Answer:
Convection is the method of heat transfer by which the movement of actual molecules occurs. In liquids and gases, the molecules are loosely packed, hence can move. On the other hand, in solids, the molecules do not have space to move, hence convection does not occur.
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how does cancer affect our body tissue
Answer:
Cancer is the uncontrolled growth of abnormal cells in the body. Cancer develops when the body's normal control mechanism stops working. Old cells do not die and instead grow out of control, forming new, abnormal cells. These extra cells may form a mass of tissue, called a tumor.
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2. Describe one way your body responds to a hot environment, and explain how this response helps to keep your body temperature from rising too high
Which of the following is a primary producer?
а
Blue Heron
b
Wild Rice
с.
Bacteria
d
Pike Fish
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Answer:
C
Explanation:
Chloroplasts are necessary for plant cells to get energy. Plants are autotrophs, which means that they need to make food/energy by themselves to survive, and plants do so using a process called photosynthesis that chloroplasts aid in. Both plant and animal cells have a nucleus, cell membrane, and mitochondria, but only plant cells have chloroplasts. Therefore C.
What are the three possible ways that a species can react to a change in environmental
conditions?
Answer:
here
Explanation:
hibernate,change there coat,or migrate
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Answer:
d
Explanation: have a good day :]
Species X is an endotherm that is adapted to hot desert weather so that it is able to function well in 120 degree F temperatures. Based on what you know about temperature regulation, which of the following adaptations might allow Species X to live in such a hot environment?
A. Species X has more mitochondrial uncoupler proteins than cool-adapted species to help produce heat.
B. Species X has sensory neurons that are insensitive to temperature so it does not feel hot.
C. Species X does not internally regulate its body temperature so its body temperature is the same as its environment.
D. Species X has long thin ears to help dissipate heat.
Answer:
D. Species X has long thin ears to help dissipate heat.
Explanation:
Endothermic (i.e., warm-blooded) animals often have developed a series of strategies or adaptations associated with heat dissipation with the aim of maintaining thermal balance and avoid water loss. One of these complex adaptations may be the presence of thin ears capable of increasing the surface area of the skin where the blood vessels pass, thus promoting the loss of heat and thereby acting like 'heat radiators'. For example, large thin ears in elephants increase the blood supply, thereby enabling them to lose excess heat in very hot weather.
What did you know about Nerves? Explain the types of Nerves.
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Beyonce wants to test if eating more broccoli will make her stronger. What
is her independent variable? *
A) exercise done
B) strength gained
C) calcium in milk
D) amount of broccoli eaten
Answer:
d
...........................................
What form do you cells store energy?
Cells store energy in the form of ATP, or adenosine triphosphate. ATP is a molecule produced as a result of cellular respiration, and storing energy.
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What is one role that lipids play in the body?
They store coded information about heredity.
They make up the contracting structures of muscles.
They make up structural parts of cell membranes.
They provide a quick source of energy for cells.
Answer:
UMMMMMMM
Explanation:
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In which direction of the wave motion do longitudinal waves transfer energy
Answer:
B- Parallel
Explanation:
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Which are the most abundant elements in the bio molecules?
Answer:
carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur
Answer:
carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
Explanation:
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What force is jumping on a trampoline a push or a pull
Answer:A push
Explanation: If you jump on a trampoline it pushes you back up into the air.
A pine tree has recently seen a large amount of growth. A scientist looks at some of the cells under a microscope and notices that the cells are in different stages of the cell cycle, one cell appears to have finished the division stage, but has not fully completed the final phase of the cycle. Which of the following structures below best describes the part of the cell cycle the scientist sees, just before the conclusion of the cell cycle of a pine tree?
A. Cleavage furrow
B. Nuclear membrane
C. Centromere
D. Cell plate
Answer:
Centromere
Explanation:
How do most people who don’t live near lakes and rivers get their water
using rivers and wells
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What two things can never change for atoms of a certain element? (make sure you select both!)
A. atomic number
B. number of protons
C. number of neutrons
D. number of electrons
Answer:
A. Atomic number
B. Number of protons
Explanation:
Protons and electrons are what defines elements. If the number of protons or electrons was changed, you would have a completely different element.
The atomic number of an atom is the number of protons within its nucleus. Again, if you changed the atomic number, you would no longer have the same element.
Neutrons can be added or taken away from an element while keeping that elements properties. Atoms of the same element that differ in neutrons are called isotopes. Isotopes also differ in atomic mass from other atoms of that element, as the atomic mass of an atom is the amount of neutrons AND protons in its nucleus.
Electrons can also change in an atom. Atoms will lose and gain electrons when in contact with other atoms. An atom that loses an atom will have a positive charge (more protons than electrons), while atoms that gain an atom will have a negative charge (more electrons than protons). These are called positive and negative ions. You will likely learn about these later.
Important Vocabulary:
Atomic number: the number of protons an atom hasAtomic mass: the number of protons and neutrons an atom has (this defines the mass of the atom)Isotopes: atoms of the same element with different amounts of neutrons (these will also differ in atomic mass, see atomic mass definition)Unhealthy ecosystems are created by
Answer:
Removal of plants, and invasive species.
Explanation:
A group of 250 women over the age of 40 are recruited for a study to determine the effects that calcium has on bone health. Half of the participants are given a calcium supplement and the other half are given a placebo. If 13 women on calcium develop osteomalacia and 27 women not on the placebo develop osteomalacia, the relative risk for developing osteomalacia for women over 40 on a calcium supplement is 0.48 when compared to those women not taking a calcium supplement. This indicates that taking calcium has no effect on the population of interest's health because the relative risk is less than 1.0.
A. True
B. False
Answer:
A. True
Explanation:
The result indicates that taking calcium has no effect on the development of osteomalacia in the women. This is because, of the over 120 women placed on the calcium supplements, it happens to be minimal number of people ( less than 20 people) that develop the osteomalacia disease of the bone.
what is a scientific theory
Answer: scientific Theory. A single explanation that connects a large set of related observations or results from experiments. Scientific Theory. A process that includes the different ways that scientists find out about the natural world and try to explain what they have observed.
Explanation:
Nitrogen is a component of
Explanation:
Nitrogen is a component of amino acids and urea.
Hope this helps
Answer: Amino acids and urea
Explanation: Amino acids are the building blocks of all proteins.
One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water depends on the relative polarity of their R groups, particularly on the number of ionized groups: the more ionized groups there are, the more soluble the polypeptide. Which of each pair of polypeptides that follow is more soluble at the indicated pH?
(a) (Gly)20 or (Glu)20 at pH 7.0
(b) (Lys–Ala)3 or (Phe–Met)3 at pH 7.0
(c) (Ala–Ser–Gly)5 or (Asn–Ser–His)5 at pH 6.0
(d) (Ala–Asp–Gly)5 or (Asn–Ser–His)5 at pH 3.0
Answer
The answers are below:
1.
(Gly)20 or (Glu)20 at ph 7.0
The answer is (Glu)20 because at a pH of 7 it has high negative charges so (Gly)20 is less soluble since it would remain unchanged
2.
Lys–Ala)3 or (Phe–Met)3 at pH 7.0
The answer is (Lys-Ala)3 because it has high positive charges at this pH while (phe-met)3 is lower this it is less soluble.
3.
Ala–Ser–Gly)5 or (Asn–Ser–His)5 at pH 6.0:
(Asn–Ser–His)5 is more soluble because though both of these polymers have the side chain Ser, (Asn–Ser–His)5 also have polar Asn side chain also it's His side chain is partially proponated.
4.
(Ala–Asp–Gly)5 or (Asn–Ser–His)5 at pH 3.0:
(Asn–Ser–His)5 is more soluble at ph of 3. this is because Asp residues are not fully proponated and they are also neutral, while (Asn–Ser–His)5 has its His residues fully proponated and also positively charged.
Another step in PCR requires small single-stranded DNA primers to anneal to a target sequence on denatured DNA. Two primers are used. Ideally these primers will have similar melting temperatures. The melting temperature is defined as the temperature at which 50% of the DNA is in the single-stranded form. Which of the following primers will have the highest melting temperature?
A. GGGGAAATTTCCCC.
B. AAAAGGGCCCTTTT.
C. AAAAGGCCTTTT.
D. GGGAAATTTCCC.
Answer:
A. GGGGAAATTTCCCC.
Explanation:
When calculating the melting temperature in the DNA primers, we use the formula:
( 2 × ( A + T ) ) + ( 4 × ( G + C ) )
From the above formula; it is obvious that G and C have a greater tendency of participation when determining which DNA primers that have the highest melting temperature.
A. GGGGAAATTTCCCC = 8
B. AAAAGGGCCCTTTT = 6
C. AAAAGGCCTTTT = 4
D. GGGAAATTTCCC = 6
From the given options, we can see that option A have the highest component of G and C.
Write a paragraph.
Assume a cell has a membrane potential of -70 mV and a Cl- equilibrium potential of -81 mV. If the cell membrane is permeable to Cl-, will there be net movement of Cl- into or out of the cell? Explain.
Answer:
Cl- ions will move inside the cell.
Explanation:
When the equilibrium potential and is equal to membrane potential, the net charge across the membrane is equal to zero and therefore there is not movement of ions across the membrane. However, in this case, the membrane potential is -70 mV, while the equilibrium of negatively charged Cl- ions is -81 mV. In consequence, Cl- ions will tend to move inside of the cell.
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The lens in the eyepiece of a reflecting telescope breaks. How will this most affect the function of the telescope?
Answer:
A: Magnified images will appear upside down
Explanation:
Edge 2020
please help to know this question
Answer:
spontaneous generation is the correct answer
Explanation:
What happens when volcanoes release greenhouse gases into the atmosphere?
The climate gets warmer.
The climate gets cooler.
Winter becomes longer.
Summer becomes longer.
Answer:
a
Explanation:
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Gases from volcanic eruptions increase global temperature. The correct option is A. When volcanoes release greenhouse gases into the atmosphere the climate gets warmer.
What are the gasses involved in volcanic eruptions?
Many gases dissolved in magma are released during volcanic eruptions.
The most significant ones are water vapor, carbon dioxide, carbon monoxide, oxides of sulfur, hydrogen, nitrogen, fluorine, chlorine, boron, and arsenic.
Many of these gases are closely involved in the greenhouse effect, causing an increase in global temperature.
The emission of gases by volcanic eruptions is a natural process that might increase atmospheric pollution.
The correct option is A. When volcanoes release greenhouse gases into the atmosphere the climate gets warmer.
You can learn more about the volcanic eruptions at
https://brainly.com/question/3060831
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https://brainly.com/question/8727611
how important are the equipment in dressmaking?
Answer:
very importent
Explanation: