Ms. Lewis is a chemist mixing two solutions together. A chemical reaction takes place, and the solution becomes warm. Which statement best describes what has happened?
Answer:
The reaction was exothermic.
Explanation:
Exothermic reactions turn warm or release heat, thus the reaction in the solution was exothermic.
Answer:
energy has been transformed from one form to another.
What is the difference between between pulmonary artery and pulmonary vein? (I will mark you as brainleist)
The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)
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Two species of sea urchins adapted to live side by side on the sandy bottom of the sea floor. The two species appear to have the same diet—drift seaweeds and other bits of organic matter. They are able to adapt and to live in the same environment without competing with each other. How are they able to share habitat and food resources?
Two species of sea urchins live practically side-by-side in sandy bottoms. The two species appear to have the same diet: drift seaweeds and other bits of organic matter. They can live in the same environment without competing.
As it compels them to live in the same environmental surroundings so the characteristics of living nature also get developed as their current following situation that's helping them to get the same food & habitat.
Both species of sea urchins share the same habitat and food resources by separating their niches a little bit differently from one another.
What do you mean by Habitat?Habitat may be defined as a type of native environment for which a particular species is best adapted due to natural selection.
Competitive exclusion leads to the elimination of any one species until they do not share different niches.
Therefore, both species of sea urchins share the same habitat and food resources by separating their niches a little bit differently from one another.
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Plant hormones are chemical regulators that stimulate or inhibit growth depending on their concentration and type of tissue in which they are found.
Based on the information in the graph, which is a correct conclusion about plant hormones?
F. They stimulate maximum root growth and stem growth at the same concentration.
G. They stimulate maximum stem growth at low concentrations.
H. They stimulate maximum root growth at high concentrations.
J. They stimulate maximum root and stem growth at different concentrations.
Answer and Explanation:
J. They stimulate maximum root and stem growth at different concentrations...
What are all the steps of DNA replication
Answer: Initiation, elongation, and termination. In order to fit within a cell's nucleus, DNA is packed into tightly coiled structures called chromatin, which loosens prior to replication, allowing the cell replication machinery to access the DNA strands
Explanation:
Can someone please help me??
There is an amusement park based on sea life. Its purpose is to get the public interested and caring about conservation of the world’s oceans. Some of the profits from this organization go toward funding ocean research and conservation. In order to get people interested, some of the shows that the park offers include large marine mammals that do tricks. Some of the larger marine animals are housed in pools for viewing instead of being allowed to live in their natural habitat. They also have rare and endangered species on display to help increase awareness of them. They even have a breeding program for the some of the endangered animals.
Describe an ethical concern that would be related to this park.
Answer:
The animals may rely on humans for care instead of doing it themselves
Explanation:
Think about it, if the animals there don't have all the resources they need in a tank instead of the ocean. So they need the workers there to care for them. This can be bad for the animals because if they can go back to the ocean, they won't be able to get the resources they need by themselves!
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Which of the following statements about peer pressure is NOT accurate?
A. Peer pressure is influence from people within the same age group.
B.
Peer pressure can only be negative.
C.
Peer pressure can be active
D
Peer pressure can be passive.
Answer:
B. Peer pressure can only be negative.
Explanation:
Hi! The answer to your question is B because peer pressure is not only negative, it can result in some positive things! Please mark me as brainliest!
I hope that this helps and I hope you have a nice day!
Answer:
I think it's B
Explanation:
You can peer pressure your friend to ask out his crush which can lead to good things.
Use the words, DNA, chromosome, and gene in a sentence.
Answer:
A nucleus is the membrane-bound organelle, and it has the chromosomes, and genes are made up from DNA.
Explanation:
hope this helps have a great day!!! -KindnessMatters-
Explain what natural selection is.
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Answer:
the process when whereby organism better adapted to their tend to survive and produce more offspring
Answer:
The process in which animals adapt to the circumstances of the inhabited environment in order to survive.
Explanation:
In order for animals to survive, they must adapt and find ways to evade potential predators. This is why animals evolve and diverge from there original physical state in order to survive.
pls help me asap for brainlest :)
Answer:
The correct answer would be A
Explanation:
The picture shows the PMAT process Prophase occurs first the chromosomes become visible as paired chromatids and the nuclear envelope disappears.
Then the Metaphase. The way you can remeber that s by looking at the first letter which is M. Stands for Midlle. So you can say the chromososmes are in the middle together. Now Anaphase. The way you can remember that is by looking at A meaning Away. You can think of that as the chromosomes being pulled away from each other moving opposite ways. Now last is Telophase. That when they make two nuclei. When they are divided into 2 there are not nucleus anymore but nuclei.
Hope this helps :)
Which of the following statements best describes what will mostly likely occur to the mouth populations in the image below?
Answer:
a. The light moths will be captured by the predators more easily than the dark moths and the population of dark moths will rise.
Explanation:
The light colored moths are more easily seen by the predators and therefore they are captured by them Dark colored moths are not seen by the predators easily because they disappear in the darkness. The population of dark moth will rise eventually because they are not captured by the predators.
The immune response works much like a team with different players playing their role for a common goal: to rid the body of a pathogen.
Create an analogy that helps explain the roles of the specific and nonspecific responses of the immune system and describe the relationship between the two responses
Answer:
In a primary immune response, naive B cells are stimulated by antigen, become activated, and differentiate into antibody-secreting cells that produce antibodies specific for the eliciting antigen.
A secondary immune response is elicited when the same antigen stimulates memory B cells, leading to the production of greater quantities of specific antibodies that are produced in the primary response
Answer:
In a primary immune response, naïve B cells are stimulated by antigen, become activated, and differentiate into antibody-secreting cells that produce antibodies specific for the eliciting antigen.
A secondary immune response is elicited when the same antigen stimulates memory B cells, leading to the production of greater quantities of specific antibodies that are produced in the primary response.
Please help me and no file
Is it accurate to say that
having the BRCA-1 gene gives someone cancer? Explain your thinking.
Answer:
On average, women with an altered BRCA1 gene have a 50 to 85 percent risk of developing breast cancer by age 70. Their risk of developing ovarian cancer is 40 to 60 percent by age 85. A woman with cancer in one breast has a higher risk of developing cancer in the other breast.
A high population of greater prairie chickens once inhabited the prairies of Illinois. The conversion of the prairies into agricultural land caused the chickens to lose their habitat. Studies have concluded that this change greatly reduced the greater prairie chicken population. The habitat loss also resulted in a decrease in the population's genetic variation.
Answer:
The answer is C. genetic drift
Explanation:
plz give brianliest
Answer:
C. Genetic Drift
Explanation:
DIFFERENT BREEED!!
In many mammals, a developing embryo is nourished through the ____, ____ is a connection with the mother. Later, a newborn takes in food produced by the ____ of the mother. Unlike a young mammal, an insect or amphibian undergoes ____ which is a series of dramatic changes in body shape and form.
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Answer:
In many mammals, a developing embryo is nourished through the placenta. ____ is a connection with the mother. Later, a newborn takes in food produced by the blood artilleries of the mother. Unlike a young mammal, an insect or amphibian undergoes metamorphosis which is a series of dramatic changes in body shape and form.
In many mammals, the placenta, which connects the mother and the embryo, provides nutrition to the growing embryo. Oxygen and nutrients can be exchanged between the mother and foetus thanks to the placenta.
What is the mode of nourishment of an infant ?The infant then consumes nourishment made by the mother's milk. This milk, which the mother's mammary glands make, is nutrient- and antibody-rich and aids the infant's growth and development.
An insect or an amphibian goes through metamorphosis, which is a sequence of significant changes in body structure and form, unlike a newborn mammal. The insect or amphibian completely changes during metamorphosis from a larva or tadpole to an adult form the rearrangement of tissues and cells.
The bug or amphibian's adult form can reproduce and is adapted to its environment. Hormones are what cause this metamorphosis, and it requires.
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what controls the passage of materials into and out of a cell
Answer:
The cell membrane.
Explanation:
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Which of the following is a problem caused by acid rain?
is responsible for smog
damages limestone and marble on statues and buildings
is a CFC that causes destruction of ozone
can cause burning sensation in the eyes and respiratory problems
Answer:
It damages limestone and marble on buildings and statutes.
Can cause burning sensation in the eyes and respiratory problems.
Explanation:
Which of the following is the newest and most accurate form of evidence for common ancestry
DNA molecular
Fossils
What is significant drawback to transferring electricity produced by solar where sunshine is abundant to states where it is not
Answer:
The transfer could only occur during the day because it cannot store solar energy.
Explanation:
The transfer of electricity produced from solar energy only occurs during the day because it cannot store solar energy at a tremendous level. At homes, we can easily store the electricity made from solar energy with the help of batteries but for providing electricity to a state where thousands of houses are present, enormous batteries are needed to store it which can't be made because of very high cost so that's why the solar energy can not be stored.
Which of these allows you to distinguish between scents?
a- chemoreceptors on the tongue
b- chemoreceptors in the nose
c- photoreceptors in the eye
d- mechanoreceptors in the ear
Answer:
B) chemoreceptors in the nose
Explanation:
Chemo receptors in the nose helps to distinguish between scents where the smell can be differentiated from each other by chemo receptors. The correct answer is option B.
What helps in taste in tongue ?Tongue helps in the tasting via the help of taste buds which are recognized and interpretation of various taste.
The nasal cavity of nose is made up of many chemo receptors where the names of the receptors are :
olfactory
vomeronasal
and trigeminal systems.
The presence of chemoreceptors in the nasal cavity is in the anterior respiratory epithelium of the nasal cavity.
Olfactory receptors that are abstractly found in the nasal cavity that is responsible for the interpretation of smell. It is the protein that is capable of binding to the odour molecules.
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Which statement about the immune system is false?
A.White blood cells are made in lymph nodes.
B.Lymphocytes reduce inflammation.
C.B cells remember specific pathogens.
D.Most white blood cells kill bacteria
Answer:
B- Lymphocytes reduce inflammation, I think
The reproductive cycle shown above involves a virus infecting a cell, replicating the genetic material, building a new capsid and then destroying the cell. This reproductive cycle is called.
a. Lytic Cycle
b. Infection Cycle
c. Duplication
d. Lysogenic Cycle
Answer:
A. Lytic Cycle
Explanation:
The lytic cycle and lysogenic cycle are reproductive cycles that viruses use. The image attached shows the difference.
11. What are cell cycle regulators?
Answer:
A conserved set of cyclin-dependent protein kinases (Cdks) initiate or regulate events through phosphorylation of intracellular proteins, thus controlling cell cycle progression, terminal differentiation, and apoptosis. ...
Explanation:
The cell cycle regulators are cyclins, CDKs, and CDK inhibitors as well as some of their substrates, interaction partners, and upstream regulators.
What is a cell?
The smallest unit of life is a cell. There are biomolecules in it. Every living thing is composed of several cell units. Different sorts of creatures contain various types of cells.
Prokaryotic cells are the most basic types of cells; they are only seen in unicellular organisms, do not engage in cell division, and lack real cell organelles and a nucleus, instead having DNA coiling up in the cytoplasm.
Eukaryotic cells are higher cells that contain cell organelles and have the capacity to carry out a variety of intricate tasks required by big organisms.
Thus, Cell signaling is a method of communication between or within cells, and a change in a cell's activity is conveyed as a signal that may set off a chain of events so that the body can respond appropriately.
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Write a paragraph (at least 5 complete sentences) about the positive experiences during your Spring Break 2021.
Can you relate any of your time well spent to science?
Try to use two of these words in your paragraph:
Allele
Antibody
Artery
Bacteria
Bronchus
Cell Cycle
Cell Membrane
Chromosomes
Cytoplasm
DNA
Enzyme
Esophagus
Evolution
Fossil
Genotype
Homeostasis
Independent Variable
Kidney
Larynx
Mitosis
Nucleus
Answer:
your gonna have to use your own resources (memory etc.) to tell about your spring break... think about anything you saw or did or whatever including these terms:)
Only eukaryotic cells are capable of photosynthesis, because photosynthesis requires chloroplasts.
true
false
Fungi produce spores in structures called fruiting bodies.
•True
•False
Answer:
True hope it helped :)
Explanation:
Explain the negative impact of human activity on the environment. Be sure to consider:
pollution by agricultural practices such as use of chemical fertilizers;
products of industrialization and improper garbage disposal;
impact on eco-tourism;
loss of habitat, species;
impact on human health.
Answer:The negitive impact on the envirement that is caused by humans is due to human expansion, reproduction, war and economics
Explanation: As humans explore they need to settle in new areas and find a way to settle down and reproduce to create a settlement and a home for the colonie, but in doing so there taking resources and land that where habibtats are now destroyed.
Which results from the interaction of solar weather on Earth's magnetic field? Select the two correct answers.
A. geomagnetic storms
B. auroras
C. radiation belts
D. solar wind
Answer:
A & C
Explanation:
In short terms, A & C are the only answers that have anything to do with the magnetic field. Solar wind is part of solar weather, and is involved in the creation of the other three answers. Auroras are formed through the interaction of solar wind and the oxygen & nitrogen in Earth's atmosphere.
The geomagnetic storms and auroras are the results from the interaction of solar weather on Earth's magnetic field. The correct options are A and B.
What are solar weathers?Solar or space weather refers to actions that take place on the Sun's surface.
These reactions usually have different effects on our planet, owing primarily to the Earth's magnetic field, which acts as a shield for the planet.
A geomagnetic storm happens when the solar radiation collides with the Earth's electromagnetic field, causing disruptions in the magnetosphere.
The interaction of loaded solar particles and the land based electromagnetic field produces an aurora, which is a luminescent formation.
The solar wind transports these particles to the terrestrial electromagnetic field, in which they are shown in various colors depending on the type of particle.
Thus, the correct options are A and B.
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Matching chromosomes are called _____________________________________ pairs.
Answer:
homologous
Explanation:
Answer:
Homologous
Explanation:
Which of the following chemical equations is balanced?
A. Al + CuCl2 AIC13+ Cu
B. 2Al + 3CuCl2 - 2AlCl3+ 3CU
C.3Al + 2CuCl2 — 3AlCl3+ 2Cu
D. 4Al + 3CuCl2 -4AlCl3+ 3CU