Answer:
C
Explanation:
Prokaryotic cells do not have any membrane-bound organelles, only eukaryotes do.
The prokaryotic cell is a simple primitive cell, unlike the complex eukaryotic cells. The absence of a membrane-bound nucleus is a characteristic of prokaryotes. Thus, option C is correct.
What is a prokaryotic cell?Prokaryotes have been the cells that have lived on earth for millions of years ago. They are made of single cells and hence are unicellular. Unlike the eukaryotic cell, they have simple mechanisms of living and reproduction.
They lack a centrally located defined nucleus that is not covered in any membrane and lies simply in the cytoplasmic material. Also, they lack organelles that make them different.
The genetic material is located in a concentrated form in a structure called the nucleoid that lacks a nuclear membrane.
Therefore, option C. the prokaryote lacks a membrane-bound nucleus.
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Activity A:
Get the Gizmo ready:
• Click Reset
• Select the FOREST tab.
Trees
Question: What role do trees play in the forest?
1. Form hypothesis: Where do you think trees get the nutrients they need to grow?
2. Predict: Based on your hypothesis, how will the tree population change if ALL other organisms (deer,
bears, and mushrooms) are removed from the forest?
3. Analyze: Remove ALL organisms except trees. Click Advance year a few times and select the DATA
tab. Was your prediction correct? Explain what you found.
4. Draw conclusions: Substances that contain carbon and are produced by living things are called
organic. Examples of organic materials are sugar, blood, protein, and fat. Other materials, like water.
Answer:
Form hypothesis: Where do you think trees get the nutrients they need to grow?
I think the trees get the nutrients from the soil and sunlight
Predict: Based on your hypothesis, how will the tree population change if ALL other organisms (deer, bears, and mushrooms) are removed from the forest?
I think they will increase dramatically because there is nothing affecting them badly.
Analyze: Remove ALL organisms except trees. Click Advance year a few times and select the DATA tab. Was your prediction correct? Explain what you found.
Yes my hypothesis was correct without the other organisms affecting the trees growth the tree population increased.
Draw conclusions: Substances that contain carbon and are produced by living things are called organic. Examples of organic materials are sugar, blood, protein, and fat. Other materials, like water, carbon dioxide, oxygen, and ammonia, are called inorganic.Some living things, called producers, can produce the organic materials they need (like food) from inorganic matter. All other organisms are consumers; they consume organic matter since they cannot make it themselves.
Do your results show you that trees are producers or consumers? Explain.
Trees are producers because they make it by using the sun's light.
Analyze: Click the FOREST tab. Click the plus (+) button for mushrooms several times. Click Advance year a few times. Select the DATA tab. How did adding mushrooms affect trees?
adding the mushrooms didn’t affect the trees.
Extend: The mushrooms thrived without hurting trees. How could this happen? Try for two possible explanations. Write your ideas in the space below.
The mushrooms are decomposers; they thrive off of dead things including the trees so they do not harm the trees at all.
Explanation:
The trees in the forest controls the flow of water on the land.
When heavy rainfall occurs the trees help in trapping the water in the soil which reduces the chances of flood. These trees also provide habitat as well as food for living organisms that lives in the forests.
The trees get the nutrients they need to grow from the soil with the help of their roots. Decomposers present in the soil feed on dead bodies which turn into nitrogenous substances that is used by the trees for making amino acids.
The tree population increases if all other organisms such deer, bears, and mushrooms are removed from the forest because these organisms feed on the trees so increase occur in the tree population.
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Why is the cycling of elements and nutrients important
Answer:
Nutrient cycles allows the transformation of matter to different specific forms that enables the utilisation of that element in different organisms. ... Therefore, nutrient cycles enable the provision of elements to organisms in forms that are usable to them. Transfer of elements from one location to another.
Explanation:
It is required for the conversion of nutrients from one form to another so that they can be used by various organisms.
What is recycling of elements?The transport and transformation of chemicals within and between ecosystems is known as element cycling, and it is a major focus area for ecosystem scientists.
Any of the natural pathways through which essential elements of living matter circulate is referred to as a biogeochemical cycle.
The term biogeochemical is an abbreviation for considering the biological, geological, and chemical aspects of each cycle.
A natural process in which elements in various forms are continuously cycled between different compartments of the environment.
Plants play an important role in several key processes that occur in the Earth's interacting systems, including the hydrosphere, atmosphere, and biosphere.
The water cycle, the nitrogen cycle, and the carbon cycle are all examples of cycles.
Thus, the cycling of elements and nutrients seems to be essentially important.
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Does the moon rotate? If so, which time frame below correctly identifies the amount of time the moon takers to make one, complete rotation.
Answer:
D} Yes, it takes about one earth month.
Explanation:
The Moon does spin on its axis a rotation once every 27 days so if theirs 29-31 days in each month it would be almost one earth moth so there for its D.
{Hope this helps} : )
In a Lake or sea breeze, the cool dense air forms over which of these? ill give brainliest
A.The water
B.The land
C.Both
D. Which ever is closer
Answer:
Sea breezes occur during hot summer days views of the unequal heating rates of land and water during the day the land surface heats up faster than the water surface therefore the air above the land is warmer than the air above the ocean now recalled that warmer air is lighter than the cool air . sorry water
Which occurs during digestion?
O The mouth only allows for physical digestion,
O The mouth only allows for chemical digestion.
O Chemical digestion prepares the food for physical digestion.
O Physical digestion prepares the food for chemical digestion.
Answer:
D
Explanation:
took test
Answer:
d
Explanation:
In the text area below describe the function of the cell wall
Answer:
The main functions of the cell wall are to provide structure, support, and protection for the cell
The cell wall is an outer protective membrane in many cells including plants, fungi, algae, and bacteria. ... The main functions of the cell wall are to provide structure, support, and protection for the cell. The cell wall in plants is composed mainly of cellulose and contains three layers in many plants.
The genetic material of an organism is made up of?
Answer: DNA
Explanation:
The genome is the entire genetic material of an organism. It is found in the nucleus of a cell, and is composed of a chemical called DNA .
The genetic material of an organism is made up of DNA and RNA.
What do you mean by genetic material?
"Genetic Material is defined as any material of plant, animal, microbial or other origin that carries genetic information and that passes it from one generation to the next. The information contained controls reproduction, development, behavior, etc."
Who discovered genetic material?
"Friedrich Miescher discovered genetic material."
What does genetic material produce?
"Genetic material produces most genes contain the information needed to make functional molecules called proteins."
What do you mean by DNA?
"DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA."
What do you mean by RNA?
"Ribonucleic acid or RNA is a linear molecule composed of four types of smaller molecules called ribonucleotide bases: adenine (A), cytosine (C), guanine (G), and uracil (U)."
What are main differences between DNA and RNA?
There are two differences that distinguish DNA from RNA:
RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and RNA has the nucleobase uracil while DNA contains thymine.To know more about Genetic material here
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WILL GIVE BRAINLIEST!!!!!!!!!!!!
Based on the graph, which inequality is correct for a number that is to the left of -4?
wordsowrdsworsdssss
Answer:
7-<4
Explanation:
3 aboictic factors and there roles in the ecosystem
Answer:
The abiotic factors in an ecosystem include all the nonliving elements of the ecosystem. Air, soil or substrate, water, light, salinity and temperature all impact the living elements of an ecosystem. I WISH I HELP
Why is it more likely that a sea cave becomes a sea arch before becoming a sea stack?
Answer:
Based on my research, I'd say it becomes a Sea arch before becoming a Sea stack due to the breaking waves erode, or wear away, the rock at sea level bit by bit, forming arches. Softer rock falls away more quickly than harder rock.
Explanation:
A sea stack is a pillar of rock that is cut off from the headland or cliff. When the waves erode the base of the sea arch, they widen it. Eventually, the roof is unable to support itself and it collapses, the former tip of the headland cut off as a sea stack.
need help, will mark brainliest.
Answer:
Key Points
Biological macromolecules are important cellular components and perform a wide array of functions necessary for the survival and growth of living organisms.
The four major classes of biological macromolecules are carbohydrates, lipids, proteins, and nucleic acids.
Which of the following is not a reason that nonnative species are reared outside their native ecosystems?
a. They are commercially important.
b. They are used to replace native species.
C. They are used for restocking programs.
d. None of the above
Answer:
D
Explanation:
All of the given reasons are reasons that nonnative species are reared outside their native ecosystems. The correct option is D.
What are nonnative species?Non-native species are animals, plants, and other organisms that do not develop natively in a region but are instead introduced through intentional or unintentional human activity.
Non-native species, unlike invasive species, do not necessarily threaten or threaten the existence of other species within the ecosystem.
Native plants and animals may go extinct as a result of invasive species, which can also decrease biodiversity, compete with native species for scarce resources, and disrupt habitats.
Ecosystems along the coast and in the Great Lakes may be severely disrupted, with significant negative economic effects.
They are employed in restocking efforts, to replace native species, and for commercial purposes.
Thus, the correct option is D.
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How are elements in the same period in the periodic table alike?
A. They have the same atomic number.
B. They have the same number of electron shells.
C. They have similar chemical properties.
D. They have the same atomic mass.
Answer:
C
Explanation:
The elements in the same period in the periodic table alike and they have similar chemical properties. Thus, option C is correct.
What is Groups and Periods in Periodic Table ?In periodic table there are 18 vertical column which is called groups which are arranged from left to right in the periodic table. In periodic table there are 7 horizontal rows which is called periods.
Elements in the same family or group have a similar chemical properties because they have the same number of valence electrons. In group one all the alkali metals have one valence electrons in the outermost shell.
Thus from the above conclusion we can say that Elements in the same family have a similar chemical properties because they have the same number of valence electrons this statement is true about elements on a periodic table in the same group.
Therefore, The elements in the same period in the periodic table alike and they have similar chemical properties. Thus, option C is correct.
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An ecosystem is defined as a collection of living things interacting with other living things
True or false?
Answer:
true
Explanation:
Answer:
TRUE is the correct answer....Thank you ☺️☺️
which part of the cell contains hereditary material
What is Creatine Kinase? What is it used for in our muscle cells?
Answer:
This test is used to find damage to muscles in your body, including your heart muscle. Creatine kinase (CK) is an enzyme found in your muscles. Enzymes are proteins that help your body's cells do their jobs. The level of the CK enzymes rises when you have damage to muscle cells in your body
Explanation:
Help!!!
What structures could you see under high power that you could not see under low power?
Answer:
The field of view is widest on the lowest power objective. When you switch to a higher power, the field of view is closes in. You will see more of an object on low power.

Northern Arizona University › lessons
Microscope Notes
The depth of focus is greatest on the lowest power objective. Each time you switch to a higher power, the depth of focus is reduced. Therefore a smaller part of the specimen is in focus at higher power.
The amount of light transmitted to your eye is greatest at the low power. When you switch to a higher power, light (and therefore resolving power, or the ability to distinguish two nearby objects as separate) is reduced. Compensate with the light control (sometimes called the iris diaphragm
hope this help! ^^
Fasttttttttttttttttttttttttttttttt 15 points
Answer:
the right answer is C.
Explanation:
cos there is an obstruction which made d voice 2 bounce back plz give me brainiest
Which genetic condition is considered a single-gene disorder?
sickle cell anemia
cystic fibrosis
type II diabetes
cancer
Answer:
Sickle Cell Anemia and cystic fibrosisl
Explanation:
Type II considered to be epigenetic condition and life style.
Cancer mutation is epigenetic too
Answer:
Explanation:
Sickle cell anemia
Reason it is a reccesive gene that has to be homogeneous before it can b m e manifested
In pea plants, the allele for round seeds is dominant to the allele for wrinkled seeds. If a plant that is heterozygous for seed type is crossed with one that has only homzygous wrinkled seeds, what percent of their offspring would you expect to have wrinkled seeds?
Answer:
50%
Explanation:
According to this question involving a gene coding for seed shape in pea plant, the allele for round seeds (R) is dominant to the allele for wrinkled seeds (r). This means that a heterozygous pea plant (Rr) will have a round seed shape.
If a plant that is heterozygous for seed type (Rr) is crossed with one that has only homzygous wrinkled seeds (rr), the following gametes will be produced by each parent plant:
Rr - R and r
rr - r and r
Using these gametes in a punnet square (see attached image), the following proportions of offsprings will be produced:
Rr, Rr, rr and rr
Rr = round seed offsprings
rr = wrinkled seed offsprings
Since 1 out of 2 offsprings has wrinkled seeds, 1/2 × 100 = 50% is the percentage of offsprings expected to have wrinkled seeds.
1) How might stem cells be a solution to paralysis caused by spinal injuries? The stem
cells could replace the nerve cells that have died as a result of the injury.
2) What are other potential medical uses?
Answer:
1. A stem cells can be defined as totipotent cells because they have the capacity to self renew themselves.
Spinal cord injury leads to loss of nervous tissue also loss of motor and sensory function, currently there is no such treatment available that can completely repair the spinal cord, but the transplant of stem cells may help in the spinal cord repair.
The stem cells could never replace the nerve cells that died as a result of the injury, stem cells can help the nerve cells to repair.
2.Other medical uses are:
To repair the damaged organs or tissues Correct the genetic defects safely testing of new drug.Which one is the correct answer?
Answer: D
Explanation: The moon is about a quarter of the size of the earth
Answer:
at first i was going to say C but now iam sure the answer is D
True or false: Through the power of Tradition and the Magisterium, the Church can contradict the teachings of Jesus.
Answer:
Explanation:
True
Answer:
False because The Curch can't contradict the teaching of jesus, contradict is just a different way of saying "deciding" so the church can't decide what should jesus is or be or anything!
HELP ME AGAIN PLZ I'M EXTRA STRUGGLIN ON THIS BIOLOGY
wait u go to the school i go to...but u must be in the high school cause my grade dont do biology unless your in 8th
Explanation:
can you hear the moon
Answer:
yes
Explanation:
Which of the following processes occurs before cellular respiration?
A) glycolysis
B) fermentation
C) ATP conversion
D) cellular respiration
1. Where might you find involuntary muscle?
In your arms
In your mouth
In your toes
In your stomach
Answer:
please mark brainliest!
Explanation:
Other involuntary muscles help digest food and are found in your stomach and intestines.
Answer:
D. in your stomach
Explanation:
Trust me i got it right its your stomach because when your stomach rumbles you don't control it, it just happens when your hungry, just and example.
explain why roks and minerals are Not the same things.
Answer:
Rocks contain minerals, but multiple kinds of minerals can be found in a rock.
Explanation:
Does plants lose/gain water during turgor pressure? How does it benefit the plant?
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