Answer:
He was the first to observe live cells in a sample of pond water with the use of a microscope.
Explanation:
Anton van Leeuwenhoek is universally known as the Father of Microbiology.
He was the first person to discover a living cell under a microscope. He discovered protozoa (the single-celled organism) and named them animalcules.
Anton van Leeuwenhoek was a significant figure in the development of cell theory with his advanced lens-making skills, which enabled him to observe single-celled organisms, bacteria, and protozoa. These observations contributed immensely to the understanding that all life is composed of cells, a fundamental concept in the cell theory.
Explanation:Anton van Leeuwenhoek, a Dutch shopkeeper, made significant contributions to the cell theory with his developments in microscope technology in the 1600s. Despite the limitations of the lenses at that time, van Leeuwenhoek's skills in lens crafting allowed him to create microscopes powerful enough to observe single-celled organisms and ever so tiny bacteria and protozoa. His discovery of what he termed "animalcules," referring to the unseen microscopic life forms, set the stage for future scientific advancements in understanding the cellular composition of life.
Leeuwenhoek's pioneering work laid the groundwork for subsequent discoveries that would shape our understanding of cells. His observations complemented those made by Robert Hooke, who coined the term "cell." Together, their work propelled the development of the cell theory, which encompasses the fundamental concept that all living things are composed of cells, cells are the basic unit of life, and all cells come from pre-existing cells. Despite the stark contrast between van Leeuwenhoek's simple microscopes and the complex microscopes of today, his efforts were instrumental in revealing a previously invisible world, a cornerstone in biology that has carried through to modern science.
When the outer electron shell is full in an element, this creates a __________ ___________
Answer:
When the outer electron shell is full in an element, this creates a Noble gas.
Explanation:
Noble gases are the elements that belong to group 18 in the periodic table. Noble gases are also called as inert gases. The outermost shell of the noble gases are fully filled by electrons. Due to this the noble gases don’t react with any other elements and remain isolated.
There are 6 noble gases in the periodic table. They are helium (He), Argon (Ar), Neon (Ne) Krypton (Kr), Radon (Rn) and Xenon (Xe). Noble gases conduct electricity. They are fluorescent, odorless and colorless. Noble gases are used a maintain stable elements in a constant and safe environment.
The pollen from one specific plant species can fertilize all different types of plants true or false
Answer:
This is true.
Explanation:
The pollen from one plant can fertilize a different type of plant, this is called cross-fertilization. This will cause a combination of both plants to be created.
In order to be considered work, the components that must be present are (2 points)
What bone creates prominence of cheek inferior and lateral to the eye?
Answer:
There are fourteen facial bones in total out of which zygomatic bone is the facial bone that creates prominence of the cheek inferior and lateral to the eye.
Explanation:
Zygomatic bone is said to be as the cheek bone which is paired and irregular in shape. It articulates with the maxilla, the temporal (to meet zygomatic process), sphenoid as well as the frontal bone of the face. It also forms the lower and lateral part of orbital margin. The maxilla and the mandible forms the upper and lower jaw.
The bone that creates the prominence of the cheek, positioned inferior and lateral to the eye, is the Zygomatic Bone. It provides an attachment site for facial muscles and helps form the structure of the face.
Explanation:The bone that creates the prominence of the cheek inferior and lateral to the eye is known as the Zygomatic Bone. This bone helps form the structure of your face and gives shape to your cheeks. The prominence of this bone can particularly be felt when you touch the part of your face directly below and to the side of your eye.
It's important for facial muscles to have an attachment site, and for the zygomatic bone it serves as an attachment for several muscles involved in facial expression and mastication (chewing). The Zygomatic bone plays an important role in our anatomy of the face.
Learn more about Zygomatic Bone here:https://brainly.com/question/33730723
#SPJ6
1. Which of the following is NOT one of the characteristics of all
living organisms?
a) able to reproduce
c) able to grow
b) able to think
d) able to metabolize
Describe at least three of the water cycle processes you have learned about in the course
Answer:
Evaporation: Water evaporates from the ocean, from the earth's surface and also by organisms, in the phenomenon of perspiration in plants and sweating in animals. Living things, especially plants.
Condensation: Water in the form of steam rises and condenses forming clouds, formed drops of water.
Precipitation: It occurs when the drops of water, which form the clouds, cool, accelerating the condensation and joining the drops of water to form larger drops that eventually precipitate to the earth's surface. Precipitation can be snow or hail or rain
Explanation:
Answer:
Through the hydrologic cycle.
Explanation:
Water moves through the hydrologic cycle in three forms: solid, liquid or gas. When the sun shines on the Earth and it’s bodies of water during the day, a process called convection causes some liquid water to evaporate into the air in the gaseous state called vapor, binding with dust particles in the air to form clouds. When the water vapor in the atmosphere reaches the point of saturation, the air cools, water condenses back into a liquid and falls down to Earth in the form of precipitation. Approximately 10% of the water from precipitation is absorbed by plants. The rest of it either collects in oceans, lakes and rivers by runoff or it percolates through many layers of sand and rock underground in the earth’s surface, until it slowly makes its way into larger bodies of water by gravity. Plants use the water they absorb for photosynthesis. Humans, animals and insects absorb some of that water when they eat plants. In the heat of the sun, water once again gets from lakes and oceans back to atmosphere by evaporation, and the hydrologic cycle repeats again by water falling as precipitation.
what is the cemical equation for photosynthesis
C6H12O6 is the chemical equation for photosynthesis.
Happy to help!
Answer: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
Carbon dioxide + water + energy from light produces glucose and oxygen.
I hope this helps you. If not, so sorry!
The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation for this event? The air pressure in that section of Earth’s atmosphere decreased. The air pressure in that section of Earth’s atmosphere increased. The total number of gas particles in Earth’s atmosphere decreased. The total number of gas particles in Earth’s atmos
Answer:
A. The air pressure in that section of Earth’s atmosphere decreased.
Explanation:
In the free air, the density of the air diminishes as the air is warmed. On increasing the pressure, the density also increases. The air is packed. The density increments as pressure increments.
The thickness and density of air decline with the increase of height because of that the surface area of the Earth's climate diminishes with increase in height, along these lines gas particles can spread out.
The density of the air is most minimal at a high rise on a hot day when the pressure of the atmosphere is low.
How is thermal energy transferred from earths core
Answer:
Heat from the Earth's core and radiation from the Sun is transferred to the surface of the Earth by conduction. Contact of the atmosphere with these warm surfaces transfers thermal energy, which then heats up the rest of the air through convection
Answer:
It is transferred to the surface of earth by conduction.
Explanation:
When a sea urchin egg is removed from the
ocean and placed in freshwater, the egg
swells and bursts. Which of these causes
water to enter the egg?
A) Coagulation
B) Sodium pump
C) Active transport
D) Osmosis
Answer:
Osmosis is always responsible for water crossing a membrane
Explanation:
What causes water to enter the egg and cause the egg to swell and burst is osmosis. Option D is correct.
Osmosis is a process that happens when the concentration of solute in one place is higher than in the other, this causes water to move towards the place with the higher concentration of solute in order to dissolve it. In this case. the situation would be:
The sea urchin egg is in the oceanThe ocean is salt water, so the egg contains water with salt in it (salt is a solute)The egg is placed in freshwater (meaning this water does not have salt)Because the water on the outside of the egg has no salt, the concentration of solute in the egg (salt), causes Osmosis to occur. Through Osmosis, water enters the egg until it swells and then bursts.Therefore, because the egg has more solute, Osmosis causes the water to enter the egg until it bursts.
To learn more visit:
https://brainly.com/question/21395644?referrer=searchResults
Excretion is best described as the removal of
1
metabolic wastes from a cell
2.
toxic wastes by the process of cyclosis
w
water molecules from dipeptide hydrolysis
undigested material from the digestive tract
Answer:
Answer is B: The Removal Of Metabolic Wastes From Cell
Explanation:
Excretion is best described as the removal of metabolic wastes from cells
Excretion refers to the process by which metabolic wastes are removed from a cell or an organism. This can include undigested material from the digestive tract. It does not include processes such as cyclosis or dipeptide hydrolysis.
Explanation:Excretion is best described as the process by which metabolic wastes are eliminated from an organism. In simpler terms, excretion is the removal of metabolic wastes from a cell. These wastes could be products of cellular metabolism like carbon dioxide or urea. It can also pertain to the removal of undigested material from the digestive tract, like fiber that our body cannot digest.
However, it does not refer to the removal of toxic wastes by the process of cyclosis, or the removal of water molecules from dipeptide hydrolysis, as these processes are more specific and separate from the general process of excretion.
https://brainly.com/question/32274304
#SPJ6
the average of 65.4, 65.3, 65.5
Answer:
65.4
Explanation:
To find the average, add all the values together and divide by the number of values (3)
[tex] \frac{65.4 + 65.3 + 65.5}{3} [/tex]
average = 65.4
Sliver
Protons 47
Neutron 61
Electrons 47
How many total particles are in the nucleus of a silver atom
Answer: Structure of the Silver Atom. The silver atom has 5 electron orbits (energy levels) with a total of 47 electrons. Beginning with the orbit closest to the nucleus and working outward, the number of electrons per orbit should be: 2, 8, 18, 18, 1. Of course, the nucleus contains 47 protons and 61 neutrons.
in the image below, what molecule is being released by cellular respiration and used in photosynthesis
Answer:
the answer is B
Explanation:
plants need carbon dioxide to be able to produce anything
The molecule released by cellular respiration is carbon dioxide.
What is photosynthesis?Photosynthesis is the process through which plants use daylight, water, and carbon dioxide to create oxygen and energy inside the shape of sugar.
photosynthesis is the method via which green flora and certain different organisms rework light electricity into chemical strength. during photosynthesis in green vegetation, light electricity is captured and used to convert water, carbon dioxide, and minerals into oxygen and power-rich organic compounds.
Photosynthesis is arguably the most vital biological method on the planet. by way of liberating oxygen and eating carbon dioxide, it has converted the arena into the hospitable environment we recognize today.
Learn more about photosynthesis here:-
#SPJ2
Which statement best explains why electrical signals in the body are often based on
ions?
Olons contain a single atom.
Olonic bonds are very strong.
lons can gain electrons.
Olons are charged particles.
Answer:
Ions are charged particles, that explains why they have either a positive or negative charge. Since electrical signals contain charges, that also explains why they are often based on ions. Your answer would be D
Answer:
lons are charged particles is the correct answer.
Explanation:
Electrical signals in the body are usually based on ions because ions are charged particles.
They produce an electrical gradient, therefore electrical signals are transferred.
The electrical signals in the neuron occur because ions flow over the neuronal layer as the Ions are the electrically charged particles.
The body requires ions to transmit the electrical impulse along the nerves.
What is the role of stomata in photosynthesis
It is because of Stomata that carbon dioxide that enters into the leaves through the stomata.
(Hope this helps
Which statement describe how starts are born
Answer:
A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion
Explanation:
Answer:
Explanation:
just adding on the other statement above....... All stars are the result of a balance of forces: the force of gravity compresses atoms in interstellar gas until the fusion reactions begin.
Jordan is an animal lover and wants to protect animal species and their habitats. A career in which field would allow him to do so? A. research B. wildlife conservation C. education D. pathology
vet science
Answer:
B. wildlife conservation
Explanation:
Answer:
The answer you are looking for is B, wildlife conservation. This is because you can eliminate research and education because both of those answers don't do much in protecting animal species. You can also eliminate Pathology since Pathology for animal injuries.
Explanation:
Identify the the correct base pair
AT
CA
AG
GT
Final answer:
The correct base pair is AT (adenine-thymine), as per DNA base pairing rules where A pairs with T, and C with G.
Explanation:
The correct base pair among the given options is AT (adenine-thymine). In DNA, the nucleotide bases pair up with each other following specific rules: adenine (A) always pairs with thymine (T), and cytosine (C) always pairs with guanine (G). This is known as the base-pair rule, a fundamental principle in the structure of DNA. These base pairing rules are crucial for the conservation of the genetic information during cell division and replication processes.
What is a hypothesis?
A. A conclusion that you make about an experiment
O
B. The way an experiment is performed
C. The technology used in an experiment
O
D. An educated guess of the answer to a question
Answer:
d
Explanation:
Which components of a virus is lacking a cell
Answer:
protein capsid
Explanation:
virus is a disease causing agent containing a protein capsid which is made up of protein called Capsomere. The capsid contain the genetic information or material of virus.
Virus which do not contain envelop is called naked virus.
the uses of capside are to protect the genetic material, transfer the genome and interaction with host cell.
when molecules are even throughout a space,it is called
Answer:
Equilibrium
Explanation:
When the system is in equilibrium, this means there is no further change in the system because the opposing forces (forward & reverse), such as those in diffusion, are at balance and therefore there seems to be stability. Usually this is when the system is at its highest entropy of lowest Gibbs free energy.
It is possible to calculate the equilibrium constant of a reaction aA+bB⇋cC+dD
Kc = ([C]^c*[D]^d) /( [A]^a*[B]^b)
The term used to describe when molecules are even throughout a space is equilibrium.
When molecules are evenly distributed throughout a space, it is called equilibrium. In chemistry, equilibrium refers to a state where the forward and reverse reactions occur at the same rate, resulting in a constant concentration of molecules in the system.
For example, consider a container divided into two compartments by a permeable barrier. Initially, molecules on one side may be more concentrated, but over time, they will diffuse and spread equally in both compartments, leading to equilibrium.
This concept is significant in many chemical processes, such as the reaction rates, solubility, and phase changes.
Learn more about Equilibrium here:https://brainly.com/question/33747437
#SPJ12
Which organelle is present in the cells of a mouse but not
present in the cells of a bean plant?
A.
cell wall
B.
chloroplast
C. cell membrane
D.
centriole
Answer:
D) centriole
Explanation:
nave a good day {:
The organelle present in mouse cells but absent in bean plant cells is the centriole. This is because centrioles are usually found in animal cells and have a primary role in cell division. Plant cells typically lack these organelles and use different mechanisms for cell division.
Explanation:The organelle that is present in the cells of a mouse but not present in the cells of a bean plant is the centriole. Centrioles are cellular structures involved predominantly in cell division processes like mitosis and meiosis, and are typically found in animal cells. Plant cells, such as those in a bean plant, commonly lack these organelles because they have other mechanisms to handle cell division.
All cells, whether they are plant or animal, have a cell membrane. Chloroplasts are found in plant cells for photosynthesis but are absent in animal cells. A cell wall is a characteristic organelle of plant cells, and is not found in animal cells. Therefore, answer option D, centriole, is the correct answer.
Learn more about Cell Organelles here:https://brainly.com/question/29776469
#SPJ3
What is vegetative propagation?
Answer:
A type of asexual (only 1 organism needed in the process, only 1 parent) reproduction found in plants.
Explanation:
Vegetative propagation consists in the sharing of a stalk/root/other to form a new plant. So basically what happens is that a stalk/root/other from a parent plant is "left apart" so that a new organism can rise from it.
Some plants have parts that are used exclusively during vegetative propagation.
Hope it helped,
BiologiaMagister
Image: Agri Farming
VEGETATIVE PROPAGATION
regeneration of new plant from the vegetative part or organ of the parent plant is called vegetative propagation vegetative propagation is useful to spread the plant in wider reason once a mother plant gets favourable condition it is then colonized to the reason of by vegetative propagation the offspring obtained by vegetative propagation are adapted to those condition to mother plant
NATURAL VEGETATIVE PROPAGATION
BY ROOT
the intact root of several Woody plants such as it see which grow just below the soil produce but shoot just below the soil produce Adventist but should develop from these but which give rise to new plant
BY STEM
stamp is time is the source of natural vegetative reproduction and propagation in several plant several modification are found in system to perform vegetative propagation
runner offset stolon
BY LEAVES
plant develop budon their leaves these but after separating from Mother plant give rise to new plant a plant let's are produced on the margin of leave begonia is example
BY BULBILS
they are fleshy Birds which are produced in the axills of the leaves in the auxiliary Bud
ARTIFICIAL VEGETATIVE PROPAGATION
GRAFTING
adopting is the most common method of vegetative propagation in this matter variety of same is spice can be converted into plant of superior Variety in the technique that tricks of to plant our joints that you ate that grow portion of one plant stock is each joint another plant called scion
BUDDING
it is the modern method of plant propagation in this method modification of grafting but of plant is Variety is grafted on the stem of plant variety after making an oblique cut
LAYERING
the method of inductor root formation the branches while they are still attached to the mother plant is called layering
Which organelles are replicated during G1 phase, and which during G2?
Some sources state that, depending on the organelle, both phases include organelle replication.
Answer:
G1 involves cell growth an protein synthesis, G2 involvesfurther growth and protein synthesis
Final answer:
In the G1 phase, cells grow and begin the process of organelle replication while in the G2 phase, cells continue to grow, replicate some organelles, and prepare for mitosis by synthesizing proteins and providing resources for the mitotic spindle.
Explanation:
The G1 phase of the eukaryotic cell cycle is characterized by cell growth, where the cell increases in size and organelles begin to replicate in preparation for cell division. This phase involves routine metabolic processes and making proteins needed for DNA replication.
During the G2 phase, the cell continues to grow and makes further preparations for mitosis. It is during this phase that the cell replenishes its energy stores, synthesizes proteins necessary for chromosome manipulation, and duplicates some of its organelles. The cytoskeleton is also dismantled to provide resources for the mitotic spindle. This phase ensures that the cell's machinery is ready for the subsequent mitotic phase where the nucleus and the cytoplasm will be divided during mitosis and cytokinesis.
A particular ant species has four pairs of chromosomes. Identify the genetic possibilities from independent assortment of a gamete.
Answer:
Here, no of pairs of chromosomes in ant = 4.
Now during the gametogenesis, each pair of chromosome will get separated in one gamete each.
So, number of unpaired chromosomes = 4 unpaired chromosomes.
The gametes are now haploid, i.e. Without paired chromosomes.
Now, only 1 of the one pair of chromosomes will be carried inside a gamete,
Lets assume, the gene present in the cell chromosomes is heterozygote
So, there will be 2 possibilities.
So, their probability will result as [tex]=2\times2= 4[/tex]possibilities.
Then for 4 chromosomes would be [tex]4^4=256[/tex] chromosomes.
Answer:
The total number of possibilities for four chromosomes would be 4^4 = 256 possibilities in the gamete or offspring.
Explanation:
Given,
Organism – Ant species
Number of chromosomes = 4 pairs
Genetic possibility due to independent assortment = ?
Solution:
During the gamete formation, only one chromosome from a pair foes to the gamete as meiosis occurs. Therefore, the gamete will have only 4 chromosomes instead of 4 pairs. The gamete can get any of the two chromosome from a pair and thus, it has 2X2 = 4 possibilities.
Therefore, total number of possibilities for four chromosomes would be 4^4 = 256 possibilities in the gamete or offspring.
Which goes in which plz help me 20 points and brainliest.and a photo of my dog
Answer:
cute dog!!!
Explanation:
i'll do my best....
CAUSE EFFECT
sudden decrease in decrease in
clown fish population anemone population
____________________________________________________________
sudden decrease in sudden increase in chipping
giant Triton population sparrow population
____________________________________________________________
sudden increase in hermit sudden decrease in
crab population clown fish population
Which statement correctly compares nucleic acids and carbohydrates? A)They both contain phosphorus, but only nucleic acids contain hydrogen.B) They both contain carbon, hydrogen, and oxygen in a 1:2:1 ratio. C)They both contain carbon, but only carbohydrates contain oxygen.D) They both contain carbon, but only nucleic acids contain phosphorous
Answer:
D)They both contain carbon, but only nucleic acids contain phosphorous.
Answer:
it is D)
Explanation:
What Made Albert Einstein Smart
Answer:
he was considered a genius because of his helpful contribution I science and math
Albert Einstein's intelligence stemmed from his deep curiosity, rigorous thought experiments, and the ability to challenge existing norms, which led him to revolutionize physics with his theory of relativity.
Explanation:What made Albert Einstein smart is a question that delves into various facets of his personality, his intellectual curiosity, and his approach to scientific inquiry. Einstein, renowned for his theory of relativity and as a symbol of high intellect, attributed his success not just to his intelligence but also to his persistent curiosity and the ability to question the obvious. Albert Einstein was not content with accepted norms and displayed an unparalleled dedication to understanding the mysteries of the universe.
From a young age, Einstein showed a proclivity for clear thinking and thought experiments ('Gedankenexperiment'), a method he employed to conceptualize and solve complex problems before they could be tested experimentally. His ingenious use of deductive reasoning and intuitive insight, coupled with his deep knowledge and experience, allowed him to challenge and eventually revolutionize modern physics with his theory of relativity.
Einstein's intellectual journey highlights the importance of not just raw intelligence, but a relentless pursuit of knowledge, a robust imagination, and a fearless approach to challenging the status quo. His legacy teaches us that brilliance is as much about the questions we dare to ask as it is about the answers we discover.
What is the purpose of Mitosis In single-celled organisms
Answer:
Unicellular organisms would divide as a means of reproduction. Generally unicellular organisms are some form of prokaryote in which case they wouldn't/can't preform mitosis but instead they would undergo binary fission.