Answer:
D
Explanation:
The correct answer would be Nucleic Acid.
A typical nucleic acid has 3 components which include:
A purine or pyrimidine nitrogenous baseA phosphate groupA 5-carbon sugarThe purine base includes adenine and guanine while the pyrimidine base includes thymine/uracil and cytosine. The 5-carbon sugar could be ribose or deoxyribose depending on if the nucleic acid is ribonucleic or deoxyribonucleic acid.
The only macromolecule that contains the 3 components of the options A to D is the nucleic acid. Hence, the correct option is D.
What are different kinds of farming?
Answer:
There are three two types of farming
Explanation:
1: For Business
2: For live
Explanation:
Arable farming
pastoral farming
mixed farming
subsistence farming
commercial farming
Extensive and intensive farming
Nomadic farming
sedentary farming
poultry farming
fish farming
NaCl dissociates into 2 particles in water Na and Cl. If the solution in question 4 contained 0. IM NaCl instead of 0.IM sucrose, what is the of the solution, and in which direction would the net flow of water be?
Answer:
-4.87 (see image for further explanation)
Explanation:
Water potential of solution will be − 4.87 The direction of water potential will be out of root into salt solution.
What is water potential?ψ = iCRT
Where, i = −2,
T = 273+ 20
R= 0.831
ψ = ( −2 ) ( 1) (0.831) ( 273+ 20)
= − 4.87bars
Water potential of a substance is equal to pressure
Ψ = ΨS + ΨP
Ψ = 0 + ( 4.87)
= − 4.87bars
Therefore, Water potential of solution will be − 4.87 The direction of water potential will be out of root into salt solution.
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Believe it or not, ____________ within an ecosystem is NOT transferred back and forth between all levels. Energy begins with the ____________ and flows in ____ direction to ____________, to ____________, and, finally, to ____________.
Answer:
Energy
Sun
One
producers
Consumers
Decomposers
Explanation:
Believe it or not, __Energy__ within an ecosystem is NOT transferred back and forth between all levels. Energy begins with the __Sun__ and flows in __One__ direction to _producers_, to _Consumers_, and, finally, to _Decomposers_.
what does LOL mean ?
Answer:Laugh Out Loud
Explanation:
Answer:
Laugh Out Loud
Explanation:
Usually used in texts
Describe the path that energy takes, from solar energy reaching earths surface to energy used to power cell processes in animals
The path that energy takes, from solar energy reaching the earth's surface to energy used to power cell processes in animals - Animals eat the grass that captures the energy from the sun which gives the animal nutrients
The Sun is the primary source of energy for organisms and the ecosystems of which they are part.
Producers, such as plants and algae, get their energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter.This process begins the flow of energy through almost all food webs.The energy present in these photosynthetic organisms store then transferred to various animals when they feed on these plants and algae and get their food and energy.Thus, the correct answer would be - Animals eat the grass that captures the energy from the sun which gives the animal nutrients
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A rock rests completely still at the top edge of a tall cliff. The rock has - () 17 points
no kinetic energy of potential energy
a lot of kinetic energy but no potential energy
a lot of potential energy but no kinetic energy
both kinetic energy and potential energy
Your three blood cells types have different sizes, shapes, and functions. yet they all started out alike. within each cell of your body there are______. which give the instructions for cell process. these instructions include the differentiation of your blood cells.
Answer:
white blood cells (monocytes, lymphocytes, neutrophils, eosinophils, basophils, and macrophages), red blood cells (erythrocytes), and platelets
Which of the following is defined as a process of weathering able to move rock and soil particles from one area and deposit them in another?
A. expansion
B. decomposition
C. erosion
D. hydrolysis
Answer. erosion..eriosion is the movement of rock and solid particles from one area to another.
Explanation:
Fluid in the inner ear creates a sense of
Answer:
It is also essential to our sense of balance: the organ of balance (the vestibular system) is found inside the inner ear. It is made up of three semicircular canals and two otolith organs, known as the utricle and the saccule. The semicircular canals and the otolith organs are filled with fluid.
I hope this helps you.
Please help me!!please
Answer:
C.
Explanation:
:DDD
what is the names of these 2 muscles? it's an arm btw
what creates the bubble like film on the surface of water
Answer:
Surface tension
Explanation:
Suppose insects that feed on the plants were placed inside the growth chamber as well. Predict how this might affect the levels of CO2 in the growth chamber. How does this model, on a smaller scale, represent the cycling of carbon through Earth's systems?
Answer:
This question is incomplete
Explanation:
This question is incomplete because of the absence of the diagram illustrating the growth chamber. However, since insects also produce/exhale carbon dioxide (CO₂) as a waste product, the level of CO₂ in the growth chamber will increase since insects will serve as an additional source for the production of CO₂.
This model shows how carbon is been cycled though the earth's systems. The CO₂ released/exhaled by animals is been inhaled by plants and used for the production of food substance like glucose (through the process of photosynthesis). Animals eat these plants and then release carbon from these food sources as CO₂ which is taken up from the environment again by plants.
There are two different types of cell transportation. Which of the following requires energy?
a. Facilitated Diffusion
b. Active Transport
c. Osmosis
d. Simple Diffusion
please help :))
Answer:
The type of cellular transport that requires energy is active transport (option b).
Explanation:
Active transport —unlike passive transport— involves the passage of molecules or substances through the membrane against a concentration gradient, a process that requires the use of energy.
In the case of active transport the energy for the process comes from the ATP molecule and the mechanism for this to be possible is by means of an ATPase incorporated into the transporter.
The transport of glucose and the sodium-potassium and calcium pumps are examples of this type of transport.
The other options are not correct because simple diffusion, facilitated diffusion and osmosis are passive transport mechanisms that do not require the use of energy.
the following in NOT a component of a prokaryotic cell
a. nucleus
b. ribosomes
c. cell wall
d. flagella
What is DNA replication? Highlight your answer.
A. Conservative
B. Non-conservative
C. Semi-conservative
D. None of the above
Answer:
C
Explanation:
29
30
5.5. The smallest cell in the world is:
Answer:
Mycoplasma
Explanation:
It is about 10 micrometers in size.
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what do you think causes different phenotypes in organisms how does the phenotype depend on its genes (genotype)
Answer:
They difference in phenotypes is dependent on the genes. The more dominant gene will overpower a recessive gene, or if there are two recessive genes together, that will be the phenotype. When things are cross breaded they introduce different genotypes that allow for different looking phenotypes.
Example: Dominant blue flower (Bb) mixed with recessive yellow flower (bb)
B b
b Bb bb
b Bb bb
There is a 50/50 chance the offspring will be either blue or yellow
The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that. When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.
What is phenotype?A "phenotype" is simply an observable trait. "Pheno" simply means "observe," and it derives from the same root as "phenomenon."
The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that.
When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.
Thus, in this way, phenotype is dependent on genotype of the organism.
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why must controlled fires be set in some ecosystems? what are some advantages and disadvantages?
Answer:well dry areas could catch fire and become out of hand or some plants may be harmed due to smoke
advantages:trimming area and making room
disadnstages:possible forest fire,harms plants,ruins animals homes
Explanation:
Which of the following is not characteristic of a behavior?
a.
It can be observed.
b.
It can be recorded.
c.
It can be influenced by the environment.
d.
It can include a person’s thoughts.
Answer:
D.
Explanation:
Characteristcs do not include a persons thoughts.
Answer:
Its 100% DExplanation:
got it on edg
Gymnosperms are classified as which of the following?
O Vascular
Non-vascular
Monocot
Dicot
Answer:
D. Dicot
Explanation:
...... .............. ..
what are the 2 limits of natural selection?
Answer:
In the explanation box
Explanation:
- limited contribution to the origin of species;
- limited prevention of the extinction of species; and.
- limited prediction of the results of selection.
Which statement best describes a keystone species?
O A. It is the largest population in the community.
B. It occupies the highest trophic level in the
community
C. Its absence would affect many organisms in the
community.
O D. It is the largest animal in the community.
Alexis is using models of the cell membrane to compare the types of cellular transport. One
model shows a molecule entering through a protein pump. Which ope of cell transport is
being modeled?
A
diffusion because protein pumps are needed to move substances from a higher
concentration to a lower concentration
8
endocytosis, because protein pumps transport substances that are too large to
pass through the cell membrane
active transport, because protein pumps are needed to move substances against a
concentration difference
D
osmosis, because protein pumps allow water to cross the cell membrane
Answer:
C. active transport, because protein pumps are needed to move substances against a concentration difference
Explanation:
There are two major types of transport in living cells namely: passive transport and active transport. The passive transport moves molecules down a concentration gradient and hence, do not need energy (ATP) to occur. However, on the other hand, ACTIVE TRANSPORT moves substances against their concentration gradient, thus, require energy input.
Active transport makes use of PROTEIN PUMPS to achieve this process. Hence, in this case where Alexis is using models of the cell membrane to compare the types of cellular transport. The model that shows a molecule entering through a protein pump is modelling ACTIVE TRANSPORT.
Controls the entry of chyme into the duodenum - Controls the entry of chyme into the colon - Substance that helps make or break a chemical bond - A component of gastric juice - Organ that releases bile into the small intestine - Organ that synthesizes bile - Fingerlike projection of small intestinal lining - Absorption mechanism that requires energy - Absorption mechanism that does not require energy - Carries fat-soluble vitamins
A. Pylorus
B. Active transport
C. Diffusion
D. Villus
E. Gallbladder
F. Lymphatic system
G. Hydrochloric acid
H. Ileocecal valve
I. Enzyme
J. Liver
Answer:
- Controls the entry of chyme into the duodenum: A. Pylorus
- Controls the entry of chyme into the colon: H. Ileocecal valve
- Substance that helps make or break a chemical bond: I. Enzyme
- A component of gastric juice: G. Hydrochloric acid
- Organ that releases bile into the small intestine: E. Gallbladder
- Organ that synthesizes bile: J. Liver
- Fingerlike projection of small intestinal lining: D. Villus
- Absorption mechanism that requires energy: B. Active transport
- Absorption mechanism that does not require energy: C. Diffusion
- Carries fat-soluble vitamins: F. Lymphatic system
Explanation:
The pylorus is a part of the digestive system that connects the stomach to the duodenum. The ileocecal valve is a muscle localized between the ileum of the small intestine and the colon, whose main function is to limit the reflux of colonic contents. Gastric juice is a liquid consisting of hydrochloric acid, lipase, and pepsin, whose main function is to inactivate microorganisms. The gallbladder is a small organ that in combination with the small intestine are reservoirs for bile acid and regulate the biliary secretion of this acid. The bile acid is a fluid secreted by the liver that helps to digest lipids in the small intestine. Intestinal villi (villus in singular) are finger-like projections that increase the surface area for the absorption of nutrients in the small intestine. Active transport is the movement of molecules across cell membranes by using energy from ATP hydrolysis or by using an electrochemical gradient. Diffusion is the movement of molecules across cell membranes from a side of the membrane with higher concentration to the other side with lower concentration. An enzyme is a molecule (generally a protein) that is capable of accelerating the rate of a chemical reaction. Fat-soluble vitamins are absorbed in the small intestine and then they are transported through the lymphatic system to be released into the bloodstream.
In 20 words or fewer, what science questions would you ask about the video?
Answer:
What is the video about? Who came up within the Concept
Explanation:
Cellular respiration produces
A. ATP.
B. Oxygen
C. cellulose
D. glucose
Answer:
ATP
Explanation:
Carbon dioxide is transported from your mitochondria out of your cell, to your red blood cells, and back to your lungs to be exhaled. ATP is generated in the process.
Cellular respiration produces ATP. Thus, option A is correct.
what is cellular respiration?The process in which conversion sugars into energy (ATP) occur by cells called as cellular respiration. It can be used by a number of cellular components as a source of energy.
There are two types of respiration occur such as aerobic and anaerobic respiration.
Aerobic respiration occur in presence of oxygen which act as a powerful electron acceptor, mostly seen in eukaryotes.
In case of prokaryotic organisms such as bacteria and archaebacteria, other types of respiration occur.
Carbon dioxide is also a product of cellular respiration which is released as a waste product.
There are three major types of cellular respiration occur such as aerobic, lactic acid fermentation, alcoholic fermentation.
In aerobic respiration 36 ATP, where as in lactic acid fermentation 2 ATP and alcoholic fermentation 2 ATP are produced.
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You have isolated and purified a new species of cells from the rain forest and you want to place this new species in the appropriate branch of the tree of life. You sequence the ribosomal RNA genes from these cells and discover that for one particular region of the ribosomal gene (the rRNA) the RNA sequence is AAUGAAGG. You have sequences from the same region of the ribosomal genes (the rRNA) from each of these species: bacteria, eukaryote and archaea, which are listed below.
bacteria AUAGAUGG
eukaryote AAAGAAGG
archaea AAUGGAGU
Based on these sequence results, to which branch of the tree of life should you assign this new species?
a. eukaryote
b. archaea
c. bacterial
d. bacteria and archaea
e. There is not enough information.
Answer:
The correct answer is: option A. eukaryote.
Explanation:
The sequence of the newly found rRNA is AAUGAAGG is similar to the sequence is given for the eukaryote which is AAAGAAGG, there is only one exception at 3thirs position of the sequence which is instead of uracil there is adenosine. However, this could be a result of the transversion mutation where A converted into U of the period of evolution.
On the other hand, the rRNA of bacteria and archaea have a very high difference in their sequence with a change in one than one base.