Answer:
On the basis of light and electron microscopic morphology, the protozoa are currently classified into six phyla. Most species causing human disease are members of the phyla Sacromastigophora and Apicomplexa
Explanation:
*Urgent*
Cell phones, radar, and televisions are examples of devices that function by
using electromagnetic waves. What property of electromagnetic waves makes
them useful for phone, radar, and television signals?
A. Electromagnetic waves cannot be changed.
B. Electromagnetic waves can travel long distances.
C. Electromagnetic waves travel at different speeds.
D. Electromagnetic waves are harmful at high frequencies.
Answer:
es la C. Electromagnetic waves travel at different speeds.
The correct option is B i.e. Electromagnetic waves can travel long distances.
what are electromagnetic waves?Electromagnetic waves, or EM waves, are waves that are formed when an electric field and a magnetic field vibrate together. EM waves, in other words, are made up of oscillating magnetic and electric fields. When an electric field collides with a magnetic field, electromagnetic waves are created. As a result, they're called 'electromagnetic' waves.
An electromagnetic wave's electric and magnetic fields are perpendicular to one other (at right angles). They are likewise perpendicular to the EM wave's direction.
Cell phones employ radio frequencies, a type of electromagnetic energy found between FM radio waves and the wavelengths used in microwave ovens, radar, and satellite stations on the electromagnetic spectrum. Ionizing radiation, the type that destroys DNA, is not emitted by cell phones.
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1. Which of the following is not a renewable energy source?
a. Electricity created by a turbine powered by water moving through a dam.
b. Electricity created by a turbine powered by wind.
C. Electricity created by solar power from the sun's rays.
d. Electricity created by burning coal or wood.
Answer:
d. Electricity created by burning coal or wood.
Explanation:
It D because the electricity is burning coal (non-renewable source) or wood. Burning wood destroys animals or even people's homes. Rest are a renewable energy source.
in pea plants , green peas are a recessive trait and yellow peas are a dominant trait , how can two plants with yellow peas produce offspring with green peas
Explanation:
if the alleles are heterozygous, they'll produce a green peas. the ratio of yellow to green would be 3:1
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Which of the following describes coccolithophores?
a.) a type of algae in which the chlorophyll pigments dominate the visible color that resembles a grassy to apple green
b.) a type of filter feeder that siphons food particles through a mucous membrane filter
c.) a type of single-celled phytoplankton that lives ubiquitously throughout the upper strata of the ocean
Coccolithophores is a type of single-celled phytoplankton that lives ubiquitously throughout the upper strata of the ocean. The correct option is c.
What is phytoplankton?Phytoplankton are autotrophic members of the plankton community and an important component of ocean and freshwater ecosystems.
Aquatic food webs are built on phytoplankton and algae. Primary consumers such as zooplankton, small fish, and crustaceans consume them. Fish, small sharks, corals, and baleen whales eat the primary consumers.
They provide food for a diverse range of sea creatures in a healthy ecosystem.
Phytoplankton, also known as microalgae, are algae that, like terrestrial plants, contain chlorophyll and require sunlight to live and grow.
A coccolithophore is a type of phytoplankton that is unicellular and eukaryotic.
According to Robert Whittaker's Five Kingdom classification, coccolithophores belong to the kingdom Protista, or the clade Hacrobia, according to the newer biological classification system.
Thus, the correct option is c.
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4. What are the limitations in generalizing findings from model organisms to human biology?
Answer:
d
Explanation:
Our traits come from ______material.
Answer:
Genetic
Explanation:
A student forgets to mix the second tube of the serial dilution. How might this affect the subsequent dilutions?
pecies like fish and turtles have many predators. These species produce more offspring than will survive. Which of the following correctly addresses an advantage and disadvantage of the overproduction of offspring?
1.Species have an increased chance of survival and parents are able to care for the young
2. Competition of resources in the environment is reduced and species have a decreased chance of survival.
3. Overproduction of one species can threaten another species and species can become resistant to medicine.
4. Populations of species have increased genetic variation and competition for resources in the environment is increased.
Answer: D
Explanation: it’s unbiased and makes the most sense
Answer:
D
Explanation:
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You are having a party and the carrot sticks have become limp, what might you do to make the carrots crisp (turgid) again? What is occurring in the cells?
Answer:
Cut celery can be placed in a bowl of water until crisp. Carrots – cut a little off the bottom of the carrot (not stem end) and place upright in a glass of water until crisp. When the cells are full of water, they grow large and are packed closely together, making the carrot turgid. Conversely, when the cells lose water, they shrink and the carrot shrivels.
Explanation:
Which compound features two hydrogen atoms and one oxygen atom, and is
necessary for life?
Water
Ammonia
Amino acid
Phosphate
Answer:
Water
Explanation:
The chemical formula is H2O, which means two hydrogens and one oxygen
Water is also necessary for life (you drink it every day!)
Red Cardinal
Which of the following is a nonliving component
required by a red cardinal to survive?
A. Carbon dioxide
B. Seeds, berries, and insects
C. Oxygen
D. All of the above
Answer:
d all of the above
Explanation:
Which ones are atoms and which are molecules? (38 points)
Ammonia, Chlorine, Silver, Iron, Water, Mercury, and Lithium.
Answer:
Sliver iron and water are atoms the rest or molecule s
What are the 4 most common lengths of long distance races?
Question 1 options:
1 mile, 2 mile, 3 mile, 4 mile
1 kilometer 2 kilometer, 3 kilometer, 4 kilometer
5 mile, 10 mile, 13 kilometers, 26 kilometers
5 kilometers, 10 kilometers, 13.1 miles, 26.2 miles
Answer:
D. 5 kilometers, 10 kilometers, 13.1 miles, 26.2 miles
Explanation:
This is the only one with 26.2miles in it.
Therefore, D is the correct answer.
The information is in the picture below:
A cactus cell comes to you with the following complaint: "I AM SOOoo
HUNGRY!!!! I feel like I haven't eaten in days!" Which organelle is not
functioning?
photosynthesis?
Explanation:
Is hunting a density-dependent or density-independent limiting factor?
Answer:
The Balance of Hunter & Hunted
In some cases imbalances in predator-prey relationships create density-dependent limiting factors.
Explanation:
Answer:
density independent
Explanation:
just because
what are the phases of mitosis
Answer: These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
Explanation: I hope that helps!
Help ASAP Please
Thank You !!
Answer:
it is the third sentence
What are the differences between three types of inertia?
Answer:
Explanation:
Inertia of rest - An object stays where it is placed, and it will stay there until you or something else moves it. ( Dust particles stay at rest until you shake a carpet.)
Inertia of motion - An object will continue at the same speed until a force acts on it. ( Body going forward when a car stops.)
Inertia of direction - An object will stay moving in the same direction unless a force acts on it. ( One's body movement to the side when a car makes a sharp turn.)
Drag the correct labels to the image. Not all labels will be used.
Ricky notices a similarity between a fried egg and the diagram of a cell. Which cell organelles is Ricky likely to associate with the parts of the eg
Answer:
1. plasma membrane
2. cytoplasm
3. nucleus
Explanation:
What is weather? and what is the 4 seasons
Please help ASAP!!!
A gene has four possible
alleles for coat color and
there are four different colors
of animal coats found in a
given population. What
causes this?
A. codominance
B. incomplete dominance
C. multiple alleles
Answer:
C.
Explanation:
it says four possible alleles. which is Multiple alleles
What are some examples of energy storage molecules
Answer:
Living organisms use two major types of energy storage.
Energy-rich molecules such as glycogen and triglycerides store energy in the form of covalent chemical bonds. Cells synthesize such molecules and store them for later release of the energy.Explanation:
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what 2 parts of a chlorplast does photosynthesis take place
Answer:
The Grana and The Stroma.
Explanation:
I hope this helps u! :D
Answer: Photosynthesis occurs in geranium and stroma parts of chloroplast.
Explanation:
Chloroplast is an organelle covered by double membrane. Inner membrane is folded inside to form lamellae. The lamellae are stacked one above the other to from geranium. There are many grana in a single chloroplast. The remaining matrix consisting of cytoplasm is termed stroma. In the stroma are present other cytoplasmic inclusions like fragments of DNA and ribosome, etc.
Photosynthesis occurs in 2 steps:
1. Hill's reaction or Light reaction: It occurs in presence of light in geranium part of chloroplast.
2. Dark reaction or Blackmann's reaction: It does not require light directly, occurring irrespective of presence or absence of light. However, it is dependent upon the end products of light reaction. it occurs in stroma part of chloroplast.
The answer may be supplemented by viewing the diagram of electron microscopic structure of chloroplast from any book one may have, covering photosynthesis.
Which represents a short-term storage for carbon?
A Coral reefs formed from calcium carbonate.
B. Coal formed from plants that lived long age
C. Limestone rocks quarried at Earth's surface.
D. Carbohydrates stored in fruits and vegetables.
Carbohydrates stored in fruits and vegetables represent the short-term storage for carbon.
What is Carbon?Carbon is a chemical element that is very abundant on the surface of the earth. It exists in nature in its pure forms like Graphite and diamond. It is also required for plants and animals to perform their metabolic activities with the addition of certain other compounds.
Carbon compounds are held for the shortest amount of time in fruits and vegetation.
Therefore, Carbohydrates stored in fruits and vegetables represent the short-term storage for carbon.
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Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction: Fe + O2 → Fe2O3
Answer:
This question is incomplete, the complete part is as follows:
This equation is unbalanced. Which of the following is the correct balanced equation for this reaction?
A. 4Fe + 3O2 → 2Fe2O3
B. 3Fe + 4O2 → 2Fe2O3
C. 2Fe + 4O2 → 3Fe2O3
D. 3Fe + 3O2 → 4Fe2O3
E. 4Fe + 4O2 → 3Fe2O3
The answer is A. 4Fe + 3O2 → 2Fe2O3
Explanation:
This question involved a chemical reaction between iron element (Fe) and atmospheric oxygen (O2) to produce iron oxide. The equation is given as follows:
Fe + O2 → Fe2O3
However, this chemical equation is NOT balanced and not in accordance with the law of conservation of matter. To balance this equation, we have to make sure that the number of atoms of each element on the reactant side is equal to that on the product side. Hence, we use COEFFICIENTS. The balanced equation is given below;
4Fe + 3O2 → 2Fe2O3
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Identify the most efficient way to protect biodiversity. Explain your reasoning.
Answer:
Protect habitat
Actually a mass extinction event and the adaptive radiation that follows has been great for biodiversity in the past
Explanation:
Answer:
Hi there!
The most efficient way to protect biodiversity is by using habitat preservation. Habitat preservation helps all species in an ecosystem.
Explanation: This is the original copy of Boriscat's answer
Wildlife conservation is the preservation and protection of animals, plants, and their habitats. By conserving wildlife, we're ensuring that future generations can enjoy our natural world and the incredible species that live within it.
another answer:
Preserving habitats is essential to preserving biodiversity. Migratory species are particularly vulnerable to habitat destruction because they tend to inhabit more than one natural habitat. Altering a natural habitat even slightly can result in a domino effect that harms the entire ecosystem.
Another answer:
Habitat preservation is the best option for the species in an ecosystem not only does it help those in danger and as well as protect biodiversity but it also helps all species in an ecosystem.
WHY IS IT important to protect animals? not an answer just a q and a :D
For maintaining a healthy ecological balance on this earth, animals, plants and marine species are as important as humans. Each organism on this earth has a unique place in food chain that helps contribute to the ecosystem in its own special way. But, sadly today, many of the animals and birds are getting endangered.
Pick which one suits you best :)
I suggest the first one!
Explanation:
A. What are the two best environments to look for fossils? (2 points)
Answer:
Deserts, Beaches and other sandy environments :)
Explanation:
Answer:
It is often found in deserts, beaches, and other sandy environments. Shale is formed from particles of mud. Good places to find fossils are outcrops. An outcrop is a place where old rock is exposed by wind and water erosion and by other people's digging.
Explanation:
hope this helps x
What two objects combine to make endosperm?
A. sperm cell and egg cell
B. sperm cell and polar nuclei
C. sperm cell and embryo
D. sperm cell and pollen tube
Answer:
B. sperm cell and polar nuclei
Explanation:
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