6 reasons why Meiosis and mitosis are different (PLEASE HELP)
Answer:
Reasons why they're different :
Explanation:
1. Mitosis is reserved for somatic cells while meiosis is reserved for sex cells (gametes).
2. Mitosis results in identical cells , while meiosis results in genetically distinct cells.
3. Mitosis undergoes one round of cell division while meiosis undergoes two rounds of divison.
4. Mitosis results in diploid daughter cells, while meiosis results in haploid daughter cells.
5. Unlike mitosis, meiosis differs in males and females.
6. Mitosis creates a human cell with 46 chromosomes, while meiosis creates a human cell with 23 chromosomes.
Which of the following is a subatomic particle located inside the nucleus of
an atom?
o
A. Electron
o
B. Neutron
C. lon
D. Positron
The answer is :
B. Neutron
Lab: Natural Selection
Assignment: Lab Conclusion Active
Prompt
Address the following points in paragraph form to write your conclusion.
1. Restate the overall purpose of the experiment. (Why did you do this experiment? What did it teach you?)
2. What were the major findings? (summarize the data you collected)
3. Was the hyposthesis supported by the data? (state your hypothesis and explain how your data relates to your hypothesis)
4. How could this experiment be improved? (If you did this again what could you do differently?)
5. What could be studied next after this experiment? (What else could you test to help you better understand this topic?)
DA
Answer:
sorry if i did not get it right : B
Explanation:
What do you call the union of egg and sperm?
menstruation
circumsion
ovulation
fertilization
Answer:
Fertilization
Explanation:
Fertilization is the joining of gametes (egg and sperm) to form a zygote.
Which of the following would be examples of concentration gradients in everyday life? PICK ALL THAT APPLY.
Running up a slide at the playground.
A drop of food coloring spreads out into a glass of water.
The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.
The air freshener that you sprayed in the living rooms spreads out.
Answer:
A drop of food coloring spreads out into a glass of water.
The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.
The air freshener that you sprayed in the living rooms spreads out.
Explanation:
A difference in concentration of molecules in physical space is called a concentration gradient. An easy to understand example from everyday life is the application and subsequent fading of perfume or aftershave scent.
Answer:
A drop of food coloring spreads out into a glass of water.The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.The air freshener that you sprayed in the living rooms spreads out.Explanation:
These are the examples of concentration gradients in everyday life.
When designing an experiment, you come up with the question: How does the amount you talk to a plant help it grow? Which would be the best hypothesis
Answer:
The correct answer is - "If you increase the amount you talk to plants, then they will grow taller"
Explanation:
A hypothesis is a proposed or assumed explanation for the natural system or problem. It forms on the pre-existed or known data or knowledge. A good hypothesis should have the ability to relate to dependent and independent variables.
In this case, the best hypothesis would be "If you increase the amount you talk to plants, then they will grow taller" as it relates to the dependent and independent variables that are the growth of the plant and talking to the plant respectively.
is what do a fish eat scientific
Fish will mainly feed on small insects, crustaceans, leeches, worms, zooplankton, algae, and smaller fish.
Trees maintain the balance between gases in the air, removing carbon dioxide from the air and releasing oxygen
Answer:
Carbon Oxygen circle
Explanation:
Is the process where living things exchange air
I need help once again!!
Answer:
I believe the answer is A. An organ system supports all parts of the organism.
Explanation:
This answer makes the most sense to me.
what are the 6 classification of sewing equipment
Answer:
what are the 6 classification of sewing equipment
Stitch classification according to ASTM
The chain stitch. Hand stitch. Double backstitch stitch. Multiple chain stitch. Cover stitch. Single Thread Double Topstitch Stitch.Explanation:
Osmosis is the movement of a liquid (usually water) through a semi-permeable membrane.
A. True
B. False
Osmosis is the movement of a liquid (usually water) through a semi-permeable membrane.
[tex]\sf\purple{A.\:True.}[/tex] ✅
In other words, it is the movement of water through a semipermeable membrane from a region of low concentration to a region of high concentration.[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]
A geneticist wants to determine what mutation in a DNA molecule changed the structure of a specific protein. What would the scientist need to know before planning the investigation?
The normal sequence of bases that code for the protein
Whether the mutation was a substitution, insertion, or deletion
The total number of bases in the DNA molecule
How many thymine bases are in the DNA molecule
A mutation is any change in the sequence of DNA because of any reason such as deletion, insertion, etc. To determine the mutation in a DNA molecule changed the structure of a specific protein scientists should know the normal sequence of bases that code for the protein.
What is mutation?A mutation is a random change in the DNA sequence either due to insertion, deletion, or substitution.
By mutating a gene's code for making a protein, a variant can leads to a protein's improper functioning or to not being produced at all.
Scientists must mandatorily determine the normal base sequence of the protein code before investigating the mutation in the DNA sequence for a particular protein.
Thus, the correct option is A.
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how does competition limit the amount of individuals in populations?
Explanation:
Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. This flat upper line on a growth curve is the carrying capacity. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.
Nhich of the following statements is NOT true?
Answer:
A.
Explanation:
A.
Name some of the sites occupied by early farmers from the Neolithic culture
Some sites are:
Mesopatamia, and Epipalaeolithic,
The two main functions of the lymphatic system are a producing hormones that regulate the immune system and coagulating blood. b returning tissue fluid to the circulatory system and fighting infections. c producing hormones that regulate the immune system and fighting infections. d coagulating blood and fighting infections. e returning tissue fluid to the circulatory system and coagulating blood.
Answer:
The answer is b
Explanation:
The lymphatic system doesn't coagulate the blood it moves it around the body to keep it stagnate.
Hope this helps!
i’m gunna be blowing this up lol so please help :)
HELP QUICK I ONLY HAVE LIKE 5 minutes
Which human activity damages a coral reef?
Overfishing
Recycling
Controlling wastes
Conservation
Answer:
Overfishing damages a coral reef
Answer:
overfishing
Explanation:
Calculate the density of a mineral sample that has a mass of 12 grams and volume of 1.23 cm.
Answer:
[tex]density = \frac{12}{1.23} \: then \: d = 9.756097 \: \frac{g}{cm} [/tex]
which statements describe the process of scientific inquiry
Answer: Scientific inquiry involves similar processes and practices. Scientific inquiry involves asking questions about observations.
Explanation:
Answer:
can you please be specific
Which of the following makes an argument for how genetic diversity provides an evolutionary advantage for a population?
O
A. Sexual reproduction provides an evolutionary advantage for populations since it decreases genetic diversity.
B. Sexual reproduction provides an evolutionary advantage for populations since it increases genetic diversity.
о
C. Asexual reproduction provides an evolutionary advantage for populations since it increases genetic diversity.
O D. Asexual reproduction provides an evolutionary advantage for populations since it decreases genetic diversity.
In what form is the DNA found when a cell is beginning cell division or is involved in cell division?
A.) Centromere
B.) Chromosome
C.) Chromatin
can people see solar winds?
Answer:
Yes
Explanation:
astrophysicists can now see the solar wind with their own eyes.
The central nervous system (CNS) contains a number of components that perform specific functions within the body.
Some functions, such as breathing, swallowing, and blood circulation, are involuntary, or done without conscious
control. Which part of the CNS is responsible for these functions?
Answer:Autonomic nervous system
Explanation:
Choose two different types of cell and explain how they are adapted for the job they do in your body
Answer: Neurons, which transmits information, have dendrites and axons to transmit the signals. Cardiomyocytes, capable of spontaneous contraction due to the ramifications and tight junctions between cells.
Explanation:
Neuron: Principal component cell of the nervous system, which receives, processes and transmits information through electrical and chemical signals thanks to the electrical excitability of its plasma membrane. So they are specialized cells in the reception of stimuli and conduction of the nerve impulse, in the form of an action potential, between them through connections called synapses, or with other cell types such as, for example, the muscle fibers of the motor plate. So neurons have the ability to communicate accurately, rapidly, and over long distances with other cells, whether nerve, muscle, or glandular. Neurons have morphological characteristics that support their functions:
Dendrites: Short extensions consisting of cytoplasmic projections enveloped by a plasma membrane without a myelin sheath, that transmit impulses to the cell soma. The nerve impulse travels through the neuron, and when it reaches the dendrites, it jumps to the next neuron through the synapse (connection between cells), which occurs through the exchange of chemical substances called neurotransmitters. It also has many microtubules and few neurofilaments, both arranged in parallel bundles, many mitochondria, Nissl clumps (composed of free ribosomes attached to the rough reticulum) and smooth endoplasmic reticulum.Axons: Long extension surrounded by a membrane called axolemma, which conducts impulses from the soma to another neuron or target organ. Many axons are covered with a special insulating substance called myelin, which helps them to transmit nerve impulses quickly. Near its end, the axon divides into many branches and develops bulbous structures known as axon terminals. These axon terminals form connections with target cells.The cell bodies of some neurons from the Peripheral Nervous System (PNS), such as the motor neurons that control skeletal muscles, are located in the Central Nervous System (CNS). The axons from this motor neurons run from the CNS to the muscles they connect with. The cell bodies of other PNS neurons, such as sensory neurons that provide information, for example about touch or temperature, are located outside the CNS, where they are grouped in clusters known as ganglia. Axons of peripheral neurons that travel a common pathway bundle together and form nerves.
Neurons also consists of a central nucleus and a perikaryon that contains the typical organelles of an eukaryotic cell.
Cell nucleus: Contains one or two prominent nucleoli, and a dispersed chromatin, which indicates a high transcriptional activity.The nuclear envelope, with a multitude of nuclear pores, has a highly developed nuclear lamina. Perikarion : The most notable organelle, is the Nissl substance and such abundance in protein synthesis is due to the high biosynthetic rate. The Golgi apparatus is a highly developed system of flattened, small agranular vesicles and it is the region where the products of the Nissl substance enable further synthesis. There are also lysosomes and mitochondria , a cytoskeleton rich in microtubules and intermediate filaments.
Cardiomyocytes: Cardiac muscle cells that represents the contractile unit of the myocardiom, capable of spontaneous contraction since they show specialization in excitation and conduction of action potentials. The characteristic ramifications and tight junctions between these cells form a solid network of myocardial fibers, which determines the cardiac pump function and the cellular electrical conduction system that allows this pump to function. They are uninucleated cells with a large nucleus located in the center of the cell cytoplasm and they show transverse striations, with dark bands corresponding to the overlapping of actin and myosin filaments in their cytoskeleton, and with light bands corresponding only to actin filaments. Cardiomyocytes have morphological characteristics that support their functions:
Sarcoplasmic reticulum: Not well developed and distributed irregularly among the myofibrils, which appear distinctly separated.Mitochondria: Small and extremely numerous, packed and regularly distributed, dividing the cardiac cells into very obvious myofibrils. Cardiac muscle cells have very little glycogen and therefore cannot obtain much energy from glycolysis. This means that most of their energy comes from oxidative phosphorylation, with high oxygen consumption. Cytoplasm: Occupied by longitudinally arranged myofibrils with a striated pattern. Intercalary discs: Join cardiomyocytes, which appear as dark bands in histological preparations, and which are a set of junctional complexes where desmosomes and adherens junctions can be found. There are also cleavage junctions that allow contractile synchronization as they communicate cytoplasms of neighboring cells directly.Epidermic cells and red blood cells are two types of specialized cells. These mature cell types are developed by cell differentiation.
Cell differentiation refers to the differential gene expression that leads to the development of different types of cells which are specialized to perform specific functions.For example, hematopoietic stem cells express the hemoglobin gene to develop specialized red blood cells, which are specialized to transport oxygen to all cells of the body.Moreover, epidermic cells are specialized to provide mechanical strength and protection.In conclusion, epidermic cells and red blood cells are two types of specialized cells. These mature cell types are developed by cell differentiation.
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Which best defines a gene?
A. A gene is a unit of protein that contains the
genetic code.
B. A gene is a unit of DNA that contains code
for the creation of one protein.
C. A gene is a unit of DNA that contains the
code for the creation of amino acids.
D. none of the above
which of the followimg could be reasons why popultion sizes may reach and maintaim plateaus? choose the three that apply
Will mark as brilliant answer
Answer:
Below :D
Explanation:
So basically, this question is asking what will cause a species' population to reach a point where it stops increasing.
Lets think about what can cause a lack of increase?
A decrease can cause this.
Or a slow in the rate of increase.
Now lets look at our selectable answers and see if any of them would fall under these two things.
First up is fewer deaths.
Well, fewer deaths basically means less of a decrease in population.
This is the opposite of decreasing the populatin count, and would instead raise it.
Next we have a limit in food supply.
This would cause a organism to starve and die.
So this would cause a decrease in population count.
So B is one of the answers
Next up is competition with other species.
When two species compete for a sort of resources, one massivly dies out due to outcompetion, and loses the resources needed to survive.
So this would also cause a large decrease in population count.
This makes C one of the answers
Next is increase in birth rates.
This would cause more organisms to be born of a species, basically increasing the population count.
This is the opposite of a decrease in population.
Next we have competition for space.
This is very similar to answer C, and the outcompeted species dies out due to lack of space.
So E is one of the answers
Now, the next answer seems viable, because major storms can kill off organisms, like hurricanes, earthquakes, and volcanos for instance.
However, as seen in many organisms over history, while these major storms kill of organisms, they can recover.
So although major storms decrease populations, they dont actually limit them.
In the end:
B is correct
C is correct
E is correct
Hope this helps!
pls help me i need help rlly fast
Answer:
Plastics are good insulators
Much of our world is made up of plants, soil, and water. What do you think is
important about these three things? How do they interrelate?
Plants, soil, and water are interrelated to one another and help humans to sustain themselves on the earth's surface.
What do you mean by Soil?Soil may be defined as the loose surface material that covers most land. It consists of inorganic particles and organic matter.
Water makes the soil moisturized which increases its fertility. When soil becomes fertile, the number of plants grows which directly absorbs water through the xylem and mediates the process of photosynthesis. In this way, all plants, soil, and water are connected to one another.
Therefore, Plants, soil, and water are interrelated to one another and help humans to sustain themselves on the earth's surface.
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Which two statements below correctly describe one similarity and one difference between cellular respiration and photosynthesis?
Cellular respiration and photosynthesis both involve water.
Cellular respiration uses sugar and photosynthesis produces sugar.
Cellular respiration and photosynthesis both use light to produce energy.
Cellular respiration requires light energy and photosynthesis requires chemical energy.
A. Statements 1 and 2
B. Statements 1 and 4
C. Statements 2 and 3
D. Statements 3 and 4
Answer:
The answer is A.
In the equation of breakdown of glucose (cellular respiration) and photosynthesis the end product of both is water, oxygen and carbon (iv) dioxide. And both involve glucose in the chemical reaction.