that's true
stroke volume is the volume of blood pumped by each ventricle per beat
cardiac output is the blood pumped by ventricles per minute
Why is the alpine tundra biome worth protecting WELL GIVE BRAINLIEST IF YOU CAN HLO ME
Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels
Two closely related beetle species are in the same location. They exhibit reproductive isolation, and they are both diploid. Biologists are arguing about whether it is more likely that they evolved via sympatric or via allopatric speciation. What statement presents the best argument
How are gymnosperms in category gnetophyta usually pollinated?
A. by wind
B. by hand
C. by insects
D. by water
Answer:
by insects
Explanation:
laws of thermodynamics
Answer:
The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The First Law of Thermodynamics states that energy can be converted from one form to another with the interaction of heat, work and internal energy, but it cannot be created nor destroyed, under any circumstances. The 3rd law of thermodynamics will essentially allow us to quantify the absolute amplitude of entropies.
The negative effect humans have on the stability of the environment is mostly directly linked to an increase in
Explanation:
Machinery as an energy unit for agricultural work produces a negative impact on the environment on soils, waters and the atmosphere. ... In the exploitation process it exerts impacts such as: soil degradation, water pollution and pollution of the atmosphere.
All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in
Answer:
I think the answer will be protein.
Answer:
the answer is carbohydrates
People with one copy of the allele that causes sickle cell anemia are called _______, while people with two copies of the allele have the disease.
Answer:
dominance
Explanation:
answer for pf
use numbers to arrange the events of a demographic transition in order in which they occur
is this correct?
(DTM) is defined by a country's death rate dropping quickly while its birth rate staying high. Because of this, a nation in Stage 2 will show an increase in its general population—not because the birth rate is rising, but because births outnumber deaths.
What are the different events of a demographic transition?The demographic transition model was initially proposed in 1929 by demographer Warren Thompson. The four stages of the paradigm are pre-industrial, urbanizing and industrializing, mature and post-industrial.
Stage 1: Slow population growth is caused by high birth and mortality rates. Stage 2: While the birth rate stays high and the death rate declines, population growth accelerates. Stage 3: Population growth slows as the birth rate starts to decline.
Therefore, 1,4,2 and 3. It is correct events of a demographic transition in the order in which they occur.
Learn more about demographic transition here:
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how does the energy of the reactants and products differ between an energy absorbing reaction and an energy releasing reaction
The mass of the products is larger than the concentration of the reactants in an energy absorption process.
The power of the reaction mixture is larger than the radiation of the outputs in an energy-releasing process.
As substances disrupt bonds, energy released, and then when outputs make new bonds, release energy.
Exothermic processes release energy, whereas endothermic reactions consume it. There is no general change in the quantity of energy throughout a chemical process, whether it collects or releases it.
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Explain osmosis using this image
Answer:
A liquid moving from an area of low concentration, to an area of high concentration through a semi-permiable membrane.
Explanation:
Hope this helps :)
Polymers are formed via dehydration reactions by molecules. Which of the following best describes a dehydration reaction?
Assembling molecules in either carbonyl or carboxyl functional groups
Assembling molecules in either hydroxyl or carboxyl functional groups
Dissembling molecules in carboxyl functional groups
Dissembling molecules in hydroxyl functional groups
The correct answer is; "Assembling molecules in either hydroxyl or carboxyl functional groups"
Polymers are formed from monomers either by condensation or by addition of monomers.
A polymer is formed by the joining of one or more monomers. This can happen in either of the following ways;
condensationadditionCondensation polymerization involves the loss of a small molecule. When the molecule that is lost is water, we can call it dehydration. Loss of molecules does not occur in addition polymerization.
The two monomer molecules that join to yield the polymer by dehydration must have H and OH moieties in suitable positions for dehydration to occur. A typical example is assembling molecules in either hydroxyl or carboxyl functional groups.
For more about condensation polymerization, see
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Name the following.
(a) Tissue that forms the inner lining of our mouth.
(b) Tissue that connects muscle to bone in humans.
(c) Tissue that transports food in plants.
(d) Tissue that stores fat in our body.
(e) Connective tissue with a fluid matrix.
(f) Tissue present in the brain
PLEASE HELP ME
Show the importance of the inheritance of how steps in meiosis change chromosomes through one of these processes.
Background: Meiosis is the process used by sexually reproducing organisms and is made up of eight sub-steps or phases. During meiosis, chromosomes can be changed through crossing over and nondisjunction leading to changes in the inherited traits of offspring.
Meiosis is the process that occurs in sexually reproducing organisms in the sex cells of male and female organisms.
Variation occurs in an organism due to the process of crossing over which only occurs in meiosis in which the chromosomes between non-sister chromatids exchanged. Meiosis also causes genetic variation due to the process of recombination so in inheritance, meiosis has great importance and impact on the shape and structure of organism.
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What does seafloor spreading mean
Answer:
The formation of fresh areas of oceanic crust which occurs through the upwelling of magma at mid-ocean ridges and its subsequent outward movement on either side.
How are photosynthesis and cellular respiration similar?
A. Both processes produce oxygen and glucose?
B. Both processes and release energy
C. Both processes involve energy-carrier molecules
D. Both processes produce oxygen
Answer:
The two processes are similar in that they both produce energy, albeit in two different forms. ... The win-win of the two processes is that they both provide each other with the necessary ingredients for the process to take place: glucose and oxygen for cellular respiration, carbon dioxide and water for photosynthesis.
what is area? pls answer my question!
Here is your answer
Area is a measure of how much space there on a flat surface.
Consider the following marine community: Sea otters prey on sea urchins and therefore help maintain a healthy sea urchin population. Sea urchins prey on kelp. By helping to maintain viable sea urchin populations, the sea otters are also allowing enough kelp to grow and act as a habitat for other organisms. Suppose that a bacterial infection swept across a sea otter population and killed most sea otters before they could reproduce. How would the marine community be affected
Answer:
There will be a larger sea urchin population and less kelp. Having less kelp will result in habitat loss for other organisms.
Explanation:
The sea otters preyed on the sea urchin, and the sea urchin preyed on the kelp. When the sea otter population whipped, there was no other organism to prey on the sea urchin. This leads to a larger population of sea urchins, and now since this happened, there will be less kelp because the population of sea urchins has increased, and that's what they feed on. With less kelp, there will not be a habitat for other organisms.
blood flows through many small tubes if the dialyser. what is the significance of this
Answer:
Blood flows through smaller tubes to mimic the actual rate of blood flow in the body. This makes the dialysis machne safe for the body. Th dialysis machine can also adjust pressure in accordance of a persons blood pressure
Explanation:
Which of the following is not a possible source of energy for chemosynthetic organisms?
a. oil
b. hydrogen sulfide
c. methane
d. water
Please select the best answer from the choices provided
B
Ο Ο Ο Ο
D
Answer:
The answer is a. Oil.
Explanation:
Oil is not a possible source of energy for chemosynthetic organisms.
Answer:
water on edge
Explanation:
Food chains represent
1 point
the movement of energy through the environment
the movement of energy from a consumer to producer
the loss of energy in the ecosystem
the importance of DNA
what is photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide,water and minerals
What is the relationship between light intensity and ATP production?
Answer:
Abstract
Explanation:
Among the primary biochemical changes evoked by illumination in dark-grown mycelia of Trichoderma viride is the temporal rise in the intracellular level of ATP. We investigated the dependence of ATP changes on light intensity and exposure. Marked changes in the intracellular ATP levels occurred within 10 min of the onset of illumination and their rapidity was proportional to the light intensity. Statistically significant changes in the intracellular levels of ATP were observed at light intensities in the range of 0.9–2.5 klx with the maximum increase (150% above the intracellular level of ATP in the dark control) at 1.2 klx.
Starving children may die from eating many lychee fruit but children who have eaten during the day or not affected. Explain why.
Answer:
Fruits should never be eaten when one hasn't had a proper meal.
Answer:
Sooo lychee fruit is actually used for Digestion.AKA best to digest food
Explanation:
so if the children that are starving eat those fruit ..what they be digesting with thier empty stomach
thus led to death or smt
hope it'll help :)
Which of the following is an organic molecule?
Answer:
Methane
Explanation:
Nature Constitution most of the substances made up of organtic compounds. These compounds have carbon atoms attached with hydrogen atoms with a chemical bond (very few may not have many this bond).
What are the phases of a scientific method?
Answer:
Ask a Question
Do Background Research
Construct a Hypothesis
Analyze Your Data and Draw a Conclusion
Communicate Your Results
Explanation:
by which large pieces of food are cut and crushed into
smaller pieces is called
a. emulsification b. chemical digestion
c. absorption de mechanical d
5. The tube that connects the mouth to the stomach is the
a. esophagus. b.epiglottis
c. peristalsis. d. pancreas.
5. The hard, outer coating of the tooth is called
a, a molar.
b. enamel.
c. an enzyme. d. dentin
- The building blocks of proteins are
a. enzymes. b. minerals,
c. amino acids, d. molecules
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C d. vitamin B
. Having too little of the mineral iron can cause
a. rickets.
b. goiter.
c. anemia d. beriberi.
The wavelike motion that moves food through the digestive tract is called
a. emulsification b. digestion. c. oxidation d. peristalsis.
. The enzyme that digests proteins is called
a. gastric juice. b. pepsin. c. chyme. d. lipase.
Food leaves the stomach in a thick, liquid form called
a. chyme. b. bile с. pepsin.
d. saliva
The movement of food molecules from the digestive system to the blood is called
a. emulsification. b. chemical digestion. c. absorption d. peristalsis.
Gastric juice contains all of the following except
a. hydrochloric acid
b. mucus c. pepsin
d. bile
The process by which large food molecules are broken down into smaller food
molecules is
a. chemical digestion. b. oxidation c. mechanical digestion d. absorption
d. mouth
Fats are digested in the
a. large intestine b. small intestine. c. stomach.
Poor nutrition caused by an unbalanced diet is called
a. rickets. b. anemia. c. malnutrition
d. goiter.
The fingerlike projections on the lining of the small intestine are called
h cilia
d. villi.
c. bile
Answer:
by which large pieces of food are cut and crushed into
by which large pieces of food are cut and crushed intosmaller pieces is called:
d. mechanical digestion
5. The tube that connects the mouth to the stomach is the:
a. oesophagus
5. The hard, outer coating of the tooth is called:
b. enamel
- The building blocks of proteins are:
c. amino acids
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C
. Having too little of the mineral iron can cause:
b. goitre
The wavelike motion that moves food through the digestive tract is called:
d. peristalsis
Gastric juice contains all of the following except:
d. bile
The process by which large food molecules are broken down into smaller food
The process by which large food molecules are broken down into smaller foodmolecules is:
c. mechanical digestion
Fats are digested in the:
b. small intestine
Poor nutrition caused by an unbalanced diet is called:
c. malnutrition
The fingerlike projections on the lining of the small intestine are called:
b. villi
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Answer:
d. mechanical digestion
a. esophagus
b. enamel
c. amino acids
a. vitamin D
c. anemia
d. peristalsis
b. pepsin
a. chyme
c. absorption
b. mucus
a. chemical digestion
b. small intestine
c. malnutrition
b. villi
Not 100% sure on some of these but very positive on most of them :) Hope this helps.
Explanation:
Does anyone know the answer for 1?
Describe how genetic engineering can improve human health.
Answer:
Genetic engineering is the change of a combination of genes. It can change how someone can look or discover a deathly disease that they can change into something not so deathly. If a family has a history of cancer, scientists can alter it to make it less easy to get.
Hope this helped.
what is tissue A called?
Answer:
Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous
Hi I am really struggling with this question. I'll take any help I can get. :)
Answer:
Question- How does temperature affect rate of respiration?
Independent V. - Temperature
Dependent V. - Rate of respiration
Constants
- Fish species
- Water oxygen levels
- Size of the fish
Hope this helps!
