All cells are microscopic is not a part of modern cell theory.
What are the principles of modern cell theory?Modern cell theory has three basic tenets: All organisms are made of cells. All cells only come from other cells (the principle of biogenesis). Cells are the fundamental units of structure and function in organisms.
The cell theory, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology.
The generally accepted portions of the modern Cell Theory are as follows: The cell is the fundamental unit of structure and function in living things. All organisms are made up of one or more cells. Cells arise from other cells through cellular division.
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Where are grassland ecosystems usually located?
1. in the middle of a continent, in areas that do not get large amounts of rain
2.in northern latitudes, where the summers are short and warm, but the winters are long and cold
3.near the equator, where there is plenty of rain to support their trees
4.along coastal areas, on the ocean side of mountain ranges
Answer:
B
Explanation:
Grassland biomes are in the Northern Hemisphere :)
Which statement is true for some photosynthesizing animals?
A.
Some carry out photosynthesis through the chloroplasts they incorporate into their cells.
B.
They conduct light-dependent reactions and the Calvin cycle in the mitochondria.
C.
They’re true autotrophs because they can photosynthesize on their own.
D.
They’re single-celled organisms that move like animals, but they contain chloroplasts.
Answer:
EDMENTUM
Explanation:
Normal text
2. Finish the punnett square showing a pink (RW) flower crossed with a red (RR) one.
Answer: RR R RR RR r Rr Rr Rr
Explanation:
Is music stored on a smartphone an analog or digital signal?
When the sound wave is converted to a digital signal, it can be stored and transmitted by a computer.
What are Waves?A wave is defined as a disturbance in a medium that carries energy without net movement of particles which may take the form of elastic deformation, variation of pressure, electric or magnetic intensity, electric potential or temperature.
When a sound wave is converted into a digital signal that can be stored and transmitted by a computer. It allows us to download, play and stream music from our smartphones. Analog signals can be converted to digital signals where modern computers are controlled by digital, not analog signals.
Thus, when the sound wave is converted to a digital signal, it can be stored and transmitted by a computer.
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in the process of meiosis the new cells have half the dna of the original cell why is this important to life HELP PLEASE THIS IS DUE IN 1 MINUTE
Answer:
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. During meiosis one cell divides twice to form four daughter cells.
This is because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes to make a human child.
Scientists believe that the Earth's shape is changing because of _____.
damage done to the Earth's surface by meteorites
weather patterns shifting water and soil
new land being formed by the rock cycle
changes in the Earth's elliptical orbit
Answer:
Weather patterns shifting water and soil
In photosynthesis, what gives energy to the electron moving through the electron transport chain?
A.
water
B.
NADPH
C.
light
D.
ATP
Answer:
In photosynthesis, light gives energy to the electron moving through the electron transport chain. So its C.
Explanation:
In the photosynthesis of plants, the light gives energy to the electrons passing through the electron conveyor chain. This Light energy is then transformed to chemical energy, which creates ATP; an energy storehouse molecule, and NADPH, a decreased electron transport. Moreover, light energy is utilized to elevate protons across a membrane to compose a proton-motive force.
Answer:
light
Explanation:
Why are sugars and chlorophyll in the same parts of the plant?
Answer:
Chlorophyll create the sugars through photosynthesis
By what time had most small farms in the US been replaced by large farms?
A.The Agricultural Revolution
B.World War II
C.World War I
D.The Civil War
Answer:
Small and Family Farms. More than 90 percent of farms in the U.S. are classified as small, with a gross cash farm income of $250,000, or less. These farms, most of which are family-owned and operated, confront considerable challenges due to current trends, such as increased movement into cities, an aging population, farm consolidation, and changing weather patterns.
Explanation:
hopes this helps D:
Why did lighter skin evolve near the poles? And why did darker skin evolve at the equator?
Answer:
Explanation:
Human skin color reflects an evolutionary balancing act tens of thousands of years in the making. There’s a convincing explanation for why human skin tone varies as a global gradient, with the darkest populations around the equator and the lightest ones near the poles. Put simply, dark complexion is advantageous in sunnier places, whereas fair skin fairs better in regions with less sun.
What happens to the velocity of a river when it enters another body of
water?
The velocity of a river decreases when it enters another body of water.
A river's velocity abruptly drops as it reaches a lake or ocean, for example, and the stream deposits its silt in a deposit known as a delta.
How does velocity change in a river?The Bradshaw Model predicts that a river's mean velocity, which is expressed in meters per second, will constantly rise as it travels farther along its course. This is due to the fact that as a river flows downstream, it tends to get larger, deeper, and have a higher discharge.What affects the velocity of a river?The channel's form, the slope the river travels down, the volume of water in the river, and many other factors affect a river's velocity.
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In which of Earth's atmospheric layers does weather occur?
A. troposphere
B. mesosphere
C. exosphere
D. stratosphere
Can someone help me please :( I really have bad life
Answer:
Disadvantages of Hydroelectric Energy
Impact on Fish. To create a hydro plant, a running water source must be dammed. ...
Limited Plant Locations. While hydropower is renewable, there are limited places in the world that are suitable for plant construction. ...
Higher initial Costs. ...
Carbon and Methane Emissions. ...
Susceptible to Droughts. ...
Flood Risk.
The Two Major Disadvantages of Wind Power include initial cost and technology immaturity. Firstly, constructing turbines and wind facilities is extremely expensive. The second disadvantage is technology immaturity
What is the theory of natural selection, and why does it occur in an organism? Give an example.
Answer:
It occurs in organisms because an organism with a beneficial trait/mutation have a higher chnace of surviving compared to organisms that do not. So the organsims that do survive pass on their genes to the next generation, and the bext generation will pass on those genes to the generation after and so on. But all the organisms that do not possess a beneficial trait/mutations will not survive, therefore they cannot reproduce and pass on those genes to their offspring. This means that most of the population will posses that trait/mutation.
Example: Spotted moths camouflage with bark so they are seen by predators and eaten. Black moths are easily seen by predators and are eaten. Spotted moths then pass on their genes to the next generation of moths.
Which of the following is not a feature of a plant cell?
A. Cell wall
B. Chloroplast
C. Lysosome
D. Mitochondria
Question 5
What does the word subcellular in paragraph 3 mean?
More complex than a cell
Taken away from a cell
Hidden underneath a cell
Located within a cell
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Answer:
no clue
Explanation:
Answer:
Located within a cell is a right answer. This is meaning of sub cellular.
Explanation:
3 organ systems that work together to make your body move (FREE BRAINLIEST)
Answer: Skin, Bones, and Muscles, hope this helps!
Explanation:
the formation of rock fragment and soil is most likely the result of?
1. weathering
2. gravity
3. convection cells
4. hazardous weather
The anwser is weathering.
Reason: the formation of rock fragments and soil is most likely the result of weathering.
Answer:
weathering
Explanation:
A cell biologist compared the properties of rough endoplasmic reticulum (ER) and smooth ER. She found that one type of ER is used for protein synthesis, and the other is used for lipid synthesis. What accounts for this difference?
Answer:
Explanation:
The structure of the two endoplasmic reticulum makes the difference.
Endoplasmic reticulum (ER) is located in the cytoplasm membrane in the eukaryotes and its divided into two the rough and smooth endoplasmic reticulum.
Rough ER has ribosomes which gives it the name rough because of its appearance. The ribosomes on rough ER helps it to specialize in the synthesis of proteins. proteins in a cell, are synthesize by it. The smooth endoplasmic reticulum lacks ribosome in its structure and cannot synthesize protein but lipids.
Give one example of how you classification is used at school
Answer:
classification like student and teacher?
Explanation:
have specialized tissues to transport water and nutrients
Answer:
Xylem and phloem
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here's Jay Jay cuz why not 0w0
Explain how the cell theory developed.
Explanation:
The invention of the microscope led to the discovery of the cell by Hooke. While looking at cork, Hooke observed box-shaped structures, which he called “cells” as they reminded him of the cells, or rooms, in monasteries. This discovery led to the development of the classical cell theory.
PLZ HURRY 50 POINTS!!! What is the first step in producing a vaccine against an infectious disease?
A inactivating the disease agent
B testing for vaccine side effects
C finding and isolating the disease agent
D isolating antigens
Answer: finding and isolating the disease agent
Explanation: :)
Answer: C. finding and isolating the disease agent
Explanation:
How can someone inherit a trait from their parent while the sibling does not please help me!!!
Answer:
Genetics is the study of how heritable traits are transmitted from parents to offspring. Humans have long observed that traits tend to be similar in families. It wasn't until the mid-nineteenth century that larger implications of genetic inheritance began to be studied scientifically.
Explanation:
The rough endoplasmic reticulum is a cell structure that consists of folded membranes that contain ribosomes . What is the advantage of the folded membranes ?
Answer:
The folds contain ribosomes attached to the membrane. The more the folds the more the surface area to which more ribosomes can attach. The ribosomes are organelles responsible for the manufacture of protein in cells. Thereafter, the proteins are properly folded by the mediation of chaperones in the lumen of the RER.
Explanation:
Conduction is the transfer of heat between substances with different temperatures. Heat moves from the warmer to the cooler substance through direct contact.
Answer:
True.
Explanation:
Conduction is a heat transfer method. The heat passes by direct contact between two objects. The heat will go from the object with the higher temperature to the one with the lowest one. We call this temperature gradient. If we analyze the molecular aspect of conduction, we can see that the molecules with higher temperatures have more energy so, they move more. These molecules will collide with the molecules of the other object transferring their energy. As a result, heat passes from the hottest object to the cooler one till the two substances are at the same temperature, there is thermal equilibrium.
Answer: b. Hot spring
Explanation:
Which of the following is a reason why a cell would do mitosis? *
For the organism to grow
For the organism to heal
O For the organism to replace old, worn-out cells.
All of the above are reasons why a cell would perform mitosis.
example of aquatic plants
Answer:
lotus
is an example of a aquatic plant
A total solar eclipse is visible from
Answer:
the space
Explanation:
Answer:
First, an annular eclipse, commonly referred to as a "ring of fire," passed over Africa and Asia on June 21. Then on Dec. 14, a total solar eclipse will be visible from South America. It will be the first and only total solar eclipse of 2020.
Explanation:
Explain how yeast cells can be considered single-celled organisms when they are still connected together.
Answer:
a yeast cell is a unicellular organism
Explanation:
they have a nucleus and organelles characteristic of more complex life forms. they are kind of like a plankton. they don't use cell signaling pathways like our cells would. I hope this helps. this question was a little difficult for me, but I hope I gave you enough info to help you out! :)
Yeast cells are considered single-celled organisms when they are still connected together because they are single-celled eukaryotic organisms.
What are yeast cells?They have organelles and a nucleus, features found in more complicated life forms. They resemble plankton in certain ways. Like human cells, they don't employ cell signaling pathways.
The fact that yeasts are single-celled eukaryotes means that they have organelles and a nucleus that is typical of more sophisticated life forms. When two haploid cells combine to form a diploid cell, the process of sexual reproduction is analogous to that of budding yeasts.
Therefore, yeast cells grow as single-cell organisms, though they live in colonies and are connected to each other it doesn't mean that they are multicellular organisms.
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