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:
What is one reason a cell would need to divide?
Answer:
Why Do Cells Need to Divide. Organisms, either unicellular or multicellular, are made up of cells. One of the characteristic features of cells is the division. Cells divide for many reasons, including growth, repair and regeneration, and reproduction. The two types of mechanisms of cell division are mitosis and meiosis.
Explanation:
What is the shape of DNA?
Answer:
hey friend..... here is your answer....
the shape of DNA is double helix
answer at least 5 of these questions.
if you could answer all of them that would be great
Answer:
you could literally just look them up
1. Deoxyribonucleic Acid
2. In biology, a gene is a basic unit of heredity and a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein. During gene expression, the DNA is first copied into RNA.
3. nucleus
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
4. As described above, DNA can be found in three organelles: the nucleus, mitochondrion, and chloroplast. Only eukaryotes have a nucleus, which is a large structure that's surrounded by a membrane. Nuclear DNA comes in the form of long, linear pieces of DNA called chromosomes.
Scientific developments have made forensic science a stronger discipline.
True
False
Answer:
Answer of this qurstion is true
How does the structure of DNA allow the right protein to be made?
Answer: Structure of DNA: double-stranded helix held by complementary base pairs. DNA carries the genetic information for making proteins. The four bases A, T, C and G make up the genetic code. The base sequence determines amino acid sequence in protein.
Explanation:
How does agriculture affect coral reef 5- 6 sentences .
Answer:
Agriculture negatively impacts coral reefs. Chemicals used by farmers, such as pesticides and fertilizers, runs off the land when it rains.
Coastal waters suffer from huge amounts of a variety of agricultural and industrial chemicals that are released into them. Fertilizers and pesticides used in agricul-tural development projects are discharged into the sea and might lead to coral reef destruction.
Answer:
Agriculture negatively impacts coral reefs. Chemicals used by farmers, such as pesticides and fertilizers, runs off the land when it rains.
When farming techniques harm the Great Barrier Reef. Sugar cane is the major agricultural crop grown within the Reef's catchments. ... Fertilisers are one of the major sources of nutrients entering the Reef. Fine sediments and the pesticides used on coastal floodplains also threaten water quality.
Explanation:
mark me brainlest
plz help it is really important
Answer:
answer one: during the day the sun's energy heats up land faster which makes the air above warmer
Explanation:
hope this helps!
Fill in the blank
DNA IS NOT “TURNED ON” ALL OF THE _____ IN ALL OF THE CELLS.
Answer:
time? maybe I'm not to sure but I wanted to help
Which of the following organs are involved with chemical digestion?Which of the following organs are involved with chemical digestion?
mouth, pancreas, stomach, small intestine
stomach, pancreas, pituitary, large intestine
esophagus, liver, small intestine, large intestine
small intestine, gall bladder, kidneys, mouth
Answer: Chemical Digestion = mouth, pancreas, stomach, small intestine
Explanation: Hope this helps!
Answer:
Chemical Digestion = mouth, pancreas, stomach, small intestine
Explanation:
A student reads that Cnidarians have two layers of tissue during development.
Which answer describes a possible tissue layer?
A)deuterostome
B)ectoderm
C)radial
D)pseudocoelom
Answer:
it is ectoderm
Explanation:
10)
What is point source pollution of an aquatic ecosystem?
A)
pollution of freshwater sources
B)
pollution from many sources that combine into one
pollution that occurs over a wide area; water that runs off from fields,
parking lots, and other land surfaces
D)
pollution that can easily be identified with a single discharge source, such
as an open pipe which drains into a body of water
Answer:
D
Explanation:
the point if of water pollution can be easily identified
Animals with which type symmetry 'conquered' the land?
How much of farmed aquaculture in the US consists of oysters?
Answer:
90%
Explanation:
Answer: $186 million or 36 million pounds
Explanation:
https://www.fisheries.noaa.gov/national/aquaculture/us-aquaculture
Newyork is near 40 degrees N. What general direction is air moving in Newyork
Answer:
The air in New York moves to the north.
Explanation:
At a global level, it occurs unequal warming of the atmosphere, which depends on many factors and varies with latitude. These temperature differences occur because solar radiation reaches the earth differently at different latitudes degrees. The result is the formation of convective cells of atmospheric air circulation: Hardley cell, Ferrel cell, and Polar cell.
The term convective cell refers to air getting warm, expanding, getting less dense, and ascending. During ascension, it gets colder because of the change in high, contracting, becoming thicker. Finally, it descends.
In each hemisphere, warm air ascends at the equator and approximately at 60º latitude. Cold air descends at approximately 30º latitude and the poles. These air masses circulation generates superficial winds that blow toward the equator between 0º-30º, and toward the poles between 30º-60º lat.
Ferrel cell occurs between 30º and 60º latitude. At 30º lat, the cold air coming from the north in the tropopause meets the cold air coming from 0º, and both descend to lower altitudes due to its density and low temperature. When these air masses reach the ground, they diverge. One part goes to 0º lat, while the other part goes forward to the north. As it moves north, it gets warmer for being at lower altitudes. At 60º, this warm air coming from the 30º meets the polar air coming from 90º, and as it is warmer it ascends again. When it ascends to the tropopause, it is pushed by new air and moves to the south again. While doing so, it loses heat and becomes denser, descending again at 30º. And so the cycle starts all over again. New York is located at 40º latitude approximately, so air goes forward to the north pole near the ground, but at 60º it elevates again. New York is then affected by the Ferrel cell.
In the attached image you will find the three cells, circulating in different directions.
8th grade science second page
Answer: Part A. 1. 159.5mm, 3. If they go 16cm per 29 years it would take 90 years to go 50cm 4. probably because the earthworms don’t go below 1 meter deep so rocks don’t go deeper.
Explanation:
Describe why food needs to be digested from large to small molecules.
Answer:
Food must be broken down into nutrients for the body to use for energy, development, and cell repair. Before the blood absorbs and transports nutrients to cells in the body, food and drink must be broken down into smaller nutrient molecules.
Which type of greenhouse gases have a human source?
nitrous oxide
water vapor
fluorinated
gases
O carbon dioxide
Answer:
carbon dioxide is correct
Answer: O Carbon dioxide
Explanation:
what are the two effects of world war one?
Answer:
1. Loss of almost an entire generation of young men by Europe.
2. Nationalism raised in the colonial empires
Explanation:
The First World War leads to destruction of empires. Numerous new nation-states were created. United States were forced to become a world power that in turn lead to the rise of Hitler and Soviet communism.
Effects of world war one are as follows:
1. Loss of almost an entire generation of young men by Europe.
2. Nationalism raised in the colonial empires
A garden contains 40 flowers, 30 of which are red. What is the frequency of red flowers?
Answer:
0.75
Explanation:
a frequency of 1.0 occurs when all the flowers are red
A garden that contains 40 flowers, 30 of which are red. Then, the frequency of red flowers is 75% of 1:3.
What is Frequency?Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as the temporal frequency for clarity, and is distinct from angular frequency. Frequency is usually measured in hertz (Hz) which is equal to one event per second.
Gene frequency is the fraction or percentage of a population which carries a particular allele at a particular gene locus. In this case, a garden has 40 flowers, in which 30 are red.
Therefore, the frequency of red flowers = Number of red flowers/ Total number of flowers
The frequency of red flowers = 30/ 40 = 75% or 1/3
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Plants and animals have a mutualistic relationship. Explain how.
Answer:
They connect through a cycle
Explanation:
Both plants and animals can be a food source for animals. Plants also create an environment so that animals can live with less complications
How might we determine if albinism is an inherited or acquired trait?
Answer:
In all types of OCA and some types of OA, albinism is passed on in an autosomal recessive inheritance pattern. This means a child or something else has to get 2 copies of the gene that causes albinism
What kind of inheritance do you think the trait for the pedigree shows
Answer:
The information from a pedigree makes it possible to determine how certain alleles are inherited: whether they are dominant, recessive, autosomal, or sex-linked. To start reading a pedigree: Determine whether the trait is dominant or recessive. If the trait is dominant, one of the parents must have the trait.
Explanation:
17.All reptiles reproduce by
a.) internal fertilization, and most are oviparous.
b.) internal fertilization, and most are viviparous.
c.) external fertilization, and most are viviparous.
d.) external fertilization, and all are ovoviviparous.
The tendency of a cell or an organism to maintain a stable internal environment is known as _______.
A.
homeopathy
B.
homology
C.
homogeneous
D.
homeostasis
How do we know that food isn't causing the population growth?
What are some skills that scientists must have to be successful?
Answer:
they have to be smart
Explanation:
...........
Answer:
They need to be creative, logical, analytical, and good at communication.
Explanation:
hope this helps!
PLEASE HURRY!!!
Include a bulleted list highlighting the important ideas you shared in your presentation.
Definition and description of gravity
Importance of gravity
Factors affecting gravitational forces between objects
Relationship between the masses of objects and the gravitational force between them
Relationship between the distance between objects and the gravitational force between
them
Answer:
1. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
2. The sun's gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun's light and warmth. It holds down our atmosphere and the air we need to breathe
3. distance between objects
masses of the objects
Explanation:
The magnitude of the gravitational force between two objects is given by
where G is the gravitational constant m1 and m2 are the masses of the two objects r is the distance between the two objects
By looking at the formula, we see that the gravitational force is affected only by two quantities:
- the masses of the objects, m1 and m2
- the distance between the objects, r
4. Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.
5. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
Hope i helped! xoxo
Answer:
you should make a powerpoint
Explanation:
1-the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
2-Gravity is very important to our everyday lives. Without Earth's gravity we would fly right off it. We'd all have to be strapped down
3-Newton's law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them.
Objects with greater mass have a stronger force of gravity between them. ...
Objects that are closer together have a stronger force of gravity between them.
4-5-Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
it's all from the internet
Is there an advantage for the different
anole species being able to occupy
different parts of a habitat?
Hello!
╰˚ ꒰☁️꒱ ʚ‧₊˚˖✦ Is there an advantage for the different anole species being able to occupy different parts of a habitat?₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊
₊˚ʚ꒷꒦˖╰ ˚ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊
First...
⭐What are anoles?Anoles are a genus of lizards native to the Caribbean, Central and South America. As some species can change color they have been called chameleons of America. There are 425 species according to the latest research.
♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧ ♡୨୧┈┈୨୧♡
⭐Is there an advantage for the different anole species being able to occupy different parts of a habitat?
Yes, since the Anolis sagrei inhabits humid lowland forests and dry lowland forests. Apparently it prefers areas that have very low or little ground cover (18, 23).The green anole lizard, Anolis carolinensis, has adapted to living in the tree canopy and can lead to speciation, Different species of anoles have different dewlaps, and very different vegetation.
I hope I've helped :D
Greetings
atte:
Ángela
❤️
Suppose you coated the leaves of a plant with petroleum jelly. How would the plant's rate of transpiration be affected?
Answer:
The rate of transpiration would decrease
Explanation:
the petroleum jelly would block the stomata of the leaves resulting in decreased transpiration rates
Petroleum jelly would inhibit the loss of moisture out of the stomata cells. Therefore, the rate of transpiration would be decreased.
What is transpiration?Transpiration exists the procedure of water movement via a plant and its evaporation from aerial parts, such as leaves, stems, and flowers. Water exists essential for plants but only a small amount of water brought up by the roots is utilized for growth and metabolism. The remaining 97–99.5% exists lost by transpiration. An example of transpiration exists when a plant absorbs water in its roots.
Hence, Petroleum jelly would inhibit the loss of moisture out of the stomata cells. Therefore, the rate of transpiration would be decreased.
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This shows cardiac muscle. This type of muscle is *
Answer:
Involuntary
Explanation:
Hope that helps ;)
Answer:
Involuntary
Explanation:
Cardiac muscle is also an involuntary muscle, found only in the heart. The cardiac muscle fibers all contract together, generating enough force to push blood throughout the body.