Answer:
to provide a barrier to the movement of substances in and out of the cell
Explanation:
Lipid molecules in the plasma membrane form a lipid bilayer which creates a semi-permeable barrier between the inside and the outside of the cell. Water and small molecules can cross the membrane. Other large molecules like ions cannot.
Hope that helps.
The sonographic appearance of choledocholithiasis is best described as. Nonshadowing mobile hyperechoic mass. Mobile hyperechoic focus demonstrating posterior shadowing. Immobile echogenic focus demonstrating a posterior shadow. Mobile hyperechoic focus demonstrating anterior shadowing.
Answer:
Mobile, hyperechoic focus demonstrating posterior shadowing
Explanation:
Cholecystitis can also be regarded as gallbladder inflammation i.e inflammation of a digestive organ which is a small organ beneath the liver. The causes of Cholecystitis is as a result of blocking of tube( cystic duct) that leads the gallbladder all the way to the small intestine, as a result of this Bile can builds up then inflammation will occur. This can be treated through surgery. The features of sonographic oacute cholecystitis are;
✓More than 5mm thickening wall
✓ More than 5cm gallbladder distention
✓sonographic Murphy sign
✓ presence of pericholecystic fluid,
✓ appearance of Gallstones is inform of echogenic foci in the gallbladder.
It should be noted that the sonographic appearance of choledocholithiasis is best described as Mobile, hyperechoic focus demonstrating posterior shadowing.
Which of the following molecules supplies the main source of short term energy used in cellular respiration?
F enzymes
H Lipids
G carbohydrates
J proteins
Answer:
G- carbohydrates
What attraction holds the nitrogenous bases together within the double helix?
a
deoxyribonucleic acid
b
ribose sugar
c
hydrogen bonds
d
phosphate
PLZ HELP ITS MY LAST QUESTION I WILL MARK BRAINLIEST!!!!
Which of the following is true regarding enzymes?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Enzymes can only be used once during a reaction.
(Choice B)
B
Enzymes are reusable.
(Choice C)
C
Enzymes are usually carbohydrates.
(Choice D)
D
Enzymes denature at their optimum temperatures.
Answer:
C. Enzymes are reusable.
Explanation:
a man is twice as old as his son.Five years ago the ratio of their ages was 9:4.Find the sum of their ages
Answer:
75years
Explanation:
Let the Father's age be represented by 2x
Let the Son's age be represented by x
Five years ago;
Man's age will be = 2x - 5
Son's age will be = x - 5
If the ratio of their ages five years ago was 9:4, then;
2x - 5/x-5 = 9/4
4(2x - 5) = 9(x - 5)
8x - 20 = 9x - 45
- Collect like terms
-20 + 45 = 9x - 8x
25 = x
Hence, the son's age = 25 years
If x = 25, the father's age (2x) will be 2 × 25 = 50years
The sum of their ages will be = 25years + 50years = 75years
Cancer cells are rogue cells. List and explain 3 mutations that allow cancer cells to occur:
Which statement accurately describes the relationship between weight and
mass?
A. Weight is an object's mass multiplied by its diameter.
B. Mass is an object's weight multiplied by the amount of
gravitational force acting on that object.
C. Mass is an object's weight multiplied by its diameter.
ОО
D. Weight is an object's mass multiplied by the amount of
gravitational force acting on that object.
Answer:
C
Explanation:
I NEED HELP PLEASE IT'S DUE TOMORROW PLEASEEEE
Answer:
5. heart rate
6. caffeine
7. mice
8. c
9.b
10. (not sure sorry)
Explanation:
5 is heart rate because how high/low it is depends on the amount of caffeine they have. Ex- if they have a lot of caffeine the heart rate would be higher like in humans.
6 is caffeine because the heart rate depends on the amount of caffeine given.
7 is the mice because thats the one thing not changing or dependent on anything since we can see mice without caffeine and mice with caffeine
8. is c because Ari wants to see if the heart beat is dependent on caffeine
9 is b cause theres a group of mice without caffeine
What happens when oxygen is exposed in open flame in a closed space?
Answer:
In an open space, hazardous oxygen concentration usually has explosive risk is the same and results from exposing combustible ...
Answer:
there would be an explosion do to the pure oxygen that would bring life to a flame
The sperm and the ovum are called haploid (as they have only 23 chromosomes) which is half the number of chromosomes seen in all the other human body cells. What is the significance behind the maintenance of this special chromosomal number in the male and female gametes?
Answer:
During the process of meiosis(The process of cell division through which the germ cells such as the reproductive cells are formed), the sex cells produced are haploids (have only 23 chromosomes). This is significant as during the process of fertilization, the nucleus of the sperm (containing 23 chromosomes) and the nucleus of an egg (containing 23 chromosomes too) fuse, hence, retaining the original number of chromosomes in the zygote formed. i.e 46 chromosomes.
An apple farmer notices that two of his trees produce particularly sweet apples. The farmer thinks that these sweeter apples would sell very well andcould make him a lot of money. He uses a Q-tip to pollinate the flowers of the sweet apple tree with pollen from the other sweet apple tree's flowers. He then takes the seeds from the fruit that they produce and grows a new field of trees from them. Almost all of these new trees make very sweet apples like the first two trees did.
Answer:
It is a right method for making a variety.
Explanation:
This is the right method for making sweet apples variety because in apple, cross pollination occurs and for making a new variety self pollination is the best way to prevent impurities in making a new variety. Due to self pollination, the farmer gain the sweet apple variety which help them to make more money by selling these sweet apple because of its demand.
A specific type of cell is being studied by a scientist. She notices the cell contains a nucleus, lysosomes, a cell membrane and cell wall. What is the correct classification of this cell?
A prokaryotic animal cell
B. A prokaryotic plant cell
C. A eukaryotic animal cell
D. A eukaryotic plant cell
also can you say a reason why it's that answer
Answer:
A eukaryotic plant cell
Explanation:
This is the answer because eukaryotic plant cell have nuclei which means more than one nucleus.
A dominant allele is often covered up or masked by the recessive allele. True or false?
Answer:
Explanation:In a heterozygote, the allele which masks the other is referred to as dominant, while the allele that is masked is referred to as recessive.
Answer:
If the alleles are different, the dominant allele will be expressed, while the effect of the other allele, called recessive, is masked. In the case of a recessive genetic disorder, an individual must inherit two copies of the mutated allele in order for the disease to be present
define air mass in your own words.
Answer:
an air mass is a huge body of air in the lower atmosphere that has similar temperature, humidity, and air pressure at given height.
The white blood cells can be compared to the army and soldiers of our country. Explain the reason in about 3-4 lines.
Answer:
Please Mark as Brainliest
Explanation:
The white blood cells provide immunity to our body. They help in fighting against diseases, infections, allergies, and foreign particles. These cells keep our bodies safe and healthy, much like the soldiers of a nation.
Which of the following describes a mutual relationship?
(A) Which of the following describes a mutual relationship?
(B) Ants drink nectar from an acacia tree and protect the tree from harmful insects.
(C) A flock of seagulls fly together to reduce the amount of air resistance they feel.
(D) A grasshopper and a rabbit eat different types of plants to avoid competition.
Answer:
I think the answer is B-------
what is the full form of tree
Explanation:
A tree or large tree is called a long-standing woody plant. In botany, the tree is one of the most durable plants that maintains its leaves by growing a stem or trunk. In some definitions, the use of the tree is such that it is the only woody plant. It is the only plant from which wood is obtained. It is not possible to determine the exact height of the trees, but overall the adult trees reach at least 6 meters [citation needed]. In the structure of the tree there are usually branches that are attached to a large trunk. Compared to other plant and animal species, trees have a long life. Some species of trees are more than 100 meters tall, and some live for thousands of years. Trees are important elements of natural landscape, gardening and landscaping. [1]

Which statement describes the relationship between minerals and rocks?
Minerals and rocks are the same.
Aggregates of minerals form rocks.
Minerals determine the texture of a rock.
Most rocks are made of a single mineral type.
I will give brainliest
Minerals determine the texture of a rock.
Polyculture is well suited to intensive aquaculture because you have two or more non-competing species in the same system
Answer:
True.
Explanation:
It is TRUE that Polyculture is well suited to intensive aquaculture because you have two or more non-competing species in the same system.
This is evident in the fact that Polyculture is a type of agriculture whereby more than one species of plant is cultivated or animals reared simultaneously.
For example, Polyculture in animals may involved paddlefish, tilapia, and bighead carp reared in the same pond. In this case, the paddlefish will feed on crustaceans, while tilapia feed on zooplankton and phytoplankton. Also, bighead carp will feed on zooplankton and big phytoplankton.
A specific type of cell is being studied by a scientist. She notices the cell contains a nucleus, lysosomes, a cell membrane and cell wall. What is the correct classification of this cell?
A prokaryotic animal cell
B. A prokaryotic plant cell
C. A eukaryotic animal cell
D. A eukaryotic plant cell
Answer:
it would be answer c
Explanation:
A eukaryotic plant cell is the correct classification of this cell. So, the correct option is D.
What is a Eukaryotic cell?A eukaryotic cell is defined as the type of cell that has a true nucleus, and other organelles are well defined and enclosed in a membrane that has a large and complex cell that distinguishes them from prokaryotes.
This is the cell with a true and well-defined nucleus, lysosomes, cell membrane, and a cell wall is a characteristic of a plant cell because they are enclosed in a cell wall, unlike animal cells. Eukaryotic cells are found in animals and plants, while bacteria and archaea have prokaryotic cells.
Therefore, a eukaryotic plant cell is the correct classification of this cell. So, the correct option is D.
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Which of the following BEST explains how scientists are able to determine the
structure of Earth's interior?
1) Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface.
2)Drilling deep within the Earth.
3)By cutting into other terrestrial planets.
4) Our modern knowledge of the Earth's interior is just a guess that many scientists have accepted.
Answer:
I think number 1 is the answer.
Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface. The correct option is 1.
What are seismic waves?Seismic waves are caused by sudden movement of materials within the Earth, such as fault slip during an earthquake.
Seismic waves generated by earthquakes or explosions can travel through the Earth's interior, revealing information about the properties of the rocks and other materials they pass through.
In addition to seismic data, scientists use other indirect methods such as magnetic and gravitational field studies, as well as analyses of rocks and minerals found at or near the surface.
Scientists collect indirect evidence by observing seismic waves (Earthquakes) as well as what is visible on the Earth's surface.
Thus, the correct option is 1.
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Which parts of DNA provide the code for proteins?
Answer:
The genetic code is the sequence of nucleotide bases in nucleic acids (DNA and RNA) that code for amino acid chains in proteins. DNA consists of the four nucleotide bases: adenine (A), guanine (G), cytosine (C) and thymine (T). RNA contains the nucleotides adenine, guanine, cytosine and uracil (U).
A gene is a section of a DNA molecule that contains the information to code for one specific protein.
The DNA code contains instructions needed to make the proteins and molecules essential for growth, development and health.What is gene?A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. Many genes do not code for proteins.What is DNA?
DNA is the genetic material, which is involved in carrying the hereditary information, replication process, mutations, and also in the equal distribution of DNA during the cell division.
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Morphological distinction is one of the steps necessary for speciation to occur.
What are the other two?
Answer:
Genetic Separation / Geographic isolation
Explanation:
Morphological distinction (or phenotypic differentiation) can be defined as the diversification of a set of observable physical characteristics in a population, capable of differentiating certain species.
The genetic separation occurs when the division of a group of genes into two or more pools of genes separated over time and depending on several other situational factors.
Geographic isolation occurs due to the physical separation of subpopulations of a given species. The barriers that isolate these subpopulations can be, for example, a river that cuts through a plain, a valley that divides plateaus or a portion of the sea that separates islands and continents.
Should I pull a power move?
Answer:b
Explanation: dont know why
Answer:
like the move/stunt? if it is ill tell you anyways :))
Explanation:
I mean yeah you could try but dont get hurt go for it!!! :)))
When the concentration of molecules on both sides of a membrane is the same, the molecules will
how does a zygote from
Answer:
Formed when a male gamete (sperm) and a female gamete (egg) combine.
Explanation:
A zygote is formed when these two gametes come together. This initial phase is carried out in the Zygotic stage.
Hope this is correct. Have a wonderful day.
Which statement best describes the relationship between the products of photosynthesis and the reactants in cellular respiration?
Answer:
The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy.
Explanation:
A mother is heterozygous for Type B blood and a father has type O blood, what is the probability of the offspring having Type B blood
A. 25%
B. 0%
C. 50%
D. 100%
E. 75%
Answer:
D
Explanation:
In Units 4A and 4B, we have learned about photosynthesis and cellular respiration. Which of the following statements is true?
a. The reactants of photosynthesis are the reactants of cellular respiration.
b. Photosynthesis produces light energy while cellular respiration produces chemical energy.
c. The products of photosynthesis are the reactants of cellular respiration.
d. Photosynthesis and cellular respiration use light energy to convert to chemical energy.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
What do you call a large chain of carbons and hydrogens bonded
together? *
polysaccharide
carbohydrogen
hydrocarbon
polypeptide
Answer:
a hydrocarbon chain
Explanation:
Answer: hydrocarbon
Explanation: