Answer:
False
Explanation:
Plant cells have a cell membrane. They are eukaryotes because they have membrane bound organelles.
Hope this helped!
Using the above diagram, what does the body make in response to a vaccine?
Answer:
antibodies
Explanation:
Vaccines are like a training course for the immune system. They prepare the body to fight disease without exposing it to disease symptoms. When foreign invaders such as bacteria or viruses enter the body, immune cells called lymphocytes respond by producing antibodies, which are protein molecules
Explain in a few sentences how the carbon, nitrogen, and phosphorus overlap. How do these cycles cross paths through earths spheres?
Answer:
Explanation:Energy flow and nutrient circulation are the major functions of the ecosystem.
Energy is lost as heat forever in terms of the usefulness of the system. On the other hand, nutrients of food matter never get used up. They can be recycled again and again indefinitely.
Carbon, hydrogen, oxygen, nitrogen and phosphorus as elements and compounds makeup 97% of the mass of our bodies and are more than 95% of the mass of all living organisms.
In addition to these, about 15 to 25 other elements are needed in some form for the survival and good health of plants and animals.
These elements or mineral nutrients are always in circulation moving from non-living to living and then back to the non-living components of the ecosystem in a more or less circular fashion.
This circular fashion is known as biogeochemical cycling (bio for living; geo for atmosphere).
Among the most important nutrient cycles are the carbon nutrient cycle and the nitrogen nutrient cycle.
There are many other nutrient cycles that are important in ecology, including a large number of trace mineral nutrient cycles.
A student builds a model of a DNA strand.
BO
Which of these models of a DNA strand shows bases that are complementary to the ones on
the student's DNA model?
Biology
Answer:
There is no attachment to this question, however, the base sequence on the model built by the student is: CAGCCATC
The options of the bases on the complementary model are:
A) CTACCGAC
B) GUCGGUAG
C) GTCGGAAG
D) GTCGGTAG
The answer is D
Explanation:
A DNA molecule is a polymer biomolecule made up of nucleotide bases. It is a double stranded molecule, with each strand containing nucleotides held together by hydrogen bonds. The pairing of nucleotides in one strand of DNA to another follows the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine binds to Thymine (A-T) while Guanine binds to Cytosine (G-C).
According to this question, a student builds a model containing the base sequence: CAGCCATC, the model that contains bases that are complementary to the ones built by the student is: GTCGGTAG
Answer:
D
Explanation:
Under ideal laboratory conditions the rate of growth of bacteria is proportional to the size of the population at time tt. Suppose that 21002100 bacteria are present initially and that 42004200 are present 1 hour later. How many bacteria are there at the end of 55 hours?
Answer:
The amount of bacteria that are there at the end of 55 hours is 2310231000
Explanation:
From the description in the question, the bacteria's population size doubles per hour;
Within 1 hour = 21002100 × 2 = 42004200
Thus
After 1 hr ⇒ 42004200
55 hrs ⇒ ?
? = 55 × 42004200 = 2310231000
The amount of bacteria that are there at the end of 55 hours is 2310231000
Where does the food that animals and people eat come from?
The food that animals and people eat comes from a variety of sources, including plants, animals, and other organisms, as plants are the primary source of food for most animals, including humans.
What is food for animals?They use photosynthesis to produce carbohydrates, proteins, and fats, which form the basis of their tissues. These nutrients are stored in different parts of the plant, such as the leaves, fruits, seeds, and roots, and can be harvested for human consumption. Animals also provide food for humans and other animals. Meat, dairy products, and eggs are some examples of animal-derived foods. Animals obtain their nutrients by consuming plants or other animals, and the nutrients get transferred up the food chain to other animals that feed on them.
Hence, The food that animals and people eat comes from a variety of sources, including plants, animals, and other organisms.
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We know gender differences are based in biology because all cultures practice the same gender norms and ideologies.
True
False
Answer:
false
Explanation:
not all cultures practice the same gender norms and ideologies
What are some of the functions of vascular tissue in seedless plants? (Choose all that apply)
provides structural support that allows some lycophytes to grow taller
transports water and minerals
transports food
produces food through photosynthesis
Answer:
Explanation:
Xylem transports and stores water and water-soluble nutrients in vascular plants.
Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants.
Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.
Vascular tissues can provide support to the plants and also help in the transport of water, mineral and food. So, the correct options are A, B and C.
What is vascular tissue?Vascular tissues mainly perform the function of supplying all the parts of the plant with water, minerals and food. there are two kinds of vascular tissues - xylem and phloem.
Xylem is the water-conducting vascular tissue. It conducts water from the roots of the plant to various other parts. In the xylem, the movement of water is unidirectional, which means it only conducts water from bottom to top and sometimes sideways
Phloem is the food-conducting vascular tissue of plants. It conducts water from leaves to other parts of the plant. In phloem, the movement of water is bidirectional, which means it conducts water from both directions. Xylem and phloem lie next to each other in a bundle called a vascular bundle.
Lycophytes are a group of seedless vascular plants which have a unique arrangement of their vascular tissues. In these plants, the lycophytes support the growth of plants.
Therefore, the correct options are A, B and C.
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Describe three proteins that are produced by genes.
Explanation:
coding regions, called exons, which specify a sequence of amino acids.
non-coding regions, called introns, which do not specify amino acids.
regulatory sequences, which play a role in determining when and where the protein is made (and how much is made)
Answer:
1. coding regions, called exons, which specify a sequence of amino acids.
2. non-coding regions, called introns, which do not specify amino acids.
3. regulatory sequences, which play a role in determining when and where the protein is made (and how much is made)
Explanation:
what is the lagging strand synthesized by?
Answer: Unlike leading strands, lagging strands are synthesized as discrete short DNA fragments, termed 'Okazaki fragments' which are later joined to form continuous duplex DNA. Synthesis of an Okazaki fragment begins with a primer RNA-DNA made by polymerase (Pol) α-primase.
Explanation:
Discuss how a pathogen causes an infection. Include definitions for primary pathogen, opportunistic pathogen, infection, disease (caused by a living organism), and various stages of pathogenesis. You can choose a specific organism to describe
Answer:
Infections are generated by pathogens, pathogens that generate a rare invasion triggering an extremely risky condition for the host, opportunistic infections are usually caused by highly pathogenic microorganisms with high resistance mechanisms and are really serious signs and symptoms.
Primary pathogen is one that colonizes in a primary way by forming a biofilm or a microbiological ecosystem.
The great difference between infection and infectious disease is that the infection is the presence of microorganisms that cooperate and live with the host without generating pathology, whereas infectious disease is when these microorganisms generate a pathology or condition in the host.
Explanation:
The pathogenesis are different stages that make up the ability of a microorganism to get sick, an example is prevotella parvula or treponema denticola that during pathogenesis they quickly invade the tissues due to their movements, in addition to the tissues such as the mucosa they generate an immune distraction that release toxins in different areas to the invasion.
These are pathogenicity mechanisms, that is, how the microorganism does to be able to invade the tissues in the most oppressive way.
Which of the following is most likely to be an energy source for the cells of a living thing?
А. DNA
B. enzymes
С. disaccharide
D. amino acids
The most likely to be an energy source for the cells of a living thing is a disaccharide (Option C).
A disaccharide is a carbohydrate composed of two monosaccharide units.
Cellular respiration refers to a series of metabolic reactions by which cells produce ATP, the energy coin of the cell.
Monosaccharides (e.g., glucose) represent the main source of energy used by cells during cellular respiration.
In conclusion, the most likely to be an energy source for the cells of a living thing is a disaccharide (Option C).
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what makes stem cells different from cells in the body
Answer:
Stem cells are the body's raw materials
Explanation:
Stem cells are the body's raw materials — cells from which all other cells with specialized functions are generated. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells.
