Answer:
The cell was first discovered in 1665 by an English scientist named Robert Hooke. While looking through a microscope, he observed tiny box-like objects in a slice of cork (bark from an oak tree) and named these boxes cells. Cells are the basic units of life, which make up all living things. This idea forms the basis of the Cell Theory. Plant cells are larger because they contain all of these structures but have some unique structures like a cell wall, vacuole and chloroplasts.
All these specialised structures are called organelles. An organelle is a tiny structure inside an animal or plant cell that has a specific function or role.
Answer:
The cell wall provides strength and support to the plant, much like the exoskeleton of an insect or spider (our skeleton is on the inside of our body, rather than on the outside like insects or spiders).
The plant cell wall is mainly made up of the carbohydrates molecules cellulose and lignin. Cellulose is used extensively by humans for making paper. Cellulose can also be converted into cellulosic ethanol, a type of biofuel. Some animals, such as cows, sheep and goats, can digest cellulose with the help of bacteria in their stomachs. Humans cannot digest cellulose, which passes through our bodies and is better known as dietary fiber, something that we should eat to keep our waste moving as it should! Lignin fills in the spaces between cellulose and other molecules in the cell wall. Lignin also helps water molecules move from one side of the cell wall to the other – an important function in plants.
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If you were a limnologist, what questions might you ask?
Explain how natural processes, like earthquakes, unearth new rock layers and fossil
Answer:
Earthquakes shake Earth, sometimes causing cracks. When Earth shakes, it moves the crust around and this could help expose new rock layers and fossils.
The study of a living being is called biology.
Earthquake is defined as any sudden shaking of the ground caused by the passage of seismic waves through Earth's rocks.
When an earthquake occurs it moves the tectonic plate and it will lead to the formation of a new place. sometimes it cracks the earth's surface which will show up what is inside it.
The study of that cracks leads to unearthing the new fossils.
The biggest crack in the earth is a marine trench.
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what makes living things and non-living things successful in their attempts to take flight?
Answer:
Any living or non-living thing trying to take flight will have two forces working against them: gravity and drag. Gravity is the force that the Earth exerts on all things pulling them back towards its centre. ... Birds also have two forces that help them in their attempts to take flight.
Explanation:
If living things and non-living things have the ability to work and resist two forces which are gravity, and drag. They will take a successful attempt in their flight.
What do you mean by Living things?Living things may be defined as creatures that have a variety of characteristics that are displayed to different degrees: they respire, move, respond to stimuli, reproduce, etc.
Birds also resist these two forces. And take a successful attempt of flight. The air resists the motion of the bird and the resistance force, is called drag. Gravity is the downward acting force that is mediated by the earth's surface.
Therefore, If living things and non-living things have the ability to work and resist two forces which are gravity, and drag. They will take a successful attempt in their flight.
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The speed of the rotation of Earth has the greatest effect on which of the following?
Answer:
?***##################
The speed of the Earth's rotation has the greatest effect on the length of a day.
What happens during Earth's rotation?
The Earth rotates once on its axis in approximately 24 hours, and this rotation determines the length of a day. The Earth's rotation speed is not constant, but it is gradually slowing down over time due to various factors, such as the gravitational influence of the moon. As a result, the length of a day has increased over geological time.
The speed of the Earth's rotation also affects other aspects of the planet, such as the distribution of ocean currents, atmospheric circulation patterns, and the formation and behavior of weather systems. However, the length of a day is the most directly and immediately impacted by changes in the Earth's rotation speed.
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Essay
Choose one item from the following list. Research the topic and then list at least five different system interactions for that topic.
Acid rain
Amazon deforestation
Drought
Flooding
Gulf of Mexico oil spill
Hurricane Katrina
Salt water intrusion
Thermal islands
Tsunami
Wind farm development
Yellowstone fires
Yucatan meteor
Jerry is planning a scientific investigation to test an idea he has about how the
growth of a pea plant is affected by soil temperature. Which step should he do
first?
A: Form the conclusion
B: Plan the experiment.
C: Create the hypothesis
D: Conduct the experiment.
Answer:
C
Explanation:
C: Create the hypothesis
Can you please tell me an explanation of what happens during the metaphase stage of mitosis?
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Please dont copy and paste
Is an apple
Protein?
Carbohydrates?
Lipid?
Answer:
Technically it's all three, an apple contains 0.5 grams of protein, 0.3 grams of fat (lipid), and 25 grams of carbohydrate. But if you're looking for majority, your answer is carbohydrate.
Which organelle/cell part is responsible for detoxing the cell. It is a network of sac and channels that transport lipids and stores ions/proteins.
Answer:
Peroxisomes
Explanation:
Peroxisome a type of organelle present in both animal and plant cells, is a membrane-bound cellular organelle that often contains enzymes.
Peroxisomes, including lipid synthesis and chemical detoxification, conduct major roles. Peroxisomes play a crucial role in particular biomolecules being oxidized. They also contribute to the biosynthesis of plasmalogens-known membrane lipids.
what are the 3 parts of the "cell theory"
Answer:
what are the 3 parts of the "cell theory
Explanation:
These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are msotly the same, both structurally and chemically; and finally, that energy flow occurs within ...
The Majority of the untied states resides in what atmospheric convection area
Answer:
Convection takes place in the atmosphere, in the oceans, and in Earth's molten subcrustal asthenosphere. Convective currents of air in the atmosphere are referred to as updrafts and downdrafts. In addition to heat transfer, convention can be driven by other properties (e.g., salinity, density, etc)
Explanation:
Convection takes place in the atmosphere, in the oceans, and in Earth's molten subcrustal asthenosphere.
What do you mean by convection?Convection is the process of losing heat through the movement of air or water molecules across the skin. The use of a fan to cool off the body is one example of convection.
Convection currents are present in the air– A good example of convection current is the warm air that rises towards the ceiling in your house. The process happens as the warm air is said to be less dense than that of the colder air.
The best description of a convection current is that e. it is the process in which warm material expands and rises while cool material contracts and falls.. Convection current in the atmosphere causes warm air to rise up from the surface.
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Which statement describes surface wave
Answer:
A surface wave is a wave that moves along the interface of two different materials, like air and water.
Explanation:
What make isle royale so different from most ecosystems?
Answer:
Isle Royale's unique ecosystem led to it being designated an International Biosphere Reserve in 1980. These isolated islands have only 19 mammal species, compared to over 40 found on the surrounding mainland. ... The ecological study of wolves on Isle Royale is the longest running large mammal predator-prey study on earth.
Explanation:
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Why do all of these different species of silversword plants look different if they diverged from 1 common ancestor?
A. Environmental conditions on the island are not the same from island to island or even on the same island. The variations that helped each to survive were therefore different, leading each to adapt to their own environment.
B.Environmental conditions on the island are not the same from island to island or even on the same island. As a result, it was random chance that determined which plants survived, leading each to adapt to their own environment in their own way.
C.They all look different from each other due to genetic drift (specifically the Founder Effect).
Answer:
I'm pretty sure the answer is A
Explanation:
Complete the equation for photosynthesis.
+ water -
+ oxygen
In light dependent reactions, light energy is absorbed and converted into chemical energy in the form of
ws
DONE
What do you notice about the path oxygen
molecules take inside the Metabolism Simulation of
a healthy body? Describe in detail.
Answer: something that i notice about the path oxygen is that anytime i eat something oxegen comes in and then after that the remaining oxegen comes out and then the lefover oxegen stay inside the respiratory system
Explanation:
The path oxygen takes inside the metabolism simulation is ; Diffusion
When we breathe in air the oxygen molecules contained in the air we breathe in move inside into our capillaries and from the capillaries into the body cells of an individual through a specific pathway known as diffusion.
As the oxygen moves into the the body cells from the capillaries the carbon dioxide ( by product ) contained in the body cells moves into the capillaries and is expelled out through the lungs.
Hence we can conclude that the path oxygen takes inside the metabolism simulation is diffusion.
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Which of the following is NOT a characteristic of ALL living things? A) photosynthesis B) consumers matter as energy c) stable internal environment (homeostasis) d) grow and develop
Answer: A photosynthesis is for plants
Explanation:
Respiration and photosynthesis have the opposite raw materials and products. These two processes are known as
- Helper processes
- Similar processes
- Coupled processes
- Complementary processes
Answer:
Complementary Processes
Explanation:
Answer:complementary processes
Explanation:
Which side or sides of the box have the same dimensions as those of a cross section parallel to side AEHD
Answer:
Sides AEHD and BFGC have the same dimensions as a cross section parallel to side AEHD.
Explanation:
Sides AEHD and BFGC have the same dimensions as a cross section parallel to side AEHD.
Answer:
part A : Sides A-E-H-D and B-F-G-C have the same dimensions as a cross section parallel to side A-E-H-D
part B: The length of the side is 3 inches, and the width of the side is 3 inches.
The perimeter can be found using this formula:
perimeter
=
2(length + width)
=
2(3 + 3)
=
2(6)
=
12 inches.
Part C:The dimensions of a cross section that is parallel to side AEHD are the same as those of side A-E-H-D. So the perimeter of a parallel cross section is the same as the perimeter of side A-E-H-D, or 12 inches.
part D: The cross section that passes through the points A, F, G, and D is the rectangle A-F-G-D.
A-F = D-G = 5 inches
A-D = G-F = 3 inches
PART E: F = D-G = 5 inches
AD = G-F = 3 inches
area of rectangle A-F-G-D
=
length × width
=
5 inches × 3 inches
=
15 square inches
Explanation:
from edmentum
Why would a change in brain size be important for the evolution of hominids as opposed to other species? (Think beyond a ‘big brain means they are smarter.’ What can you do with your brain that other organisms may not be able to?)
Answer:
Bigger brain helped our ancestor survives.
Explanation:
Change in brain size is very important for the evolution of hominids as opposed to other species because bigger brain helped our ancestor survives when the environmental conditions changed with the passage of time. They use their brain to avoid negative effects of environment change. I do a lot of things with my brain that other organisms may not be able to do that such as inventions of new technologies.
(10 points) What did meteorites bring to primitive Earth?
a
bacteria
b
viruses
c
primitive cells
d
inorganic materials
Answer:
C. Primitive Cells
Explanation:
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Why is the beak of a bird important?
The beak of a bird is important because it helps the bird eat certain foods that allow it to live. If a hummingbird did not have a long , thin beak, it would not get the flower nectar it needs. Or if a parrot did not have a large, blunt beak, it would not be able to eat hard seeds.
What effect does a limiting factor have on a chemical reaction
Answer:This states that the rate of a physiological process will be limited by the factor which is in shortest supply. Any change in the level of a limiting factor will affect the rate of reaction. For example, the amount of light will affect the rate of photosynthesis. If there is no light, there will be no photosynthesis.
Explanation:
Which is BEST paired?
a)Phloem: water
b)Xylem: sugar
c)Phloem: gas exchange
d)Xylem: water
If 1000 units of energy are available at the producer level of the energy pyramid, about how many units are available for first-level consumers? Second-level consumers? Third-level consumers?
Answer:
The next level after the producer would receive 100 units of energy.
Explanation:
The amount of energy that passes on to the next level is only 10%.
If the producers start with 1000 units, only 10% passes on. The next trophic level would have 100 units, the next after that would have 10, and so on. Only 10% of the energy is passed on into the next level.
HELP, URGENT.
My teacher is confusing and I don’t understand.
Answer:
the sugar molocule
Explanation:So in nucleotides, if its DNA it has deoxyribose for the pentose sugar and if its RNA it has ribose sugar.
Organisms are composed of many complex molecules. These molecules are
composed mainly of carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus.
Which of the following statements most accurately describes how these molecules are
made in ALL organisms?
A Organisms are composed of the molecules found in the food they eat.
B. Organisms are composed of molecules they produce from matter they take in.
C Organisms are composed of molecules they make through photosynthesis.
D. Organisms are made of molecules they build from energy.
I
A change is a single nitrogenous base can cause a mutation called which of the following
A. evolutionary mutation
B. point mutation
C. micromutation
D. zoomatic mutation
Which of the following components of an ecosystem are not abiotic factors?
A. fallen leaves
B. wind
C. small rocks
D. sunlight
Abiotic components are the non-living, chemical, and physical elements of an ecosystem that have an impact on living things and how ecosystems function, hence option A. fallen leaves is the correct option.
What are abiotic factors in the ecosystem?Temperature, light, water, and other abiotic elements of the ecosystem are examples.
The nonliving components of the environment, or abiotic influences, frequently have a significant impact on living things. Water, sunlight, oxygen, soil, and temperature are examples of abiotic variables.
Abiotic factors are non-living components of an ecosystem that influence their surroundings. Examples could be light, water, and temperature in a terrestrial habitat.
Therefore, abiotic elements in a marine ecosystem would be salinity and ocean currents. A particular ecosystem is produced by the interaction of biotic and abiotic elements.
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Look at the feet of this peregrine falcon. Explain how they help make this bird well-adapted to feed on other birds and mammals.
Answer:
The talons on the Peregrine Falcon are adapted to grasp prey and when they do this they often pierce the flesh. They are known for snatching smaller birds straight out of the air with their talons.
Explanation:
The study of changes is called evolution.
The correct answer is described below.
What is evolution?Evolution is a change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction.The talons on the Peregrine Falcon are adapted to grasp prey and when they do this they often pierce the flesh. They are known for snatching smaller birds straight out of the air with their talons.
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