food vacuole or granule:- used to contain food for digestion .
contractile vacuole :- used to remove excess water.
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Answer:
vacuole store water nutrients and other materials and in plants support the cell structure.
Explanation:
A scientist studying the effects of radiation on DNA performs an experiment in which she exposes a sequence of nitrogen bases found in DNA to radiation. The DNA before and after the radiation is shown below.
Use the evidence to determine whether a mutation has occurred, and if so, interpret that mutation in the answer sheet provided
Before Exposure: ATCGTCA; After Exposure: ATTCGTCA
A. No mutation has occurred to the DNA sequence.
B. A nitrogen base has been deleted from the DNA molecule.
C. A nitrogen base has replaced another nitrogen base in the DNA molecule.
D. A nitrogen base has been added to the DNA molecule.
Answer:
D. A nitrogen base has been added to the DNA molecule.
Explanation:
You can see that the sequence for the nitrogen bases are in the exact same order after the exposure, this rules out A. You can count how many bases there are, 7 before and 8 after so it cannot be B. Lastly, given that they are in the same order as were before and that a base has been added, you can see that no bases were replaced (so not C) and that D is your answer.
Identify from the following list which examples are controlled experiments. You make two pitchers of lemonade and
-only change the amount of lemonade mix you add.
-only change the amount of water you add.
-change both the amount of water and the amount of lemonade.
The answer is A&B
HELP!!
A mother with the genotype AA displays the dominant version of the trait. Her husband displays the recessive version of the trait. Their child displays the dominant version of the trait. How is this possible?
A. The mother gave a recessive allele to their child.
B. The father gave two recessive alleles to their child.
C. The mother gave the dominant allele to their child.
D. The father gave the dominant allele to their child
Answer: C. The mother gave the dominant allele to their child.
True or false
Prokaryotic cells can’t replicate DNA, because they do NOT possess nuclei.
Answer:
False
Explanation:
Prokaryotes do have their genomic DNA concentrated and localized to a small area within the cell (nucleoid region). So it's not entirely accurate to say that prokaryotes don't have a nucleus.
Answer:
true
Explanation:
prokaryotics are cells without nucleus
Which part of the female reproductive system is highlighted below?
A. Fallopian tube
B. Ovary
C. Uterus
D. Cervix
Answer:
C. Uterus
Explanation:
Uterus is the female reproductive system.
What is Female reproductive system?The female reproductive system serves a number of purposes. It aids in sexual reproduction in addition to enabling sexual activity.
You make eggs using your ovaries. During ovulation, these eggs are subsequently moved to your fallopian tube where sperm fertilization may take place. The fertilized egg is then transferred to your uterus, where the lining of the uterus has expanded due to the typical hormones produced during your menstrual cycle, also known as your reproductive cycle.
The fertilized egg can implant into the thicker uterine lining once it's within your uterus and continue to grow there. Your menstrual period causes the uterine lining to shed if implantation doesn't occur.
Therefore, Uterus is the female reproductive system.
To learn more about Uterus, refer to the link:
https://brainly.com/question/9778292
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Can root photosynthesize?
Please answer fast
Answer:
It is absolutely yes Yes
Any change in the Relative Frequency of alleles in a population is:
Controlled by more than 2 genes
Controlled by a single gene
The gene pool
Evolution
If the petals of a flower are reduced or absent, how is the plant pollinated?
Answer:
the anther of a plant produces pollen which enters the stigma of the same plant( self pollination) or enters the stigma of another plant ( cross pollination
Explanation:
*(the petals baisically have nothing to do with pollination)
DNA undergoes ____to produce_____.RNA undergoes____to produce_____
I am not really sure but you can get the answer from it :
They discovered a fundamental mechanism of how proteins protect chromosomes while DNA is being copied (a process called DNA replication), which relies on a protein called RPA. Cells have a limited amount of this protein, which they use as 'band aids' to protect the DNA temporarily during replication.
Read about invasive species. Then answer the questions provided. Wild Parsnip Describe the invasion of wild parsnip, including the harm it causes.
Answer: An invasive species is the one which compete for resources with the native species.
Explanation:
Wild Parsnip is an invasive species of plant in Europe and Asia. It grows on the roadside and the seeds of the plant disperse very easily by wind and water agents. It spreads easily and compete with native species for resources like soil nutrients, water, and others. It produces a chemical that causes rash in the human skin and the human skin becomes sensitive to sunlight resulting in development of blisters and rashes on the skin.
Answer:
came from Europe and Asia
invaded the entire state of Wisconsin
can burn your skin
reproduces rapidly
can be removed at root or with a powered brush cutter for large populations
Explanation:
The most likely reason(s) a metastatic tumor cell might lose its connection to the basal lamina would be: a change in the integrin proteins from the cell's surface. a change in the cadherin proteins on the cell surface. a change in connexins disrupting gap junctions. All of these choices are correct.
Answer:
A change in the integrin proteins from the cell's surface.
Explanation:
Integrin proteins' principal function is to attach the cell to the basal lamina. Also, they transmit signals from the extracellular matrix to the interior of the cell. A change in the integrin could result in loss of connection between the mutated cell and the basal lamina.
Cadherin proteins connect one cell to another. A change in these proteins will not result in the loss of connection between the metastatic tumor cell and its extracellular matrix. It most likely will affect the communication and adhesion of cells.
A change in connexins will disrupt the communication between cells but not the connection to the lamina basal. Connexins are transmembrane proteins that connect one cell to another with gap junctions that allow the passage of different components from cell to cell.
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What is the name of this table?
Answer: Periodic table
Explanation:
Answer: Periodic table of the elements
The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends.
What is the difference between a) prokaryote and eukaryote; b) autotroph and heterotroph; c) unicellular and multicellular?
Answer:
Explanation:
a) eukaryotes have membrane bound organelles like nuclei while prokaryotes don't
b) autotrophs = producers that can make their own food while heterotrophs consume producers or other consumers
c) Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function
What is the final result of genetic drift in populations of
Answer: Genetic drift may result in the loss of some alleles (including beneficial ones) and the fixation, or rise to 100% frequency, of other alleles.Once it begins, genetic drift will continue until the involved allele is either lost by a population or is the only allele present at a particular gene locus within a population. ... Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool.
Explanation:
Answer:
decrease the genetic diversity of a population.
Explanation:
Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time.
Genetic drift can cause a new population to be genetically distinct from its original population, which has led to the hypothesis that genetic drift plays a role in the evolution of new species.
Compared to freshwater fishes, marine fishes: drink seawater and produce a large volume of urine. do not drink seawater in an effort to conserve as much water as possible. produce a large volume of dilute urine in an effort to rid their bodies of excess water. tend to gain water by osmosis since their internal salt concentration is higher than that of seawater. tend to lose water by osmosis since their internal salt concentration is lower than that of seawater.
Answer:
The correct answer is - tend to lose water by osmosis since their internal salt concentration is lower than that of seawater.
Explanation:
In freshwater fishes, the body of fishes has a higher salt concentration inside their body than the surrounding water, water enters through the osmosis process. Without any active regulation of this process, fishes would swell and get bigger and bigger. They have specialized cells called chloride cells in gills to take ions from water as they do not have kidneys.
In contrast, the marine fishes have a lower salt concentration in their body than surrounding water of sea or ocean and they lose water continuously and to compensate for this they need to drink water regularly.
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Complete the complementary strand of DNA, using the same symbols for phosphates (circles), sugars (pentagons), and bases. Mark the 5' and 3' direction of the strands,
Drag the appropriate labels to their respective targets. Terms can be used once, more than once, or not at all
About the question:
You will find the completed strand in the attached files
Answer and Explanation:
First, we need to recognize each strand, the original one and the complementary one. We can recognize the original strand because bases are already given. So,
The original strand is the one at the left,The complementary strand is the one at the right.Now we need to recognize and pair the bases. Names are written with their letters.
Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.
In the DNA molecule, Adenine (Purine) forms pairs with Timine (Pyrimidine), while Guanine (Purin) pairs with Cytosine. Two hydrogen bonds join the A-T pair, and three hydrogen bonds join the G-C.
Once we drag the base labels to their targets, we need to recognize each of the strain extremes.
One of the extremes has a phosphate group, which is named 5´. The other extreme has a hydroxyl OH named 3´. Both of them are readen in the 5´to 3´ direction. The polymerase enzyme reads the original strand in 5´ to 3´ mode, and the molecule lecture goes from 3´to 5´.
So, by looking at the labels, we will recognize the phosphate extreme and the hydroxyl one. We will place in the superior extreme of the original strain the phosphate group 5´ and in the other extreme the OH 3´. These positions will give us the direction reflected by the arrow. The complementary strand will have the same extreme labels but in opposite places. So first we will place the OH 3´ label in the superior extreme, and the phosphate 5´label in the inferior extreme, defining the direction reflected by the arrow.
Explain the relationship between the nucleus, gene,DNA,chromosome, and cell
What causes objects to change their motion? *
1 a force
2 the mass of an object
3 the velocity of an object
Answer: 1 a force
Explanation:
Answer:
answer is 1 hope this helps
7. During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus,
if a portion of the original strand is CAGGTTACG, then the new strand will be
a. CAGGTTACG.
c. GTCCAATGC.
b. GTCCTTAGC.
d. GTCCTTACG.
Answer:
i think its b i took the test but i forgot the answer
Explanation:
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Name the types of adaptation that animals and plants can have
Answer:
poison, thorns, sharp teeth
Explanation:
Match the term to its definition. (4 points)
Column A
1.
Neap tide
:
Neap tide
2.
Spring tide
:
Spring tide
3.
Tidal bulges
:
Tidal bulges
4.
Tides
:
Tides
Column B
a.
tide where there is the greatest difference between high and low water levels
b.
the rise and fall of sea levels due to gravitational forces
c.
tide where there is the least difference between high and low water levels
d.
two ocean bulges created on opposite sides of Earth due to the moon's gravitational pull and the ocean's resistance to the pull
Answer:
Neap tide - tide where there is the least difference between high and low water levelspring tide - tide where there is greatest difference between high and low water leveltidal bluges - two oceans bluges created on opposite sides of earth due to the moon gravitational pull and the ocean. resistance to the pulltide - the rise and fall of sea level due to the gravitational forceCompare the concentration of connective tissue cells found in bone with the concentration of those found in blood.
Answer: CONNECTIVE TISSUE is the most abundant tissue in the body which are widely separated from each other and intercellular substance (matrix) is present in considerably larger amounts. The principal cell of connective tissue are fibroblasts which makes fibres found in almost all connectiv tissues. Some are solid and strong (bone), while others are fluid and flexible( blood).
Explanation:
Connective tissues usually contain fibres present in the matrix which may be of semisolid jelly-like consistency or dense and rigid, depending upon the position and function of the tissue. There are three main types of connective tissue which include:
--> Loose connective tissue
--> Dense connective tissue and
--> specialised connective tissue.
The bone and the blood are considered to be an example of specialised connective tissue. This is so because they both contain a number of different tissues with specialized cells and unique ground substances.
The BONE consists of osteoblasts, osteocytes, and osteoclasts. It is considered to be a specialised connective tissue because the bone cells are surrounded by a matrix of collagen fibres strengthened by inorganic salts, especially calcium and phosphate.
The BLOOD consists of red blood cells, white blood cells, platelets. It is considered to be a specialised connective tissue because the blood cells are surrounded by fluid matrix known as plasma and connecta with other cells through its transport functions.
In COMPARING the concentration of connective tissue cells or bone and blood, the connective tissue cells of bone comsist of fibre and collagen which makes it dense and rigid while the connective tissue cells of blood does not contain any fibre, therefore it's flexible.
The population of peppered moths have changed over time. The population has changed from primarily light colored to dark colored moths. This is an example of...
a
Mimicry
b
Natural Selection
c
Selective Breeding
d
Camouflage
Answer: b
Explanation:
natural selection occurs when something adapted to the environment to give them an advantage or to survive
porque los alimentos se oscurecen?(platanos, palta, manzana, papa, etc) respondan pls✋
Answer:
Una enzima es una sustancia, generalmente una proteína, en la célula de un organismo que acelera las reacciones químicas.
Durante el pardeamiento enzimático, una enzima llamada fenolasa y otro compuesto orgánico que se encuentra en las células de la fruta llamados fenoles pasan por una reacción de oxidación cuando se exponen al oxígeno. La fenolasa regula la reacción, convirtiendo los fenoles en melanina.
Por lo general, las enzimas de la fruta están encerradas en tejido. Las enzimas están metidas en sus células, trabajando para madurar la fruta. Pero cuando esas células se descomponen, ya sea por una causa externa como si alguien muerde o corta la fruta o por causas naturales como el envejecimiento, las enzimas se liberan y entran en contacto con el oxígeno, lo que desencadena la reacción química y hace que la fruta se vuelva marrón.
Does anyone know why Mt. Vesuvius erupted? Was it natural or human caused?
Answer:
Explanation:
Natural
Which are steps that could be used to solve 0 = 9(x2 + 6x) – 18 by completing the square? Check all that apply.
18 + 81 = 9(x2 + 6x + 9)
18 + 9 = 9(x2 + + 6x + 9)
18+ 36 = 9(x2 + 6x + 36)
11 = (x + 3)2
= (x + 6)2
342 =
V99 = (x +
Nbbff
Explanation:
What is the name of this website
or the book?
Answer:
A and D
Explanation:
What are exons and introns and how are they dealt with in the cell?
Answer:
Exons are coding sections of an RNA transcript, or the DNA encoding it, that are translated into protein. Exons can be separated by intervening sections of DNA that do not code for proteins, known as introns.
Explanation:
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What property of silver may discourage people from buying silver jewelry?
A. it can’t float
B. it’s not green
C. it can tarnish
D. it’s not transparent
Answer: C
Explanation: Because if silver is tarnished it will lose its luster, thus making it not attractive.
3. Please rank the following topics from most to least interesting: (Fire Ecology - (FE), Noise Pollution and Mitigation Strategies (NP), College Majors and Careers in the Environment (CC), Great Pacific Garbage Patch (GP), EcoTourism
1.
2.
3.
4.
5.
6.