Answer:
Diploid microspore mother cells divide by meiosis to form four haploid microspores. Each microspore develops into a pollen grain by mitosis.
Explanation:
Pollen grains contain the male gametes of a sexually reproducing plant. Pollen grains are haploid cells in nature produced by the meiotic division of microspore mother cells (located in the anther). The meiosis of these diploid (2n) microspore mother cells give rise to four haploid microspores. This process in plants is called microsporogenesis.
Each haploid microspore (n) develops into pollen grain called microgametophye (bearing male gamete) via mitotic division. During the pollen grain formation, a wall is formed around the microspores.
Explain why circulatory problems often occur with people who are bedridden or with inactive people who seldom use their muscles.
Nicholas has been biting his nails since he was a kid. He wants to break the habit so he puts bitter-tasting nail polish on his left hand and leaves his right hand without polish. After 3 days he notices his nails on his left hand have grown but he continued to bite his right-hand nails.
A. Independent Variable=
B. Dependent Variable=
C. Control=
Answer:
Independent: Putting the nail polish
Dependent: nail growth
Control: right hand, without polish
The experiments are known to have various variables. In Nicholas's case, nail polish is an independent variable, nail growth is a dependent, and right nails without polish are a control.
What are independent variables?Independent variables are defined as the test variables that in an experiment are not constant but are kept varied and manipulative causing various effects on the result of the hypothesis. Putting the bitter nail polish on the nails of the left hand is a test variable.
The dependent variable (outcome variables) along with independent results in cause and effect and are conditional on the independent factors. The length of nails is dependent as it is affected by the nail-biting.
On the other hand, the control variables are constant in that the factors are limited so that they do not interfere with other factors that affect the outcome. Fingernails on the right hand with no polish are controlled.
Therefore, nail polish is an independent variable.
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Bart has to babysit Maggie for several nights in a row during summer vacation and makes a bet with that Taylor Swift music will get Maggie to Bart gets out the CD collection and when Maggie cries the first night, he plays The second time he plays /DC and rocks out, but she doesn't stop crying. The third time he plays Taylor Swift. When he plays Taylor Swift, Maggie immediately and starts to smile. What is the independent variable? What is the dependent variable? What is the hypothesis?
Answer:
independent variable: the cd Bart plays
dependent variable: whether Maggie stops crying
hypothesis: if Bart plays Taylor Swift, then Maggie will stop crying.
Which most accurately describes the basis of the scientific method? A.) a path of clearly defined steps that must be followed in a particular order B.) a possible answer to a scientific question based on knowledge or research C.) the recipe for how to conduct an experiment that must be followed precisely D.) the process of hypothesis and testing through which scientific inquiry occurs
The statement 'the process of hypothesis and testing through which scientific inquiry occurs' most accurately describes the basis of the scientific method.
The scientific method is a series of sequential steps used to build scientific knowledge.The steps of the scientific method include:
To make observations about a given phenomenon of the natural world and formulate questions based on these observations.To pose a plausible explanation (i.e., a hypothesis) in order to answer these questions.To test the working hypothesis by experimental and/or observational procedures.To collect data in order to confirm or reject the working hypothesis.Examine results and draw conclusions.In conclusion, the statement 'the process of hypothesis and testing through which scientific inquiry occurs' most accurately describes the basis of the scientific method.
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Why is a steam burn more severe than a hot water burn?
Answer:
Steam burns are more severe because of the latent heat of vaporization.
Which of the following is an example of a prokaryotic cell? A. an animal cell
B. a protist cell
C. a bacterial cell
D. a plant cell
Answer:
C. a bacterial cell
Answer:
A bacteria cell is prokaryotic
There are 12 apples 14 oranges and 16 bananas in a fruit basket.what is the ratio apples to bananas
Answer:
12:16
Explanation:
Which event is an example of a living thing responding to a stimulus?
A. A rock makes a loud sound as it falls down a cliff.
B. The temperature rises during the day.
C. The wind blows the roof off a house during a storm.
D. A houseplant grows toward the window.
Answer:
D. A houseplant grows toward the window.
Explanation:
All of the other answers are examples of nonliving things. A houseplant, however, is alive, and moves towards the window because it can receive more light.
Explain how plastic can be both beneficial and detrimental at the same time.
Answer:
Some benefits of plastic are that plastic packaging helps protect and preserve goods, while reducing weight in transportation, which saves fuel, reduces greenhouse gas emissions and are low in cost.
Some disadvantages are that toxic chemicals can leach out of plastic and can be found in the blood and tissue of nearly all of us. Exposure to them is linked to cancers, birth defects, impaired immunity, endocrine disruption and other ailments
Jenna took an open bowl of leftover mashed potatoes from the refrigerator and noticed a difference in smell. She determined that chemical changes occurred since the potatoes were first placed there. Which observations most likely led to Jenna’s conclusion? a change of odor a decrease in temperature a change in moisture content a decrease in mass
Answer:
its a on ed
Explanation:
The observation that most likely led to Jenna’s conclusion is a change of odor. Thus, the correct option is A.
What are Chemical changes?Chemical changes may be defined as those changes through which one chemical substance gets transformed into another chemical substance. This occurs in a variety of steps and types.
A difference in the smell of leftover mashed potatoes indicates the change in odor which is observed by Jenna.
A decrease in temperature, a change in moisture, and a decrease in mass do not make any sense with respect to difference in smell.
Therefore, the observation that most likely led to Jenna’s conclusion is a change of odor. Thus, the correct option is A.
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By what factor (how much) does the milli- unit differ from the centi- unit?
earth science
Answer:
By a factor of 0.1.
Explanation:
Hello,
In this case, since the milli- unit has a factor 0.001 and the centi- unit a factor of 0.01 we can apply the following division in order to compute by what factor they actually differ from:
[tex]\frac{milli}{centi}= \frac{0.001}{0.01} =0.1[/tex]
It means that the milli- unit differ from the centi- unit by a factor of 0.1. Conversely, the centi- unit differ from the milli- unit by a factor of 10:
[tex]\frac{centi}{milli}= \frac{0.01}{0.001} =10[/tex]
Regards.
The experimental group is the group that is left
4.
alone during the
experim
ent.
Tru or false
what biomolecule is part of the structure of ATP,nucleotides,and nucleic acids?
Most of the ionic compounds are found in the
Answer:
Ionic compounds are compounds consisting of ions.
Explanation:
Ionic compound can be more complicated the two element one consist of positively and negatively charged ions.
Ionic compound are they electrical neutral the charges are always equal and opposite,ionic compound usually have they multiple nearest part of molecules.Ionic compound containing hydroxide and oxide are they classified as bases and they performed acid base reactions.Ionic compound typically high melting and boiling points hard and brittle,almost electrically insulating.Ionic compound can be produced by the evaporation or freezing, and they metals can directly react the highly negative gases to an ionic product.Ionic compound is can be obtained as the solid compound by the solvent from electrolyte solution.Ionic compound used for the solid state of complex ionic compounds from solid melted together.Ionic compound also be synthesized as the product of a high temperature reaction between solids.Ionic compound held together the forces between the charge distribution of these bodies and the particular ionic compound.I am full of cones that make images clear. If you didn’t have me, you’d still see but you’d be worse for the wear. What part of the eye am I?
It would be "Retina"
Hope it helped.
Thank YouIf you formed a protein that was 100 amino acids in length, how many water molecules would
be removed?
50 water molecules would be removed
Answer:
50 molecules
Explanation:
Divide the number by 2.
100 ÷ 2 = 50.
50 molecules must be removed.
Accepta bond formed by the electrical attraction between two oppositely charged ions is a(n)_____.
Answer:
Ionic bond
Explanation:
A bond formed by the electrical attraction between two oppositely charged ions is an Ionic bond.
How do experiments show cause-and-effect relationships?
Answer:
A cause and effect relationship is when something happens that makes something else happen. ... Cause and effect relationships are also found in stories. For example, if Mae is late to school, she might lose recess time. In that case, being late to school is the cause and the effect, or result, is her losing recess time.
An organism that has the ability to maintain an internal temperature suitable for life.
ectotherm
endotherm
heterotrophs
species
Answer:
The correct answer is - endotherm.
Explanation:
Homeostasis is the process that is responsible for maintaining the internal body environment including the temperature of an individual in order to survive.
Endothermic organisms are the organism that maintains their body temperature and independent of environmental change where is ectothermic are dependent on the external environment to regulate their body temperature.
Thus, the correct answer is - endotherm.
Answer: Endotherm
Explanation:
HELP PLEASE :,,,,,,,|
Answer:
i think it is B
Explanation:
i hope it help
1.increasing heart rate raised the blood delivery of the body
True or false
Water has the property of having a high specific heat. This trait has a great influence on maintaining homeostasis within the body. Which of the following accurately explains what it means to have a high specific heat
Answer:
We can write the specific heat as:
C = (dU/dT)
Where C is the specific heat, U is the internal energy and T is the temperature.
This is:
"How much does change the internal energy when the temperature changes".
Having a high specific heat (and positive) means that for every little increase in the temperature we will have a large change in the internal energy.
What does this mean?
Think in the inverse way:
A larger specific heat means that we need a large amount of heat (the heat is energy) to change a little the temperature.
Then this is good, because even when receiving a lot of heat, the body temperature will remain about the same.
Question 5
If you removed the lens from an eye and looked through it at an upright tree, how would the tree appear?
upright
upside down
the top of the tree would be pointing to the left
the top of the tree would be pointing to the right
If you removed the lens from an eye and looked through it at an upright tree, the tree appear upside down. Thus, the correct option for this question is B.
What is the function of the lens?The function of the lens in the eyes is to focus light rays onto the retina. Then the retina converts this light into electrical signals which send messages to your brain and creates the image that you observe.
The lens of the eye is the translucent biconvex structure that dangled behind the Iris of the eye. If you eliminate the lens from an eye and looked through it at an upright tree, then the perception of light is not made and cannot stimulate electrical signals by the retina, and the tree will appear upside down or an inverted image is formed.
Therefore, the tree will appear upside down, if you removed the lens from an eye and looked through it at an upright tree. Thus, the correct option for this question is B.
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Why is it important to understand both physics and chemistry when studying living things?
answer: both aspects , sameness &variety are the result of biological evolution.
A student wants to illustrate the number of each different bird species that migrates south in winter. Which type of chart/graph would be the most appropriate to use?
a
Pie Chart
b
Bar Graph
c
Line Graph
Answer:
bar graph
Explanation:
A bar graph
You want to show that there is no connection between one species and another.
The line graph will do exactly the opposite. It will imply that the line joining 2 points gives some connection between one point and the next point.
The Pie chart is usually used to compare one number size with a another, like the total number of Covus 19 by state each state close to the other. It is not a good choice because California (for example) might have the most number of cases of the virus but it also has the largest population. You might use the pie chart by converting it to %s, but what would that give you, and how could you use it.
I am a chemical reaction that absorbs more energy than I release; my products have a higher bond energy than my reactant s. What am i?
it is an endothermic reaction
A stimulus causes a change or response in an organism.
O True
O False
a
Answer:
the answer is true
Explanation:
I hope that's helps
A stimulus causes a change or response in an organism. This statement is true.
What is Stimulus?A stimulus is defined as a detectable change in the physical or chemical composition of an organism's internal or external environment. It is the ability of an organism or organ to detect external stimuli so as to make an appropriate response is called sensitivity.
A stimulus can also cause an action or response which is like the ringing of the alarm clock even if we didn't sleep through it. The stimulus can include:
Irritants.Sights.Smells.Sounds.Temperature changes.A stimulus causes a change or response in an organism where the shape of a cell can tell about the job the cell is doing. Cell theory is the result of one person's hypothesis and observation.
Thus, a stimulus causes a change or response in an organism. This statement is true.
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can anyone help me with the answer above? brainlist if you end up being correct
Answer:
Oligopoly
Explanation:
That's the answer
Answer:
Oligopoly
Explanation:
Convert to find the volume in liters.
PLS HELP ANYONE!!
PLEASE HELP ME PLEASEE!!!!! VERY EASY FOR SOME
Answer:
they would absorb
Explanation:
hopes that helps