Stem cells are different from the other body cells as these are unspecialized cells which can undergo division and renew on their own. The stem cells can undergo specialization by the process of cellular differentiation.
What are Stem cells?Stem cells can be defined as the body's raw materials. These are the cells from which all the other cells with specialized functions are generated.
Embryonic stem cells are the pluripotent stem cells derived from the inner cell mass of a blastocyst. Blastocyst is an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage in 4 to 5 days post fertilization, at which time they consist of 50 to 150 cells.
Stem cells are different from the other cells in the body in three ways which are the stem cells can divide and renew themselves over a long time. Stem cells are unspecialized cells, so they cannot do specific functions in the body unless they undergo cellular differentiation. Stem cells have the potential to become specialized cells, such as muscle cells, blood cells, and brain cells by undergoing cellular differentiation.
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Which of these structures do plants and algae have in common?
xylem
phloem
chloroplasts
stems
Answer:
c
Explanation:
so did i
Answer:
chloroplasts
Explanation:
Phagocytosis is an example of ?
The graph shows the predicted change in land usage when the population growth rate is positive and average. What effect would average population growth have on land usage?
The effect that the average population growth would have on land usage, considering the given graph is that: Option D.
What is Urban Land Use?Urban land use can be described as the level of activities reflected by a location which involves the following:
RetailingManufacturingResidenceInstitutional and public buildingsTransportation, among others.Urban land use increases, normally, as population increases. From the graph shown, the purple line shows urban land use increased above 30%.
Therefore, the effect that the average population growth would have on land usage, considering the given graph is that: Option D.
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Answer:
Urban use of land rises to more than 30 percent of available land
Explanation:
Which process creates two daughter cells with identical genetic material?
A. interphase
B. intercellular communication
C. mitosis
D. meiosis
Answer:
c
Explanation:
who cares
explain movement of water in the root
Answer:
Water initially moves into the root hair cells by osmosis, because the mineral content of the cells is higher than that of the surrounding environment. Thus, a root pressure is established and extends into the microscopic tubes of the xylem.
Explanation:
Callie did a lab during which she investigated the difference in cellular respiration rates between two different types of corn: germinating and non-germinating. A germinating seed is one from which a plant has started to grow. A non-germinating seed is usually dry and a new plant has not yet emerged. The data that she gathered are displayed in the graph. After Callie obtained her original results, she wanted to dig deeper. She determined that the germinating corn seed had utilized 100 molecules of glucose in the first few seconds that she performed the experiment. If these data are accurate, how many carbon dioxide molecules would Callie expect to have been released as a waste during this same amount of time? Explain how you arrived at your answer. The formula for cellular respiration is shown below. C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
This a written question and please keep it at 7th grade level
Answer:
I might be wrong but im guessing 600
Explanation:
Since there is one molecule of glucose used per 6 molecules of carbon dioxide released, if you have 100 molecules of glucose, then you multiply the carbon dioxide by 100 which is 600. Thats what I would say but I might be wrong.
HELP! time crunch!
"Describe the flow of blood through the human heart starting in the left atrium and ending in the left atrium."
in two or three sentences please...Thanks in advance!
Willing to give 40 points!
Answer:
Explanation:
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body. pl give brainly
please help me with this question:)
Answer:
all cells so the last one
What do inner planets and outer planets have in common, and what are some differences?
Answer:
Inner Planets include Mercury, Venus, Earth and Mars,- these are hotter planets.
Outer planets are colder because they are farther from the sun, a lot farther.
Explanation:
They are all planets.
Is thigmotropism is caused by water?
Answer: No. Hydrotropism is caused by water
Explanation:
Vhat is the correct formula for trisilicon hexafluoride.
Answer:
xenon hexafluoride.
Explanation:
Answer:
Si₃F₆
Explanation:
Clue 1:
a. DNA is made of nucleotides.
b. Protein is made of amino acids.
c. DNA is located exclusively in the nucleus.
d. Protein is synthesized exclusively in the cytoplasm.
1) What two problems does the transfer of information from DNA to protein need to overcome?
a.
b.
Answer:
The two problems that the transfer of information from DNA to protein must overcome are:
How to bring the information from the nuclear DNA to the place of protein synthesis? How to convert this DNA information into amino acids and then into proteins?Explanation:
The genetic information is found in the DNA and depends on a specific sequence of nitrogenous bases. This information is transcribed into the messenger RNA, whose base sequence is organized into triplets and codons, each of which encodes an amino acid, as well as establishing the pattern for starting and stopping the synthesis of a protein.
How to bring the information from the nuclear DNA to the place of protein synthesis?The DNA must be transcribed into messenger RNA (mRNA), a process that occurs in the nucleus of the cell. mRNA leaves the nucleus and travels to the cytoplasm, where amino acid synthesis will take place.
How to convert this DNA information into amino acids and then into proteins?Once in the cytoplasm mRNA binds to ribosomes, structures in charge of translating the sequence of nitrogenous bases RNA to synthesize amino acids. The set of ribosomes and rough endoplasmic reticulum are in charge of the assembly of amino acids to produce peptides and proteins.
which of the following describes the interrelated nature between photosynthesis and cellular respirationremember
Answer: cellular respiration produces oxygen, while photosynthesis uses oxygen. Photosynthesis releases energy, while cellular respiration stores energy. Photosynthesis used carbon dioxide, while cellular respiration produces carbon dioxide.
Cellular respiration stores ATP, while photosynthesis releases ATP.
What is detritivores
Answer:
An animal which feeds on dead organic material, especially plant detritus.
Explanation:
Detritivores, are heterotrophs that obtain nutrients by consuming detritus. There are many kinds of invertebrates, vertebrates and plants that carry out coprophagy. By doing so, all these detritivores contribute to decomposition and the nutrient cycles.
When molecules of glucose and fructose combine to form sucrose, they do so by: Question 8 options: radiation hydrolysis electron clouds condensation reaction
Answer:
I think it's hydrolysis?
Explanation:
A byproduct of the formation of sucrose is water, when the hydroxide ions of glucose and fructose combine, they are bonded together by one of the oxygen molecules.
Hope this helps!
You can also test this by combining glucose (sugar) and fructose (a type of syrup) in a pot which makes caramel and hard candy.
What compound do plants get from their roots for photosynthesis?
options:✨✨✨
Carbon Dioxide
Oxygen
Glucose
Water
A depiction of the MAPK/ERK signaling pathway that leads to cell growth is shown in the image.
What would be observed if a carcinogenic compound in coal tar activated step 3 of the pathway, even in the absence of the signaling molecule?
A) The transduction molecules in step 5 would always be active.
B) Step 2, the step linking the receptor to transduction, would always be active.
C) Step 4, a transduction step, would be prevented from activating the target protein.
D) The transcription factor in step 6 would be prevented from transcribing the target genes.
Answer:
a
Explanation:
I am pretty sure its a
Which process plays an important role in the cycling of both carbon and nitrogen? photosynthesis transpiration decomposition respiration
Answer: C
Explanation:
Decomposition plays a major process to cycle the carbon and nitrogen due to dead matter, hence option c is correct.
What is the cycling of carbon and nitrogen?The biogeochemical cycles of carbon and nitrogen are all in plants and animals when dies bacteria decompose it and release nitrogen and carbon into the soil.
They depict how the elements travel through the Earth's life and nonliving constituents. The elements of life—carbon, and nitrogen pass through living things and nonliving things alike without ever being consumed.
Nitrification is the process by which bacteria convert ammonium into nitrates. Then, the plants may take up nitrates. It is through assimilation that plants obtain nitrogen, roots take up nitrates from the soil.
Therefore decomposition is the main process for cycling of both carbon and nitrogen, hence option c is correct.
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