The true statement about cholesterol is that; " It impacts membrane fluidity."
Cholesterol is one of the steroids in the body and serves as a constituent of many hormones. Cholesterol consists of a hydrophilic and a hydrophobic part hence it is able to interact both with aqueous and nonpolar environments.
Cholesterol impacts membrane fluidity in the sense that it regulates the direction of membrane fluidity. At high temperatures, cholesterol raises the membrane temperature whereas at high temperatures, it intercalates between phospholipids thereby preventing stiffening.
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What aspect of a muscle cell
allows movement in the body?
A. its shape is short and blunt
B. fibers within the cell move back and forth
allowing the cell to stretch and shrink
C. there are no organelles which allows it to
move easier
Answer:
B
Explanation:
Nearly all movement in the body is the result of muscle contraction.
Help!!
How did reduced methane concentrations in the atmosphere affect Earth?
Earth warmed.
Earth cooled.
Volcanic activity decreased.
Volcanic activity increased.
Answer:
Earth cooled
Explanation:
Here are all the answers for that quick check:
1. Which option orders the events chronologically, from earliest to latest.
Answer: Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve.
2. Which forms of life were dominant in the Mesozoic era?
Answer: Reptiles
3. How did the success of photosynthetic bacteria change Earth’s atmosphere?
Answer: increased oxygen concentration
4. How did reduced methane concentrations in the atmosphere affect Earth?
Answer: Earth cooled.
5. Which characteristic defines the Paleozoic era?
Answer: Animals with shells and hard parts were dominant for the first time.
You're welcome.
Answer:
Earth cooled.
Explanation:
The reduced methane concentrations in the atmosphere affect Earth :
Particles of gas and dust released into the atmosphere during a volcanic eruption affect the climate. Most of the particles emitted by the volcano cool the planet by blocking incoming solar radiation. The cooling effect can last from months to years, depending on the nature of the eruption.Therefore, the Earth is cooled.
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PLS HELP ME
In 3-5 sentences, describe the advantages and disadvantages of these maps in modeling mitosis.
Answer:
Explanation:
you haven't put the image, however mitosis is the splitting of one cell into two identical daughter cells (duplicating the DNA) - hope this helps!
why do biomes differ
Answer:
Biomes differ in the amount of precipitation they receive, their temperatures, and the life that inhabits each biome.
Explanation:
Biomes differ in the amount of precipitation they receive, their temperatures, and the life that inhabits each biome.
For example, the types of organisms found in the subtropical desert differ drastically from the organisms found in a tropical rainforest. Each organism is well-adapted to its environment, and a subtropical desert and tropical rainforest are two very different biomes.
If you look at the graph below, you can see that the tropical rainforest has high average temperatures and high precipitation, whereas subtropical deserts have much lower precipitation and great variation in average temperature.
Explanation:
Why is the myelin sheath so important for sending signals throughout our body
Answer:
Myelin can greatly increase the speed of electrical impulses in neurons because it insulates the axon and assembles voltage-gated sodium channel clusters at discrete nodes along its length. Myelin damage causes several neurological diseases, such as multiple sclerosis.
Explanation:
this is the correct answer happy
Which color reflects heat radiation the best? Red
Blue
White
Answer:
White
Explanation:
There is a strong relationship between organism complexity and genome size in eukaryotes. Select one: True False
The statement 'There is a strong relationship between organism complexity and genome size in eukaryotes' is FALSE. The genome of an organism is all genetic information of that individual.
The genome is represented by all nucleotide (DNA) sequences that form the genetic makeup of an organism.
The genome is composed of protein-coding genes and non-coding sequences, which often exhibit regulatory functions.
The proportion between protein-coding sequence and non-coding sequence is not linear, thereby the complexity (i.e., the amount of different types of proteins encoded by the genome) and genome size in eukaryotes is variable among species.
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Which choice would have the smallest impact on climate change when purchasing apples at the store?
Answer: Varies
Explanation:
Something that comes to mind would be if a customer buyed a plastic bag after purchasing the apples.
As a cell becomes smaller, it’s surface area-to-volume ratio…
Answer:
DECREASES
Explanation:
What is the genetic makeup of offspring resulting from mitosis?
A. They are genetically identical to the parent cell.
B. They have half as many chromosomes as the parent cell.
C. They have twice as many chromosomes as the parent cell.
D. They share half their genes in common with both parents.
Answer:
Mitosis means the offspring is identical! So answer is A!
In respiratory system, most of the dirt/ microbes in the air are trapped by
Answer:
Cilia propel a liquid layer of mucus that covers the airways. The mucus layer traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs.
give difference Himalaya rivers- Peninsula river?
Answer:
- Himalayan rivers get water from snow and rain,
-whereas Peninsular rivers are fed by rain only.
-Himalayan Region is the shape of an arc.
- The Peninsular Plateau is in the shape of a triangle.
-Himalayan Region is made up of sedimentary rocks
- The Peninsular Plateau is made up of metamorphic and igneous rocks.
Which of the following examples best describes a disturbance that is likely to result in significant, long-lasting changes to an ecosystem?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
A frost in late spring kills some of the earliest budding plants and flowers in a field.
(Choice B)
B
Tens of thousands of geese rest for a week at a large lake during their annual migration.
(Choice C)
C
The failure of a 60-year-old beaver dam floods a downstream meadow.
The failure of a 60-year-old beaver dam floods a downstream meadow best describes a disturbance that is likely to result in significant, long-lasting changes to an ecosystem
It cause immense damage to the property, habitats due to water flooding over them.What is a dam?A dam is a barrier that stops or restrict the flow of surface water or underground streams.It is build across the stream or river to hold water back.It can used to store water, control floods and generate electricity.
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The processes by which a molecule can be extracted and processes by which a molecule can be isolated
Answer:
Extraction is the first step to separate the desired natural products from the raw materials.
solvent extraction, distillation method, pressing and sublimation
Isolation can be achieved from polyherbal formulation but it will be rather difficult and would involve complex purification steps .
Explanation:
Have a great day!
Hey, I need help with this question:
Answer:
CNN
Explanation:
The answers are
A: Cholesterol
B:
Integral protein
C: Glycolipid
D: Glycoprotein
Answer:
sis / bro
whats the question pls type in the comment of mine and i will say the answer
What is photosynthesis?
josephconingco10! Please help :)
in simple,
Preparation of food by plant is called photosynthesis.
Precipitation moving from higher to lower elevations on the ground is called___?
Answer:
Evaporation
Explanation:
Evaporation is the process in which percipitation moves higher to lower elavations on the ground. Evaporation is when the sun heats up and dries out the water causing it to rise up to the clouds which then causes rain for another time. ( I am not completely sure)
a skateboard with unbalanced forces. A bicycle with balanced forces
Answer:
bicycle I may be wrong sorry
Scientists are uncertain about the reasons for the dodo’s extinction.
Suggest an explanation for this uncertainty.
If a DNA molecule had a total of 1000 nucleotides and 200 of these are adenines, what would be the total number of pyrimidines in this molecule?
If a DNA molecule had a total of 1000 nucleotides and 200 of these are adenines, then the total number of pyrimidines is 500. Adenines (A) are purine bases.
DNA is a double helix molecule composed of two long chains of nucleotides that are held together by hydrogen bonds.
In DNA, there are four types of nucleotides, each containing one different nitrogenous base: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T).
Adenine (A) and guanine (G) are purines, whereas cytosine (C), thymine (T), are pyrimidines.
According to the base pair rules, Adenine always pairs with Thymine, whereas Guanine pairs with Cytosine.
In this case, the number of A + T is equal to 400 (200 + 200) and the number of G + C is 600 (300 + 300), thereby the number of pyrimidines or C + T is equal to 500 (200 + 300).
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Which habitats are the most common on you neighboorhood? Why do you think this is so?
What is special about each organism in the ecosystem
What do all living things have in common? All have cells with a nucleus. All have a genetic code. All are made of two or more cells. All can perform photosynthesis.
Living beings are organisms that can respire, respond, grow, reproduce, and are made of cells. All living things have a genetic code. Thus, option B is correct.
What is a genetic code?A genetic code is a sequence of proteins and nucleic acids that act as a hereditary molecule that transfers the traits and characteristics to the progeny.
The code can be in the form of DNA or RNA and provides information about the genotype of the organisms that were passed from their ancestors.
The genetic code is in the form of triplets and is a universal system that codes for the same proteins in all organisms. It consists of the nitrogenous bases that through translation make the amino acids.
Therefore, option B. all living organisms have a genetic code.
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define newtons first law
tell this answer fast hcscteoxnp bebrainly
Answer:
Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
which of the following can cause polyploidy
A : a single egg fertilized by two sperm
B: a diploid egg being fertilized by a normal sperm
C: a normal egg being fertilized by a diploid sperm
D : all of the above
Explanation:
a polypiody is a condition that has more than 2 sets of chromosomes. common in plants..
How do endocrine glands send messages to other organs?
Answer:
Endocrine glands make chemicals called hormones and pass them straight into the bloodstream. Hormones can be thought of as chemical messages. From the blood stream, the hormones communicate with the body by heading towards their target cell to bring about a particular change or effect to that cell
The right and left coronary arteries are the first branches off the a. aorta. b. superior vena cava. to. pulmonary trunk. d. pulmonary veins. g
Answer:
answer is A aorta
Explanation:
aorta is the answer
What is sun ? Pls answer me
The Sun is a star. It is a huge, spinning, glowing sphere of hot gas. The Sun is just like the stars that you see in the night sky. ... The Sun is the center of our Solar System and contains most of the mass in the Solar System. All of the planets in our Solar System, including Earth, orbit around the Sun.
Answer: The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as visible light and infrared radiation.
Explanation:
Crossing-over occurs in prophase of mitosis and meiosis.
True
False