Answer:
Light
Explanation:
I just took the test and got it right.
We are required to find the type of microscope would be best for studying the movement of the digestive and circulatory systems of Daphnia magna
The type of microscope which would be best for studying the movement of the digestive and circulatory systems of Daphnia magna is Electron microscope.
Daphnia magna is a small planktonic crustacean with a size of about 1.5mm - 5mm that belongs to the subclass Phyllopoda.Microscope is laboratory instrument use to examine objects that are too small to be seen with the naked eyes.The best type of microscope that can be used to study the movement of the digestive and circulatory system ofDaphnia magna is an
Electron microscope.
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Which of the following is not a type of biological contamination?
A)bacteria
B)protozoa
C)viruses
D)herbicides
Herbicides are not a type of biological contamination since they are toxic substances that are not living things.
Biological contamination is the contamination by living microorganisms that are toxic. Herbicides are not the type of biological contamination. Thus, option D is correct.
What are biological contaminations?
The contamination of the food, water, air, or soil due to harmful living organisms is called biological contamination. These microbes cause diseases and illnesses in the other species.
Viruses, bacteria, and protozoans are the biological contaminants that result in diseases and pollution. On the other hand, herbicides are chemical substances that are used to kill the pests infesting the crops.
Therefore, herbicides are not biological contaminants.
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Cells perform many functions in living organisms. Which of the following processes occur in cells? *
A:excreting wastes
B:extracting energy
C:obtaining nutrients
D:all of these
Answer:
The answer would be D
Explanation:
Answer:
B
Explanation:
b) extracting energy
Succession is always caused by natural events.
Cactus plants, which grow in deserts, have a thick waxy coating that helps prevent water loss. The plants' sharp
spines provide protection from predators. Which of the following statements best explains why cactus plants
evolved to have these traits?
Answer:
C
Explanation:
Survival of the fittest shows that plants/animals with traits better suited for survival in their environments usually pass those traits to their offspring to help them survive.
Cactus plant with these traits were better able then other cactus plant to survive and pass these traits on to their offspring.
How do cacti adapt to the desert?Stems that can store water. Widespread or very deep root systems that can collect water from a large area or from very deep underground.
Why are cactus found in desert region?Cactus is found in dry and hot areas where rainfall is minimal and the land is arid. Their leaves are evolved into thorns to prevent transpiration and they can store water inside them.
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(HELP WANTED AUTOMATIC BRAINLY) Which statement describes how the muscular and skeletal systems cause parts of the body to move?
A. When a muscle relaxes, it causes a bone to shorten.
B. When a bone shortens, it lengthens the muscle attached to it.
C. When a bone bends, it pushes a muscle in the opposite direction.
D. When a muscle contracts, it pulls a bone in one direction.
Answer:
C.
Explanation: Because when a bone does bend the muscles pull back so the bone doesnt dislocate.
The statement describes how the muscular and skeletal systems cause parts of the body to move is when a muscle contracts, it pulls a bone in one direction.
What is skeletal system?The skeletal system is the in charge of all the bones and skeleton of the body. The skeletal system provides structure and strength to the body and protects the soft tissues.
The muscular system and the skeletal system work together as the muscles and bones are connected with each other.
Thus, the correct option is D. When a muscle contracts, it pulls a bone in one direction.
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What structure is responsible for the suction created by the
starfish's tube feet?
What are non- examples of an electromagnetic wave?
Look at the photo. Explain how it shows both an individual and a community
What makes an adversarial due process system work well is that civil and legal rights of both parties are respected. True or false
Answer:
True
Explanation:
Have a great day
20 points and brainliest!
More and more often, farmers and food manufacturers are genetically modifying crops to improve flavor, reduce disease, and lower costs. Do you think genetically modifying food is a good idea? Use specific examples and reasons to support your opinion.
Explanation:
it is a good idea as it increase the life of certain food, also keeps bacteria away
An air mass that originates over land in Central America is most likely
Answer:
An air mass that originates over land in Central America is most likely warm & dry.
Explanation:
Answer:
Warm and Dry
Explanation:
A P E X answer
What is one food that contains complex
carbohydrates?
Answer:
whole grains
Explanation:
How does the waste of the pandemic relate to the biosphere?
Answer:
I think because there aren't a lot of people working, so there is no one to pick up after careless people.
That is the first thing that popped up in my head :\
:D
Please I will do anything BRAINLIEST 20 POINTS
Answer:
question 2 is newtons first law
Explanation:
3. A few years ago the population of male blue moon butterflies on the island of
Samoa declined. One hypothesis for the decline of the male butterflies is that a
parasite infected the cells of female butterflies. The parasite was passed to
offspring through the females' eggs and killed the male butterfly embryos. At
one point during the decline, nearly all the butterflies in the population were
females, but after five years the number of males in the population increased
significantly.
Blue Moon Butterfly.
Which explantion most likely accounts for the increase in the number of male butterflies in the five years after the initial parasite problem. Please anwser this
Answer:
It wont let me magnify the image srry.
Explanation:
What process is being used by the cell to move the molecules
The process that is being used by the cell to move the molecules is known as diffusion.
Diffusion is a method that has to do with the movement of substances within cells. It is also a method that's used for small molecules so that they'll be able to cross the cell membrane. It should be noted that the exchange of gas in the lungs of human beings operates through diffusion. For diffusion to take place, gaseous substances will have to go through the cell membrane in order to be able to go into a cell or out of the cell.Diffusion also takes place where there is a spread in particles. Diffusion is a movement from the region of a higher concentration to a low concentration.
In conclusion, the correct option is Diffusion.
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An ideal frictionless machine: O has very little friction O has no friction does not require work input PLEASE HELPP MEEE
Answer:
Has very little friction
Explanation:
If there isn't enough friction stuff can get out of control, but just a little is just right.
Answer:
has no friction
Explanation:
got this correct in my work
How does knowing the reactants and------help you classify a chemical reaction?
Answer:
Products!!
Explanation:
Edg 2021
Answer: Products
Explanation: Person above me is correct Edge 22
how can the amino acid sequence determine the characteristics of an organism?
Answer:
\/(*^*)\/
Explanation:
describe one piece of evidence represented by the contour line on the map that indicates the north side of chimney bluffs is steep?
Incomplete question. Attached is the image of the map below.
Explanation:
From the map, we could notice the contour lines around the Chimney Bluff areas are closely packed together. In other words, the spacing between the contour lines is narrower than those found in other locations.
This assertion is accurate because it is a standard practice in many maps to indicate the steepness of an area by having the contour lines in close proximity.
Which is common to both photosynthesis and respiration?
es
)
A
NADH is produced by Krebs cycle
B)
Chemical energy is produced in the. form of ATP
Two ATP are formed by the process of glycolysis
D)
Glyceraldehyde-3 phosphate is produced by Calvin cycle,
Matter and Ener
Hot
Answer:
the correct answer is B.
What is the range of time it takes for food to travel through the system?
(12 points)
Explanation:
it takes 24 to 72 hours in General
What will happen if the DNA is not replicated?
O Mitosis will likely not occur.
Cytokinesis will occur before
mitosis.
O Mitosis will decrease the size of the cell.
O The number of chromosomes will reduce by half during mitosis.
Answer:
The cells within living organisms have the ability to grow and reproduce through the production of new cells. In order to ensure that an exact copy of the DNA is assigned to the new cells, a process called mitosis takes place. When a new cell is needed, the DNA is copied and allocated equally to new cells; then the cell splits in half. While mitosis is a precise system for distributing DNA, it is very complex and includes many cell components that must work in concert. When any one of these intricate steps fails, the results can be adverse for the cell and the whole organism.
During mitosis, a cell divides into two identical cells referred to as daughter cells. In order for both cells to be fully functional and to be able to mature, they each need a complete set of DNA. To prevent the mutations and errors in the DNA, the process has to be extremely accurate. Usually the error rate for copying DNA is around 1-3 errors for every billion base pairs. To get this extremely exact method of copying, there are many checks that happen within the process. The DNA helix unwinds and the strands separate to allow the enzymes used in replication to do their work. If the DNA strand is found to be broken or damaged, the entire process stops until it is repaired.
This process has to occur before mitosis because once mitosis starts, the cell is already preparing to divide. Soon after it begins, microtubules are forming in order to separate the newly replicated chromosomes. The DNA replication process not only has to be completed before this point, but the DNA has to be wound back up and the two copies of the same chromosome (now connected at a point in the chromosome) have to get in position so that they can be pulled apart, each destined for its new cell.
Explanation:
Look at the punnett square above. What would be the percentage of short plants if two heterozygous plants (Tt) as seen above where to have offspring?
A. 25%
B. 50%
C. 75%
D. 100%
When do changes and
Interactions occur In The
Great Oxygenation event?
Answer:
Stage 1 (3.85–2.45 Ga): Practically no O2 in the atmosphere. ... Stage 2 (2.45–1.85 Ga): O2 produced, rising to values of 0.02 and 0.04 atm, but absorbed in oceans and seabed rock. Stage 3 (1.85–0.85 Ga): O2 starts to gas out of the oceans, but is absorbed by land surfaces. No significant change in oxygen level.
Explanation:
Sorry if it is confusing, but that is how my Biology teacher described it to me, if you don't understand, welp, neither do I, LOL.
Winter wheat is planted in the early autumn, grows over the winter when the weather
is colder, and is harvested in the spring. As the temperature drops, the composition of
the cell membrane of winter wheat changes. Unsaturated fatty acids replace saturated
fatty acids in the phospholipids of the membrane. Why is this a suitable adaptation?
Answer: It is the cell membrane will change and unsaturated fatty acids replace saturated.
Explanation:
Because unsaturated fatty acids have a kink, substituting unsaturated fatty acids for saturated fatty acids in the cell membrane of winter wheat is a suitable adaptation for the increased fluidity present in Option A.
What are unsaturated fatty acids?Cell membranes are composed of a lipid bilayer, which is made up of two layers of phospholipid molecules and consists of lipids such as saturated and unsaturated fatty acids that differ in their chemical structure, Saturated fatty acids have no double bonds between the carbon atoms in their hydrocarbon chains, while unsaturated fatty acids have one or more double bonds that provide fluidity to the plasma membrane.
Hence, substituting unsaturated fatty acids for saturated fatty acids in the cell membrane of winter wheat is a suitable adaptation for the increased fluidity present in Option A.
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The question is incomplete, complete question is below
Winter wheat is planted in the early autumn, grows over the winter when the weather
is colder, and is harvested in the spring. As the temperature drops, the composition of
the cell membrane of winter wheat changes. Unsaturated fatty acids replace saturated
fatty acids in the phospholipids of the membrane. Why is this a suitable adaptation?
A)increased fluidity
B)decreased fluidity
C)not increased fluidity
In the previous question a heterozygous female with horns mated with a male that was homoezygous recessive (no horns). What is the ratio of horned to no horned offspring?
Question 16 options:
1:3
1:1
Answer:
1:1
Explanation:
What is a cell's shape determined by?
Answer:
whether its an animal or plant cell
Explanation:
Animal cells are circular while plant cells are rectangular
Answer:
The state of the cytoskeleton, the presence of a cell wall, and the amount of water inside the cell.
Which of the following statements is true?
Opportunistic bacteria only cause infection under certain conditions.
Most bacterial infections are caused by bacteria already in the body.
Leukocytes are the first line of defense against pathogenic microorganisms.
The flu and the common cold are treated with rest, fluids, and antibiotics.
Answer:
1 one is true
2 is true
3 is falase
Answer:
a
Explanation:
Which of the following is not a factor that affects biodiversity?
a - land area
b- climate
c- diversity of niches
d- cancer fighting drugs
Answer:
B. duhhhh
Explanation: