Answer:Four characteristics define cardiac muscle tissue cells: they are involuntary and intrinsically controlled, striated, branched, and single nucleated.
Explanation:on
What are some negative impacts of having this life cycle that might have contributed to a decline in the dragonfly population?
Answer:
Dragonflies are important for our environment.
Explanation:
Dragon flies belongs to the ancient family of insects. They are found on every parts of the world and have been from around 300 millions years ago. There are more than 5000 different species of them found in different parts of the world. Conserving dragonflies is important as they considered as a valuable environmental indicators.
Dragon flies are found in the areas where water is available and near grasslands. Their life cycle is an example of an incomplete metamorphosis. The dragon flies lays their eggs near the water or in the water. Dragon flies spends most of the life time as a nymph in the water where they turn into an adult and leave the water. The dragon flies rely on the aquatic ecosystems all through their life. Thus dragonflies are an important indicators of the environment and water quality.
Most of the life cycle of the dragon flies depend on the availability of water and its quality. Polluting water and destroying their habitat will result in the decline of the population of the dragon flies.
where does transcription take place in eukaryotic cells
Answer:
Transcription occurs the nucleus of eukaryotic cells
answer all 3 please
Answer: 1. Earthquake
2. Lava
3. Divergent Boundary
Explanation:
ill give brainly pls answer asap
Which will cool down faster overnight, the water in the pool or the air above the pool? How do you know
Please help
State the function of Bowman's capsule and glomerulus.
➜ Bowman's capsule and glomerulus have semipermeable walls.
The glomerulus, is a tuft of capillaries contained in Bowman's capsule.The water and dissolved substances (wastes and useful) are filtered into the Bowman's capsule and from here they are filtered into the tubule.Thus, both the structures act as filtering apparatus.Which of the following increases transpiration?
A air around the leaf with high humidity.
B air molecules around the leaf with kess kinetic energy.
C an obsence of light falling on the leaf.
D water molecules in the leaf with more kinetic energy.
Please HURRY I need the answer
Answer:
Answer is: D
Explanation:
Please help me and no file
Explain IN YOUR OWN WORDS why cancer drugs "turn a cancer's weakness against itself."
Answer:
There are several possible reasons for chemotherapy resistance: Some of the cells that are not killed by the chemotherapy mutate (change) and become resistant to the drug. Once they multiply, there may be more resistant cells than cells that are sensitive to the chemotherapy. Gene amplification.
What's the answer please?
Answer:
C
Explanation:
They can be the same or different because if they are the same the genotype will be TT (normal) or tt (Bent), if they are different then the genotype will be Tt (only normal)
Q. What are peristaltic movements ?
➜ The contraction and expansion movements of the walls of food pipe are called peristaltic movements.
This movement pushes the food in forward direction in the alimentary canal.Anyone know this? Not sure if my answer is right
Answer:
I'm sure you right.
C.) Photosynthesis.Explanation:
I checked the chemical equation as well as the diagram, and it looks accurate.
The chemical equation for photosynthesis is:
6CO2+6H2O → C6H12O6+6O2.
So your answer is correct.
In plants, photosynthesis is used to convert light energy from sunlight into chemical energy (glucose).
Carbon dioxide, water, and light are used to make glucose and oxygen.
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Good luck foe.
Lb
HELLLPPPPPPP MEEEEEE PLZZZZZZZ HURRYYYY!!!!!!!!
What is a climax community?
A.When succession is complete and biodiverse sustainability has been reached.
B.When limiting factors and interactions of organisms create balance within a community.
C.When the maximum capacity of organisms is reached within a community.
D.All of the above are correct.
Answer:
B. When limiting factors and interactions of organisms create balance within a community.
Are all molecules compounds? Why or why not?
Answer:
While all compounds are molecules, not all molecules are compounds. A molecule is formed when two or more atoms of an element chemically join together.
Explanation:
Take a subject of origins or a question you have and write a minimum of 500 words as a research project. Be sure to list all references and resources as part of your bibliography. Other information can be found at a library or other reference source. (It has to be the creation theory because I go to a christian school.)
Answer:
Life on Earth began more than 3 billion years ago, evolving from the most basic of microbes into a dazzling array of complexity over time. But how did the first organisms on the only known home to life in the universe develop from the primordial soup? One theory involved a "shocking" start. Another idea is utterly chilling. And one theory is out of this world! Inside you'll learn just how mysterious this all is, as we reveal the different scientific theories on the origins of life on Earth.Electric sparks can generate amino acids and sugars from an atmosphere loaded with water, methane, ammonia and hydrogen, as was shown in the famous Miller-Urey experiment reported in 1953, suggesting that lightning might have helped create the key building blocks of life on Earth in its early days. Over millions of years, larger and more complex molecules could form. Although research since then has revealed the early atmosphere of Earth was actually hydrogen-poor, scientists have suggested that volcanic clouds in the early atmosphere might have held methane, ammonia and hydrogen and been filled with lightning as well. The first molecules of life might have met on clay, according to an idea elaborated by organic chemist Alexander Graham Cairns-Smith at the University of Glasgow in Scotland. These surfaces might not only have concentrated these organic compounds together, but also helped organize them into patterns much like our genes do now. The main role of DNA is to store information on how other molecules should be arranged. Genetic sequences in DNA are essentially instructions on how amino acids should be arranged in proteins. Cairns-Smith suggests that mineral crystals in clay could have arranged organic molecules into organized patterns. After a while, organic molecules took over this job and organized themselves.
Explanation:
Jayden wants to model the hydrological cycle. He puts some water in a small plastic cup, draws a line on the cup at the water level, and places the cup upright on a window sill. After three days of being undisturbed, the amount of water in the cup is below the line Jayden drew. This is an example of:
A. Transpiration
B. Evaporation
C. Condensation
D. Precipitation
Which is the best example of a response to an external stimulus?
A. drinking water after a long run
B. avoiding the sun by looking for food at night
C. a hungry bear hunting for food
D. falling asleep in the treetops of a forest
will mark brainiest
Answer:
B
Explanation:
I'm not 100% sure.... but that one is the only choice I would pick
Answer:
A
Explanation:
Define light reaction.
Define dark reaction.
I am in search of perfect answer, otherwise i'll report it.
➜ A chemical reaction which take place only in the presence of light, is called light reaction or light dependent reaction.
• It takes place in grana of chloroplast.
➜ A chemical reaction which can take place even in the absence of light, is called dark reaction or light independent reaction.
• It takes place in stroma of chloroplast.
When a car slams on breaks, a book in the seat of the car slides forward. What terms describes why that happens?
Answer: Newton's first law which states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
anyone really good at biology can solve biology question
Answer:
Depends what kind of biology or question it is?
Explanation:
Explain what you need help with and possibly I can!!
Hope all is well, have a wonderful day! <33
The bacterial DNA can be found in the
The bacterial DNA can be found in the cytoplasm.
Hope this helps
Number 6 please answer
___________________________________________________________
Crab Rave
___________________________________________________________
Answer:
the answer is A.
Explanation:
Ive taken this test before like last week so y E a h
Which neurotransmitters are used for each division of the autonomic nervous system? Be sure to describe the synapse at the autonomic ganglion and at the effector. What component of the system determines if a given neurotransmitter has an excitatory or inhibitory effect on the target effector?
Answer:
The autonomic nervous system is in charge of controlling visceral effectors. Traditionally, it is described by its peripheral nervous components (ganglia, nerves and plexuses) and two divisions are distinguished: the sympathetic and the parasympathetic. Transmission of the excitatory stimulus through the synaptic cleft occurs by release of neurotransmitters; the neurotransmitters of the sympathetic and parasympathetic nervous system are mainly norepinephrine (NA) and acetylcholine (AC). The NA-secreting fibers are called adrenergic and those that secrete AC, cholinergic. All preganglionic neurons, both those of the sympathetic nervous system and those of the parasympathetic nervous system, are cholinergic. The neuron that releases the neurotransmitter is called a presynaptic neuron. The signal receptor neuron is called a postsynaptic neuron. Depending on the type of neurotransmitter released, postsynaptic neurons are either stimulated (excited) or de-stimulated (inhibited).
Explanation:
The autonomic nervous system is the part of the central and peripheral nervous system that is responsible for the regulation of the involuntary functions of the organism, the maintenance of internal homeostasis and the adaptive responses to variations in the external and internal environment and two divisions are distinguished: the sympathetic and the parasympathetic. Acetylcholine is the preganglionic neurotransmitter of both divisions of the S.N.A. (sympathetic and parasympathetic) and also of the postganglionic neurons of the parasympathetic. The nerves at whose endings acetylcholine are released are called cholinergic. Norepinephrine is the neurotransmitter of postganglionic sympathetic neurons. The nerves into which norepinephrine is released are called adrenergic. Within the efferent sympathetic impulses, the postganglionic neurons that innervate the eccrine sweat glands and some blood vessels that supply the skeletal muscles are of the cholinergic type. Both acetylcholine and norepinephrine act on the different organs to produce the corresponding parasympathetic or sympathetic effects. The peripheral nerve endings of the sympathetic form a reticulum or plexus from which the terminal fibers come in contact with the effector cells. All the norepinephrine in peripheral tissues is found in the sympathetic endings in which it accumulates in subcellular particles analogous to the chromaffin granulations of the adrenal medulla. The release of norepinephrine at nerve endings occurs in response to action potentials that travel through nerve endings. The receptor, when stimulated by catecholamines, sets in motion a series of membrane changes that are followed by a cascade of intracellular phenomena that culminate in a measurable response. There are two classes of adrenergic receptors known as alpha and beta. These two classes are again subdivided into others that have different functions and that can be stimulated or blocked separately. Norepinephrine primarily excites alpha receptors and beta receptors to a small extent. The neurotransmitter acetylcholine is synthesized at the axonal terminal and deposited in synaptic vesicles. Acetylcholine activates two different types of receptors, called muscarinic and nicotinic receptors. Acetylcholine (AC) synthesis takes place at presynaptic termination by acetylation of choline with acetyl-coenzyme A, a reaction catalyzed by acetylcholinetransferase. The energy required for the release of a neurotransmitter is generated in the mitochondria of the presynaptic terminal. Binding of neurotransmitters to postsynaptic membrane receptors produces changes in membrane permeability. The nature of the neurotransmitter and the receptor molecule determines whether the effect produced will be one of excitation or inhibition of the postsynaptic neuron.
Does anyone have the file for a biology lab. The lab is...
Lab: Blood Typing
Assignment: Lab Report
The name of the class is Biology B-IC
Answer:
are those the answer choice?
Explanation:
By favoring some alleles over others, natural selection can lead to survival advantages for some organisms. Which of the following is NOT an adaptation as a result of natural selection?
a
A certain snake species has many members of various colors.
b
A moth's wing markings help it blend into the forest habitat.
c
A bird that dives into water to hunt fish has webbed feet.
d
A bird has a certain beak size that allows it to eat seeds of various sizes.
Answer:
The Answer is A
Explanation:
The one that provides short term energy and structure to the body ____________________
Answer: ATP—Adenosine triphosphate,
Answer:
Adenosine triphosphate,
Explanation:
Hope this help
In cherry tomatoes, red color (R) is dominant to yellow color (r). If two heterozygous plants are crossed, what percentage of the offspring will be yellow?
Answer:
50
Explanation:
If you cross two heterozygous tomato plants, you get four base genotypes of (Respectively,) RR, Rr, Rr, and rr. That makes your percentage A. 50%.
Explain h0mozygous and heter0zygous?If a dominant red fruit (RR) plant is crossed with a recessive over yellow fruit (rr), then the phenotype will be red fruit and the genotype Rr. It is a case of complete dominance.
In diploid organisms (2n), an individual is homo-zygous when it carries two copies of the same gene variant (i.e., the same allele).
Moreover, an individual is heter0zygous when it carries two different alleles for the same gene locus.
In complete dominance, the dominant allele completely masks the expression of the recessive allele in heter0zygous individuals.
Thus, That makes your percentage A. 50%.
To learn more about heterozygous plants click here:
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A student is shown a slide of cells from a species of a producer
in a food web. The student observes that the cells have
chloroplasts. What conclusion about the food web is best
supported by these findings?
o
A. The producers capture energy from sunlight.
B. The food web contains many herbivores and omnivores.
C. The food web is found in a terrestrial ecosystem.
D. The producers in the web are single-celled organisms.
Answer:
the producers capture energy from sunlight
True or fasle? Cells have to divide when becoming too large so that the cell can
maintain homeostasis.
Answer:
True
Explanation:
The cell has to dividewhen it comes to large, because the cell wall is not big enoughtpo maintain all inside the cell when to large.
Which is the best example of a response to an external stimulus?
drinking water after a long run
avoiding the sun by looking for food at night
a hungry bear hunting for food
falling asleep in the treetops of a forest
Answer:
its a or b most likely a tho
Explanation:
Answer: B
Explanation: