Based on the function of the blood-brain barrier, the substances that can pass through the blood-brain barrier are some anesthetics and all hormones.
What is the blood-brain barrier?The blood-brain barrier is a network of blood vessels and tissues which selectively allow the movement of certain substances in blood into the brain bit not others which are harmful to the brain.
Some of the substances that can pass through the blood-brain barrier include:
water,oxygen,carbon dioxide, andsome anestheticshormonesTherefore, from the given options, the substances that can pass through the blood-brain barrier are some anesthetics and all hormones.
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What does the information in DNA molecules provide instructions for?
a. Assembling amino acids into protein molecules
b. Assembling protein molecules into amino acids
c. Rearranging genes into protein molecules
d. Rearranging genes into traits
Answer: (B)
Explanation: DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.
Question 35
1 pts
s
What is the main difference between natural selection and
selective breeding? in selective breeding
humans allow nature to control the reproduction of species
humans choose plants or animals for reproduction
the strongest will survive and have more offspring
the organisms with the most genetic variation will reproduce
Answer:
humans choose plants or animals for reproduction
Explanation:
This can be seen in the farming industry with livestock and crops alike. Crops are usually chosen for a genetic resilience (like to arid, dry areas) and are reproduced with intervention from humans. This doesn't happen in the wild, therefore it is natural vs the unnatural and purposeful human intervention.
Select the Nuclear membrane closeup. How is the nuclear membrane similar to the cell membrane? Select the Nuclear membrane closeup. How is the nuclear membrane similar to the cell membrane?
Answer:
A nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm.
The similarities between nuclear membrane and cell membrane are both are made up of lipid bilayers, main functions of both membranes are protection and transportation, both are extremely important for the cell survival.
What is nuclear membrane?"The nuclear membrane is a double layer that encloses the cell's nucleus, where the chromosomes reside."
What is the other function of nuclear membrane?"The critical function of the nuclear membrane is to act as a barrier that separates the contents of the nucleus from the cytoplasm."
What is cell membrane?"The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment."
What are the other functions of cell membrane?The other functions of the cell membrane include
identification,communication,regulation of solute exchange through the membrane,isolation of the cytoplasm from the external environment.What is lipid bilayers?"The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules."
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What evidence would help us determine whether hydroponic plant food, air, or water could be involved in a chemical reaction to make food molecules?
Answer:
We use a hydroponic plant system and indicators of food molecules to investigate whether soil, plant food, water, or air.
HOPE IT HELPS, BE SAFE :3
What do we call the tiny openings in a
leaf that allow things in and out of the
leaf?
A. chlorophyll
B. Stomata
C. veins
D. blades
Information from the taste buds travels to an area of the.
Information from the taste buds travels to an area of the frontal and temporal lobes of the brain.
What are taste buds?Taste buds are present in the tongue. They are responsible for the taste of whatever we eat. Taste buds are of different types. Like bitter, sweet, salt, and sour. They are different taste buds and are present in the different regions of the tongue.
The frontal and temporal lobe of the brain is responsible for the taste of food and other things. The frontal lobe is present in the frontal part of the brain, and the temporal lobe is on the side of the brain above the ears.
Different lobes of the brain are responsible for different works of the body.
Therefore, the frontal and temporal lobes of the brain get information from the tongue.
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Why is it necessary to have positive and negative controls in this experiment?
Answer:
It is necessary to have positive and negative controls in an experiment to ensure that the results are due to the independent variable.
Explanation:
I hope it will help you
etermine the amount of rock left for the following isotopes:
a) Carbon-14 has a half life of 5,730 years. A fossil sample taken from the Earth shows that
a sample that started with 850 g of C-14 now has 53.125 g. How old must this organism
be?
Please help I don’t understand
Based on the chart provided:
Deficiency of vitamin A causes Night blindnessDeficiency of vitamin C causes scurvy.Cereal Z is recommended for the children because of its high vitamin D content. 2 servings of cereal Y is required. What are vitamins?Vitamins are organic food substances required by man man and other animals only in small amounts for normal growth and healthy development.
The main vitamins are vitamins A , B, C, D, E and K.
Deficiency of vitamin A causes Night blindness
Deficiency of vitamin C causes scurvy.
Vitamin D is required for strong bones and teeth.
Cereal Z is recommended for the children because of its high vitamin D content.
From the chart, cereal Y contains 4 mg of vitamin B.
Since, the recommended daily allowance of vitamin B is 8 mg
Cereal Y contains 4 mg of vitamin B.
8/4 servings of cereal Y is required.
Therefore, 2 servings of cereal Y is required.
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A farmer has grown strawberries successfully for years in field A. He recently expanded the crop into previously unused land in fields B and
C. The yield from field B is comparable to A, but the yield from field C is inexplicably low. As a microbiome expert, what might you predict
about the soil of fields A, B, and C?
Given what we know, we can confirm that the soil in field C most likely lacks the presence of microbes that help plants grow or has a higher presence of microbes that are harmful to plant growth.
What does it mean for a microbe to promote plant growth?This would mean that the microbe in question has a symbiotic relationship with plants. Meaning that it promotes plant growth in exchange for nutrients from the plant, and both organisms will benefit, similar to microbes such as AM fungi.
Therefore, we can confirm that the soil in field C is likely to lack plant symbiotic microbes that are most likely found in fields A and B.
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Which spheres attract each other with the least amount of gravitational force
Answer:
Mercury
Explanation:
Assuming that you are standing on the surface of the planet, Mercury, with a mass of 3.285 × 10^23 kg, has the lowest gravity. The radius of an object has no affect on the gravity.
Provide examples of biotic and abiotic factors that affect an organism's range.
Answer:
water air soil sunlight and minerals
Explanation:
The biodiversity and distribution of organisms within an ecosystem is due to both abiotic (non-living) and biotic (living) factors.
A person starts to eat a hamburger. As she takes a bite and chews, an enzyme called salivary lipase helps to begin the process of fat digestion. Which of these is the BEST description of the role of enzymes in digestion?
Answer:
Role of enzymes in the human body
Explanation:
The chemical reactions that keep us alive - our metabolism - rely on the work that digestive enzymes do. They help to accelerate (catalyze) chemical reactions in the human body.
In some cases, they can cause a chemical reaction millions of times faster than they would without them.
Important functions of enzymes:
Digestive enzymes help the body break down larger complex molecules into smaller ones such as glucose, so it uses them as fuel.
Every cell in our body contains DNA. Each time the cell divides, this DNA must be copied. The process is called DNA replication . Enzymes help in this process by developing the DNA helix and copying the information.
Liver enzymes break down toxins in the body.
Enzymes are especially needed for respiration, digestion, muscle and nerve function, among other important roles.
Answer:
C. Enzymes are proteins that speed up the process of chemcially breaking down food molcules.
Explanation:
i need an answer quick please
Scientists predict that a 1.5 to 2.5 degree Celsius rise in global temperatures could put __________% of the world's plants and animals at an increased risk of extinction.
Answer:
20-30
Explanation:
What are some characteristics of flowers that could attract the animals
that pollinate them?
Answer:
Many flowers use visual cues to attract pollinators: showy petals and sepals, nectar guides, shape, size, and colour. I personally think it is very cool how they know what to do to attract pollinators.
Explanation:
brainliest plz?
When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of.
Answer:
hope it helps
Explanation:
density dependent inhibition
do both animal and plant cells have mitochondria ?
mitochondria are present in both plants and animals which provides energy for respiration and metabolism.
Answer:
Yh both animals and plant cells have mitochondria
Explanation:
State the trophic level of each of the following: cow: ______________________ grass: _____________________ man: ______________________ mushroom: __________________
Answer:
The cow is a Primary Consumer since it feeds off the Grass.
The grass is a Producer since it's an autotroph (Can make its food through Photo synthesies. )
The Mushroom is a decomposer since it's a fungus.
And lastly, the man would be a Tertiary consumer since most of us are omnivores.
Summarize the steps of glycolysis using the key terms ATP, ADP, NAD+, NADH, glucose, and pyruvate.
Explanation:
LOOK AT THE FLOW CHART
IT MIGHT HELP U OUT
In this question we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.
Steps of glycolysis1st stage
This step, also known as the preparatory phase or investment phase, consists of five reactions:
1. Phosphorylation of the glucose molecule occurs, in which it receives phosphate from the ATP molecule, forming glucose 6-phosphate;
2. The glucose 6-phosphate molecule undergoes a rearrangement and forms fructose 6-phosphate;
3. Another ATP molecule supplies phosphate to the fructose 6-phosphate molecule, giving rise to fructose 1,6-diphosphate;
4. The fructose 1, 6-diphosphate molecule undergoes a rearrangement, with the opening of its benzene ring, giving rise to two molecules with three carbons each: glyceraldehyde 3-phosphate and dihydroaxethone phosphate;
5. The dihydroaxethone molecule undergoes a rearrangement giving rise to another glyceraldehyde 3-phosphate molecule.
It can be seen that at the end of this first phase, there was only energy expenditure, with the conversion of two ATP molecules into ADP.
→ 2nd stage
This stage, also known as the profit or energy compensation stage, involves energy gain and also consists of five stages, described below:
6. Two molecules of NAD+ (nicotinamide dinucleotide and adenine) are reduced to two molecules of NADH with electrons from the oxidation of glyceraldehyde 3-phosphate to 1,3-diphosphoglycerate;
7. Each molecule of 1,3 – diphosphoglycerate yields a phosphate to one molecule of ADP, thus giving rise to two molecules of ATP and two molecules of 3 – phosphoglycerate;
8. A rearrangement of 3 – phosphoglycerate molecules occurs, forming 2 – phosphoglycerate;
9. The 2 – phosphoglycerate molecules lose a H2O molecule, giving rise to phosphoenolpyruvate;
10. Phosphoenolpyruvate molecules provide a phosphate to an ADP molecule, yielding two ATP and two pyruvate molecules.
With this information, we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.
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Which types of dietary fats can increase blood ldl concentrations ?.
Answer:
saturated and trans fat can increase blood concentration
Which of these is an advantage of factory farming?
A. Less efficient operation than family farms
B. More job opportunities than family farms
O C. Smaller profit margin than family farms
D. More expensive products than family farms
Please help!
1) Scientists who studied wildlife in and around the Great Lakes area found their results to be disturbing. A large number of birds were born with partially developed eyes, crossed bills and webbed feet. What can you infer is the reason?
Group of answer choices
Deforestation.
Contaminated sediments infiltrated the water.
Other birds migrated to the area and were crossbred.
An invasive plant species was introduced into the area.
2) Eli wants to reduce his impact on the environment. Which activity should Eli do to help the environment and his community?
Group of answer choices
increase the amount of water he uses
reduce the amount of walking he does
increase the amount of food he consumes
reduce the amount of electricity he uses
1)contaminated sediments infiltrated the water 2)reduce the amount of electricity he uses
How does the scientific method attempt to reduce observer bias when explaining natural phenomena?
Explanation:
The scientific method is focused on experiments to prove/disprove a hypothesis.
A number of experiments start with a question;example/ what caused mold to grow on human skin?
this is when u organize a "control group,"
( recieving a placebo, or told information they have to follow).
your second group, gets a medication or a scenario to prove the hypothesis is true or false.
once both sides document their findings, scientists discuss which one is true..
Which protists can reproduce s3xually?
A. volvox and amoeba
B. euglena and amoeba
C. volvox and paramecium
D. euglena and paramecium
NEED THE ANSWER ASAP
Answer:
amoeba and eulgene is the answer
What happens if one part of an ecosystem is damaged?.
Answer:
probably the trees would die then we wouldn't have anything to breathe in
Mangrove pneumatophore roots _______. A. Prop the trees up above the water line b. Excrete excess salt c. Absorb carbon dioxide from the air d. None of the above Please select the best answer from the choices provided A B C D.
Mangrove pneumatophore roots absorb carbon dioxide from the air.
WHAT ARE PNEUMATOPHORES?Pneumatophores, also called breathing roots, are types of roots possessed by mangrove plants.
Mangrove plants are adapted to swampy conditions, hence, must possess adaptational features that ensures their survival.
Pneumatophores help the mangrove plants to exchange gases like carbon dioxide and oxygen in the atmosphere.
Therefore, mangrove pneumatophore roots absorb carbon dioxide from the air.
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Answer:
Its B
Explanation:
Just took test any nobody on here is right so i picked d and that not it so its b
What do the polar bears, reindeer, and shrubs that live in a single area make up? organism population community ecosystem.
Answer:
Ecosystem
Explanation:
It would be a ecosystem because the animals live together to make a liveable enviornment like a food chain. And all the organisms can sustain itself.
Answer:
ecosystem
Explanation:
The testes and ovaries both release the hormone testosterone. Please select the best answer from the choices provided T F.
Testosterone is a hormone that regulates puberty, function and the development of the male and female organs. The testes and ovaries both release the hormone testosterone.
What is the role of testosterone?In males, the Leydig cells of the testis and in females, the ovaries produces and releases the hormone testosterone. Also, some amount of the hormone is released by the adrenal gland.
It is major reproductive growth, functioning and stimulating hormone that is also responsible for the physical development of the organism during puberty.
Males have high levels of this hormone as females as they are essential for sperm development and some male physical characteristics.
Therefore, the statement is true.
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Abiotic factors in an ecosystem might include one or more of the following: Question 4 options: Slug, ants, coyote, birds, armadillo, trees, grass, flowers and moss Air, water, soil, rocks, and fish Air, water, soil, and rocks Slug, ants, coyote, birds, and armadillo.
Answer:
abiotic basically means non-living organisms. therefore the answers are: air, water, soil & rocks
:)