Plsssss helppppp!!!!!!

Answer:

Lymph

Explanation:

A colorless or faintly yellow fluid that helps remove wastes ,toxins ,and other harmful substances from the body ;also known as lymphatic fluid or interstitial fluid.

Answer:

nucleas

Explanation:

Explanation:

nonliving characteristics include the fact that they are not cells have no cytoplasm or cellular organelles and carry out no metabolism on their own and therefore must replicate using the host cell's metabolic machinery. And viruses can infect animals, plants and even other microorganisms.

Answer:

population is a group of organisms belonging to the same species that live in the same area and interact with one another. A community is all of the populations of different species that live in the same area and interact with one another. ... An ecosystem is made of the biotic and abiotic factors in an area

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

Answer:

C

Explanation:

a single living thing is an organism

Answer:

the hotter is it, the more bluish it is. And the more reddish it is, the colder it is

just like the bluer the star, the hotter it is, the redder the star, the colder it is.

Comparing the temperatures of the two cooking appliances ; The temperature emitted in stove burners are hotter than the temperatures emitted by the toaster

White-Blue flames are the hottest flames when combined together but the hottest single flame is the blue flame burning between ( 2,600º F and 3,000º F). Blue flames have more oxygen than other types of flames, hence they burn hottest and this is because gases when burnt are hotter than other materials.  while

The orange flame of a toaster burns at a temperature between ( 1100°C to 1200°C) . releasing carbon monoxide as it burns.

Hence we can conclude that The temperature emitted in stove burners are hotter than the temperatures emitted by the wires of a toaster.

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Answer:

ok

Explanation:

ok thats the answer

Answer:

2, 3, 4, 5

Explanation:

I think this is right sorry if I get it wrong

Answer:

Medial Malleolus is the answer

Answer:

the pulse or the temperature of the body

Answer:

If it grows and develops, uses energy, reproduces, is made of cells, responds to its environment, and adapts to its environment, it's living. A non-living object will not conform to all of these, only one or multiple of these qualities.

Answer: carbon film

Explanation: this answer is 100% right I’m staring at the answer on my test right now

Answer:

The figure is absent in this question, however, it can be answered based on general understanding of the structure of rough endoplasmic reticulum. The options are:

A) Structure Y contributes the raw materials required for the synthesis of proteins

B) Structure Y packages proteins for export from the cell

C) Structure Y is the location where proteins are synthesized

D) Structure Y contains enzymes that cut and bind proteins.

The answer is C.

Explanation:

The rough endoplasmic reticulum is one of the two types of the endoplasmic reticulum, which is a part of the endomembrane system found in eukaryotic cells. The rough endoplasmic reticulum is so named "rough" because of the structures attached to its surface.

The structures attached to the surface of the rough endoplasmic reticulum are the structures labelled Y in the figure of this question. Those structures are called RIBOSOMES and they are the site (organelles) of protein synthesis in living cells. Therefore, structure Y is the location where where proteins are synthesized.

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

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.

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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Answer:

rough ER → ER-to-Golgi transport vesicles → Golgi cisternae → secretory or transport vesicles → cell surface (exocytosis)

Explanation:

Answer:

The second time the daughters cells divided haploid cells form and then migrate to other haploid cells in the process of fertilization.

Explanation:

Daughter cells divide a second time In meiosis because it creates cells that are destined to become gametes.

This is the type of cell division common in reproduction and gamete production and produces four unique daughter cells.

The daughter cells divide twice because it creates cells that are destined to become gametes as its union during fertilization would result in offspring with twice the normal number of chromosomes.

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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:

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:

Based on the theory of evolution, poaching of males for their tusk exacted a pressure on the elephant population which made more tuskless males to survive more than males with tucks as a result of natural selection.

Also, tucklessness as a trait is sex-linked, this explains why 50% of females lost their tusks why the males retain theirs.

Recall:

Male elephants are known to have tusks. However, poaching of elephants with tusks have exacted the pressure of natural selection on the population of elephants in the park.

The few tuskless males that are left surviving therefore produce more offspring as they pass the gene of tucklessness to their offspring. Over a long time, more tuckless males emerge while males with tusks will become almost non-existence as a result of natural selection.

A study showed that most females elephants have no incisors which suggests that the trait for tucklessness is sex-linked. This explains why 50% of the females lost their tusks and males retain theirs.

In summary, based on the theory of evolution, poaching of males for their tusk exacted a pressure on the elephant population which made more tuskless males to survive more than males with tucks as a result of natural selection.

Also, tucklessness as a trait is sex-linked, this explains why 50% of females lost their tusks why the males retain theirs.

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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:

Answer:

Permafrost, amber and tar

Explanation:

Fossils are the remains of prehistoric plants or animals embedded and  preserved in rocks. They are preserved by three main methods: unaltered soft or hard parts, altered hard parts, and trace fossil.

Soft-tissue original remains are very rare except as captured in amber, trapped in tar, dried out or frozen in permafrost.

Amber is ancient tree sap that can trap flowers, worms, insects as well as small amphibians and mammals and preserve them whole.

Permafrost is an area of land that is permanently frozen below the surface. It is common in Siberia (part of Russia) and in Alaska. Many different kinds of frozen extinct as well extant animals have been found in Siberian permafrost, including woolly mammoths, horses and bison, and lions.

Tar or asphalt is a liquid found naturally in small pits in swamps. These pits are  formed from crude oil seeping through the ground. The lighter elements of crude oil evaporate leaving thick sticky asphalt. Animals that fall into these pits hardly escape and their bodies are preserved within. Fossils of animals such as wolves, short-faced bears, American lions, ground sloth and saber-toothed cat have been found preserved intact in tar.

Answer:

c

Explanation:

After 2000 years, there will be 5g of the isotope remaining.

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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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.

Answer:

Two, usually

Explanation:

A diploid plant has two copies (alleles) of every gene. If one copy of the gene is destroyed by a mutation, the plant will likely be okay with its other copy, and the trait will still be expressed.

However, some traits require both copies of the gene to be expressed. For example, if one gene is destroyed that means only half the amount of the gene product is produced. If that is not enough protein for the trait to be expressed, then the trait will be lost.

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: