1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
spayn [35]
2 years ago
6

Fats that contain ____ double bonds are liquids at room temperature, whereas fats that contain ____ double bonds are solids at r

oom temperature.​
Biology
1 answer:
olganol [36]2 years ago
3 0

The answer ;  double,   single


In unsaturated oils, the double bonds cause the hydrocarbon chains to have kinks hence do not allow adjacent hydrocarbon chains to form enough hydrogen bonds between each other. Therefore, chains are not compact enough even at low energetic levels (at room temperature).

In saturated oils, the single-bond hydrocarbon chains have numerous hydrogen bonds between adjacent chains that they become compact at room temperature (when their molecules have low energy levels)  


You might be interested in
List 7 different organisms that live in a desert ecosystem. List them here:
Zigmanuir [339]

Answer:

1.barrel cactus 2.creosote bush 3.joshua tree 4.palo verde 5.soaptree yuca 6.gila monster 7.bobcat

Explanation:

they all live in the desert pluse they all benifit from each other. hope this help and sorry if is not corect I just used my knowlege.

4 0
3 years ago
MUST BE at least 350 WORDS 50 POINTS
Alona [7]

Answer:

Sickle cell disease (SCD) affects millions of people around the globe and is the 4th leading cause of deaths in children in many developing countries. It causes a number of health problems, such as attacks of pain, anaemia, swelling in the hands and feet, bacterial infections and stroke. Sickle-cell contributes to a low life expectancy in the developed world of 40 to 60 years.  

The disease results in abnormal haemoglobin - the oxygen-carrying protein found in red blood cells – giving the blood cell a rigid, sticky, sickle-like shape that hinders its oxygen-binding properties. These irregularly shaped cells can get stuck in small blood vessels, which can slow or block blood flow and oxygen to parts of the body. A blood and bone marrow transplant is currently the only cure for sickle cell disease, but only a small number of patients are eligible. For the rest, there's no cure but effective treatments can relieve pain, help prevent problems associated with the disease and prolong life.

70 years ago, researchers found a genetic connection to the anatomical abnormalities seen in blood cells. A mutation seemed to be causing the moon-shaped blood cells. The most severe form of the disease occurs when two copies of the mutation are inherited. However, patients with one sickle cell gene, referred to as sickle cell trait, usually do not have any of the signs of the disease and live a normal life, but they can pass the trait on to their children.

As with all inherited genetic diseases, you’d expect natural selection to weed out a gene that has such unpleasant consequences but with sickle cell disease, that doesn’t seem to be the case. Indeed, as of 2015, about 4.4 million people have sickle cell disease, while an additional 43 million have sickle cell trait. So what makes the disease stay in the human population?

Researchers found the answer by looking at where the disease was most prevalent. As it turns out, 80% of sickle cell disease cases occur in Sub-Saharan Africa or amongst populations having their ancestors in this region, as well as in other parts of the world where malaria is or was common. There was a long standing theory that the sickle cell trait – having only one sickle cell gene – didn’t cause discomfort and provided a bonus trait of preventing patients from contracting severe forms of malaria. Later confirmed - associating sickle cell to a 29% reduction in malaria incidence - this working theory would explain why the mutation stuck around in evolution. In 2011, researchers used mice to confirm the assumption.

Miguel Soares and Ana Ferreira of the Gulbenkian Institute of Science in Oeiras, Portugal, and colleagues found that haem – a component of haemoglobin – is present in a free form in the blood of mice with sickle cell trait, but largely absent from normal mice. By injecting haem into the blood of normal mice before infecting them with malaria, researchers found it could help guard against malaria. The mice did not develop the disease. Their results also showed that the gene does not protect against infection by the malaria parasite, but prevents the disease taking hold after the animal has been infected.

Explanation:

Sorry if I did or got anything wrong:(

I actually tried on this tho:)

3 0
2 years ago
From what source do cells get their food
Bas_tet [7]

Answer:

Beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules

Explanation:

4 0
3 years ago
QUESTION 1 Global temperature trends can be inferred from changes in ________ and ________. fossils; chemical isotopes found in
kirza4 [7]

1. fossils and chemical isotopes found in sediments and glacial ice

By studying the type of climate fossilized species preferred global temperature trends can be inferred. The changes in the concentration and type of isotopes are also an accurate measurement tool of these changes.

2. decrease in mortality because winter is warmer

The phenomenon known as global warming will bring more extreme weather. Thus, it is possible for some winters to be very cold and summers be very warm.

Even with warmer winters, the mortality will not decrease. Without a snow cover, pests such as mosquitoes and pathogens will thrive and live for longer periods of time. Thus, the spread of diseases will increase which will lead to potential increases in mortality.

3. all activities by humans affecting the Earth and its biosphere

Anthropogenic activities are all activities by humans affecting the Earth and its biosphere.

4. decline in sea ice

The main cause behind declining numbers of polar bears is the diminishing size of the sea ice. The bears use the ice as hunting ground where they stalk seals.

5 0
2 years ago
1. solid, outer layer of the earth
kvv77 [185]
1) crust
2)mantle
3) asthenosphere
4)core
5) hydrosphere
5 0
3 years ago
Read 2 more answers
Other questions:
  • How do neurons work?
    12·1 answer
  • Flatworms are acoelomates. Which of the following statement supports this fact?. . . A. A flatworm doesn't have a coelom.. . . B
    5·2 answers
  • He transfer of pollen from the male reproductive structure to the female reproductive structure is called
    10·1 answer
  • HELP PLEASE NOW I GOT TUTORING AT 6:00 PLEASE HELP!!!!! THIS IS URGENT
    6·1 answer
  • What biome is ferns, large woody vines, monkeys, sloths, and boa constrictors in ?
    14·2 answers
  • How can the biogeochemical cycle help a ecosystem
    11·1 answer
  • Diferencia entre las bacterias y los virus.
    12·2 answers
  • Which of the following can NOT preserve the remains of plants and
    8·2 answers
  • These channels act as the circulation or transportation system to move various
    9·1 answer
  • How does the mining industry make use of bacteria?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!