Which type of cell has a cell wall?
A. Human skin cell
B. Animal cell
C. Fungi
D. Virus
Answers
Answer: Fungi
Explanation:
(Explanation from samiyah83)
Examples of organisms with cell walls are plants, fungi, protists (particularly molds and algae), and most bacteria (a few exceptions are mycoplasma and L-form bacteria) have cell walls. Animals and heterotrophic protists do not have cell walls.
Related Questions
If an rh-negative female conceives a child with an rh-positive male, what is the chance their fetus will be rh-positive?.
Answers
The fetus may have Rh-positive blood, inherited from the father, if a Rh-negative woman and a Rh-positive man become pregnant. (Approximately 50% of children with a Rh-positive father and a Rh-negative mother will be Rh-positive.)
What's an Rh Factor?
Some red blood cells include a protein known as a Rh factor (RBCs). Although most people do, not everyone possesses this protein. They have positive Rh. Rh-negativ people are those who don't carry the protein. If it's the mother's first pregnancy, rh incompatibility typically doesn't pose a concern. That's because during pregnancy, the mother's blood does not often enter the vascular system. The blood of the mother and the baby, however, may mix during delivery. In this case, the Rh protein is perceived as an alien substance by the mother's body. It may then start producing antibodies—proteins that serve as defenses in the event that the body is invaded by foreign cells—against the Rh protein.Learn more about the Rh factor with the help of the given link:
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PLEASE HELP ASAPP. WILL GIVE BRAINLIEST AND 5 STAR RATIBG
Answers
Answer: mass
Explanation:
there is nothing about material to heat. mixture, depends, it has to be a specific situation. heat does contain mass though.
what are the 4 macromolecules found in a cell that you can get from food?
Answers
a gene that can cause cancer when present in a single copy in a cell is called a(n)
Answers
a gene that can cause cancer when present in a single copy in a cell is called an Oncogene.
Oncogenes are genes that have the potential to cause cancer when mutated or overexpressed.
They are a type of gene involved in cell growth and division, and mutations in these genes can lead to uncontrolled cell growth and the development of cancerous tumors.
Oncogenes can be activated by a variety of mechanisms, such as mutations, chromosomal rearrangements, or changes in gene expression.
They are typically dominant, meaning that a mutation in one copy of the gene is sufficient to cause the oncogenic effect.
In contrast, tumor suppressor genes require both copies to be inactivated or lost in order to promote cancer development. Some examples of well-known oncogenes include HER2, KRAS, and TP53.
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Which of the following is the best example of a hypothesis?
A. What nutrients do plants need to grow?
B. If a plant is given fertilizer, it will grow faster.
C. Will plants grow faster indoors or outdoors?
D. Plants that grow quickly are better for landscaping.
Answers
Answer:
B
Explanation:
It gives an answer that can be tested against
dehydration synthesis reactions _____, whereas hydrolysis reactions _____.
Answers
Dehydration synthesis reactions build molecules, whereas hydrolysis reactions break molecules.
In dehydration synthesis reactions, two smaller molecules are joined together to form a larger molecule. This process occurs by removing a water molecule as a byproduct. It is commonly observed in the formation of polymers such as proteins, carbohydrates, and nucleic acids. Dehydration synthesis reactions require energy input and are typically associated with anabolic processes in living organisms.
Hydrolysis reactions involve the cleavage of larger molecules into smaller components by the addition of a water molecule. These reactions are commonly observed in digestion processes, where complex molecules are broken down into simpler units. Hydrolysis reactions release energy and are associated with catabolic processes in living organisms, enabling the extraction of nutrients and energy from consumed food or stored molecules.
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The complete question is:
Fill in the blanks:
Dehydration synthesis reactions _____ molecules, whereas hydrolysis reactions _____ molecules.
Some breeds of beef cattle have two color options, red and black, where the black version of the gene (B) is dominant over the red version (b).
The different forms of the beef cattle color gene are called ___
Answers
The different forms of the beef cattle color gene are called alleles. Alleles are alternate forms of the same gene, and they can be either dominant or recessive.
In the case of the beef cattle color gene, the black version of the gene (B) is dominant over the red version (b). This means that if both the dominant and the recessive alleles are present, the black color will be expressed in the cow. However, if two recessive alleles are present, then the red color will be expressed in the cow.
Dominant alleles are always expressed in an organism, while recessive alleles are only expressed when two of them are present. Dominant alleles can also be passed on to offspring, while recessive alleles can only be passed on if two of them are present.
This is why it is important to understand the genetic makeup of a breed before breeding. By studying the alleles and their expression, breeders can ensure that the desired phenotype is expressed in the offspring.
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Buffalo grass is a species of plant found on the grazing prairie of Wyoming. It is a tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves. This variation has allowed this type of grass to survive for many years in a harsh environment.
a. This is an example of which mechanism?
b. Explain why
Answers
Buffalo grass is tough due to the presence of silicates which reinforces the leaves of this plant and allows it to survive in harsh environment and this a classic example of adaptation.
Buffalo grass is basically a grass which is perennial to western North American. Buffalo grass is found in the short-grass as well as the mixed-grass prairies and is a very important year-round forage grass.
It is a very tough grass and this property of buffalo grass can be attributes to the presence of silicates, which are basically compounds that contain oxygen as well as silicon, in its leaves. This particular adaptation has allowed this grass to be drought resistant and survive for a lot of years in a very harsh environment.
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Match the codon to the base using the codon wheel below (read the bases from the inside out to the amino acids).
100 POINTS
Answers
The codon is a triplet of nucleotide bases in an RNA chain that code for amino acids during the process of translation.
During translation, the tRNA reads the mRNA sequence in triplet of nucleotides which is called as codon which is then used to decipher the amino acid to be added in the polypeptide chain.
As there are 20 amino acids, there is a redundancy of the codons, that is, many codons can code for one amino acid.
There is one codon that is always present at the beginning of the RNA which is called the start codon which is AUG. It initiates the translation process.
At the end of the RNA sequence is the stop codon which is UAA, UAG or UGA which bring the translation process to an end.
The codons given correspond to the following amino acids:
1. AUG - Methionine
2. GAA - Glutamic acid
3. CGG - Arginine
4. UGA - Stop codon
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an energy rich compound such as sugar
Answers
Answer:
Sugars provide living things with energy and act as substances used for structure. When sugars are broken down in the mitochondria, they can power cell machinery to create the energy-rich compound called ATP (adenosine triphosphate).
Explanation:
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to support the symbiotic hypothesis presented in the passage, mitochondria should be similar to bacteria in which of the following ways?
Answers
To support the symbiotic hypothesis presented in the passage, mitochondria should be similar to bacteria in possessing their own DNA
Option (A) is correct.
The symbiotic hypothesis proposes that mitochondria originated from a symbiotic relationship between an ancestral eukaryotic cell and a free-living bacterium. To support this hypothesis, mitochondria should exhibit similarities to bacteria.
One of the key similarities is the possession of their own DNA. Bacteria have their own distinct genetic material in the form of DNA, and mitochondria also possess their own DNA, known as mitochondrial DNA (mtDNA).
This similarity in DNA structure and function suggests a shared evolutionary origin between mitochondria and bacteria. Therefore, option A, "Possessing their own DNA," is the correct choice to support the symbiotic hypothesis.
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The complete question:
To support the symbiotic hypothesis presented in the passage, mitochondria should be similar to bacteria in which of the following ways?
A) Possessing their own DNA
B) Reproducing by binary fission
C) Having a cell wall
D) Engaging in photosynthesis
What drives surface currents?
differences in air temperature
differences in climate
differences in water density
differences in water salinity
Answers
Answer:
WHAT DRIVES SURFACE CURRENTS?
Surface currents in the ocean are driven by global wind systems that are fueled by energy from the sun. Patterns of surface currents are determined by wind direction, Coriolis forces from the Earth's rotation, and the position of landforms that interact with the currents.
DIFFERENCES IN AIR TEMPERATURE.
Movement of air due to differences in temperature between two locations is known as convection or advection. Convection is the term commonly applied to vertical movement of air, whilst advection is used in the context of horizontal displacement of air.
DIFFERENCES IN CLIMATE.
Weather refers to short term atmospheric conditions while climate is the weather of a specific region averaged over a long period of time. Climate change refers to long-term changes.
DIFFERENCES IN WATER DENSITY.
High temperature makes water less dense. As water gets warmer, its molecules spread out, so it becomes less dense. As it gets colder, it becomes denser. Most chemicals get denser when they turn from a liquid to a solid, but water is different.
DIFFERENCES IN WATER SALINITY.
As we have seen, most differences in salinity are due to variations in evaporation, precipitation, runoff, and ice cover. All of these process occur at the ocean surface, not at depth, so the most pronounced differences in salinity should be found in surface waters.
Explanation:
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Which two of the following organisms are tertiary consumers in this food web?
Answers
Answer:
Snowy owl and Rough-legged hawk
Explanation:
Hard to tell but I believe I'm correct
Why does the cell complete DNA replication?
Answers
Answer:
The cell must replicated DNA because when the cell divides, the daughter cells must have identical copies of DNA. DNA replication occurs in the S phase during interphase of the cell cycle.
Define photophosphorylation?
Answers
The photophosphorylation is the synthesis of ATP from ADP and phosphate in the plants using the light energy absorbed during the photosynthesis process.
Can someone please help me with this
Answers
DNA replication process is the event during which the molecule duplicates. It occurs in the interphase and involved different enzymes, a DNA molecule, and free nucleotides. Image attached.
Whatis DNA replication?DNA replication is the process through which DNI molecule duplicates. This event takes place during the S stage of the interphase. So when the cell divides during mitosis or meiosis, each cell will get a complete set of chromosomes.
DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.
The origin of the replication requires helicase enzymes to break hydrogen bonds and separate the two original strands. The topoisomerase enzyme is necessary to release tension. Other proteins are also needed to join the strains and keep them separated.
Once the molecule is opened, there is a region named replication forks. DNA polymerase makes the new nucleotides enter into the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs timine, and cytosine pairs guanine.
DNA strands are antiparallel, and replication occurs only in 5'-3' direction. So one of the strands will replicate continuously, while the other strain will be formed by short fragments known as Okazaki fragments.
Primers are needed to make the DNA polymerase work. Primers are small units of RNA and are placed at the beginning of each new fragment.
You will find the labelled Image in the attached files.
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genetic engineering is widely used in the field of agriculture and medicine. justify the impact of genetic engineering on humans and the environment.
Answers
Answer:
Biotechnology is the use of biological techniques and engineered organisms to make products or plants and animals that have desired traits.
Explanation:
People have used biotechnology processes, such as selectively breeding animals and fermentation, for thousands of years. Late 19th and early 20th century discoveries of how microorganisms carry out commercially useful processes and how they cause disease led to the commercial production of vaccines and antibiotics. Improved methods for animal breeding have also resulted from these efforts. Scientists in the San Francisco Bay Area took a giant step forward with the discovery and development of recombinant DNA techniques in the 1970s. The field of biotechnology continues to accelerate with new discoveries and new applications expected to benefit the economy throughout the 21st century.
In its broadest definition, biotechnology is the application of biological techniques and engineered organisms to make products or modify plants and animals to carry desired traits. This definition also extends to the use of various human cells and other body parts to produce desirable products. Bioindustry refers to the cluster of companies that produce engineered biological products and their supporting businesses. Biotechnology refers to the use of the biological sciences (such as gene manipulation), often in combination with other sciences (such as materials sciences, nanotechnology, and computer software), to discover, evaluate and develop products for bioindustry. Biotechnology products have made it easier to detect and diagnose illnesses. Many of these new techniques are easier to use and some, such as pregnancy testing, can even be used at home. More than 400 clinical diagnostic devices using biotechnology products are in use today. The most important are screening techniques to protect the blood supply against contamination by AIDS and the hepatitis B and C viruses.
Applications of Genetic Engineering
Genetic engineering means the manipulation of organisms to make useful products and it has broad applications.
Calculate the period of Mars if it is 1.45 AU from the sun.
Answers
The period of Mars if it is 1.45 AU from the Sun is mathematically given as
P=1.75
What is the period of Mars?Generally, the equation for the Keplers 3rd law is mathematically given as
p^2=a^2
Therefore
p^2=(1.45^3)
p^2=3.05
P=1.75
In conclusion, the period of Mars from the sun is
P=1.75
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Which of the following terms refers to a structure on both sides of the body or body part?
Bilateral
Ecchymosis
Edema
Observation
Answers
The term that refers to a structure on both sides of the body or body part is bilateral. Bilateral means "having two sides" and is commonly used in medical terminology to describe symmetrical structures or conditions that affect both sides of the body. The correct option is Bilateral.
For example, bilateral knee pain refers to pain that is felt in both knees, while bilateral hearing loss refers to a hearing impairment that affects both ears.
It is important for healthcare professionals to use the correct terminology when describing conditions or symptoms that affect the body. Using precise language helps to ensure that there is no confusion or misunderstanding between healthcare providers, and it can also aid in accurately diagnosing and treating patients.
Observation is the act of watching or monitoring a patient's condition, while edema refers to swelling caused by excess fluid in the body's tissues. Ecchymosis, on the other hand, is a medical term used to describe a bruise or discoloration of the skin caused by bleeding under the surface. Hence, Bilateral is the correct option.
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Which adaptation helps polar bears maintain a constant internal temperature (thermal homeostasis) in cold weather? three layers of fur blubber finding shade underground white skin
Answers
Answer: Blubber
Explanation:
it makes sense and I took the test
The adaptation that helps polar bears maintain a constant internal temperature (thermal homeostasis) in cold weather is a thick layer of blubber.
Animals such as whales and polar bears have a thick layer of fat known as blubber. Polar bears can stay warm because of this thick layer of blubber. This layer of blubber insulates their body in order to keep polar bears warm during extremely cold winter conditions.In polar bears, body temperature is maintained at 37° C due to their two layers of fur and a thick layer of blubber that insulate them.In conclusion, the adaptation that helps polar bears maintain a constant internal temperature (thermal homeostasis) in cold weather is a thick layer of blubber.
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Explain how enzyme function is like a lock and key.
Answers
Answer:
The lock and key model states that the active site of an enzyme precisely fits a specific substrate. The induced fit model states that the active site of an enzyme will undergo a conformational change when binding a substrate, to improve the fit.
true or false? a dermoid cyst is apparently an attempt by the unfertilized ovum to realize its potential by producing diverse tissues like those of a fetus.
Answers
It is accurate what is said. The unfertilized ovum appears to be trying to realize its potential by creating a variety of tissues similar to those of a fetus in the form of a dermoid cyst.
What is a dermoid cyst?An abnormal development of tissue called a dermoid cyst is encased in a sac-like pocket of cells. In an unexpected place, this tissue develops in or under your skin. Something that resembles skin is referred to as a dermoid. Any lump or bump that may contain fluid or other material is referred to as a cyst. Skin and skin structures that become imprisoned during fetal development are the source of dermoid cysts. Their cell walls are almost exactly like the outer skin's, and they may have several skin features like hair follicles, sweat glands, and occasionally even hair, teeth, or nerves. If neglected, spinal dermoid cysts may develop to a size where they endanger the spinal cord or nearby nerves. Despite being mostly non-cancerous, ovarian dermoid cysts can get rather big.To learn more about dermoid cyst, refer to:
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pth promotes the formation of which hormone?view available hint(s)for part bpth promotes the formation of which hormone?thyroid hormonescalcitonincalcitriolvitamin d
Answers
PTH (parathyroid hormone) promotes the formation of calcitriol, which is the active form of vitamin D.
Parathyroid hormone (PTH) plays a critical role in maintaining calcium and phosphate balance in the body. One of its key functions is to promote the formation of calcitriol, the active form of vitamin D. Calcitriol is synthesized in the kidneys from calcidiol (25-hydroxyvitamin D) through the action of the enzyme 1-alpha-hydroxylase.
When blood calcium levels are low, the parathyroid glands release PTH. PTH stimulates the activity of 1-alpha-hydroxylase in the kidneys, leading to the conversion of calcidiol into calcitriol.
Calcitriol, as an active hormone, exerts various effects to increase blood calcium levels. It enhances the absorption of dietary calcium and phosphate from the intestines, promotes the reabsorption of calcium in the kidneys, and stimulates the release of calcium and phosphate from bones.
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Constriction of the ________ decreases hydrostatic pressure in the nephron's filtering structures; the _________.
Select one:
1. Afferent arterioles, glomerular capillaries
2. Efferent arterioles, proximal convoluted tubules
3. Renal vein, peritubular capillaries
4. Renal arteries, juxtaglomerular apparatus
5. Vasa recta, ascending loop of Henle
Answers
As stated in the preceding statement glomerular capillaries, afferent arterioles
What does hydrostatic pressure mean?The definition of hydrostatic pressure is. "The pressure that a liquid at equilibrium experiences at any given time as a result of the force of gravity." As the gravity of the fluid increases that whenever a downward pressure is applied, hydrostatic pressure directly proportional to the distance measured from the surface.
What does osmosis' hydrostatic pressure mean?Osmotic pressure, which is connected toward the protein concentration on each side of a membrane forcing water to towards the region had greater concentration, is different from hydrostatic pressure, which is the pressure of body water against a membrane.
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can anyone please tell the answer i have given the image so anyone please answerthis question
plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Answers
Answer:
The first one is Synthesis
The second one is Single displacement
The thrird one is Combustion
The fourth one is Double displacement
Regions of the chromosomes where non-sister chromosomes cross over are called
tetrads
chiasmata
kinetochores
homologs
Answers
Answer:
Regions of the chromosomes where non-sister chromosomes cross over are called chiasmata.
What type of system is required to maintain the amount of sugar in the blood at a certain
level, making sure it does not rise too high or fall too low?
Answers
Answer:
The Digestive system.
Explanation:
Even though the Cardiovascular system pumps the blood in the body, blood sugar is dependent on the regulating hormones insulin and ketone. Which are created in the liver. And the liver is part of the Digestive system. Diabetes, hypoglycemia and hyperglycemia are results of a faulty liver.
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Will award brainlyist
Answers
Answer:
The answer to the problem would be C.
what causes the color change signaling the completed titration of sodium oxalate with potassium permanganate?
Answers
The color change signaling the completed titration of sodium oxalate with potassium permanganate is caused by the redox reaction between the two compounds.
In this reaction, potassium permanganate (KMnO4) acts as a strong oxidizing agent, while sodium oxalate (Na2C2O4) acts as the reducing agent. As the titration progresses, the deep purple color of potassium permanganate fades due to the reduction of manganese ions (Mn) from +7 to +2 oxidation state, forming a colorless manganese salt. When all the sodium oxalate has reacted, there are no more reducing agents available to reduce the manganese ions.
The next drop of potassium permanganate added will not be reduced, causing a persistent pink color in the solution, which indicates the endpoint of the titration. This color change signifies that the reaction is complete, allowing us to determine the concentration of sodium oxalate in the sample. The color change signaling the completed titration of sodium oxalate with potassium permanganate is caused by the redox reaction between the two compounds.
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Fungi include which living organisms?
Answers
Answer:
Yeasts and molds.
Explanation:
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