Answer:
D
Explanation:
Germination takes place
A student is examining the liquid mercury inside a thermometer. If the liquid is composed of only mercury atoms, what can the student conclude?
A :the liquid is an impure substance because it is in a liquid state.
The liquid is a pure substance because it is made up of elements
The liquid is an impure substance because it is inside a thermometer.
The liquid is a pure substance because it is made up of mixtures.
Answer:
b
Explanation:
DID IT
Mercury is used in thermometers to estimate temperatures. Liquid mercury composed of Hg atoms is a pure substance that consists of single elements. Thus, option B is correct.
What are pure substances?Pure substances are chemicals that are matter and have been known to have distinct chemical properties because of their constant and definite composition. The physical methods of separation can not be used to separate the pure substances.
The liquid mercury is a pure substance as it has been composed of only one type of elemental atom Hg. All of its composition has been carrying the Hg atoms uniformly that possess and exhibit the same chemical and physical characteristics.
Therefore, option B. the liquid mercury is a pure substance as it is made of the same type of element.
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i need help with this asapp
As the average kinetic energy of the particles in a gas increases, which of the following
occurs? (1 point)
The temperature of the gas increases.
The temperature of the gas decreases.
The number of particles increases.
The number of particles decreases.
Answer:
Amontons’s law. If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. If the volume is held constant, the increased speed of the gas molecules results in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure
Can some one help me plzzzzzz
Answer:
you are correct it is it relieves energy from mitochondria
During cellular respiration what is the direct source of the energu used in the cells of consumers?
Answer:
Consumers use chemical energy from the chemical bonds within organic molecules such as carbohydrates, lipids, and amino acids.
Explanation:
Heterotrophs are consumers; they ingest or absorb organic matter (lipids, carbohydrates, proteins, etc.) made by autotrophs or producers for their energy consumption. Autotrophs include plants, bacteria, and other photosynthesizing organisms, while heterotrophs include animals, fungi, protists, and bacteria.
Heterotrophs obtain energy from food through the process of cellular respiration. For instance, during aerobic respiration in mitochondria, they break down sugars in the form of glucose into carbon dioxide and water to obtain energy in the form of ATP or adenosine triphosphate.
aerobic respiration: C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP
glucose+ oxygen → carbon dioxide+ water+ energy
How does the spread of an airborne pathogen compare to the spread of foodborne and person-to-person pathogens
Answer:
You must come in contact with the infected air. It spreads slower, and more than one person is usually affected at the same time.
Explanation:
When a substance is added to meat, amino acids are produced.
What is this substance?
A) a hormone
B) an enzyme
C) an oil
D) water
The answer is B an enzyme ！
Answer:
[tex]\boxed {\boxed {\sf Enzymes}}[/tex]
Explanation:
Meat is a good source of protein because it is the main component. Hormones, oil, and water won't really produce a substance when added to meat. Enzymes break down different substances. The right enzyme can break down proteins. The monomer, or building block, of protein is an amino acid. Therefore, when a protein is broken down, amino acids are produces.
So, from the information above, we can assume that the substance is an enzyme. Enzymes break down meat/protein into amino acids.
Fully explain how cellular respiration is a chemical process whereby the bonds of food molecules and oxygen molecules are broken and the bonds in new compounds are formed resulting in a net transfer of energy.
Cellular respiration is a metabolic process called cellular respiration that converts glucose to ATP.
What is cellular respiration?Cellular respiration has the processes: Glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation are the phases of cellular respiration.
A glucose molecule gradually decomposes into carbon dioxide and water during cellular respiration. In the process of transforming glucose, some ATP is directly created.
But far more ATP is later created through a procedure known as oxidative phosphorylation. The electron transport chain, a collection of proteins enmeshed in the inner membrane of the mitochondrion, is what drives oxidative phosphorylation.
Therefore, Cellular respiration is a metabolic procedure by which glucose is changed into ATP.
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The process where severe droughts cause some lands to become deserts is called __(blank)__ pls help and ty! :))
Answer:
Desertification
Hope this helps!
why is active transport needed to take mineral ions into the cytoplasm of the root hair cell?
Answer: In plants, they need to move mineral ions from the soil into the roots. Mineral ions are more concentrated in the cytoplasm of plant cells than in soil water or dillute.
Explanation:
Minerals cannot be soaked up through osmosis since it only involves the movement of water. Because the minerals are in such low concentration, they cannot be absorbed through diffusion. Active transportation is used instead.
What is active transport?Active transport refers to the transport of molecules or ions into or out of a cell via the cell membrane, from a low concentration region to a high concentration region.
The particles use the energy released during respiration to move against the concentration gradient.
Active transport is defined as the movement of molecules against a gradient from a region of lower concentration to a region of higher concentration.
Active transport in plant root hairs allows plants to absorb mineral ions, which are required for healthy growth, even though the concentration of minerals in the soil is usually lower than in the root hair.
Thus, active transport is needed to take mineral ions into the cytoplasm of the root hair cell, as there is a need to move the minerals from the region of lower to higher concentration.
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Explain how Carbon is passed from photosynthesis to cellular respiration then back.
The main purpose of photosynthesis is to convert radiant energy from the sun into chemical energy that can be used for food. Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP.
https://orise.orau.gov/resources/k12/documents/lesson-plans/intro-to-photosynthesis.pdf
Experiment 5
Lisa is working on a science project. Her task is to answer the question:
"Does Rogooti (which is a commercial hair product) affect the speed of hair growth"? Her
family is willing to volunteer for the experiment.
1. Identify the hypothesis in this experiment.
2. State a conclusion to support your hypothesis. 3. State a conclusion that refutes the hypothesis.
Answer:
Hypothesis: The commercial hair product Rogooti accelerates hair growth.Conclusion 1: Rogooti makes hair grow faster than it would normally do when using an ordinary product.Conclusion 2: Rogooti does not seem to have any effect on hair growth.Explanation:
A hypothesis is a scientific conjecture, not verified, that requires corroboration. It is a possibility, but not a fact.
A hypothesis must express what is expected to occur comprehensively. There must be a logical relation between variables. It must be objective.
To answer the question, Lisa might propose the following hypothesis, which needs to be corroborated.
Hypothesis: The commercial hair product Rogooti accelerates hair growth.
Experiment: Her family is a volunteer for the experiment, so all of them will use an ordinary hair product for a month. Before and after this period they will take notes of how long their hair is before and after the first part of the experiment. After this, they will cut down their hair to the initial length, and they will start using Ragooti for another month. After this last one, they will measure hair length again. Finally, Lisa will compare the initial length with the one after the first month and after the second month to analyze how Rogooti affects the speed of hair growth.
Result 1: When comparing lengths, Lisa will see that the hair of all her family members grew longer during the second month.
Conclusion 1: Rogooti makes hair grow faster than it would normally do when using an ordinary product.
Result 2: When comparing lengths, Lisa will not see any significant difference in the hair growth of her family during the first and the second month.
Conclusion 2: Rogooti does not seem to have any effect on hair growth.
How do plants “catch” sunlight?
Answer: The leafs capture the suns energy.
Answer:
Sunlight is captured by chlorophyll.
What is the twisted ladder shape of the DNA called?
:3-D model
:nucleotides
:double helix
:single strand
Answer:
C the person above i think is correct because I’ll try the answer I’ll, tell you if it right :)
Explanation:
After I finish the quiz: yes it is correct
FOR THE SECOND TIME-----Ughhh can someone answer this dang biology question I cant!!!!! I will mark you brainliest!!Referring to the graph, what phases together would account for approximately 25% of the time spent from a cell in the cell cycle?
A) M phase and S phase
B) S phase and M phase
C) G1 phase and M phase
D) G2 phase and M phase
Answer:
D. G2 phase and M phase
Explanation:
If we are looking for what takes up 25% of the graph, that would be the last option. If you look at G1, it takes up about 50%. So, G1 phase and M phase would take up more than that, and we want 25% not 50+. The M phase and S phase would take up about a third, so no. The G2 phase and M phase takes up roughly 25% or, it's the closest to this.
According to Figure 2–6, which enzyme would you expect to find in a bacterium growing in a hot spring?
Organ systems maintain which of the following at
just the right
levels to support life processes?
a.) pH
b.) Carcinogens
C.) Temperature and pH
d.) Carcinogens and pH
Answer:
C.) Temperature and pH
Explanation:
Organ systems maintain the right temperature and pH levels to support life processes.
This is known as internal regulation or homeostasis.
Processes that support life requires some amount of fairly constant conditions for optimum level of metabolism to be attained. When the conditions are poor or in excess, reactions can greatly suffer. The ability of complex organism to maintain the right levels to support life processes is called homeostasis. pH and temperature are very important to all living organisms.Answer:
i just did the same question
Explanation:
Which organisms inhaled CO2 and exhaled 02 to 100s of millions of years, increasing the amount of O2 in the atmosphere?
Answer:
Plants
Explanation:
Plants 'inhale' CO2 and 'exhale' O2.
How do ocean currents affect weather in areas close to shore?
Answer:
Warm and cold ocean currents can affect the climate of an area along the coast if the winds blow in from the ocean. Warm ocean currents heat the air above the water and carry the warm air to the land, increasing the temperature of the coastal region.
Explanation:
hope it helps
Answer:
Warm and cold ocean currents can affect the climate of an area along the coast if the winds blow in from the ocean. Warm ocean currents heat the air above the water and carry the warm air to the land.
Explanation:
Hope this helped :)
Which effects would many organisms likely experience if global warming occours check all that apply
Disrupted food webs
Increased competition
Increased number of glaciers
Disrupted life cycle events
Forced relocation
Answer:
A. disrupted food webs B. increased competition D. disrupted life-cycle events E. forced relocation
.Which of the following lists contains only arthropods?
A
annelids, insects, myriapods CADA STAVI819 UAB
B.
arachnids, crustaceans, myriapods
С
crustaceans, insects. molluscs
D insects, myriapods, nematodes
Answer:
Arachnids, crustaceans, myriapods.
Explanation:
Arthropods are animals that form the phylum Euarthropoda. This phylum includes the arachnids, crustaceans, myriapods, and insects. The defining characteristic for an animal to be considered an arthropod is that it has to have an exoskeleton, meaning that the skeleton of the animal is acting as a shell to the body, covering it from the outside.
At present, all of the species of arthropods are small in size, though in the distant past there were speciemens that can be considered as medium-sized or even large. The exoskeleton has its advantages and disadvantages. An advantage is that it is very hard and it covers fully the internal organs, thus protecting them. A disadvantage is that it limits the size to which these animals can grow as the exoskeleton cannot support the weight of the body after certain point.
Which of the following processes describes a chemical change?
Answer: The breakdown of particles of food by acid in the stomach
Explanation: Just ‘cause I think it’s right
During glycolysis, what is the source of the chemical energy that is captured in ATP?
A. the chemical bonds in pyruvic acid
B. the chemical bonds in glucose
C. the nuclei of atoms in glucose
D. high-energy electrons in the cytoplasm
The study of the cell is called cell biology.
The correct answer to the question is option B which is the chemical bonds in glucose.
What is glycolysis?The breakdown of glucose into pyruvic acid is called glycolysis.
According to the question, the source of the ATP is by breaking down the glucose molecule and forming the ATP by gaining the extra phosphate molecule.
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Some viruses attack cells by attaching to their outer covering, entering, and taking over their genetic "machinery". Viruses are able to invade cells after first attaching to their
A. nuclear membrane
B. Viral proteins
C. Genetic Memory
D. Cell membrane
E. Other
Answer:
I think cell membrane is answer
Viruses are able to invade cells after first attaching to their Cell membrane.
What are viruses?A virus is an infectious microorganism made up of a protein-coated segment of nucleic acid (either DNA or RNA). A virus can't multiply by itself; it has to infect cells in order to utilise the host cell's components to make copies of itself.
A virus frequently causes harm to the host organism by killing the host cell in the process. AIDS, COVID-19, measles, and smallpox are well-known examples of viruses that cause human disease.
Viruses can infect people. But in reality, viruses infect a wide variety of organisms. For example, there are viruses that infect fungi and viruses that infect bacteria.
Therefore, Viruses are able to invade cells after first attaching to their Cell membrane.
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Why do heart cells have different characteristics than skin cells???
Heart cells have different DNA than skin cells.
Heart cells reproduce by mitosis.
Heart cells express different genes than skin cells.
Heart cells reproduce by cell differentiation.
Answer:
Heart cells express different genes than skin cells
Explanation:
Cells contain instructions for their gene expression within stretches of DNA called genes, which is expressed and translated into protein.
Somatic cells are cells which contain the organism's chromosome number. They contain the entire karotype- and divide/ replicate through mitosis. In several stages of mitosis, DNA becomes condensed, is unwound and replicated, then packaged into two identical daughter cells.
All somatic cells start out undifferentiated (as stem cells). AFter the process of differentiation, they undergo changes in gene expression to become specific cell types, through processes like methylation and gain maturity.
If an individual has the genotype Bb, what alleles can it pass on to its
offspring?
A. Only B
B. Neither B norb
C. Either B or b
D. Only b
If a person possesses the genotype Bb, either the B or the b alleles can be passed on to their progeny. So, the correct option is C.
What is Genotype?An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual carries inside a specific gene or genetic region are also referred to as the genotype.
The term "genotype" relates to an organism's whole gene pool, or, in other words, the genetic make-up of that creature. The phrase can also be used to describe to the alleles, or different forms of a gene, that an organism carries in a more specific meaning. Symbols can be used to symbolise it. For illustration, BB, Bb, and bb could be used to denote a certain gene variant.
If a person has the genotype Bb, as in the example above, then either the B or the b alleles can indeed be passed on to their progeny.
Therefore, the correct option is C.
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2.Which of the following is NOT an example of symbiosis? A. red blood cells containing malaria. B. vines using a tree for support C. nitrogen-fixing bacteria and the roots of legumes D. pigs feeding at a trough
Answer:
A. red blood cells containing malaria
Explanation:
Malaria is a disease-causing pathogen in humans. It is caused by species of the parasite Plasmodium sp., which is transmitted as sporozoites by the Anopheles mosquito upon biting the host. These travel through the bloodstream to the liver where they mature into merozoites. These reenter the bloodstream and mature into trophozoites and schizonts that produce more merozoites.
When they multiply within the red blood cell, they burst the red blood cell open, and go on to infect other cells. This infection's symptoms are cyclic and include high fever, chills and other flu-like symptoms.
Malaria is a deadly illness, causing harm to its hosts, and in many cases death. Thus, this cannot be defined as symbiosis, which is typically beneficial to both organisms.
Influenza (the flu) is caused by a virus that attacks the respiratory system. Which type of gene is most likely to be widely expressed in the body of someone who contracts the influenza virus?
the gene that controls the production of stem cells
the gene that controls the production of skin cells
the gene that controls the production of red blood cells
the gene that controls the production of white blood cells
Answer:
D is the correct option.
Explanation:
all my answers got deleted.
Answer: THE ANSWRER IS D
Explanation: I TOOK THE TEST
It's a hot summer day & you decide to mow the lawn, Mowing the lawn will be an intense activity, but your lawn is small & will take you only 10
minutes to mow. Before mowing you want to have a snack,
1. Name the 4 biomolecules that are found in different foods:
Answer:
Carbohydrates, proteins, lipids and nucleic acids.
Explanation:
Biomolecules are organic and are carbon containing and are of four types which are carbohydrates, proteins, lipids and nucleic acids.
Carbohydrates are part of our major diets and are found in grains, fruits and vegetables and so on.
Carbohydrates are energy producing food through glucose.
Lipids contain both fat and oil and they are hydrocarbon and non polar molecules that don't dissolve in water. They provide energy, insulation in the environment and are major constituent of plasma.
Proteins are organic molecules found in meat, milk, beans, cheese e.t.c.
They are body building food or serve as building blocks.
They are enzymes and hormones which are involved in body mechanisms.
Nucleic acids are composed of deoxyribonucleic acid(DNA) and ribonucleic acids. They are the genetic constituent of living organisms and they carry the genetic information.
Is our current model of the solar system geocentric or heliocentric?
Answer:
HELIOCENTRIC
Explanation:
Answer:
heliocentric
Explanation: