Explanation:
2. Body cells undergo the process of mitosis while gametes undergo a process called meiosis. 3. A body cell contains a complete number of chromosomes and is called a diploid cell while a gamete contains only half the number of chromosomes of its parent cell, and it is called a haploid cell.
Answer:gamete are only the egg and sperm aka the sex cells while everything else isn’t
Explanation:
The paramecium was the only unicellular organism that Stella viewed through her microscope. All the other organisms were multicellular. How was the unicellular specimen different from the multicellular organisms?
Answer:
The difference between a unicellular specimen and other multicellular organisms will be the NUMBER OF CELLS. See detailed explanation below.
Explanation:
Cells are the simplest and basic unit of life. Living organisms has been classified as unicellular or multicellular depending on the number of the cells that make them up. A unicellular organism is that which possess only one cell to carry out all its life functions. According to the question, the Paramecium is an example of unicellular organism.
On the other hand, a multicellular organism is made up of many cells that specializes to perform the different life functions of the organism. This means that a specific kind of cell carries out a specific life function, this is called Cell differentiation. Examples of multicellular organisms include plants, all eukaryotic fungi etc.
Therefore, Stella's unicellular specimen, which is the Paramecium, will be different from other multicellular organisms in the number of cells possessed by each of them. The unicellular specimen will possess just a single cell while the multicellular organisms will possess more than one cell as viewed by the microscope.
What is defined as "the actual
function of what something can
do in an ecosystem versus what it
can fundamentally do"?
A. Climatic niche
B. Realized niche
C. Approximate niche
In polygenic traits when the bell curve distribution of traits moves to one end of the curve because of a preference for best fit of that trait. What's this shift called?
Answer:
Directional selection
Explanation:
This is known as directional selection.
Answer:
Directional Selection
Explanation:
This is known as directional selection.
Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound microscope?
Cell structures could be clearly seen using a 400x compound microscope, you could see how it is stuctured and detailed because of the magnification, you can see the cell at 40x but not as clear as you can with 400x
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Children are vaccinated against tetanus. Explain why these children do not get tetanus if the bacteria enter their body through a cut in the skin. (REFER TO IMMUNITY DUE TO VACCINATION)
Answer:
Hope it helps u
Explanation:
They do not get infected with tetanus because they have already been vaccinated which means there are white blood cells and antibodies ready to fight tetanus.
Their immune system is safe because the antibodies won’t let them feel sick.
Describe the process of mitosis and meiosis.
Answer:
Mitosis:
Mitosis has 4 stages total and produces 2 diploid daughter cells. The purpose of mitosis is for cellular proliferation. Since we only get 2 daughter cells, the chromosome number remains the same and generic variation doesn't occur.
Meiosis:
Meiosis has 8 stages total and produces 4 haploid daughter cells. In the shortest nutshell, meiosis is mitosis but twice. The purpose of meiosis is sexual reproduction. Since we get 4 daughter cells, the chromosome number is halved and generic variation does occur.
The process of dividing the pre-existing cell into two or more daughter cells is called cell division.
Mitosis
Mitosis is defined as the division of the cell in which a single cell divides to form two daughter cells, having the equal number of chromosomes as present in the mother cell. In mitosis cell division, chromosomes duplicate and equally distribute into two diploid cells. Thus as a result, all the daughter cells come to have the same number of chromosomes compared to the mother cell. It occurs in somatic or vegetative cells.
Meiosis
Meiosis is a types of cell division in which a mother cell divides into four daughter cells and each daughter cell having only the half number of chromosomes as compared to mother cell. Meiosis cell division comprises two divisions: Meiosis I and Meiosis II
The meiosis I division is also known as reduction division. This is because it involves the formation of two daughter nuclei with just half number of chromosomes as that present in the another cell. more over, in the prophase stage of meiosis, crossing over ( interchange of chromosome segments between two homologous chromosomes) takes place. This causes the variation in the off-spring and gas a role in evolution.
The meiosis II is also called equational division because the number of chromosomes remains the same in the daughter nuclei as after meiosis I. In this way, four daughter haploid nuclei formed. Then the divison of cytoplasm of the cell ( cytokinesis) takes place and all nuclei get their own cytoplasm and form four haploids.
Hope this helps....
Good luck on your assignment...
In this lab, you will figure out who was guilty of the classroom food mess by determining which macromolecules are present in the mystery food sample. Rephrase this statement as a scientific question you can answer through investigation.
Answer:
need more info plzz
Explanation:
Answer:
In this food sample testing lab, you will figure out who was guilty of the classroom food mess by determining which macromolecules are present in the mystery food sample.
Explanation:
True or false? Nutrient upwelling in marine ecosystems and a seasonal difference in water temperature of fresh water lakes helps to redistribute organisms ??!!!
Answer:
yes it is true :)
Binary fission occurs in which of the following type of organsim?
Answer:
A. Prokaryotes like bacteria
Explanation:
Binary fission is a type of asexual reproduction (requiring only one organism, as opposed to sexual reproduction, which requires two) occurs when an organism itself splits into two - hence binary (bi- means two).
Binary fission occurs most often in prokaryotes; eukaryotes like plants and animals engage more in sexual reproduction because they are more complex.
The answer is thus A.
Why are rainforests particularly vulnerable to environmental degradation from subsistence farmers ?
A. Because their live hoods depend on feeding their families with the food they grow, which requires fertile land that can be acquired by cutting down the forest and burning the brush.
B. Because farmers supplements their diets by hunting large, edible species, which drive some to extension.
C. Because governments are clearing land For agriculture on an industrial scale
D. Because as farmers move to urban areas, vast tracts of land They once occupied are purchased for logging by international corporations.
Please help would be really useful , thank you!
Answer:
C. Because governments are clearing land For agriculture on an industrial scale
Explanation:
Hope this helps with your test. If I am wrong, I am sorry
what controls traits and inheritance?
Answer:
Genes
Explanation:
Gregor Mendel discovered in his experiments that a factor determined the physical characteristics of an organism. This factor is called a gene. A gene is the molecular unit of heredity in a living organism.
Genes are segments of DNA that holds the information needed to build and maintain an organism and pass genetic traits to offspring. The trait of an organism, which refers to the physical characteristics of an organism, are passed from parents to offsprings via genes. The genes also contain variant forms called ALLELE that determines which trait an organism will possess.
a lodge pole pines of NORTH America are affected by the following abiotic factors:
A) fires and fungus
B) pine beetles and fungus
C) warm dry summers and cold wet winters
D) cold wet winters and pine beetles
Answer:
C
Explanation:
Summers and winters are not living, therefore they are abiotic.
How many rounds of division are there when one cell in the testis becomes four sperm cells?
Answer:As a result of the two meiotic divisions, each primary spermatocyte produces four spermatids. During spermatogenesis there are two cellular divisions, but only one replication of DNA so that each spermatid has 23 chromosomes (haploid), one from each pair in the original primary spermatocyte
Explanation:
The trait for flower color in a plant has red and white alleles. The red color is the dominant trait. What is the phenotypic ratio for a cross between plants with red (RR) flowers and white (rr) flowers?
4 red : 0 white
3 red : 1 white
2 red : 2 white
1 red : 1 white
Answer:
4 red : 0 white
Explanation:
R R
r Rr Rr
r Rr Rr
Since the dominant allele is RR this means that it will always be red
Answer:
4 red : 0 white
Explanation:
How does the structure of epithelial tissue help it to perform its function? Its ability to conduct electrical signals allows for control and coordination of body movements. Its fibrous layers allow the tissue to be a strong yet flexible binding agent. Its contractile cells that make up the tissue allow for movement. Its tightly packed cells allow for protection against harmful substances.
Answer:
Explanation:
Epithelial tissue consists of tightly packed sheets of cells that cover surfaces—including the outside of the body—and line body cavities. For instance, the outer layer of your skin is an epithelial tissue, and so is the lining of your small intestine.
Epithelial cells are polarized, meaning that they have a top and a bottom side. The apical, top, side of an epithelial cell faces the inside of a cavity or the outside of a structure and is usually exposed to fluid or air. The basal, bottom, side faces the underlying cells. For instance, the apical sides of intestinal cells have finger-like structures that increase surface area for absorbing nutrients
What scientific knowledge about macromolecules is a direct result of Gerardus Johnannes Mulder’s 1838 discovery? All proteins contain carbon, hydrogen, oxygen, and nitrogen. All carbohydrates contain carbon, hydrogen, and oxygen. Nucleic acids are polymers with nucleotide monomers. The helical structure of DNA is essential for protein production.
Answer:
All proteins contain carbon, hydrogen, oxygen, and nitrogen.
Explanation:
edge
As per the Gerardus Johnannes Mulder’s 1838 discovery, all proteins contain carbon, hydrogen, oxygen, and nitrogen. The correct option is A.
What is Gerardus Johnannes Mulder’s 1838 discovery?Mulder used the descriptor protein in his 1838 document, "On the composition of some animal substances," after Jons Jacob Berzelius suggested it.
He also proposed in the same journal that animals get the majority of their protein from seedlings, which was known as protein.
Mulder was the very first to posit a stipulates the factors that cause distinctions in chemical and physical behavior when revealed to reagents between albumin, casein, and fibrin and other substances more or less similar to them.
All proteins, according to Gerardus Johnannes Mulder's 1838 discovery, contain carbon, hydrogen, oxygen, and nitrogen.
Thus, the correct option is A.
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Look at the chemical reaction below.
Magnesium + hydrochloric acid → magnesium chloride + hydrogen
Mg + 2HCl → MgCl2 + H2
In this reaction:
Magnesium (Mg) is a
Hydrogen (H2) is a
magnesium chloride (MgCl2) is a
hydrochloric acid (HCl) is a
Answer:
In the reaction:
Magnesium (Mg) is a solid metal reactant reducing agent
Hydrogen is a gaseous product (oxidation product)
Magnesium chloride (MgCl₂) is an aqueous product (reduction product)
Hydrochloric acid (HCl) is an aqueous acidic reactant oxidizing agent
Explanation:
The reaction Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂ (g)
The above reaction can be used to demonstrate the reaction characteristic between metals and acid involving the liberation of hydrogen gas
In the reaction:
Magnesium (Mg) is a solid metal reactant
Hydrogen is a gaseous product
Magnesium chloride (MgCl₂) is an aqueous product
Hydrochloric acid (HCl) is an aqueous acidic reactant
Answer:
Mg - reactant
H2 - product
MgCl2 - product
HCl - reactant
Explanation:
the decay cycle: reduces the amount of dead material returns oxygen to the atmosphere
Answer:
true
Explanation:
if this is true or fals its true
The source of ATP and NADPH, which are required to synthesize glucose, is a
A) light independent reaction: glucose breakdown and carbon dioxide
B) light dependent reaction: electron transport and the splitting of water
C) light independent reaction: electron transport in the splitting of water
D) light dependent reaction: RuBP and the splitting of water
Answer:
B) light dependent reaction: electron transport and the splitting of water
Explanation:
The source of ATP and NADPH, which are required to synthesize glucose is a light-dependent reaction.
During the process of photosynthesis, light energy is required to tranport electrons that produces ATP and NADPH and splitting of water, generating O2.
Photosystem I (PSI) absorbs the light energy and electrons supplied from PSII (Photosystem II) are transferred to the protein ferredoxin, which further donates electrons to electron transport chain that produces ATP and to the electron carrier NADP+ to form NADPH.
Hence, the correct option is B.
the advantage to a plant i’m having more than one pigment is shown by the absorption of:
A) Violet and red light by chlorophyl a and blue and orange light by chlorophyl B
B) Violet and blue light by chlorophyl a and orange, and red light by chlorophyl B
C) Violet, blue, green, and red light by carotene
D) Green, and yellow light by chlorophyl a, chlorophyl B, and carotene
Answer:
B) Violet and blue light by chlorophyl a and orange, and red light by chlorophyl B
Explanation:
Chlorophyll is the pigment present in green plants which is used in the process of photosynthesis by trapping solar energy for use. Chlorophyll comprises of two types namely: Chlorophyll A and Chlorophyll B
Chlorophyll A is known to absorb light in the blue-violet region while chlorophyll B absorbs light in red-blue region. These pigments however don’t absorb green light but they instead reflect it. This makes option C and D invalid. The closest option in their properties is however B.
Sample Response: If the electron transport system did not work, electrons from PSII would not be transferred to PSI. Ferredoxin would then have no electrons to transfer to NADP+ so NADPH would not be produced. This would also affect the light-independent reaction of photosynthesis because NADPH is needed in this reaction. What did you include in your response? Check all that apply. Electrons from PSII would not be transported to PSI. PSI would have no electrons to transport to ferredoxin. Ferredoxin would have no electrons to transport to NADP+. NADPH would not be produced. The light-independent reaction of photosynthesis would be affected.
Answer:
Check all of em
Explanation:
Answer: all of them
Explanation:
(: brainlest pls
What could happen if a person doesn’t get the proper amount of protein in his or her diet? The impact of a diet lacking in protein would be of little consequence. Stored proteins would assist in creating new amino acids that the body needs. The body would break down existing muscle to get the amino acids it needs.
Answer:
The body would break down existing muscle to get the amino acids it needs.
Explanation:
If a person doesn’t get the proper amount of protein in his or her diet, then the body would break down existing muscle to get the amino acids it needs, which are present in the last option.
What is the function of proteins?Proteins are made up of building blocks called amino acids; some of these amino acids can be produced by the body, while others must be obtained through the diet, so if a person does not consume enough dietary protein, their body may not have access to enough essential amino acids to build and repair tissues or produce enzymes. As a result, the body may break down muscle tissue in order to obtain the amino acids it requires, resulting in muscle wasting; the immune system may not function optimally; and so on.
Hence, the body would break down existing muscle to get the amino acids it needs, which are present in the last option.
Learn more about the function of proteins here.
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The question is incomplete, complete question is below
What could happen if a person doesn’t get the proper amount of protein in his or her diet? The impact of a diet lacking in protein would be :
of little consequence.
Stored proteins would assist in creating new amino acids that the body needs.
The body would break down existing muscle to get the amino acids it needs.
How does the structure of epithelial tissue help it to perform its function? Its ability to conduct electrical signals allows for control and coordination of body movements. Its fibrous layers allow the tissue to be a strong yet flexible binding agent. Its contractile cells that make up the tissue allow for movement. Its tightly packed cells allow for protection against harmful substances.
Answer:
D or Its tightly packed cells allow for protection against harmful substances.
Explanation:
I got it right on Edge~
Answer:
d
Explanation:
k
3. Because plants don’t have interior or exterior skeletons, they rely on their cell walls to give them structural support. Did you see evidence of this cell structure in plants? How was it different from the animal cells (the blood cells, cardiac muscle, and skin)? 4.The paramecium was the only unicellular organism that Stella viewed through her microscope. All the other organisms were multicellular. How was the unicellular specimen different from the multicellular organisms? 6. Why do you think electron microscopes allow for greater magnification than compound microscopes?
Answer:
3. Plant cells are arranged in tight squares due to their cell walls and are filled with water. These characteristics give the plant a structural support.
11. If a caterpillar eats a seedling in your garden, the caterpillar is acting as a
A. disease.
B. primary producer.
C. parasite
D. predator
Answer:
D. predator
Explanation:
A predator is an organism that eats or kills another organism in a biologic environment. The caterpillar is consuming the seeds in the garden, thus acting as a predator.
Answer:
It will be B primary producer Hope this helps
Explanation:
Hydrogen bonding map.What goes in the rest?
Categorize Different Foods Categorize the food items below by selecting which macromolecule they are known to contain. apple steak celery olive oil potato avocado egg
Answer:
The correct categorization of the listed food items would be:
Carbohydrate: apple, celery, potato
Protein: Steak, egg,
Fat: Olive oil, avocado.
The four major macromolecules are carbohydrates, proteins, lipids, and nucleic acids.
Foods like apple, celery, and potato are rich in carbohydrates.
Foods like chicken, meat, eggs, et cetera are rich in proteins.
Similarly, foods like olive oil, mustard oil, butter, et cetera are rich in fats or lipids.
Explanation:
Answer: apple- carb; steak- protein; celery- carb; olive oil- lipid; potato- carb; avocado- lipid; egg- protein
Explanation:
Fruit and veggies are mainly made of carbohydrates because that is the storage and structural components they use (think glucose, cellulose, starch, etc.); Steak is a meat, and meat is technically muscle- muscle is built from protein; Olive oil and avocado are lipids because they are considered fats; Egg is protein because it is an animal by-product, and contains many amino acids, which build up proteins.
Most of Earth's volume is contained in the
O lithosphere
O crust
O asthenosphere
O mantle
Answer:
mantle
Explanation:
The mantle takes up most of the Earth's volume. The mantle makes up 84% of the Earth's total volume.
Answer:
Mantle
Explanation:
The mantle is the mostly-solid bulk of Earth's interior. (1802 miles) thick, and makes up a whopping 84% of Earth's total volume. That allows the crust to “float” on the sometimes more malleable mantle.
Have a good day and stay safe!
What can plant fossils reveal about the area in which they are found? Question 3 options: A. The air pressure and ocean currents at the time the plant was living B. The type of animals that were present at the time the plant was living C. The types of rocks and minerals in the area at the time the plant was living D. The climate/temperature at the time the plant was living
Answer:
i think option B is correct answer because plants also gets nutrient from the animal so , there is more chance to get the information about the animals that were found in that area and time.
hope it helps..
ASAP/WILL GIVE BRAINLIEST: Who is responsible for the deforestation in Borneo due to palm oil plantations?