Answer:
Compound light microscope
Explanation:
This is the ideal microscope because it requires the passage of harmless beam of light through the specimen.Since the pond contain living creatures this is best to use.
C and D both require the transmission of beam of electrons through a sample. D depends on the reflection of the electron after scanning the specimen surfaces and sent this to the lenses of the observer.(C)involved the passing of the beam of electrons through the specimen the interaction of the electrons with the atoms in the specimen(,therefore in both cases these specimens can not be wet and living.
The specimen should be dry in both cases and therefore non -living ,because the chamber for the specimen must be a vacuum,and living organism can not survive in the vacuum. Thus pond water can not be used as specimen because the specimen in the water but me be living.
Which of the following is true about the action of enzymes? *
the binding of the substrate denatures the enzyme
O substrates bind at a site remote from the active site
the binding of a substrate changes the shape of the active site so the reaction can
occur
enzymes increase the energy required to initiate the reaction
Answer:
enzymes increase the energy required to initiate the reaction
Explanation:
PLEASE HELP ME THIS IS DUE TODAY
what are the reasons for each statement?
(A) a piece of wood is not a living thing
(B) all organisms need to respire
(C) a snake is not an invertebrate
(D) A bat is a vertebrate
(E) A Mushroom is not a plant
(F) A carrot is a plant
(G) All living things need to feed
(H) All bacteria aremicroscopic organisms
(I) A virus is not a living thing
Answer:
a) A piece of wood is not alive because, once it is not part of a tree, it cannot use the energy from sunlight to grow, produce seeds, and make more pieces of wood.
Which statement about lunar eclipses is false?
Select one:
a. They occur at least twice a year.
b. They cause the moon to disappear completely.
c. They can be seen from any place with a view of the moon.
d. They may last for hours.
Answer:
B
Explanation:
The moon won't completely disappear, but it will be cast in an eerie darkness the makes it easy to miss if you were not looking for the eclipse.
explain how a farmer maintain the fertility of soil without using nitrogen fertilizerhow farmers maintain the fertility
of soil without using nitrogen fertilizer
Answer:
Answer: Hope this may help you
Ecosystem services are services that are supplied by humans for the environment.
O a. True
O b. False
Which term best describes the temperature and weather conditions of an organism’s environment? biotic factors abiotic factors natural resources natural habitat
Explanation:
Abiotic factor is the correct one.
Answer:
Abiotic factors.
Explanation:
Got it right on Edge :]
Which term describes a pure substance that is made up of only one type of atom?
Answer:
A pure substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made. Atoms show the macro properties of an element.
What is the smallest or most specific level of organisation you and your neighbors all have in common
Answer: The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
Explanation:
Answer:population
Explanation: I got it right
It is found that many insecticides - used to kill insects - lose their effectiveness after some years. What could be the cause of this?
A) The insecticides are equally effective - such myths are spread by manufacturers so that they can sell more.
B) The species targeted by the insecticide are destroyed, but new insects which are unaffected, are born.
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
D)The atmosphere contains so much of the insecticide that humans start being poisoned by it.
Answer:
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
Explanation:
It's called adaptation.
Answer:
normally, insecticides last for over 4 to 5 years before breaking into microbes, the species targeted are destroyed. A should be the answer
It has been stated that almost all energy used by organisms can be tracked back to the sun. How is this possible since some organisms are never exposed to sun.
11.
Which of these best represents a fatty-acid molecule?
H
H-C-OH
U-I
H
Η Η Η Η Η Η Η Η Η
IIIIIIIII
C-c-c-c-c-c-c-c-cc-H
IIIIIII
н нннннннн
F
H
HOCH
H-C-OH
IO-U-I
IO-O-I
HN-H
Answer:
F. Is fatty acid molecule.
Explanation:
It's unsaturated fatty acid.
Fatty acid consists of a straight chain of an even number of carbon atoms, with hydrogen atoms along the length of the chain and at one end of the chain and a carboxyl group (―COOH) at the other end.
It is that carboxyl group that makes it an acid (carboxylic acid).
which is an example of kinect energy
Answer:
A
Explanation:
Kinetic energy is the energy of mass in motion, a skateboard rolling across the street is moving, therefore it has kinetic energy.
Answer:
A: a skateboard rolling across the streetDifference between silkmoth and honeybee
Describe the stage of the cell cycle that takes place before mitosis.
The _____ stage occurs before mitosis. In this stage extra sub-______ structures are produced.
The interphase stage occurs before mitosis. In this stage, extra sub-phases like G1, S, and G2 are produced various proteins necessary for divisions.
What do you mean by Cell cycle?The Cell cycle may be defined as the process a cell goes through each time it divides.
Interphase is the initial stage of any cell cycle which is the interval between the end of one mitotic or meiotic division and the beginning of another. It is the longest phase of the cell cycle as compared to the mitotic phase.
Therefore, the interphase stage occurs before mitosis. In this stage, extra sub-phases like G1, S, and G2 are produced various proteins necessary for divisions.
To learn more about the Cell cycle, refer to the link:
https://brainly.com/question/8283140
Answer: The Growth stage occurs before mitosis. In this stage extra sub-cellular structures are produced.
classify each of the following as a stimulus or a response
a._____ the recess bell ringing in an elementary school
b._____ your mouth watering at the sight of food on a plate
c._____ a sudden drop in air temperature
d._____ a flu virus entering your body
e._____ getting “butterflies” in your stomach before giving a speech
Answer:
A- Stimulus
B- response
C- Stimulus
D- Stimulus
E- Response
Explanation:
Stimuli are what cause responses.
BRAINLIEST! Are fish mammals
Answer:
No
Explanation:
Fishes lay eggs and are not warm blooded vertebrates and don't have hair or fur
Answer:
No fish are not mammals.
Explanation:
There are 75 species of dolphins,whales and other creatures living in the ocean. they are the only mammals.
what are the SI units of measurement (in science)
Answer:
The units and their physical quantities are the second for time, the metre for measurement of length, the kilogram for mass, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity.
Answer:
in 1960 ad an international convention of metrologist suggested a same unit all over world called Si unit
Which option correctly describes the role of the nucleus in the cell?
The nucleus controls the making of proteins.
The nucleus controls the storage of food and water.
The nucleus controls the production of energy within the cell.
The nucleus controls the breakdown of old cell parts.
Functions of the nucleus:
control of the genetical information of the cell and the heredity characteristics of an organism
control of the protein and enzyme synthesis
control of cell division and cell growth
storage of DNA, RNA and ribosome
regulation of the transcription of the mRNA to protein
production of ribosomes
Answer: The nucleus controls the making of proteins.
ANSWER QUICK PLS!!!
What is the purpose of greenhouse gases?
Answer:
Image result for what is the purpose of greenhouse gases
Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO2) and methane (CH4), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place.
Explanation:
Answer:
Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO2) and methane (CH4), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place.
Explanation:
Hope This Will Helpp
Volleyball season is right around the corner and I think I need to make sure I am healthy and I want to lose some weight. I keep seeing these commercials for Special K cereal and if you eat it for 2 weeks, you will lose 10 pounds. I want to test this idea and see if it actually works. I plan on eating whatever I want for the next two weeks and am going to track my weight every morning. Then I will eat nothing but Special K cereal, milk and water for two weeks and track my weight in the morning. What do you think my hypothesis should be? What will my variables be? Hypothesis: Independent variable: Dependent Variable:
Answer:
Hypothesis: If you eat Special K cereal for 2 weeks, you will lose 10 pounds.
Independent variable: Special K cereal.
Dependent Variable: Weight lose.
Explanation:
Hypothesis: The term "hypothesis" is determined as a testable and a precise statement of what a specific researcher or experimenter predicts would be considers as the outcome of a particular study.
Independent variable: In research, the term "independent variable" is determined as a variable that is being re-organized in an experiment or research in order to see its impact on the dependent variable. Independent variable influences the dependent variable directly.
Dependent variable: The term "dependent variable" is determined as a variable that is being measured or tested in an experiment or research by the experimenter or researcher and is directly influenced by the independent variable.
All organelles float around in the _________________.
Answer:
The answer is cytoplasm.
cytoplasm
Explanation:
because its in the cell and its the main part of everything floating
what are the 3 basic components of a nucleic acid
Answer:
The term nucleic acid is the overall name for DNA and RNA. They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.
Find the median for this set of data.
10.2.
6.8
5.4
3.7
9.3
Answer:
6.8
Explanation:
least to greatest.
3.7 5.4 6.8 9.3 10.2
if there is an even number in the data set then the median is found by the mean of the two middle most.
but since it is an odd data set it is 6.8
HOPE THIS HELPS!
which type of molecule can be found in living things lacks carbon atoms
Answer:
Water.
Explanation:
Answer:
H2O
Explanation:
Fructose is a sugar molecule that is similar to glucose. It moves from a high concentration outside the cell to a low concentration inside the cell. How would fructose enter a cell?
passive diffusion
osmosis
facilitated diffusion
active transport
Answer:
facilitated diffusion
Explanation:
i just got it right
Answer:
The correct answer to this question is facilitated diffusion
Explanation:
Help me plz I need help
Answer:
The answer is C
Explanation:
Whenever a cell divides, it's always a carbon copy of the cell it originates from.
Answer:
C
Explanation:
Hummingbirds can hover in midair by flapping their wings 15-80 times per second depending on the species. Which organelle would you find an abundance of in the muscles of their wings?
Answer:
Mitochondria
Explanation:
This vigorous activity is powered by organelles known as mitochondria.
A mineral forms from water at the edge of a lake. Which statement best describes this mineral? The mineral formed from lava. The mineral formed through evaporation. The mineral formed when hot water cooled. The mineral crystallized from magma.
Answer:
The mineral formed through evaporation.
Explanation:
Minerals are inorganic substances that occur naturally i.e. not man-made. These minerals are formed in different ways in nature. One of those ways is through EVAPORATION.
Since water dissolves a lot of substances including the particles of these minerals, the mineral components can be found in a dissolved state in water bodies e.g lakes, oceans etc. However, when heat increases and the water molecules evaporate (change to gas), the dissolved minerals in these water bodies crystallize out.
This is what happens when minerals form at the edge of a lake. The water from the lake evaporates leading to the formation of minerals.
Answer:
The mineral formed through evaporation.
Explanation:
took quiz on edge2020
hope you get it right
let me know of you got it right
is exocytosis active or passive transport
Answer:
e it is a active transport
Differentiate between Carnivores and herbivores animals ? Give 2 examples.
Answer:
carnivores eat only meat and herbivores only greens meaning grass, tress, lettuce, etc
Explanation: