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Related Questions
In 1838 botanist Matthias Schleiden determined that all plants are composed of cells. In 1839 anatomist Theodor Schwann proposed that all animals are composed of cells. In 1855 biologist Rudolph Virchow added to Schleiden's and Schwann's observations and proposed that all living things are composed of cells. Which statement is also part of Virchow's cell theory?
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Answer:
This question lacks options, the options are;
A. All cells have a cell wall.
B. All cells arise from pre-existing cells.
C. All cells are capable of photoshynthesis.
D. All cells can develop into any other type of cell.
The answer is B.
Explanation:
The widely accepted universal cell theory is known to be contributed to by three scientists viz: Matthias Schleiden, Theodor Schwann and Rudolph Virchow.
As rightly stated in this question, Botanist Mathias Schleiden and Zoologist Theodor Schwann proposed that plants and animals are made up of cells in the year 1838 and 1839 respectively. However, in 1855, biologist Rudolph Virchow expanded the cell theory by adding that all living things are composed of cells and that these cells arise from pre-existing cells.
The collaboration of these three scientists brought about the cell theory that states:
* Cells are the basic unit of all living things.
* All living things are made up of one or more cells.
* All cells arise from pre-existing cells.
What is the difference in the number of chromosomes found in each cell produced in meiosis compared with mitosis?
a-Cells produced during meiosis have half the number of chromosomes as cells produced in mitosis
b- Cells produced during mitosis have half the number of chromosomes as cells produced in meiosis.
c-Cells produced during meiosis have the same number of chromosomes as cells produced in mitosis.
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The cells in our bodies contain 23 pairs of chromosomes - giving us 46 chromosomes in total. Sperm cells and egg cells contain 23 single chromosomes, half the normal number, and are made by a special form of cell division called meiosis. ... Meiosis II divides each chromosome into two copies (much like mitosis).
The law of segregation explains that * alleles of a gene separate from each other during meiosis. different alleles of a gene can never be found in the same organism. each gene of an organism ends up in the same gamete. all of the above
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Answer:
alleles of a gene separate from each other during meiosis.
Explanation:
Mendel observed that the F1 expressed only one of the alternative variants (in this case, only rounded seeds appeared), while the other variant (wrinkle) disappeared. Mendel named "dominant" the expressed variant. Mendel allowed auto pollination and observed that in the second generation, F2, the other disappeared variant reappeared. Both alternative variants were present in the F2. Mendel named "recessive" the second alternative variant.
Mendel thought that hereditary traits determined by discrete factors were the possible explication for these phenotypes. These factors should have been present in the F1 in pairs. One of them came from one parental plant, and the other factor came from the other plant. These factors then separated again when sex cells were produced, giving two types of gametes, each with only one factor.
Mendel concluded that each individual (plant) has a pair of factors (alleles), one for each trait (R and r) and that the pair separates (segregates) during the formation of the gametes. This conclusion is known as the segregation principle (First Mendels´ Low).
Which habitat is near the equator?
A. Tropical rain forest
B. Tundra
C. Deciduous forest
D. Desert
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Explanation:
Tropical rainforest, also spelled tropical rain forest, luxuriant forest found in wet tropical uplands and lowlands around the Equator.
Tropical rain forest habitat is near the equator. So, the correct option is A.
Where is Tropical rain forest?The majority of tropical rainforests are found in the tropics, between latitudes 23.5°N (Tropic of Cancer) and 23.5°S (Tropic of Capricorn). Central and South America, western and central Africa, western India, Southeast Asia, the island of New Guinea, and Australia are all home to tropical rainforests.
With an average annual temperature of above 22 degrees Centigrade and yearly rainfall of over 200 cm, tropical rain forests can be found there. Because of their density, the earth is not illuminated by the sun. These forests contain a wide variety of tree species, each of which sheds its leaves at a different time of the year.
Therefore, the correct option is A.
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ill give branliest
A city located in the middle of North America experiences extreme temperature changes during the year. This is an example of a what climate?
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What can scientists assume about individuals with similar anatomy?
I
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Answer:
Scientists compare the anatomy, embryos, and DNA of living things to understand how they evolved.
Explanation:
Evidence for evolution is provided by homologous structures. These are structures shared by related organisms that were inherited from a common ancestor. Other evidence for evolution is provided by analogous structures
Scientists use anatomy for the study of the evolution of DNA other organs and how they are modified.
Similar anatomy means homologous structure as they provide the information for evolved structure. They provide evolutionary evidence.
What is an analogous structure?
Organisms that have developed alongside special paths may also have analogous systems—that is, anatomical functions which can be superficially just like one another (e.g., the wings of birds and insects). Although such systems serve comparable functions, they have got pretty special evolutionary origins and developmental patterns.
Thus it is clear that scientists assume individuals with similar anatomy for evidence of evolution.
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How do coral reef ecosystems demonstrate the ecological principles of shifting baselines, disturbance, succession, and sustainability?
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Answer:
Explanation:
c
Answer:
Explanation:
Sorry, I answered the wrong question.
QUESTION 14
Which set of terms below are most closely associated with the immune system?
A. phagocytosis and marker protein
B. pinocytosis and channel protein
C passive transport and the nucleolus
D. diffusion and the cell wall
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Answer:
A. phagocytosis and marker protein
Explanation:
an organisms haploid number if its diploid number is 32?
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Answer:
The haploid (n) number would be 23 chromosomes found in the gametes, reproductive cells of sperm and ova. For the organism in this example the diploid (2n) number is 12 making the haploid (n) number would be half of that or 6 chromosomes
Answer:
16
Explanation:
This is because the diploid number of an organism is double the haploid number, therefore 32/2=16
wanna frend me on disc
Answers
Sure, what's your discord name and #
Find the volume of the cylinder to the nearest tenth 30 in 10 in
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Answer:
9424.78 inches cubed
Explanation:
V=πr^2h
π*100*30
Have a good day :)
human blood types result from multiple alleles. The alleles for human blood type are written as IA, IB, and i. How many different heterozygous genotypes are possible for blood types? *
a)3
b)2
c)4
d)6
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A) 3
How can pollution reduce the rate of photosynthesis? Research work (60-90 words) unnecessarily,useless answers will be reported
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Air pollution has become an extremely serious problem. Air pollutants affect both plants and animals. Under polluted conditions, plants develop different physiological, morphological and anatomical changes. Pollutants cause damage to cuticular waxes by which then they enter the leaves through stomata. This further leads to injury to plants which can be either acute or chronic. Changes in stomata due to air pollutants which seem to be small can be of great consequence with respect to survival of the plant during stress. These effects can further lead to disturbing the water balance of leaf or whole plant. Respiration also gets affected because of the exposure of plants to air pollutants. The present paper deals with the effect of air pollutants on stomata as well as on respiration leading to affect gaseous exchange.
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[tex] \huge\mathfrak\green{mark \: as \: bainliest}[/tex]
An invasive species has entered a new ecosystem. There is nothing stopping it from growing very quickly. There is unlimited space and food for them. Will their growth be exponential or logistic
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Answer:
logistic
Explanation:
im pretty sure its logistic. im so sorry if its not lol
what is the chemical equation of digestion of carbohydrates?
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Answer: Digestion of carbohydrates is performed by several enzymes. Starch and glycogen are broken down into glucose by amylase and maltase. Sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and lactase, respectively.
Explanation:
here is ur ans...
C₁₂H₂₂O₁₁+H₂O give rises to C₆H₁₂O₆+C₆H₁₂O₆+HEAT
hope it helps u....
Which set of values tells us if the reaction is at equilibrium
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Answer:
the answer is c
Explanation:
in your own words,what is the definition for vitamin?
please help me with this. im having writers block right now and i cant think.
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Answer: vitamin is
any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.
Describe two examples of chemical weathering.
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Answer:
Types of Chemical Weathering
Carbonation. When you think of carbonation, think carbon! ...
Oxidation. Oxygen causes oxidation. ...
Hydration. This isn't the hydration used in your body, but it's similar. ...
Hydrolysis. Water can add to a material to make a new material, or it can dissolve a material to change it. ...
Acidification.
Usable chemical energy on Earth begins as light energy, usually solar energy. Plants and other autotrophs convert solar energy to
Chemical energy via the process of photosynthesis. Carbon dioxide and water, in the presence of light, are transformed into glucose.
The chemical energy is stored in the chemical bonds of glucose and is released during the process of cellular respiration. Cellular
respiration releases the chemical energy stored in food molecules to produce high-energy ATP molecules. Macromolecules such as
carbohydrates and fats can be used as fuels for the production of ATP. All foods contain chemical energy, but the amount of chemical
energy is dependent of the type of food. The larger the compound, the more chemical bonds present and the greater amount of
available chemical energy. We can rank molecule size, from smallest to largest, as sugar, starch, fat. We refer to the stored chemical
energy in foods as calories. A calorie is the amount of energy required to raise the temperature of 1 gram of water 1 degree Celsius.
When we refer to the calories in food, we are really talking about kilocalories or 1000 calories. Biology students "burned" 2 grams of
food to heat water in a calorimeter in order to determine which food items contain the most usable chemical energy.
Almonds may be small, but they pack a great number of nutrients, including protein, vitamin E, and vitamin B2. Almonds also contain
antioxidants and monounsaturated fat, a "good" type of fat that, like the omega-3 fatty acids, reduces the risk of heart disease.
Review the graph that represents the whole class data. Notice that the almond samples provide a large amount of chemical energy.
What is the BEST explanation for this large amount of available energy? (1 point)
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Answer:
f0ll0w me on insta gram Id:Anshi threddy_06 (no gap between I and t)
what are soft-bodied invertebrates that usually have shells
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Answer:
Snails, slugs, squids, octopuses, clams, oysters, scallops, and mussels
The seed color of pea plants does NOT depend upon the height of the plant. Therefore, it is possible to have some yellow plants that are tall, and other yellow plants that are short. This is most likely because the height and seed color are controlled by
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is chloroplast an Organ an organelle a process an organic molecule or a building block
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Organ
Cell
Organcell
Organelle
Thats how I remember! I hope it helps!
The packing of chromatin can be regulated by either the acetylation or deacetylation of DNA.
A. True
B. False
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Answer:
B. False
Explanation:
The attraction between DNA and histones occurs because the histones are positively charged and the DNA is negatively charged.
Answer:
B is your answer
Explanation:
Humans select from among the naturally occurring genetic variations in a species in the
process of
A) natural selection
B) genetic equilibrium
C) artificial selection
D) survival of the fittest
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Answer:
A) Artificialal Selection
Explanation:
The selection is controlled by humans seeking particular phenotypes
De acuerdo al siguiente enunciado, responda: "sus funciones son similares; difieren en su origen embrionario y en su plan de construcción".
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Answer:
el enunciado hace referencia a estructuras análogas
Explanation:
La estructuras análogas (por ejemplo, órganos, tejidos, etc) son aquellas que cumplen la misma o similares funciones pero que poseen un origen evolutivo distinto (es decir, no comparten un antepasado común) y son producto de la convergencia evolutiva. Por el contrario, estructuras homólogas son aquellas que se caracterizan por tener un origen evolutivo común (comparten un antepasado común), independientemente de la función que cumplan. Las estructuras análogas se caracterizan por tener diferentes orígenes embrionarios y planes de construcción distintos (es decir, las células que dan origen a este tipo de estructuras son de linajes diferentes). Un ejemplo bien conocido de estructuras análogas son las alas de mariposas y murciélagos, las cuales cumplen la misma función pero no derivan de un antepasado común.
If a population grows by 3 percent each year, the growth of the population is
A. exponential
B. linear
c. cubic
D. logarithmic
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Answer:
A. (exponential) population
If a population grows by 3 percent each year, the growth of the population is exponential. Hence, option A is correct.
What is exponential growth?A function called exponential growth depicts an expansion within a population that happens at the same pace across time. If a population doubles or triples in size, you can assume that the data grows exponentially. Exponential decay is the inverse of exponential growth, in which data contracts rather than expands.
Bacteria are one of the best illustrations of exponential growth. Prokaryotic fission is a method of bacterial reproduction that takes around an hour. The population size of 100 bacteria would increase exponentially if we measured it every hour in a certain environment.
The population growth is exponential. Hence, option A is correct.
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choose all answers that apply
the cell membrane __.
is not a true organelle
contains and protects the cell
is made of a double layer of phospholipids
contains proteins that allow materials to pass through
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Answer:
is made of a double layer of phospholipids
What are the three differences between sugars in DNA and RNA?
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Resources management requires managing all of the following EXCEPT
air pollution.
how clean water is.
forests and woodlands.
people’s nutritional needs.
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Answer:
people’s nutritional needs.
Explanation: just took the test
All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about
vertebrates? (1 point)
O These species evolved in similar environments.
O The embryos of these species require these structures to survive.
O These species share a common ancestor.
O These species have the exact same DNA sequence.
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Answer:
These species share a common ancestor