Answer:
the answer is A
Explanation:
Answer:
A. the magnetic field
Explanation:
Have a nice day/night :D
2. Prokaryotes differ from eukaryotes by all of the
following characteristics EXCEPT:
A. kinds of nucleotides in their DNA
B. structure of their flagella
C. structure of their plasma membranes
D. structure of their chromosomes
E. methods of cell division
Answer:
C. structure of their plasma membranes
Explanation:
hope it helps
How many sugar phospha te backbones are in one strand of DNA?
Answer: Two
Explanation: In double-stranded DNA, the molecular double-helix shape is formed by two linear sugar-phosphate backbones that run opposite each other and twist together in a helical shape. The sugar-phosphate backbone is negatively charged and hydrophilic, which allows the DNA backbone to form bonds with water.
Why might parents who don't show the trait of albinism have children who do?
Answer:
This trait is rare when it occurs. Some genes depend on other genes to be expressed, so in most cases a trait is denied an expression. But its still there, so it passes down to generation until it gets expressed.
Explanation:
Answer:
Because it's a recessive trait
Explanation:
There are two chromosomes that determine your biological sex: XX for the female and XY for the male. You inherit one X chromosome from your mother and one X or Y chromosome from your father, which is what determines your sex.
A certain inheritable genetic condition can be recessive or dominant. If it's dominant, it shows even if just one chromosome carries that condition. If it's recessive, it has to be in both ones (or just the x one or just y if you're male. That's why some conditions, such as daltonism, affect men more that women).
For example, blue eyes are a recessive trait, brown eyes are a dominant trait. If your parents are both blue eyed, you will surely have blue eyes as well. The same can't be said if both of your parents have brown eyes: they might still be carrier of the blue eyed trait (both of them have to), in which case you would have a 25% chance (1/4) to have blue eyes (½ to inherit the carrier chromosome from your mother; ½ from your father). The same can be said about albinism
clearing of these has a harsh effect on animal population. What is it called?
Describe Why are trochophores of interest to biologists?
Answer:
Because it is also one of the larval stages in some other groups of invertebrates, and are used by biologists to deduce evolutionary relationships among different groups of invertebrates
Explanation:
hope it will help you.
help please 30 points will give brainliest
Plants release the waste ___________ during cellular respiration and ____________ during photosynthesis.
fill in the blanks
Plants release the waste carbon dioxide during cellular respiration and oxygen during photosynthesis.
When humans perspire, water, urea, and salts containing sodium are removed from the blood. Drinking water during extended periods of physical exercise replenishes the water but not the sodium. This increase in water dilutes the blood and may result in the concentration of sodium dropping low enough to cause a condition known as hyponatremia. Symptoms of hyponatremia include headache, nausea, and lack of coordination. Left untreated, it can lead to coma and even death. The body has a variety of feedback mechanisms that assist in regulating water and sodium concentrations in the blood. The kidneys play a major role in these mechanisms, as they filter the blood and produce urine. The best way to reduce the symptoms of hyponatremia would be to
Answer:
The best way to reduce the symptoms of hyponatremia is to replace the body's sodium.
Explanation:
As seen in the question above, sweating causes the body to lose water and salts, such as sodium. We know that the excess of sodium in the body is harmful, however, the lack of sodium is also harmful, and can cause hyponatremia.
The loss of water in sweating can be reversed with water intake, but the loss of sodium must be reversed with sodium intake and the best way to do this is by eating salty foods. Sodium is one of the components of the salt used in the preparation of foods. In that case, when an individual eats salty foods, after having lost sodium molecules in perspiration, he will be replacing the lost sodium.
Does anyone know why Mt. Vesuvius erupted? Was it natural or human caused?
Answer:
Human caused i think?
Explanation:
DNA double helix. Hydrogen bonds break and helix opens. Each strand of DNA acts as a template for synthesis of a new, complementary strand. Replication produces two identical DNA double helices, each with one new and one old strand.
Answer:
The process described above is known as DNA replication.
Hope this helps you! Have an amazing day!
1- Define Photosynthesis.
Answer: the process in which plants use sunlight to synthesize food from carbon dioxide and water.
Explanation:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Many cellular processes are performed by cells. A typical cell and a common process are shown in the diagram below.
Which of the following is the best reason this cell is going through the process shown?
to reproduce another cell
to compete with another cell
to maintain homeostasis of the cell
to provide protection for the cell from the environment
are shown in the diagram below.
Commonly found fossils are of the ______ type.
A. print
B. petrified
C. carbonized
Please help, ASAP.
Answer:
C. carbonized
Explanation:
The mode of fossilization of these inclusions varies, but carbonization is most common.
state the taxonomic family to which the virus that causes EVD belongs
Ebolavirus, genus of viruses in the family Filoviridae, certain members of which are particularly fatal in humans and nonhuman primates. In humans, ebolaviruses are responsible for Ebola virus disease (EVD), an illness characterized primarily by fever, rash, vomiting, diarrhea, and hemorrhaging.
Compare cladistics with Linnaeus's classification
Organisms are classified into Kingdoms based upon basic characteristics. An organism has a nucleus in its cell, is multicellular, and produces its own food for energy through the process of photosynthesis.
Answer:
kingdom plantae because of process of photosynthesis
The behavior of an organism is influenced by both internal and external factors. How might a bear be influenced by external factors in its environment? A. A decrease in the number of fish causes bears to start consuming more plants. B. An increase in hunting causes bears to stay in covered areas and avoid humans. C. A decrease in temperature causes bears to look for food during the day instead of at night. D. all of these
Answer:
D. all of these
Explanation:
I just got it right in study island (:
Answer:
it's D
Explanation:
The real length of one villus is 0.8 mm
Calculate the image length if the villus is viewed at a magnification of x20
magnification = size of image / size of real object
Answer:
Explanation:
Re arrange formula=Size of image=Magnification*size of real image
0.8mm*20=16mm
The image length will be "16 mm". A further explanation is below.
Given:
Magnification,
20Size of real image,
0.8 mmAs we know the formula,
→ [tex]Magnification = \frac{Size \ of \ image}{Size \ of \ real \ image}[/tex]
or,
→ [tex]Size \ of \ image=Magnification\times Size \ of \ real\ image[/tex]
By substituting the values, we get
→ [tex]=20\times 0.88[/tex]
→ [tex]= 16 \ mm[/tex]
Thus the response above is correct.
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Explain how organisms in both of the ecosystems are dependent on their environmental interactions with other living things and with nonliving factors.
Answer:
Explanation:Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors. ... Mutually beneficial interactions, in contrast, may become so interdependent that each organism requires the other for survival.
The organism that considered for an ecosystem that should be dependent on the environmental interactions should be explained below,
Environmental interactions:The organism and the organism population should be based on the environmental interactions along with the other living things also even with the non-living things of factors.
On the other hand, Mutually beneficial interactions should be considered as the independent where each and every organism should needed other for the survival purpose.
learn more about an organism here: https://brainly.com/question/18167856
What nitrogen base does Cytosine pair with
Answer:
Guanine
Explanation:
There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine)
Adenine always bonds with thymine, and cytosine always bonds with guanine.
Which of the following is NOT an example of a biotic factor in an ecosystem?
F.
Grasses
G.
Bacteria
H.
Beetle
J. Water
Why did the size of the caribou population decrease?
Answer:
The herds have been declining in recent decades due to a complicated mix of factors including hunting, disease, diminished food availability, and climate change, the report explains.
The shark still has identical skeleton to previous sharks. What other way can you prove evolution occurred if fossil evidence does not show any?
50 points and brainliest
Type 2 things that you learned that are unique to humans’, flatworms’, and plants’ waste removal systems.
(two each)
real answers please
Explanation:
while these infections can occur in cows and pigs, it isn't an animal-specific condition. Tapeworms can also infect humans, although it's not a common infection. The Centers for Disease Control and Prevention (CDC) estimates there are less than 1,000 new tapeworm infections in humans in the United States eachwhile these infections can occur in cows and pigs, it isn't an animal-specific condition. Tapeworms can also infect humans, although it's not a common infection. The Centers for Disease Control and Prevention (CDC) estimates there are less than 1,000 new tapeworm infections in humans in the United States each
during an experiment scientists study a portion of a gene found in the white mouse. they determined that the following sets of codons has been translated into a series of three animo acids shown below
mRNA sequence- GCA-UUA-UCG
amino acids sequince- alanine - leucine - serine
which of the following would be the expected outcome of this same set codons were to be found in humans genes
The human cell would be unable to translate the mRNA codons.
The sequence of amino acids would be completely different in the human.
The amino acid sequence would be identical in the human cell.
The human cell would be converted into a mouse cell.
Answer:
the amino a acid sequence would be identical to human cell
becuuse the codes sequencing is simialr in all animals
1.) what is the optimal pH for pepsin? where is pepsin found?
2.) what is the optimal pH for salivary amylase? what substrate does it act on? where is it found?
Answer: 1. The digestive power of pepsin is greatest at the acidity of normal gastric juice (pH 1.5–2.5). 1.0–2.0
The optimum pH for pepsin activity of 1.0–2.0 is maintained in the stomach by HCl. When the pH of the medium increases to values greater than 3.0, pepsin is almost completely inactivated. 2. The optimum pH for the enzymatic activity of salivary amylase ranges from 6 to 7. Above and below this range, the reaction rate reduces as enzymes get denatured. The enzyme salivary amylase is most active at pH 6.8. around 7
Salivary α‐amylase has a short‐lived action. In fact, it is swallowed with chewed food and subsequently inactivated by extremely low gastric pH; amylase in fact has an optimal pH around 7, and the pH of saliva is generally between 6.4 and 7.0.
Explanation:
how to calculate the mass of sodium atom?
Answer:
22.989769
The relative atomic mass of sodium is calculated by dividing the atomic mass of sodium by the unified atomic mass unit, which is 1.66*10-27 kg. The number of 23 amu means that a normal, or stable, sodium atom weighs 23 unified atomic mass units.
Explanation:
Hope this helped Mark BRAINLIEST!!!
3) identify and describe three abiotic characteristics of ecosystems. Give an example of how each
characteristic could be affected by a human activity
Answer:
The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.
Explanation:
In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.
Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.
--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.
--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.
--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.
Describe some of the changes in the land and in life-forms that occurred at the end of the Paleozoic Era.
during the end of the paleozoic era it was probably one of the greatest mass extinctions on earth and the land started to break up and move around to form what the world looks like today
identify the function of the vacuole. what is the funtion of the vacuole. please explain
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:
distinguish between active and passive immunity
Answer:While active immunity occurs when an individual produces antibodies to a disease through his or her own immune system, passive immunity is provided when a person is given antibodies.
Explanation: