Answer:
The cellulose cell wall in plants
Explanation:
All eukaryotic cells, both plant and animals cells have a cell membrane which is an outer covering of the contents of the cell. Also plants and animals cells have many structures and cell organelles in common such as the mitochondria, the endoplasmic reticulum, ribosomes, golgi bodies, etc. However, plant cells have a more rigid structure than animals cells because of the presence of an extra structure known as the cell wall, covering their cell membranes.
The cell wall is a rigid layer that is found outside the cell membrane and surrounds the cell, providing structural support and protection. The cell wall is composed mainly of cellulose, but contains proteins as well as other polysaccharides too.
Another structure present in plants that serves to maintain the rigidity of the plant cell is the large central vacuole. The main role of the vacuole is to maintain turgor pressure by pushing the plasma membrane against the cell wall due to the pressure of fluids contained within it.
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
define asexual reproduction help plz
Describe the role of a nebula in the life cycle of a star. Please use your own words
Answer:Stars are formed in clouds of gas and dust, known as nebulae. Nuclear reactions at the centre (or core) of stars provides enough energy to make them shine brightly for many years. The exact lifetime of a star depends very much on its size.
A star can be defined as a giant celestial (astronomical) object that is made up of a luminous sphere of plasma bounded together by its own gravitational force.
Generally, a star consists of two (2) main interstellar hot gas and these are:
I. Hydrogen (H).
II. Helium (He).
Some of the examples of a star are;
Sun (the closest to planet Earth). Antares. Canopus. Vega. Betelgeus.
A nebula simply refers to a low-density cloud of interstellar hot gas (hydrogen and helium) and dust.
Basically, a nebula is needed for the creation or formation of a star.
Hence, the role of a nebula in the life cycle of a star include the following:
Stage 1: The temperature increases in the center of a nebula, thereby, causing the small nuclei of atoms to fuse.
Stage 2: The nebula gets hotter and brighter as the nuclear fusion sets off a chain reaction while providing enough energy to turn the nebula into a star.
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What does this model imply about the relationship between two processes All but one choice could apply
how animals in the taiga have adapted to survive the extreme cold of winter.
I
Answer:
Some animals have adapted to life in the taiga by hibernating when temperatures drop. Other animals have adapted to the extreme cold temperatures by producing a layer of insulating feathers or fur to protect them from the cold. In some instances, the adaptation of a seasonal change in color of feathers or fur protects the animal from its predators.
Answer:
Some animals have adapted to life in the taiga by hibernating when temperatures drop. Other animals have adapted to the extreme cold temperatures by producing a layer of insulating feathers or fur to protect them from the cold. In some instances, the adaptation of a seasonal change in color of feathers or fur protects the animal from its predators.
Explanation:
can somebody do 4 and 5 for me
Answer:
4. According to what is observed in the diagram, the maltose (substrate) binds to the maltase (enzyme) to obtain glucose molecules (product), in a process of hydrolysis of the maltose.
5. Three factors that can affect intestinal maltose activity - slowing it down or stopping it - are temperature, pH and substrate depletion.
Explanation:
4. Enzymes, such as maltase, have the function of making a reaction faster and decreasing the activation energy. Maltase is responsible for breaking down a maltose molecule, a dimer, into two glucose monomers, which is a hydrolysis reaction of the bonds that hold glucose molecules together.
5. There are several factors that can cause the decrease or cessation of the activity of an enzyme. Enzymes are activated when substrate is available and work best under ideal temperature and pH conditions. When there are alterations of these factors, the enzyme will reduce or stop the reaction in which it intervenes.
pH: when the pH increases or decreases it produces a decrease in the speed of reaction that catalyzes an enzyme. Very high or low pH levels can denature the enzyme and make the expected reaction not occur. Temperature: like pH, changes in temperature can slow or stop maltase activity. Substrate availability: It is a fact that when the specific substrate of an enzyme becomes depleted, the rate of reaction slows down, stopping when no substrate is available.Suggest why it is still useful to keep Linnaeus' specimens.
Answer:
As well as changing the way living things were classified, Linnaeus also changed the way they were named. He introduced a simpler method. ... This is rather like our system of giving people a first name and a surname. Each species has its own unique binomial which is the same throughout the world, thus avoiding confusion.
Explanation:
if a nutrient were in short supply in an ecosystem, how might it effect an organism
Answer:
Its leads to a deficiency
Explanation:
If a nutrient is in short supply in an ecosystem, it will lead to a deficiency of such nutrient in organisms that are in need of the nutrient.
Such a deficiency can lead to diseases in the ecosystem. If organisms that requires the nutrient cannot find an alternative, it will seriously affect their well being. Such deficiency often lead to very dire consequences for the balance of the ecosystem at large.What are functions of the roots in seed plants? (Choose all that apply)
stores food for the plant
aids in reproduction of the plant
anchors the plant
absorbs nutrients for the plant
Answer:
stores food for the plant
aids in reproduction of the plant
absorbs nutrients for the plant
During a discussion of body systems..which one is true?
F. Bone in the skeletal system contain bone marrow that mkaes white blood cells as part of the integumentary system.
G. Bones in the skeletal system work with muscles in the lympathic system to help you run.
H. Bones in the skeletal system help protect the lung organs in the respiratory system to exchange carbon dioxide for oxygen.
J. bones in the skeletal system store calcium that is used by reproductive system for communication.
Answer:
F should be the correct answer because that one say bones have bone marrow which is true and they make white blood cells
Conservation of mass the mass of a whole object
Answer:
Explore the Law of Conservation of Mass by demonstrating that the mass of a whole object is always the same as the sum of the masses of its parts. All objects and substances in the world are made of matter. ... Matter has two fundamental properties: matter takes up space and matter has mass.
Explanation:
Which statements best describe shared characteristics? Select two options.
A. Shared characteristics always exist in the common ancestor and in the modern organism.
B. Shared characteristics never exist in the common ancestor or in the modern organism.
C. The more characteristics organisms share, the more closely related they are.
D. The fewer characteristics organisms share, the more closely related they are.
E. Shared characteristics can exist among organisms that belong to different species. F. Shared characteristics only exist among organisms that belong to the same species.
Answer:
The more characteristics organisms share, the more closely related they are.
Shared characteristics can exist among organisms that belong to different species
Explanation:
A shared character can be regarded as a character that is shared by two lineages.
The statements that best describe shared characteristics
The more characteristics organisms share, the more closely related they are.Shared characteristics can exist among organisms that belong to different species.The classification of all living entities is based on extremely basic, universal traits.
Each group's organisms are subsequently subdivided into smaller groupings.
Each bigger group is divided into smaller groups based on more detailed similar shared characteristics.
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What is the optimal pH for Enzyme B?
Answer:
6,7.77.0
Please correct Ok ?
T/F Osmosis and diffusion are both examples of passive transport.
A.True
B.False
Both osmosis and diffusion are passive transport processes, meaning that no additional energy is needed for them to take place. In both diffusion and osmosis, particles move from an area of higher concentration to one of lower concentration.
The given statement "Osmosis and diffusion are both examples of passive transport" is True.
Passive membrane transfer methods are the most direct. Passive transport is a phenomena that happens spontaneously and doesn't require the cell to use energy to move. Diffusion is the process by which chemicals travel passively from a region of higher concentration to a region of lower concentration. A concentration gradient is a difference in the concentration of one substance throughout a physical region.Transport that is done passively is called diffusion. Until the concentration is the same across the space, a single substance has a tendency to travel from an area of high concentration to an area of low concentration.Based on the gradient of water concentration across the membrane, osmosis is the mechanism by which water diffuses through a semipermeable membrane. Osmosis moves just water across a membrane, and the barrier restricts the diffusion of solutes in the water, whereas diffusion distributes material across membranes and into cells.Learn more about the passive transport with the help of the given link:
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China rose is so beautiful.explain the colour and why rose is important for our life.
Answer:
Explanation:
China rose converts acidic solution to dark pink, basic solutions to green colour and has no colour change for neutral solutions. . The leaves, fruits and roots are decocted and used in the treatment of arthritis, boils, coughs etc. The fruit is applied to sprains, ulcers and wounds. The flower buds are used in the treatment of dysmenorrhoea, poor circulation, stomach pains and swellings.
any three importance of measurements
descriptive, diagnostic, and predictive. Descriptive is the most basic form of measurement.
this is the pic
it's science btw
5? ig thats my guess not sure
Vhat is the correct formula for trisilicon hexafluoride.
Answer:
xenon hexafluoride.
Explanation:
Answer:
Si₃F₆
Explanation:
please help me with this question:)
Answer:
all cells so the last one
5. Some advantages of sexual reproduction include: (select all that apply) *
a.genetic variation
b.improves chances of adapting to the envionment
c.helps species survive catastrophes
d.Certian genes work beter than other
Some advantages of the sexual reproduction include genetic variation. Genetic variation results into changes in the genetic material (DNA). Thus, the correct option is A.
What is Genetic variation?Genetic variation is the difference in the DNA (deoxyribonucleic acid) among individuals or the difference between different populations. The multiple sources of genetic variation include mutations and genetic recombination. Mutation is the changes in the genetic material of an organism which are the ultimate sources of genetic variation, however other mechanisms, such as genetic drift, contribute to it, as well.
Genetic diversity is important because it gives the species a better chance of survival through variations. However, the genetic diversity can be lost from the species when the populations get smaller and isolated from each other, which decreases a species' ability to adapt and survive better in the condition.
Therefore, the correct option is A.
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Which is an example of radiation?
A melting snowman sweats drop of water under a bright sun.
A smiling man roasts marshmallows over a wood fire.
A cook stirs vegetables in a frying pan over a gas burner.
Three pairs of bare feet and lower legs walk across black pavement.
Answer:
A: melting snowman sweats drop of water under a bright sun
Answer:
The correct answer is A.
4. Which part of the plant do we eat:
a. Cucumber:
b. Olive:
C. Broccoli:
d. Lettuce:
PLS HELP ME!!!!!!!!!!!!!!!!!!!!!!
Answer:
water/erosion- when water is in rocks/ minerals it erodes them and causes them to fall apart. water/deposition-water brings other materials into the land and they're sometimes formed into the rock i could even be previous weathered materiel. wind/erosion- wind can cause things to fall off of big boulders/mountains/rocks and cause them to fall apart. wind/deposition- wind can carry other materials onto the eroded land.
Explanation:
i passed grade 6 lol.
Difference between "Releasing" and "Inhibiting" hormones?
I've been stuck on this for a while, any help?
Explanation:
wheres the question? haha๑๑
1.Name one living (biotic) and non- living (abiotic) means of seed dispersal
that is involved in helping plants with seed dispersal.
2. What is the advantage for a plant to produce fruit that are delicious to
animals?
Answer:
1.abiotic- air and biotic-birds
2.producing delicious and good fruits for animals protect and help them to spread. delicious food attract animals like birds and other animals who are feed on them. when they eat the fruits and the seeds pass by unharmed. these way the seed dispersal occur of a plants.
Seed dispersal is a movement transport and spread of the seeds away from the parent plants. As plants have very limited mobility and transportation also includes some of the abiotic factors.
Winds, waves, gravity, and many more abiotic form of seed seed dispersal have been found. The biotic forms of seed dispersal include man, animals and birds. The more delicious is the plant the more is the chance of seed dispersal and hence is an added advantage to the plants. The seeds remain unharmed and many animals like to feed on them.Learn more about the living (biotic) and non-living (abiotic) means of seed dispersal.
brainly.com/question/13128124.
Which statement is evidence that the components of the genetic code are common to all organisms?
A. All animals have the same four nitrogenous bases in common with each other.
B. All eukaryotes have the same four nitrogenous bases in common with each other.
C. All living organisms have the same four nitrogenous bases in common with each other.
D. All prokaryotes have the same four nitrogenous bases in common with each other.
Answer:
C. All living organisms have the same four nitrogenous bases in common with each other.
Explanation:
Because all living organisms have the same 4 nitrogenous bases in common with each other but different sequences.
IF you see something dark or with a pole like figure then run and hide if you hear what it says it already too late
Answer:
stop being spoopy im scurred (._.)
Explanation:
eh still not scarry
~(￣▽￣)~
Which mutation below would result in the greatest amount of change in the proteins that code for a particular trait?
(Please help I will reward)
A. inserting three nucleotides
B. deleting three nucleotides
C. deleting one codon
D. deleting two nucleotides
Answer:
Mutations are errors in codons caused by changes in nucleotide bases. Some mutations may not have much effect. For example, if the codon GAA becomes the codon GAG, because the genetic code is degenerate, the codon will still code for the amino acid glutamate. Such ineffectual mutations are called silent mutations. Some mutations, however, can have a huge affect on coding for amino acids, which can in turn affect what proteins are produced, which can have a profound effect on cellular and organismal function.
The sequential series of nucleotide triplets that are positioned in the A site of the ribosome during translation. A. Primary structure B. Exons C. Promoter D. Reading frame
Answer:
The correct answer is D.
Explanation:
Reading frame is a sequence of codons determined by nucleotides that are read in groups of three from a specific translation start codon, that is, it is a linear sequence of codons or triplets in a nucleic acid. It is one of three possible reading alternatives of a nucleotide sequence of a series of triplets, this means that, in a double-stranded DNA molecule, there are 6 possible directions in which reading frames can be opened; three in the forward direction and three in reverse.