Answer:
Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).
What part of the nervous system is very well protected by bone? (1 point)
A. interneurons
B. sensory neurons
C. peripheral nervous system
D. central nervous system
Will mark brainlest for quick and correct answer
Answer:
The CNS
Explanation:
First, the entire CNS is enclosed in bone. The brain is protected by the skull, while the spinal cord is protected by the vertebra of the spinal column. The brain and spinal cord are both covered with a protective tissue known as meninges.
The nervous system has been the most crucial organ system that acts as the command center. The CNS of the nervous system is very well protected by the bones. Thus, option D is correct.
What is CNS?CNS has been abbreviated for the central nervous system which comprises the spinal cord and the brain. The spinal cord is located at the dorsal surface and the brain is at the anterior location of the body.
The CNS has been enclosed by the skeletal system as the spinal cord is confined inside the vertebral column and the brain inside the skull. They have cerebrospinal fluid that acts as the cushion that protects these structures from shock and injuries.
Therefore, option D. CNS has been the part of the nervous system that is protected by the skeletal system (bones).
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Are Eukaryotic cells the most sophisticated cell?
Answer:
Eukaryotic cells are more complex than prokaryotes, and the DNA is linear and found within a nucleus. Eukaryotic cells boast their own personal "power plants", called mitochondria.
Explanation:
QUESTION 1
You want to start a Word document. Which of the following is the BEST first step?
HELP ME!!
What is cancer?
addition of new cells to replace damaged cells
DNA replication
cellular death
uncontrolled cell division
Answer: uncontrolled cell division
Explanation: uncontrolled cell division forms a cancer turmor which can kill.
Can't use google! Due in 10 minutes! I will mark you the brainliest!
How does identifying ecological hotspots help maintain biodiversity?
Answer:
Look below
Explanation:
A region must meet two strict criteria: must have at least 1,500 vascular plants as endemics, and it must have a high percentage of plant life found nowhere else on the planet. A hotspot is irreriplaceable
Does anyone know the answer to this hypothesis homework in science? I need help with #2 3 and 4
Answer:
2. Independent Variable
3. Dependent Variable
4. We write a hypothesis statement because it is part of the scientific process. Our hypothesis is a statement that supports our claim and can be tested.
Explanation:
Select all possible answers: which of the following are
organelles?
a. centriole
b. ribosomes
c. mitochondria
d. cytoplasm
Answer:
B and c I think
Explanation:
Organelles in animal cells include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles. Ribosomes are organelles in eukaryotic cells.
What are the three components of the cell theory? (If you guys could answer today that would be great) thanks Oh and im pretty sure this is Bio
Answer:
cell theory states that: all living things are composed of one or more cells, the cell is the basic unit of life, and new cells arise from existing cells.
I hope this helps :)
Answer:
1) all living things are composed of one or more cells. 2) cells are the basic unit of life. 3) new cells arise from existing cells
Explanation:
dont worry, cells are 100% a biology question (i literally take "cell biology" as a class in college)
About how long ago did our solar system start to form?
About 5 million years ago
About 14 million years ago
About 5 billion years ago
About 14 billion years ago
Answer:
About 5 billion years ago
Sorry:
Sorry this is so late.
Answer:
C. 5 billion years ago
Explanation:
The real answer is about 4.6 billion years ago but that rounds up to 5 billion years.
Please:
May I please have Brainliest?
It is found that many insecticides - used to kill insects - lose their effectiveness after some years. What could be the cause of this?
A) The insecticides are equally effective - such myths are spread by manufacturers so that they can sell more.
B) The species targeted by the insecticide are destroyed, but new insects which are unaffected, are born.
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
D)The atmosphere contains so much of the insecticide that humans start being poisoned by it.
Answer:
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
Explanation:
It's called adaptation.
Answer:
normally, insecticides last for over 4 to 5 years before breaking into microbes, the species targeted are destroyed. A should be the answer
Please help ASAP!!!!!!
if I remember correctly it should be passive transport
What relationship is shown in the graph? A) Competitive Exclusion Relationship B) Habitat-Niche Relationship C) Biotic-Abiotic Relationship D) Predator-Prey Relationship
Answer:
The answer is Predator-Prey Relationship
Explanation:
Cells come in various shapes and sizes depending upon their function. True or False?
Answer:
true
Explanation:
Answer: true
Explanation: Cells come in various shapes and sizes depending upon their function. ... Cells combine to form organ systems, organ systems combine to form tissue, and tissues combine to form organs. (this is off google so it is copyright.. you might want to summarize)
all the living and nonliving things in a selected area form a (an)?
Answer:
All the living things together in an ecosystem form a community.
Explanation:
For each food listed below choose whether it has it all single carbon to carbon bonds or at least one double carbon to carbon bond
Answer:
Peanut butter
All single carbon-to-carbon bonds
Sunflower oil
At least one double carbon-to-carbon bond
Cheddar cheese
All single carbon-to-carbon bonds
Explanation: I did it on Edge 2020 and it was correct.
In science, evidence =
Ideas
Opinions
Fake news
Numbers
Why does volcanic rock not contain many fossils
well because.. jk i have no idea. good luck though!!!!
Answer:
rocks do not contain any fossils. This is because any fossils in the original rock will have melted when the rock melted to form magma.
Explanation:
Lava
what does an organism trophic level indicate about that organism ?
Answer:
The trophic level of an organism is the position it occupies in a food web. A food chain is a succession of organisms that eat other organisms and may, in turn, be eaten themselves. The trophic level of an organism is the number of steps it is from the start of the chain.
Which is an organic molecule?
C3HNO
CeBr3
CuSO4
CdI2
Answer:
i think its the first one (I'm not sure tho but i will leave the explianation)
Explanation:
Organic molecules are usually composed of carbon atoms in rings or long chains, to which are attached to other atoms of such elements as hydrogen, oxygen, and nitrogen.
(hope its clear )
Answer:
A
Explanation:
Evidence 2 - Unknown Substance Investigation A group of scientists is given a sample of an unknown substance. They are asked to gather evidence to determine whether the substance is living or nonliving. The students take a small sample of the substance and observe it using a microscope. Part A: State and define two properties of life present in the substance that could be observed to indicate whether it is living or nonliving.
Answer:
Water , Oxygen
Explanation:
Explain why
Which provides long-term energy storage?
glycogen, because it is a polysaccharide
glucagon, because it is a complex protein
glucose, because it is a monosaccharide
O cellulose, because it is a complex carbohydrate
Answer:
glycogen
Explanation:
because it is a polysaccharide
Glycogen because it is a polysaccharide which provides long-term energy storage. So, the correct option is A.
What is Glycogen?Glycogen is defined as a multi-branched polysaccharide of glucose that serves as energy storage in animals, fungi and bacteria which is the main storage form of glucose in the human body.
The body mainly uses glycogen stores in the liver to help regulate blood glucose which is sugar levels where the body normally regulates blood glucose mainly with the hormones glucagon and insulin. When the blood sugar level becomes too low, which is called hypoglycemia, the pancreas releases more glucagon.
Thus, Glycogen because it is a polysaccharide which provides long-term energy storage. So, the correct option is A.
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14. Give an example of three adaptations in polar bears. Be sure to
state how each trait is an adaptation.
Answer:
Adaptations
Explanation:
1). "White" fur- Polar bears are well known for this adaptation, white fur. Their fur is actually clear, but gives the appearance of being white. This is so they can blend into their environment.
2). Fur and fat- They have very thick layers of fur and fat, to help keep them warm(insulate them), as their habitat is extremely cold. This prevents things like hypothermia and frostbite.
3). Large feet- Their feet are quite large, which gives them an advantage. It results in more even, spread out weight distribution, and gives them a better grip on the ice.
Here's an extra:
4). Greasy coat- Polar bears are excellent swimmers, and as a result of their swimming habits, they actually have a greasy coat. This grease is much like oils a duck or goose(or other aquatic aviary species) have. It causes water to roll off of them, meaning they're considered hydrophobic.
Which is a nonrenewable resource
Answer:
coal,fossil fuels,nuclear energy i think
Answer:
Coal
Explanation:
Coal is a mineral found in caves so it cannot be made. That is why it is nonrenewable.
What best describes the scientific process?
Answer:
B.
Explanation:
The scientific method follows a series of six steps in which it includes the one from observation to reaching a conclusion.
The statement that best describes the scientific process is that it is a way to answer scientific questions.
What is the scientific process?The scientific process is a method of discovering knowledge about the natural world in the following manner:
making falsifiable predictions (hypotheses). testing them empiricallydeveloping theories that match known data from repeatable physical experimentation.The scientific process involves the following steps:
Asking a questionDoing background researchConstructing a hypothesis. ...Testing of the hypothesis by doing an experimentAnalyzing the data and drawing a conclusionThe aim of the scientific process is to answer a scientific question or proffer solution to a problem.
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Sabella works for an environmental safety group. Her group wants to answer the question "To what lengths must we go to protect plants and animals?" Why is her group's research question flawed?
Answer:
Explanation:
The main reason why the group's research question is flawed is because it steers more towards ethicality than science. It tries to find where the ethical line is and what "humans" are not willing to do even if it means protecting plants and animals. In order to focus on the scientific aspect the question should instead be rephrased as "How must we go about protecting plants and animals?"
Most carbohydrates in the human body are-
A. used as building blocks for proteins
B. used as catalysts for reactions in cells
C. consumed as a source of energy
D. not easily absorbed into the bloodstream
Answer:
C/D
Explanation:
Most of the carbohydrates in the foods you eat are digested and broken down into glucose before entering the bloodstream. Glucose in the blood is taken up into your body's cells and used to produce a fuel molecule called adenosine triphosphate (ATP) through a series of complex processes known as cellular respiration.
(SUMMARIZED ANSWER: One of the primary functions of carbohydrates is to provide your body with energy. Most of the carbohydrates in the foods you eat are digested and broken down into glucose before entering the bloodstream)
Why do you think the flu vaccine is recommended every year?
How does the vaccine affect the immune system?
When is the best time to get a flu vaccine? Why?
Is the vaccine effective?
Who is and who is not recommended to receive a flu vaccine? Why do these recommendations exist?
Why is it important for the CDC to update its flu vaccination recommendations each year?
I'll answer what i can
Answer:
Its recommended because it can help fight the flu if you get it
It affects the immune system by training it to target the flu, and gain resistance to it
The best time is during cold, due to the fact that cold helps the virus (heat kills some viruses)
depending on the person depends on whether its effective or not.
Recommended for taking it, i do not know. Sorry for the missing answer.Its important for the CDC to update it every year because the flu isn't always the same, and can adapt to the shot to where it has no effect.
Answer:
full answer for plato/gradpoint :) its 100% correct it was my answer
Explanation:
Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses. When you get vaccinated, your immune system produces antibodies to protect you from the viruses included in the vaccine. But antibody levels may decline over time — another reason to get a flu shot every year.
Getting a flu vaccine prepares your immune system for the flu. A flu vaccine teaches your immune system to recognize that virus as a threat. While some people may still get the flu after having a flu shot, they'll probably have a milder form of the illness. That's because antibodies made in response to the vaccine can still provide some protection.
The flu virus is around all year, but it spreads more easily from September through the spring, generally peaking between December and February. It takes about 2 weeks to develop enough antibodies from the flu vaccine to protect you against the flu. Protection fades over time, so getting vaccinated before September may leave you more vulnerable toward the end of flu season. You can continue to get the vaccine through late winter to early spring.
How well the flu vaccine works (or its ability to prevent flu illness) can vary from season to season. The vaccine’s effectiveness also can vary depending on who is being vaccinated.
People who can get the flu shot: Different flu shots are approved for people of different ages. Everyone should get a vaccine that is appropriate for their age. There are inactivated influenza vaccines (IIV) that are approved for people as young as 6 months of age. Pregnant women and people with certain chronic health conditions can get a flu shot.
People who should not get the flu shot: Children younger than 6 months of age are too young to get a flu shot. People with severe, life-threatening allergies to flu vaccine or any ingredient in the vaccine. This might include gelatin, antibiotics, or other ingredients.
These recommendations exist for the safety of people having different health conditions.
Every year the flu season is different, and influenza infection can affect people differently, but millions of people get flu every year, hundreds of thousands of people are hospitalized and thousands to tens of thousands of people die from flu-related causes every year. An annual seasonal flu vaccine is the best way to help protect against flu.
Which of the following is essential to proper functioning of all prokaryotic and eukaryotic organisms?
A.) O2
B.) CO2
C.) ATP
D.)NaCI
Answer:
I think its B. CO2
Explanation:
Oxygen is only needed for eukaryotes so not A
ATP is the product of prokaryotes
And I highly doubt its salt
ATP is essential to the proper functioning of all prokaryotic and eukaryotic organisms.
For example, biochemical reactions in mitochondria switch power from fatty acids and pyruvate molecules into a power-wealthy molecule referred to as adenosine triphosphate (ATP). Subsequently, the relaxation of the organelles uses this ATP because of the supply of the power they want to operate.
Each organelle helps one-of-a-kind sports inside. Mitochondria, for example, are organelles that offer eukaryotes a maximum in their power with the aid of using generating power-wealthy molecules referred to as ATP. Prokaryotes lack mitochondria and rather produce their ATP on their floor membrane
What is enzyme synthesis?The feature of ATP synthase is to synthesize ATP from ADP and inorganic phosphate (Pi) withinside the F1 sector. This is viable because of power derived from a gradient of protons which move the internal mitochondrial membrane from the intermembrane area into the matrix via the Fo part of the enzyme.
Hence concluded that ATP is essential to the proper functioning of all prokaryotic and eukaryotic organisms.
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Which of these units are most commonly found/used in science?
feet/inches
pounds/ounces
yards/miles
meters/grams
Answer:
Meters/grams are the most common.
Explanation:
Grams are very exact and meters are also common to use.
Which process occurred when water droplets formed on the grass
Answer:
condensation
Explanation:
because water is collected as droplets on a cold surface when humid air gets in contact with it
Condensation is the process occurred when water droplets formed on the grass because water is collected as droplets on a cold surface when humid air gets in contact with it.
What is condensation?The water droplets forming on inside is condensation.The transformation of airborne water vapor into liquid water is known as the condensation of water. It takes place when water transitions from a gaseous state to a liquid or crystallized state.
When the air is cooled below the dew point, the excess water vapor condenses onto surfaces in the form of water droplets. This is why we may notice water droplets forming on the outside of a cold glass of water on a hot day, or on the inside of a window on a cold day.
At high pressure and low temperature, any gas can condense. As a result, water droplets condense on the interior of a chilly windshield. Water droplets can form inside windows due to a process called condensation.
Therefore, Condensation is the process occurred when water droplets formed on the grass because water is collected as droplets on a cold surface when humid air gets in contact with it.
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