. The string parts of the radish root function as normal roots absorbing water and dissolved nutrients. Bean roots have no modifications for food storage. Radish roots don't have nodules. The radish root is a "tap root". The bean root is a "fiberous root" 

Beans don't grown faster than radishes because of the root nodules. Bean seeds are large. Radish seeds are small. The energy stored in the bean cotyledons helps the seedling get a fast start. The radish gets a slower start from less stored energy.</span>
5 0
3 years ago
Use the drop-down menus to put the events of the light-dependent reaction of photosynthesis in the correct order.
mash [69]

Events of the light-dependent reaction of photosynthesis starts with the absorption of sunlight and ends with ATP production.

<h3>Events of  light-dependent reaction</h3>
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Learn more about light-dependent reaction here: brainly.com/question/2114531

8 0
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