Answer:
A. Cell wall
Explanation:
The cell wall is only found in plants, and is what gives the plant it's structure. This is why it is "Stiff" and "Protective"
I hope this helps!
When grey wolves were reintroduced back into Yellowstone
Answer:
1995
Explanation:
Grey wolf packs were reintroduced to Yellowstone National Park and Idaho starting in 1995.
hope it helpful
Bart thinks mice exposed to microwaves will get stronger (maybe he's been reading too much Radioactive Man). You decide to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to 10 other mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse's food. found that 8 out of 10 of the microwave mice were able to push the block. 7 out of 10 of the mice without microwaves were able to do the same.
identify
1. control group
2. independent variable
3. dependent variable
4. what are some of the mentioned control variables?
5. what should bart's conclusion be?
Answer:
Control group = mice that had not been exposed
Independent variable = Mice receiving radiation
Dependent variable = Number of mice that are able to push the block of wood.
Control variables = Health of mice, mass of block
Radiation does not have effect on strength of the mice
Explanation:
In an experiment the variable which changes with respect to the other variable is called the dependent variable and the other variable is called the independent variable.
The control group is the group that does not receive treatment which is used to compare the effect of the treatment.
The control variable is another variable that must be held constant when performing the experiment.
Here the
Control group = mice that had not been exposed
Independent variable = Mice receiving radiation
Dependent variable = Number of mice that are able to push the block of wood.
Control variables = Health of mice, mass of block
It was found that 8 out of 10 of the microwave mice were able to push the block. 7 out of 10 of the mice without microwaves were able to do the same. This means that there was no significant difference hence, the conclusion drawn should be that radiation does not have any effect on their strength.
What is the answer to this question
Answer:
C
Explanation:
Because chromosomes come in pairs, if they weren't in pairs you'd have 46, but since they arent separated its 23. So, the answer is Homologous pairs
Hope this helps!
please help im rlly stuck
Answer:
c
Explanation:
How Fast can you answer how fast can i give you brainliest????? HELP...
Answer:
Explanation:
I think it's b or d may a
Answer:
The answer is C: Pond
Explanation:
its definition is the closest to the question: a small body of still water formed naturally or by hollowing or embanking.
I deeply apologize if this is incorrect.
I hope this helped and if it did I would appreciate it if you marked em Brainliest. Thank you and have a nice day!
list the symbol for lipids
Answer:
Carbon, Hydrogen and Oxygen. So the symbol is CHO.
Explanation:
Which best describes the relationship between two species and a niche?
Explanation:
If two species have the same niche, one species will always become extinct. Two species are able to occupy the same niche in the same habitat.
distinguish between a mixture and solution
Answer:
In mixtures substances are mixed. While in Solutions substances are dissolved.
Explanation:
in mixtures substances arent typically dissolved they are combined or mixed. in a solution those substances dissolve.
A cell removes a toxin it has produced through a chemical reaction. Which characteristic of living things is the cell demonstrating?
the ability to maintain homeostasis
the ability to maintain homeostasis
the ability to grow and develop
the ability to grow and develop
the ability to adapt and evolve
the ability to adapt and evolve
the ability to reproduce
Answer:
Sweating helps the human body maintain homeostasis by cooling the body when it starts to overheat so the internal temperature is kept more or less the same. When sweat evaporates from the skin, it uses up some of the excess heat energy on the skin, thus helping to keep the body cool.
According to cell theory, all living things are made of cells, and living cells come only from other living cells. Gene theory states that the characteristics of living things are controlled by genes, which are passed from parents to their offspring.
Sample answer: The concentration of oxygen in the atmosphere is maintained at 21 percent by a balance between two opposing processes: removal of oxygen from the atmosphere by most living things and addition of oxygen to the atmosphere by living things such as plants.
Sample answer: The human ability to sweat is an adaptation that helps maintain homeostasis in a hot environment by removing heat from the body when it evaporates. Like other adaptations, the ability to maintain homeostasis by sweating evolved by natural selection sometime in our evolutionary past.
a. Gene theory
b. Homeostasis
B
An adaptation is a trait that helps a living thing survive and reproduce in a given environment. Sample example. The chameleon’s ability to change color to match their background is an adaptation.
False
False
Humans began life as a single cell because we develop from a fertilized egg cell.
Gene theory states that genes are passed down from parents to their offspring. Genes determine the characteristics or traits of an organism. If these traits are particularly beneficial or adaptive, natural selection will cause the organisms with beneficial traits to produce more offspring compared to those without the beneficial traits. This results in a change in traits over time, which is called evolution.
No. Evolution is defined as a change in the characteristics of living things over time. Evolution through natural selection causes differences in the amount of offspring produced. Having offspring (or not) is, by definition, more than one generation.
Sample answer. I think that when ancestors of chameleons could change their color to match their background, they were less likely to be detected and killed by predators than those that couldn’t change their color. Therefore, the individuals that had the color matching ability were more likely to survive and reproduce than those that didn’t. This is an example of natural selection. Over time, this led to the population evolving the color changing ability, as those that didn’t have the ability died out.
Explanation:
i hope this helped you
Marine dead zones can form when nutrient run-off causes certain types of algae to grow very quickly and then die off. As dead algae decompose, oxygen is removed from the water. With less oxygen available, fish and other marine animals can die. What would be one practical way to reduce marine dead zones?
A: Add bacteria that are able to eat the fast-growing algae.
B: Harvest marine fish in dead zone areas to reduce oxygen use.
C: Pump oxygen into the water using equipment on fishing vessels.
D: Prevent fertilizer and other wastes from entering rivers and streams.
Answer:
The answer is D.
Explanation:
The practical way for reducing the marine dead zones should be that it prevented the fertilizer.
What is fertilizer?It is the type of natural material or the synthetic origin that should be applied for soiling or to plant tissue for supplying the nutrient of the plants.
It should be distinct from material liming for non-nutrient soil amendments.
Therefore, we can conclude that the option d is correct.
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How is energy related to the change of state represented by the model?
A. Atoms gain energy as a gas changes in a solid.
B. Atoms gain energy as a gas changes in a liquid.
C. Atoms lose energy as a gas changes in a solid.
D. Atoms lose energy as a gas changes in a liquid.
Answer:
C.
Explanation:
Atoms lose energy as a gas changes in a solid
hope it helps!
What is the chemical equation that shows the dehydration synthesis that creates the following
triglyceride? Two of the fatty acids are С6H12O2 and the third is C5H8O2.
2CH3-CH2-CH2-CH2-CH2-COOH + CH3-CH=CH-CH2-COOH
+ OH-CH2-CH(OH)-CH2-OH-->
PLEASE HELP ASAP WILL DO 20 POINTS NOW AND WILL ADD MORE 50 LATER IF THE ANSWER IF WHAT IM LOOKING FOR
EXPERIMENT: TISSUE STRUCTURE
OBJECTIVES
Observe different types of cells.
Use the microscope. These supplies and equipment are needed:
prepared slide of muscle tissue
prepared slide of some internal organ such as the kidney, liver, or heart
prepared slide of erythrocytes, or leukocytes (from blood)
Follow these directions and complete the activities.
1. Place one of the prepared slides of animal tissue on the stage of the microscope.
2. Focus the microscope on low power. Then change to the high power objective. Focus on the tissue, and note the cells.
3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.
What do you think the function of this cell might be?
4. Repeat Steps 1 and 2 using the other prepared slides.
5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.
What do you think the functions of the other cells drawn might be?
If all of the different kinds of cells which you observed had been taken from the same organism or individual, would they have all had the same genetic information?
Consider specialization: What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?
Why is it important?
Answer:
Its the flagem
Explanation:
Answer: 434 words total. Left two questions blank (they are underlined) so youll probs need to fill it in. I also suggest putting it into your own words so if they run it through a plagerism checker this doesnt pop up. I hope this helps tho.
Introduction:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
Materials:
• Microscope
• Prepared slide of muscle tissue
• Prepared slide of some internal organ such as the kidney, liver, or heart
• Prepared slide of erythrocytes, or leukocytes (from blood)
Instructions:
1. Place one of the prepared slides of animal tissue on the stage of the microscope.
2. Focus the microscope on low power. Then change to the high-power objective. Focus on the tissue, and note the cells.
3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.
-What do you think the function of this cell might be?
4. Repeat Steps 1 and 2 using the other prepared slides.
5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.
Questions:
What do you think the functions of the other cells drawn might be?
- (i think this differs on person to person so may need to do it yourself)
If all of the different kinds of cells which you observed had been taken from the same organism or individual, would they have all had the same genetic information?
- Yes, the cells will have the same genetic information. However, the particular combination of genes that are turned on (expressed) or turned off (repressed) dictates cellular morphology (shape) and function. Essentially meaning that though the cells share the same genetic information they do not necessarily share the same functions.
Consider specialization: What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?
- Though these cells have the same DNA, they all have different phenotypes. The phenotypes are different because the cells appear different under the microscope. The cells do this by expressing different genes at different rates. For example, the blood cell is expressing the gene to make hemoglobulin while the other cells are probably expressing different genes that allow them to be specialized. Cells differentiate which means that they are becoming more specialized. Epigenetics focuses on how cells become more specialized.
Why is it important?
- This is important because it allows different parts of the body to carry out their crucial functions necessary for the whole body to run properly.
Which of the following is an example of genetic engineering?
The sweetest honeydew melons are selected and the seeds extracted and planted for next year’s crop.
The strongest animals in a population survive and reproduce.
An exact replica of a frog is created from a body cell.
A gene is introduced into salmon to make them grow twice as fast.
Is this rock Felsic or Mafic or
In between
What cellular process does a mitochondrion perform for the cell?
Answer:
Cellular Respiration.
Explanation:
Can someone please help me this is Biology in 7th Grade
Which group makes up the largest level of a trophic level pyramid?
Answer:
primary producers
Explanation:
np ;)
Anaerobic respiration is also known as?
Answer:
Intramolecular respiration
Explanation:
I think sorry if i'm wrong
It is also called as the fermentation. It is the kind of respiration which helps the cells to breakdown energy in the absence of oxygen.
What is the other type of respiration called as ?It is called as the aerobic respiration which takes place in the presence of oxygen.
Anaerobic that stands for without oxygen.This is the method of the cellular respiration where it does not basically require the oxygen in order to generate the energy. For the smaller animals for breathing , here is no enough oxygen present so that they will need energy for surviving in absence of oxygen.
Anaerobic respiration is the process in which the cells just break down into sugars just to produce out energy in the absence of oxygen. The respiration is called as fermentation. it mainly takes place in yeast cells, bacteria, and muscle cells of animals.
Learn more about fermentation at :
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What is the difference between mutation that occur on somatic cells and sex cells?
Answer:
Somatic mutations – occur in a single body cell and cannot be inherited Germline mutations – occur in gametes and can be passed onto offspring
Explanation:
Please Help!!! Which two body systems are most affected when a person is participating in a long jump?
A. endocrine and digestive
B. endocrine and muscular
C. skeletal and digestive
D. skeletal and muscular
The two-body systems that are most affected when a person is participating in a long-jump are skeletal and muscular (Option D).
The muscular system is composed of three different types of muscles: smooth muscle, cardiac muscle and skeletal muscle.The skeletal muscles are muscles responsible for controlling voluntary movements (e.g., jump) and they are attached to the skeleton by a type of connective tissue known as tendon.The skeletal system is composed of all bones of the body and they are responsible to provide support and protection to the internal organs.In conclusion, the two-body systems that are most affected when a person is participating in a long-jump are skeletal and muscular (Option D).
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. Which of the following describes the healthiest ecosystem? *
a. An ecosystem that has low biodiversity
b. An ecosystem that has high biodiversity
c. An ecosystem that has many more producers than any other trophic level
d. An ecosystem that has many more herbivores than any other trophic level
e. Answers B and C
Answer:
The Answer is E. Answers B and C
Explanation:
Answer:
e) Answers B and C
Explanation:
aka the 5th option
BRAINLIEST IF CORRECT I NEED HELP FOR BETTER GRADES 65 POINTS
Which of the following is not a part of a vascular plant?
A.stem
B.roots
C.rhizoids
D.leaf
Answer:
rhizoids are not part of a vascular plant
Match the type of metamorphism to its cause.
Answer:
Contact - Heat
Dynamic - Directed Pressure
Impact - Meteorite
Regional - Surrounding
If a pure-bred tall plant is crossed with a pure-bred short plant, the offspring will be:
a. Either tall or short
b. All offspring will be medium sized.
c. Some offspring will be tall, some will be short and some will be medium sized.
Fill in the missing mRNA bases sequence that corresponds to the DNA base sequence - CAC GTG GAC TGA
Fill in the missing amino acid sequence that corresponds to the DNA base sequence CAC GTG GAC TGA
Answer:
mRNA: GUG CAC CUG ACU
amino acids: VAL HIS LEU THR
Explanation:
The missing RNA base sequence to the DNA base sequence: CAC GTG GAC TGA is GUG CAC CUG ACU respectively.
The missing amino acids to the DNA base sequence CAC GTG GAC TGA is VAL HIS LEU THR respectively.
What are amino acids?Amino acids are organic compounds made up of amino and carboxylic groups.
Amino acids are the primary building blocks of protein.
There are 20 amino acids are present.
Thus, The missing RNA base sequence to the DNA base sequence: CAC GTG GAC TGA is GUG CAC CUG ACU respectively.
The missing amino acids to the DNA base sequence CAC GTG GAC TGA is VAL HIS LEU THR respectively.
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lol pls help i really need help
A dry beaker has a mass of 55.0 g. When 50.0 mL of water is added to the beaker, the mass of the water and the beaker is 105.0 g. What is the density of the water?
A specieces that impacts the survival rates of another species in an ecosystem is known as
a
niches species
b
extinct species
c
endangered species
d
keystone species
One cause of muscle soreness during exercise is
Answer:
Over-straining yourself or changing workouts routines
Explanation: