Answer:
Physical digestion prepares the food for chemical digestion.
Answer:
D
Explanation: Physical digestion prepares the food for chemical digestion.
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:
Plz help me with this.
differentiate between arteries and veins what is the importance of capillaries in the circulatory system.
Answer:
Arteries-1.Involved in carrying pure, oxygenated blood and nutrient-rich blood.
2.Consists of three distinct layers, which are rigid, thicker and highly muscular.
3.Located deep within the body.
4.Red in colour.
5.Carry blood away from the heart to various parts of the body.
6.High pressure, as the blood flows by the pumping pressure of the heart.
7.Comparatively higher oxygen level.
8.The level of carbon dioxide is low
9.Lumina is narrow
10.Valves are absent
11.Arteries are at a greater risk of certain diseases like angina pectoris, atherosclerosis, etc.
Veins-1.Involved in carrying impure, deoxygenated blood
2.Consists of three distinct layers, which are thin and collapsible.
3.Peripherally located closer to the skin.
4.Blue in colour.
5.Carry blood towards the heart from the various parts of the body.
6.Low pressure, as the blood flows by the capillary action of the veins.
7.Comparatively low oxygen level.
8.The level of carbon dioxide is high
9.In upward direction from the body tissues to the heart.
10.Lumina is wide & Valves are present.
11.Veins are less susceptible to diseases such as varicose veins.
Though tiny, the capillaries are one of the most important parts of the circulatory system because it's through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries.
Explanation:
Hope this helps you
Crown me as brainliest:)
i need help with this asapp
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
Homeostasis is maintained by which of the following organ systems in humans?
A. Multiple organ systems working together
B. The muscular system
C. The endocrine system
D. The nervous system
A. Multiple organ systems working together
Explanation:
All of the organ systems work together to maintain homeostasis in humans because each system does something different. For example, the circulatory system delivers oxygen rich blood to the bones and the bones create new blood cells. When one thing is wrong with one system, it affects all of the systems, like a disease. Another example of this would be the central nervous systems and endocrine working together to coordinate messages to the brain about the body's state while resting and exercising to maintain homeostasis.
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.
Which of the following statements is true regarding active transport?
A. It does not use any of its own energy.
B. It uses some of its own energy.
C. It uses energy from other cells.
D. It uses the energy stored mainly in the nucleus.
Answer:
I think c
Explanation:
active transport uses energy from ATP which is not found in the nucleus. so we know it uses energy which is not it's own and ATP is not apart of the nucleus so that leaves c
How can a ‘FIXED’ cell be used to estimate the time spent in each phase of mitosis.
monster genetic lab
anyone?? it’s important
Answer:
Monster genetic lab is important because it is usés for testons or DNA etc
How might retaining too much heat be a disadvantage to an organism?
Excessively heat can damage the plasma membrane and disrupt subcellular structures such as membrane proteins and enzymes.
What are subcellular structures?The following are the primary subcellular structures found in animal cells: The nucleus is where genetic material is stored.
Cell membranes regulate what enters and exits the cell. Mitochondria: aerobic respiration site. Ribosomes are the sites where proteins are synthesized.
Protein denaturation occurs at high temperatures and affects protein folding, bonding, and other types of behavior.
Furthermore, membrane proteins play an important role in cell function regulation. If these are disrupted, the system will be unable to maintain homeostasis, or a stable internal environment.
Heat can damage the plasma membrane and disrupt subcellular structures like membrane proteins and enzymes.
Thus, this way, retaining too much heat can be a disadvantage to an organism.
For more details regarding subcellular structures, visit:
https://brainly.com/question/13553981
#SPJ2
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
Several groups of students were comparing the processes of mitosis and meiosis. Each group came up with a different answer for how the two processes are different. Which of the groups made a statement about mitosis and meiosis that is most correct?
A). Group 1, they said that mitosis is involved in the growth and repair of cells and undergoes cell division twice, while meiosis is involved in sexual reproduction and undergoes cell division once.
B). Group 2, they said that mitosis is involved in the growth and repair of cells and undergoes cell division once, while meiosis is involved in sexual reproduction and undergoes cell division twice.
C). Group 3, they said that mitosis is involved in sexual reproduction and undergoes cell division twice, while meiosis is involved in the growth and repair of cells and undergoes cell division once.
D). Group 4, they said that mitosis is involved in sexual reproduction and undergoes cell division once, while meiosis is involved in the growth and repair of cells and undergoes cell division twice.
Answer:
B)
Explanation:
Several groups of students were comparing the processes of mitosis and meiosis. Each group came up with a different answer for how the two processes are different.
Mitosis- growth and repair one cell division 2 genetically identical diploid cells
Meiosis- produce gametes, two cell division, 4 genetically different haploid cells
Hope this helps :)
The group that is correct regarding mitosis and meiosis is group 2 as they said that mitosis is involved in the growth and repair of cells and undergoes cell division once, while meiosis is involved in reproduction through fusion of gametes and undergoes cell division twice. The correct option is B.
What is cell division?Type of cell division by which a parent cell divides into two or more daughter cells when a parent cell divides into two or more daughter cells. Cell division is typically part of a larger cell cycle.
Cell division occurs in two stages namely mitosis and meiosis. When most people say cell division, they're referring to mitosis, the method by which new body cells are formed.
Meiosis is the process by which egg and sperm cells are formed. Mitosis is a necessary process for life.
The group 2 is stating the same that mitosis is the division for growth and repair and is done in only once, and meiosis is the process of gamete formation and occurs twice.
Thus, the correct option is B.
For more details regarding cell division, visit:
https://brainly.com/question/13312481
#SPJ6
In eukaryotes, the Krebs cycle takes place within the
The process where severe droughts cause some lands to become deserts is called __(blank)__ pls help and ty! :))
Answer:
Desertification
Hope this helps!
Cows host a variety of bacteria in their bodies. Many of these bacteria live in
their digestive tracts and help them digest the grasses they eat. In turn, the
bacteria receive a place to live and a plentiful food supply. What kind of
relationship is this?
1.commensalism
2.Amensalism
3.Mutualism
4.parasitism
Answer:
Commensalism
Explanation:
Commensalism, in biology, a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter.
HEEEELP! ASAP! What similarities and differences do you see in the two organisms in image 3?
Answer:
⟱⟱⟱
Explanation:
similarities
thick skin
tusk
feet
differents
height
tail
ears
Answer: Similarities : Tusks, trunk, legs, floppy ears.
Differences : Smaller ears, shorter (smaller build), shorter tail, different facial shapes.
Explanation:
I hope I listed what you needed! Have a fantastic day and good luck! (:
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.
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:
Renewable or nonrenewable
1: nonrenewable
2: renewable
3: nonrenewable
4: nonrenewable
5: renewable
6: renewable
7
8: renewable
9: renewable
10:nonrenable
11: renewable
12: nonrenewable
13: nonrenewable
14: renewable
15: non renewable
16: nonrenewable
17: renewable
18: non renewable
19: non renewable
20: non renewable
I'm not sure about number 7 because nuclear energy its self is a renewable resource but what is used in nuclear powerplants is not.
Greenhouse gases are measured by their ability to trap outgoing solar radiation and convert it to heat, warming the atmosphere.
Global warming potential is defined as the ability of an atmospheric gas to contribute to increasing global temperatures and
anthropogenic climate change. Carbon dioxide is used as a baseline for global warming potential, with a GWP of 1. What best
explains why CFCs (chlorofluorocarbons) have a GWP
nearly 5000?
Answer:
Greenhouse gases, such as carbon dioxide, methane, nitrous oxide, and certain synthetic chemicals, trap some of the Earth's outgoing energy, thus retaining heat in the atmosphere. This heat trapping causes changes in the radiative balance of the Earth—the balance between energy received from the sun and emitted from Earth—that alter climate and weather patterns at global and regional scales.
Multiple lines of evidence confirm that human activities are the primary cause of the global warming of the past 50 years.1 Natural factors, such as variations in the sun's output, volcanic activity, the Earth's orbit, the carbon cycle, and others, also affect Earth's radiative balance. However, beginning in the late 1700s, the net global effect of human activities has been a continual increase in greenhouse gas concentrations.
This change in concentrations causes warming and is affecting various aspects of climate, including surface air and ocean temperatures, precipitation, and sea levels. Human health, agriculture, water resources, forests, wildlife, and coastal areas are all vulnerable to climate change.
Many greenhouse gases are extremely long-lived in the atmosphere, with some remaining airborne for tens to hundreds of years after being released. These long-lived greenhouse gases become globally mixed in the atmosphere and their concentrations reflect past and recent contributions from emissions sources worldwide. Others, like tropospheric ozone, have a relatively short lifetime in the atmosphere.
Explanation:
Brainliest please?
Using at least three sentences, describe the process of weathering, and explain how it can happen physically or
chemically?
Answer: Chemical weathering decomposes or decays rocks and minerals. An example of this is water and limestone. Organic weathering happens when plant break up rocks. One the rock has been weakened and broken up it is ready for Erosion. This happens when rocks are picked up and move usually by water. Mechanical weathering breaks up rocks, this usually happens when water gets into cracks, freezes and expands the rock
Explanation:
Answer:
chemical weathering decomposes or decays rocks and minerals. An example of this is water and limestone. Organic weathering happens when plant break up rocks. One the rock has been weakened and broken up it is ready for Erosion. This happens when rocks are picked up and move usually by water. Mechanical weathering breaks up rocks, this usually happens when water gets into cracks, freezes and expands the rock
Explanation:
Is our current model of the solar system geocentric or heliocentric?
Answer:
HELIOCENTRIC
Explanation:
Answer:
heliocentric
Explanation:
Cellulose is a type of
A. protein
B. carbohydrate
C. grass
D. lipid
B Because Cellulose is a polysaccharide consisting of linear chain of numerous linked D-glucose units whereas proteins are formed of number of amino acids linked together by peptide linkage.
Cellulose is a polysaccharide and a structural component of the plant cell. It is a carbohydrate made of many monomers linked together. Thus, B is the correct option.
What is cellulose?Cellulose is an organic chemical that is insoluble in water and is a tough structure classified as carbohydrates. Cellulose is a structural component of plant cells.
It is made by monomer units linked by the beta-1,4 glycosidic bonds and is a biodegradable, tasteless organic compound with the chemical formula (C₆H₁₀O₅)ₙ.
It is the main component of the plant cell wall that provides support and shape due to its fibrous structure. It is made of linear chains of D-glucose units that makes the polysaccharide.
Therefore, option B. cellulose is a carbohydrate.
Learn more about cellulose here:
https://brainly.com/question/5957180
#SPJ5
Which phrase describes the equator?
is a line of longitude
is situated at 0 degrees
connects the North and South Poles
separates the Eastern and Western Hemispheres
Answer:
b) is situated at 0 degrees
Explanation:
the equator is the latitude and it is like a rule in an equal-area map, when you put it horizontally at the center of the earth the rule is at 0 degrees but if you put it vertically at the center it is 90 degrees
and I just take the test, hope it helps :)
Answer:
b is situated at zero degrees
Explanation:
Which will have the greatest impact on the effects of disease in a population?
Answer:
Nutrition is the answer bcz without nutrition the diseases will effect more in a population
According to Figure 2–6, which enzyme would you expect to find in a bacterium growing in a hot spring?
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.
List and describe one example of a food chain that contains at least 4 organisms and 4 feeding relationships.
HELPP PLEASEEE
Answer:
grass, rat, snake, hawk
Explanation:
ones eats d other
Answer:
plant, insect, mouse, owl
plant makes food from the sun
insect eats plant
mouse eats insect
owl eats mouse
???usually means clear weather because stable air is sinking.
O A. High humidity
B. Lower air pressure
C. Low humidity
D. Higher air pressure
High air pressure usually means clear weather because stable air is sinking. The correct option would be D.
High air pressureHigh air pressure usually causes the sky to be clear.
This is because high air pressure causes the air at the lower atmospheric level to sink down towards the earth.
This is unlike low air pressure. It brings a cloudy sky along with precipitation.
More on air pressure can be found here: https://brainly.com/question/15189000
#SPJ1