Spicules is the skeletal structures which occur in most sponges. They provide structural support, as well as determent against predators. Large spicules, visible to the bare eye are called as megascleres, while smaller, microscopic ones are called as microscleres. Spicule cell - reproduction is the incorrect option.
amoeboid cell - digestion
What is amoeboid cell?Amoeboid cells are the that have capacity to change shape due to the parts of the skeleton of the cell called cytoskeleton and plasma-gel which changes the consistency of the cell's cytoplasm. Amoeboid cells use a pseudopodia, or false foot, to move forward. They carry-out phagocytosis, which is to eat or ingest other cells.
collar cell - water current
The collar cells serve two functions. Firstly, they beat their flagella back and forth to force water through the sponge. The water brings in nutrients and oxygen, while it carries out waste and carbon dioxide. Second, the sticky collars of the collar cells pick up tiny bits of food brought in with the water.
epidermal cell - covering.
The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.
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Renewable energy
do you think renewable energy is gaining attention and progress is being made to increase the use of harnassing natural renewable power?
what do you think are the barriers that are preventing us from utilizing more renewable energy sources?
Answer:
yes it is doing
Explanation:
Renewable sources are those which can use again and again . We should use them to protect our natural resources
Substance A has a specific heat capacity of 0.452 J/g℃, Substance B has a specific heat capacity of 2.64 J/g℃. If an equal mass of both substances at room temperature was placed in a heated room, which substance would you expect to heat up faster?
Substance A or B?
The substance would you expect to heat up faster is Substance A, which has a specific heat capacity of 0.452 J/g℃.
What is specific heat capacity?The specific heat capacity is the amount of heat necessary to elevate 1 degree 1 kg of the substance. Its unity is J/gºC. We can calculate the heat that changes the temperature of a substance by the equation:
Q = mcΔT
Where Q is the heat, m is the mass, c is the specific heat capacity, and ΔT is the change in the temperature.
Thus, Substance A, has a specific heat capacity of 0.452 J/g℃.
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1. Why is Maya Lim excited about classroom bioprinters? 2. What parts of Maya Lim's job as a chemical engineer sound interesting to you?
Classroom bioprinters can be used to print literally any biological object, whereas a chemical engineer is responsible to use chemistry to develop processes and devices.
What is a bioprinter?A bioprinter is a device that combines cells and transcriptional growth factors, in order to generate structures similar to tissues and organs.
Moreover, a chemical engineer is aimed at exploring the chemical properties of matter to develop processes and devices.
In conclusion, classroom bioprinters can be used to print literally any biological object, whereas a chemical engineer is responsible to use chemistry to develop processes and devices.
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HELP!! Rank the following forms of water from most common (1) to least common (4) on Earth.
(a) ground water
(b) rivers and lakes
(c) glaciers
(d) oceans and seas
d\b\c\a
Can someone help me please?
The kind of population growth depicted by the graph is exponential growth.
What is exponential population growth?It is a kind of population growth that takes place in an environment where the population has no limiting factors. In order words, there are unlimited resources without any hindrance to the growth of the population.
Such a population grows rapidly as soon as it is able to adapt to its environment and continue growing at maximum biotic potential.
A graphical illustration of the exponential growth usually forms a J shape curve.
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what are the functions of plasma membrane??
btw hii
Answer:
Hi
Explanation:
It separates the content of cell from their external environment.
It controls the entry and exit of materials in nd out of cell
Which of the following is a way that minerals are used?
a. industry
b. construction
c. technology
d. all of the above
Please select the best answer from the choices provided
O
Answer:
maybe its are technology??
How does the circulatory and respiratory system work together?
Where is the nucleus usually located?
A. outside of the cell
B. in the center of the cell
C. moves between cells
Answer:
B
Explanation:
usually in the center . depends on what cell prokaryotic or eu
I really need help my grades go in tonight and this is my last day you will get full points
Answer:
the flat horizontal lines indicate phase change
Explanation:
As the substance changes phase from solid to liquid and liquid to gas, the temperature remains contant due to latent heat energy.
Energy is being used to break the intermolecular bonds during phase change, therefore there is no change in temperature.
which of the following statements best captures the main point of paragraph 4? a cell is the smallest unit that is truly alive. all cells are surrounded by a cell membrane. cytoplasm is gell-like material that fills all cell. plant cells have cell walls
Answer:
all cells are surrounded by a cell membrane
Explain how a stent can be used to prevent a heart attack
Match each field of study with its main focus.
Anthropology
?
Hydrology
?
Meteorology
?
Geophysics
?
Human culture
Water
Inside of Earth
Climate
Use the drop-down menus to answer the questions. the principle of dominance is a inheritance pattern. it states traits that are mask the traits that are .
The principle of dominance is a Mendelian inheritance pattern. It states traits that are dominant mask the traits that are recessive.
What is genetics?Genetics is the study of inheritance, the foundation of genetics was laid by Gregor Mendel. According to Mendel, the units of inheritance were called factors and are today called genes.
The principle of dominance is a Mendelian inheritance pattern. It states traits that are dominant mask the traits that are recessive.
Missing parts:
The principle of dominance is a ______ inheritance pattern.
It’s states traits that are ______ mask the traits that are______
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Answer:The principle of dominance is a
✔ Mendelian
inheritance pattern. It states traits that are
✔ dominant
mask the traits that are
✔ recessive
.
Explanation:
Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which factor are the species of birds responding to in the environment?
a.) symbiosis
b.) competition
c.) parasitism
d.) omnivores
Competition factor are the species of birds responding to in the environment. Thus, the correct option is B.
What is competition?If numerous bird species eat on the same tree species, there will be fierce competition for food. As a result of the competition, each species will seek out a certain portion of the plant to feed on, most likely the part of the plant where it will be easiest to outcompete the competitors for food.
As a result, we may deduce that the right response is "They have evolved to diverse niches as a result of competition."
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Answer:
simply jus competition
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Answer:
the process that would make them go as dark or light would be because they and blend in better to no the eaten it is called "latrell Selection" so in the Beach mice would stay light because they look like sand but if they were dark they would be easy to see that is why they are not there same thing for the forest but the other way around
if the forest changed to more sandy it would let lighter mice live there to but the dark mice would still live because it is not all sand i like it would be equal amount of dark and light mice because they would both have there spot to hide and just as vulnerable if the switched spots
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How are plants and animals similar and different as to how they transport molecules throughout their bodies?
Answer:The needs of a plant and animal are similar in some aspects and very different in others. Both need to transport food molecules around the organism but plants, for instance, do not use the transport system to fight disease.
Explanation:
Albinism is a recessive trait. A man and woman are both of normal pigmentation, but both have one parent who is albino (without melanin pigmentation). What is the probability that their first child will be an albino
Answer:
use the generation tree starting by the grandparents as first generation and the parents as second generation until the child as third generation
What is a control group?
A. An experiment where you only test two variables at a time.
B. An experiment that you don't change any variables.
C.An experiment where you only make quantitative observations.
D An experiment where data is collected.
Answer:
B. An experiment that you don't change any variables.
Answer:
B. An experiment that you don't change any variables.
Explanation:
What could be a good effect of a mutation?
A. DNA does not function properly.
B. DNA is destroyed.
C. Less variety in a population.
D. More variety in a population.
Answer:
The answer is D
Explanation:
because there different type which creates variety
The predictable sequence of reactions (alarm, resistance, exhaustion) that organisms show in response to stressors defines the _____ Group of answer choices life events approach. general adaptation syndrome. biomedical approach. cognitive theory of stress.
Answer:
General Adaptation syndrome
Are similarities between sharks and dolphins homologous or analogous?.
There are many similarities between sharks and dolphins such as countershading and presence of dorsal fins, two pectoral fins and a tail.
Are similarities between sharks and dolphins?Both sharks and dolphins have countershading in which their bellies are lighter than their backs. Dolphins and sharks both have dorsal fins on their backs, two pectoral fins, and a tail.
So we can conclude that similarities between sharks and dolphins are countershading and presence of dorsal fins, two pectoral fins and a tail.
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The similarities between sharks and dolphins are : Analogous
What are analogous structures ?Analogous structures are similar structures present in different species that do not share the same/common ancestor.
The similarities between sharks and dolphins are streamlined bodies and the possession of fins and they are analogous structures because they evolved differently for sharks and dolphins as they do not share a common ancestor.
Hence we can conclude that The similarities between sharks and dolphins are : Analogous
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Which sentence describes a river?
A. It contains water that is always in motion.
B. Many unusual organisms live there due to its unique water
chemistry.
C. It protects land from flooding by absorbing the force of ocean
storms.
O D. As sediments build up, it can turn into a marsh.
Answer:
I believe the answer is A; It contains water that is always in motion.
Explanation:
Which of these types of blood cell is not a type of white blood cell?
A. Lymphocyte
OB. Neutrophil
OC. Platelet
O D. Macrophage
Answer:
Platelets
Explanation:
________________________________________________________
Platelets are not a type of white blood cell because they only help treat wounds and slow down/stop you from bleeding.
they don't remove any germs. they only help treat your wound.
________________________________________________________
Hope this helped :)
This type of blood cell is not a type of white blood cell is C. Platelet.
What is a platelet?Platelets are not a type of white blood cell. They are actually small, colorless cell fragments that are involved in the clotting process of blood. White blood cells, on the other hand, include various types such as lymphocytes, neutrophils, and macrophages, which play important roles in the immune response and defense against infections.
Platelets, also known as thrombocytes, are small cell fragments that circulate in the blood. They are formed in the bone marrow along with other blood cells. Platelets play a crucial role in hemostasis, which is the process of blood clotting to prevent excessive bleeding.
When there is an injury or damage to blood vessels, platelets are activated and aggregate at the site of injury. They form a plug to seal the damaged blood vessel and initiate the clotting cascade, which leads to the formation of a blood clot.
The correct answer is C. Platelet.
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9. A protein molecule which is denatured, has
a. split into smaller molecules
c. Changed its shape
b. combined with another molecule d. been diluted
Answer: B. combined with another molecule
Explanation:
i just took the test
Proteins are macromolecules composed of amino acid chains joined through peptide bonds. A denatured protein molecule has changed its shape. Thus, option c is correct.
What is protein denaturation?Protein denaturation is a process where the proteins under unfavorable conditions like temperature, chemicals, and pressure result in an alteration in their functions.
The basic structural organization of the proteins contains primary, secondary, and tertiary formation that gets altered at high temperatures resulting in the breaking of the covalent bonds and disruption of the amino acid chain.
This results in the protein breaking and forming the primary structure that leads to alteration of the shape and conformation. This change results in loss of the function and activity of the protein.
Therefore, option c. the denatured proteins result in alteration in shape.
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which two mammals do you think is the least closely related? why?
Answer:
Chimpanzees and man
Explanation:
Ever since researchers sequenced the chimp genome in 2005, they have known that humans share about 99% of our DNA with chimpanzees, making them our closest living relatives.
But there are actually two species of apes that are this closely related to humans: bonobos (Pan paniscus) and the common chimpanzee (Pan troglodytes). This has prompted researchers to speculate whether the ancestor of humans, chimpanzees, and bonobos looked and acted more like a bonobo, a chimpanzee, or something else—and how all three species have evolved differently since the ancestor of humans split with the common ancestor of bonobos and chimps between 4 million and 7 million years ago in Africa.
The international sequencing effort led from Max Planck chose a bonobo named Ulindi from the Leipzig Zoo as its subject, partly because she was a female (the chimp genome was of a male). The analysis of Ulindi's complete genome, reported online today in Nature, reveals that bonobos and chimpanzees share 99.6% of their DNA.
Que seres vivos son heterotrofos ?
un organismo que deriva sus requerimientos nutricionales de sustancias orgánicas complejas.
differentiate between uniform and nonuniform motion
Answer:
Uniform motion is the motion in which body covers equal distances in equal intervals of timenonuniform motion is the motion in which body covers unequal distances in equal intervals of timeWhat causes the doldrums to be calm winds?
o a. mountain ranges provide friction, slowing the doldrums.
b. trade winds from the north and south collide, pushing the air up.
c. earth revolves around the sun, keeping doldrums stationary.
d. frequent storms bring heavy precipitation, pushing the air down.
Earth revolves around the sun, keeping doldrums stationary causes the doldrums to be calm winds. Thus, the correct option is C.
Why are the doldrums so calm?The Intertropical Convergence Zone, also known as the doldrums or calms by sailors due to its constant lack of wind, is the area where the northeast and southeast trade winds meet. It encircles the Earth near the thermal equator, however its exact location changes with the seasons.
The sunlight beams down directly on the area around the equator, the Doldrums are caused by solar radiation from the sun. Instead of blowing horizontally, this heating causes the air to warm and climb straight up. As a result, there is little or no wind for weeks at a time.
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Which element is found in nucleic acids but not in amino acids
a. carbon
b. hydrogen
c. nitrogen
d. phosphorus
Answer:
d. phosphorus
Explanation:
Phosphorus is the only element that is identified with nucleic acids.
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