Someone help me give me the answer
Imagine sperm and egg cells have 46 chromosomes like other cells in the body. That
is they have 46 chromosomes when a sperm cells fertilizes an egg cell. Would that
affect the total number of chromosomes in their offspring or children? Tell why or why
not.
Answer:
When an egg and sperm having 46 chromosomes similar to the body cells, their fertilization produces offsprings or children with 92 chromosomes which are double number of chromosomes as compared to parent cell. So they are not similar to parents. As we know that fertilization is the process of fusion of gametes and paring up of chromosomes. The offsprings are different from their parents in having more chromosome sets.
Explanation:
2. Identify the epithelial tissue that is most suited to each of the following functions. a. diffusion of gases across lung air sacs b. mechanical protection and waterproofing c. secretion of mucus and movement of mucus d. stretchy quality that allows expand as the lumen is filled e. secretion, absorption and chemical protection f. mechanical protection of a moist surface
Answer:
e. secretion, absorption and chemical protection
Explanation:
Epithelial tissues is responsible for the protection of the skin, absorption of nutrients during digestion and secretion of waste materials. These tissues form covering to all body surfaces. They also perform a variety of other functions such as excretion of waste substances, filtration of air from dirt and particles and clean the air that is inhaled, diffusion, and sensory reception.
which of the following would be produced during mitosis
Answer:
mitosis is a process of cell division in which one cell is divided into two and the two cells produced are exacty similar to the parent cell. chromosome number cell size remains same.
mitosis plays an important role in growth of organisms.
Explanation:
PLS HELP, Why is gene flow important to the overall health of a species?
Answer:
Gene flow is an important mechanism for transferring genetic diversity among populations. ... Gene flow is expected to be lower in species that have low dispersal or mobility, that occur in fragmented habitats, where there are long distances between populations, and when there are small population sizes.
Explanation:
Answer:
Because it is important for transferring genetic diversity among populations. Even low levels of gene flow can have a large impact, counteracting the other evolutionary force.
Explanation:
Describe the metabolism of chemoautotrophs. What makes them different from photoautotrophs in terms of how they make chemical energy?
The source of variation in a species is
A)Carbohydrate
B) DNA
C)Protein
Answer:
DNA is the answer
Hope That help
Health researchers measure how often people exercise and how often the same people come down with the flu. The researchers find a negative correlation between the amount of weekly exercise and the number of flu symptoms in an individual. Based on this information, which of the following can we assume are TRUE?
a. People who exercise more tend to have the flu less often.
b. People who have the flu more often tend to exercise less.
c. Exercising causes people to be more healthy and less susceptible to the flu.
d. People who get sick do not have time to exercise.
e. Since exercise reduces the flu, this is really positive correlation because the result is good.
f. Since the flu is a bad thing, this makes it a negative correlation.
Answer:
a, b, and c
Explanation:
Generally, correlation measures the strength of the relationship that exists between two variables. A positive correlation means that the two variables have the tendency to either increase or decrease together while a negative correlation means that the two variables tend to move in opposing directions, that is, as one is increasing, the other is decreasing and vice versa.
Now, the researchers find a negative correlation between the amount of weekly exercise and the number of flu symptoms in the subjects. This means that the more the exercise, the lesser the number of flu symptoms and the lesser the exercise per week, the more the flu symptoms. Hence, the assumptions that can be made directly or indirectly from the findings include
People who exercise more, get sick or have flu less often.People who have the flu more are most likely exercising very little or not at all.Exercising causes people to be more healthy and less susceptible to the flu.The correct options are a, b, and c.
choose all that apply.
The heart ___.
pumps blood to the body.
has four chambers.
is part of the cardiovascular system.
is made of skeletal muscle.
works with the respiratory system.
(you can pick more then one!)
The person above is right!
Please help i don’t know
Answer:
Independent variable.
Explanation:
The independent variable is the variable that you change throughout the experiment. The independent variable effects the dependent variable. It is usually denoted as x.
Why can plant cells photosynthesiz, but animal cells cannot?
a) plant cells have glucose
b) plant cells are autotrphs
c) plant cells have chloroplasts
d) plant cells have ATP
Answer:
c is the answer
Explanation:
most likely c
Give an example of positive slope.
Answer:
slope=4
or I found this one where it says as the number of people that quit smoking increases, the number of people who get lung cancer decreases if this is what you mean
Explanation:
I think this is what you were asking, as long as it is a positive number it is a positive slope
What is formed at the end of meiosis?
two genetically different cells
two genetically identical cells
four genetically different cells
four genetically identical cells
Four genetically different cells.
Meiosis I produces two haploid daughter cells, but mitosis produces 2 diploid daughter cells.
Answer:
C
Explanation:
four genetically different cells
Which of the following questions will allow you to determine if a population of organisms are MOST LIKELY a result of natural or artificial selection?
A.
Were the organisms produced by sexual or asexual reproduction?
B.
How similar are the organisms to their parents?
C.
Do the organisms have traits that are valuable to humans but are poorly suited to the wild?
D.
How many different traits are there in the population of organisms?
Answer:
.A.
Were the organisms produced by sexual or asexual reproduction?
Answer:
wwww
Explanation:wwww
How is energy tansferred between stages of the carbon cycle?
Question 16 (2 points)
If a wave is traveling at a constant speed, and the frequency increases, what would happen to the wavelength? (2 points)
Oa
It would increase.
Oь
It would decrease.
Ос
It would remain constant.
Od
It would drop to zero.
Answer:
A
Explanation:
When frequency increases so does the wavelength
Answer:
The correct answer is B. It would decrease.
Explanation:
I chose answer A. on my test and got it wrong. The correct answer was shown to me as B. Good Luck!!
In one or two paragraphs, compare and contrast surface ocean currents and deep water ocean currents in terms of causes and characteristics.
Please!!!
Answer:
Surface ocean currents
Surface currents refer to movement of the top layer of ocean water. Surface water flows in to replace the sinking water, which in turn becomes cold and salty enough to sink.
examples of surface ocean currents are California Current (Cal) in the Pacific ocean basin and the Canary Current (Can) in the Atlantic ocean basin.
Deep ocean currents
Deep-water currents describe water movement patterns far below the ocean’s surface and the influence of the wind. When ocean water freezes, forming sea ice, salt is left behind causing surrounding seawater to become saltier and denser. Dense-cold-salty water sinks to the ocean bottom.
Sex cells in male organisms are called _______ cells.
a. sperm
b. egg
Answer:
A. Sperm
Explanation:
hope i helped
A particular mountain stream is home to a population of salamanders that are red in color. In the past year, a second population of salamanders that are dark blue in color moved into the same
stream. Scientists researching the stream have recently discovered young salamanders that are red with dark blue patches on their bodies.
What can the scientists conclude from this evidence?
The Salamanders are suffering from a bacterial disease
The salamanders are on the verge of becoming extinct
The Salamanders undergo sexual reproduction
The Salamanders undergo sexual reproduction
PLEASE HELP ASAP! WILL GIVE BRAINLIEST TO CORRECT ANSWER! HELP!! HELP!!
The diagram shows the structure of an animal cell.
The image of an animal cell is shown with some organelles labeled numerically from 1 to 6. The outer double layer boundary of the cell is labeled 1. A stacked disc like structure is labeled 2. A broad rod shaped structure with an irregular shape inside it is labeled 3. The entire plain section that forms the background of the cell and is within the outer boundary is labeled 4. A small circular shape within the large circular shape is labeled 5. The large central circular shape is labeled 6.
Which number label represents the cell membrane?
1
2
4
6
(this is middle school science)
Answer:
4
Explanation:
Answer:
4
Explanation:
I took the test
Which of the following cell types is haploid?
O body cell
O sperm cell
O skin cell
O liver cell
Answer: sperm cell
Explanation: haploids only contain one set of chromosomes (not paired)
What is a model..???
Answer:
two definitions 1 a person trying in something to show pepole like dresses
2 a modle in science so scienntist can see and go wow this is what it is like the dinosur museum the t rex is a modle of how it would look like
Explanation:
hope it helps keep on questioning on lol
The process of carbon fixation occurs through what
Answer: Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon fixation occurs during the light independent reaction of photosynthesis and is the first step in the C3 or Calvin Cycle.
Synthetic biologists at the Scripps Institute expanded the genetic repertoire by adding two new bases into living bacterial cells. The two bases are named d5SICS and dNaM, and they base-pair with one another. How many different codons are possible in nucleic acids containing six different nucleotides if a codon consists of a consecutive sequence of three nucleotides
Answer:
216 codons
Explanation:
In the RNA molecule there are four types of nucleotide bases, i.e., Adenine, Uracil (Thymine in DNA), Guanine, and Cytosine. In consequence, the number of possible codons or combinations of nucleotide triplets is 64 (4³ = 64 codons). However, these 64 codons code for only 20 different amino acids because multiple codons can code for the same amino acid, it is for that reason that the genetic code is redundant. In this case, if the number of bases would be six (6) instead of four (4) bases, then the number of possible combinations of nucleotide triplets would be 216 codons (6³ = 216).
Charles Darwin not only proposed that species could change over time, but he also described a process by which these changes could occur. What was that process?
Answer:
Charles Darwin had a theory that states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.
The theory of natural selection was proposed by Charles Darwin. Darwin postulated that species could change over time.
What is the theory of natural selection?The adaption by organism according to the surrounding environment is natural selection. It drives evolution.
Individuals in a population vary naturally. It means they are all different in some ways.
This variation means that some individuals have traits that suit better to the environment as compared than others.
This causes the species to change over time.
Thus, the process by which these changes take place is natural selection.
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different versions of the same gene (represented
with letters)?
Answer:
Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits
Explanation:
Match the words to the definitions
Answer:
The male sex cell match with sperm.
The new cell that forms from fertilization match with zygote.
A type of reproduction in which the genetic materials from two different cells combine, producing an offspring match with sexual reproduction.
A covalent compound would form when which two elements react?
A. Zinc and Chlorine
B. Carbon and Oxygen
C. Sodium and Chlorine
D. Magnesium and Oxygen
Answer:
B. Carbon and Oxygen
Explanation:
Carbon and Oxygen make CO2, which is a covalent bond
The diagram below shows a cell placed in a solution.
A cell is shown placed inside a beaker. It is labeled Cell. The solution inside the beaker is labeled 2% salt solution and the solution inside the cell is labeled 4% salt solution.
What will most likely happen to the cell?
It will expand as water moves out of it.
It will shrink as water moves out of it.
It will expand as water moves into it.
It will shrink as water moves into it.
The most likely to happen to the cell is ; ( C ) It will expand as water moves into it
The movement of water in and out of a cell is based on osmosis .The cell membrane of the cell will regulate the movement of water molecules in and out of the cell. based on the solute concentration inside the cell and outside the cell.
When a cell is placed in a hypotonic solution ( i.e. a solution with a lower solute concentration as seen in the 2% salt solution ) the water molecules from the hypotonic solution will move into the cell which will cause the cell to be Turgid/expand over time.
Hence we can conclude that the most likely thing to happen to the cell is ; It will expand as water moves into it
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4. Free or low-cost apps have few of the same benefits as fitness trackers.
True
False
The given statemnet is false because Free or low-cost apps can provide many of the same benefits as fitness trackers, albeit with some limitations.Option B
Fitness trackers are dedicated devices designed specifically for monitoring physical activity and collecting data related to fitness goals. They often include features like step counting, heart rate monitoring, sleep tracking, and GPS tracking. These devices may offer a more seamless and integrated user experience, with optimized hardware and software for tracking and analyzing fitness data.
However, free or low-cost apps can offer similar benefits and functionalities, albeit with some trade-offs. Many smartphone apps are available that can track steps, monitor heart rate, record workouts, and provide guidance for various exercises. These apps can be downloaded and installed on smartphones, making them accessible and convenient for users.
While some features might be more accurate or reliable in dedicated fitness trackers due to specialized sensors, smartphone apps can still provide valuable data and insights for tracking fitness progress. They can offer personalized workout plans, track progress over time, provide reminders and notifications, and offer social features for sharing achievements and connecting with others.
Moreover, free or low-cost apps often come with the advantage of being customizable, allowing users to choose the features and functionalities that are most relevant to their specific fitness goals and preferences. They can be easily updated and expanded with new features as technology advances.
In conclusion, while dedicated fitness trackers may offer a more comprehensive and optimized experience, free or low-cost apps can still provide many of the same benefits, making them a viable alternative for individuals seeking fitness tracking capabilities.
Option B
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