Answer:
d. Haploid egg and sperm cells combine to create a diploid individual
Explanation:
Animals are diploid organisms (2n) and undergo sexual reproduction. This sexual reproduction causes them to produce gametes via a process called MEIOSIS. Meiosis is a division that reduced the number of chromosomes in the daughter cell (gamete) by half.
This means that meiotic division produces haploid gametes (n) from a diploid animal. This happens so that when the haploid sperm cell (male gametes) and haploid egg cell (female gametes) meet in a process called FERTILIZATION, a diploid individual is created.
Answer:
D. Haploid egg and sperm cells combine to create a diploid individual
Explanation:
The plasma membrane is selectively permeable. It allows some substances to enter and leave the cell unrestricted while others are restricted. Some toxins produced by certain bacteria cross the plasma membrane, interfering with normal chemical reactions, and ultimately killing the affected cell. Why are cells unable to stop the flood of these harmful substances into the cell
Answer:
There are specific receptors present on the surface of the normal cell membrane to recognize the molecules to allow them to pass or not. Most of the bacterial toxin are water-soluble molecules, and bound to the cell surface and interact with them as some time antibody-antigen interaction or cell recognition does not occur that form a pore in the cell membrane and toxins move into the cell.
Once toxins enter the cell they attack intracellular targets through endocytic vesicles. Ultimately these ends in cell death.
The cells are not able to stop the flow of the mentioned harmful substances into the cell as they fail to recognize them as foreign entities. These foreign toxins have intracellular targets with which they bind and lead to death of the cell.
Cell death due to foreign toxins:The plasma membrane is formed of lipids. The toxins produced by the bacterial cells are water soluble. Therefore, they identify particular receptors on the membrane and associate with them. Thus, cell at certain occasions fail to identify them as foreign entities.
They combine with the plasma membrane of the cell and induce pore formation, however, there are many toxins that invade the cell and possess intracellular targets via endocytic vesicles. With the help of these vesicles, they deliver their enzymatic domain into the cytosol and results in the death of the cell by obstructing the metabolism of the cell.
Thus, cells fail to identify the bacterial toxins as foreign entities and they invade the cell and results in cell death.
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2. Which 2 organelles are found in BOTH plants and animals? *
Answer:
Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.
Explanation:
In a direct variation, y=39 when x=3. Find the value of y when x=2.
1.) 58.5
2.) 26
3.) 02
4.) 3
A complete living thing, for example
a rabbit or an oak tree, is
A. a biome.
B. an organelle.
C. an organism.
D. a population.
Lihts Reserve
Answer:
C
Explanation:
a single living thing is an organism
(10 points} {brainliest} PLS HELP <33
The mechanoreceptors sensing light touch are concentrated on
A. the back of the body.
B. hairy skin like forearms and legs.
C. hairless skin like lips and fingertips.
D. the scalp.
Answer:
Hairless skin areas
Explanation:
The mechanoreceptors sensing light touch are concentrated on Hairless skin like lips and fingertips, option C is correct.
Mechanoreceptors sensing light touch are most concentrated on hairless skin regions such as lips and fingertips. These areas have a higher density of specialized touch receptors, known as Meissner's corpuscles and Merkel cells, which are particularly sensitive to light touch sensations. Hairless skin allows for more direct contact with external stimuli, enhancing the perception of gentle touch and fine tactile discrimination.
In contrast, areas with hair, like the back of the body or the scalp, have a lower density of these mechanoreceptors and are more involved in detecting other sensory modalities such as temperature or pain, option C is correct.
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Which of the following biological processes releases oxygen into the atmosphere?
Answer:
photosynthesis
Explanation:
wcogo (gocow backwards)
water+carbon dioxide->glucose+oxygen
Stating the consequences of drug use is a resistance strategy that can involve __________. A. explaining why the drug is harmful for you B. explaining possible negative side effects of the drug C. explaining how your life might negatively change if you began taking the drug D. all of the above Please select the best answer from the choices provided. A B C D Mark this and return
Answer:
D. all of the above
Explanation:
It is all of them. When we are explaining to someone the consequences of taking a certain drug we can start by explaining to them why the drug in question is harmful to them. Will it ruin their body, their health or others. The drug may have some negative effects that we also need to explain. Telling them how it will ruin their life or their family if they start to take the drug.
PLEASE HELP!!!! DUE AT MIDNIGHT
Drag the tiles to the boxes to form the correct pairs.
Match the parts of fruits.
Answer:
Exocarp is the outer layer
Endocarp surrounds the seed so I suppose the papery part
Mesocarp I think is the fleshy stuff.
Hope it helps!
Explanation:
if a sample contains 20g of an isotope that has a half life of 1000 years how much will be left after 2000 years
After 2000 years, there will be 5g of the isotope remaining.
What is an isotope?If an isotope has a half-life of 1000 years, it means that after 1000 years, half of the original sample will have decayed. After another 1000 years (2000 years total), half of the remaining sample will have decayed, and so on.
To calculate how much of the sample will be left after 2000 years, we can use the following formula:
[tex]N = N_{0} * (1/2)^ (t/T)[/tex]
where:
N = the amount of the isotope remaining after time t
N0 = the initial amount of the isotope
t = the time that has elapsed
T = the half-life of the isotope
Plugging in the values from the problem, we get:
N = 20g * (1/2)^(2000/1000)
N = 20g * (1/2)^2
N = 20g * 1/4
N = 5g
Therefore, after 2000 years, there will be 5g of the isotope remaining.
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help me pls!!!! I have to get a good grade!!!
ASAP!!!!!!!!!
How do plants help prevent erosion?
Plant leaves take in carbon dioxide during photosynthesis.
Plant roots absorb water from the ground.
Plant roots help to hold soil in place.
Plant leaves are used to create fabrics and other materials.
Answer:
plant roots hold soil in place
Explanation:
have a nice day
Answer:
plant roots hold soil in place
Explanation:
top person star whatever was right
If a woman is heterozygous for widow's peak
(widow's peak is dominant over a smooth hairline) has children with a man with a smooth hairline, what
are the possible phenotypes of their children?
It is impossible to determine the possible phenotypes.
O All of their children will have a widow's peak.
O None of their children will have a widow's peak.
It is possible for their children to either have widow's peak or a smooth hairline.
Answer:
It is possible for their children to either have widow's peak or a smooth hairline.
Explanation:
Let's say that the widow's peak allele is W (dominant) and the smooth hairline is w (recessive).
A woman heterozygous for widow's peak is Ww. A man with a smooth hairline must have two copies of the smooth allele since it is a recessive trait, so he must be ww.
The cross is Ww x ww
W w
w Ww ww
w Ww ww
There is a 50% chance that the children will have the genotype Ww, and therefore have a widow's peak. There is a 50% chance the children will be ww, and will therefore have a smooth hairline.
So, It is possible for their children to either have widow's peak or a smooth hairline.
Mary has type a blood marries father has type O blood Mary Mary’s bob who has type O blood what percent of their children would be expected to have type O blood
Which type of fossil appears as a “black painting” on a rock?
Answer: carbon film
Explanation: this answer is 100% right I’m staring at the answer on my test right now
WILL MARK YOU!!! HELP!
Where does sugar enter the blood?
Answer:
When the stomach digests sugar it turns into glucose. Glucose is then processed in the stomach and small intestines rather absorbed and then released into the bloodstream.
Explanation:
How does the formation of sea ice impact the density of the surrounding seawater?
A. The formation of sea ice removes freshwater and dissolved solids from seawater, leading to an increase in density.
B. The formation of sea ice removes freshwater, leaving dissolved solids behind and decreasing the density of seawater.
C. The formation of sea ice removes freshwater and dissolved solids from seawater, leading to a decrease in density.
D. The formation of sea ice removes freshwater, leaving dissolved solids behind and increasing the density of seawater.
The formation of sea ice removes freshwater and dissolved solids from seawater, leading to a decrease in density. The correct option is C.
What is salinity?The concentration levels of salts in water or soils are referred to as "salinity."
Salinity is classified into three types based on its cause: primary salinity (also known as innate salinity), secondary salinity (also known as dryland salinity), and supplementary salinity (also called irrigation salinity).
When the water table rises, natural salts rise to the surface; in sufficient quantities, these salts become toxic to most plants.
As a result, the surrounding seawater becomes saltier because salt is left behind when sea ice forms.
As seawater becomes saltier, its density rises and it begins to sink. Surface water is drawn in to replace sinking water, which eventually cools and salts enough to sink.
Thus, the correct option is C.
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POSSIBLE POINTS
A part of the circulatory system allows the exchange of water, oxygen, nutrients, and waste between the blood and surrounding
tissues. Which part of the circulatory system is described. ?
Answer:
rough ER → ER-to-Golgi transport vesicles → Golgi cisternae → secretory or transport vesicles → cell surface (exocytosis)
Explanation:
Question 5
1 pts
What organelle of a cell has the genetic information?
O Vacuole
O Mitochondria
Chloroplast
O Nedeus
Answer:
nucleas
Explanation:
Which organelle aids in the maintenance of cell homeostasis by selectively regulating The passage of materials into and out of the cell?
A. Plasma membrane
B. Lysosome
C. Ribosome
D. Nuclear membrane
Answer: Plasma Membrane.
Explanation:
Plasma membrane controls what goes in and out of the cell and maintains a stable internal environment.
Lysosomes breaks down dead stuff and can program the cell death.
Ribosomes create proteins.
Helpppp meeeeeee plssss
Answer:
ok
Explanation:
ok thats the answer
PLEASE HELP ME WITH THIS AND HURRY WILL MARK AS BRANLIEST!!!!!! Why do leaves change color in the fall? Research this phenomenon and write a two-page report describing what happens. Be sure to include an introduction and a conclusion to your report. Use the information you have learned in this lesson about chlorophyll, the green plant pigment, and its role in photosynthesis to help you explain what happens in the fall.
Answer:
Leaves are always the color they turn in the fall
Explanation:
The chlorophyll created when the leaves use sunlight to create energy for the tree has a green pigment that covers the leaves actual colors. As the leaves separate from the trees they stop making chlorophyll, thus allowing the leaves true colors to return.
I hope this helps and good luck on that two-pager!
Answer:
During the fall the day gets shorter hence less sunlight this results to leaves stopping their food making process. The chlorophyll breaks down, the green color disappears and the yellow to orange color becomes visible
Explanation:
Someone pls helppp quick!!!!
Answer:
First one
Explanation:
A molecule of glucose has 10 fewer hydrogen atoms than a molecule of sucrose
Sucrose- H22
Glucose-H12 + 10 =22
Hope this is right!
PLS HELP ILL MARK BRAINLIEST !!!!
turn TACCATCGATTGGAA to a RNA sequel
The RNA sequence is:
AUG GUA GCU AAC CUU
I need some help on this worksheet ASAP please
Answer:
sorry I don't know the answers
In pea plants, plant height is controlled by a single autosomal dominant gene. Tall plants (H) are dominant to short plants (h). A tall plant with the genotype capital H lowercase h crossed to a tall plant with the genotype capital H lowercase h. In a cross of two tall heterozygous plants, which phenotype ratio is expected from the resulting offspring?
Answer:
3:1 (Tall=75%)(Short=25%)
A woman of childbearing years who is not pregnant has _______ absorption rate of calcium as compared to a woman who is pregnant
Answer:
The correct answer is - lower
Explanation:
Pregnant women require an increased amount of calcium as it can provide a sufficient amount of calcium for herself and her fetuses. During lactation, the calcium is reabsorbed very fast and rapidly that supplies the calcium for the milk. So, the normal women of childbearing age do not require the amount of calcium as pregnant women require.
Thus, there is a lower absorption rate of calcium as compared to a pregnant women
I don’t understand biology at all and I am worried about how to pass biology . Does anyone have study tips for biology or anyways that can help me relearn everything
Answer:
Biology is not a hard class however it does require memorization and comprehension of certain topics. I recommend that you read over the chapters and make flashcards and test yourself. You can also ask your teacher for help. There are many videos available that do a great job at explaining each topic in biology. In addition, there are various websites that can also provide information. You should make study groups with your classmates as it is a more fun and effective way of studying.
Answer:
Firstly, don't stress, you'll get through it. Worrying will just slow you down, and learn Biology as something you get to do, and not a chore.
And if you want to relearn everything from the beginning, then I would recommend Crash Course's free Biology courses on YT, they also have Chemistry courses and everything. You can also go to Ask a Biologist, where you can do more than just ask questions.
There are so many more sources of information and everything, but one thing is; don't stress, that's the key.
Good luck, stay safe and healthy.
You'll get through it! Don't worry. If you want me to recommend more websites to you, just comment on this answer :D
Predict the effects of injuries to the following structures: Cerebellum, Pons, Thalamus
Answer:
Explanation:
if cerebellum become injured then problems occur in those activities of the body which are controlled by cerebellum like speeching,thinking,learning and sensation of sound and light.
if pons become injured then problems occur in those activities of the body which are controlled by pons like inspiration expiration biological and rhythm.
thalamus control pleasure and fear feelings so if thalamus become injured then problems occur in pleasure and fear feelings
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air comming out of their mouth looked loke smoke. They were amused and wondered how it happened. Help them find the answer
Answer:
condensation
Explanation: