Choices are:
A. eliminating unnecessary genes
B. healing wounds effectively
C. replacing lost cells, such as shed skin cells
D. preventing communication among cells
Answer:
The answers are letters B and C.
Explanation:
"Multicellular organisms" are those organisms with many cells. Examples of these are kelp and Volvox.
In order for multicellular organisms to grow, they have to undergo a process called "mitosis." This is a type of cell division which allows the number of chromosomes to be maintained (such as the parent nucleus) in the resultant cells (identical cells).
The division aids in the organism's growth and repair, thus wounds are healed effectively. It also allows the replacement of lost cells, such as shed skin cells because the organism can regenerate cells when the need arises.
In contrast to unicellular organisms which uss cell division for reproduction, multicellular organism use cell division for "healing and repair" as well as "regeneration."
The plasma membrane separates the __________ from the __________.
a. cytoplasm; nucleoplasm
b. interstitial fluid; cytoplasm
c. cytoplasm; mitochondria
d. interstitial fluid; blood
Answer: The right answer is a. cytoplasm; nucleoplasm
Explanation:
The plasma membrane separates the cytoplasm from the neucloplasm
what cell structure are needed for photosynthesis and for respiration??
Answer: Chloroplast
Explanation:
Chloroplast is the organelle that is in the plant cell that uses photosynthesis and cellular respiration. I hope this helps!
Answer:
cellular respiration happen in the mitochondria. Mitochondria are the working organelles that keep the cell full of energy in a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.
Where do animal cells get the molecules, such as proteins, that they use for growth, repair and other life processes?
Animals get protein from diet.
Explanation:Proteins are one of the important part of diet which constitute about one fifth of an ideal diet. This proteins are formed of amino acids. There are 20 amino acids in nature, of which 9 are essential amino acids and 11 are non essential amino acids. The non essential amino acids are prepared in our body by enzymes. But the essential amino acids are needed to be supplied from outside via diet to get access to. So proteins are needed to be present in diet.
Answer:
The cells make them from materials the animal takes in from the environment.
Explanation:
Did T. Rex have hair?
Answer:
rex was covered in a coat of downy feathers
Explanation:
Some mammals did have hair but T. Rex mostly had feathers
Answer:
No, they did not have hair
Which vitamins are not stored in body fat, and why?
Explanation:
Water-soluble vitamins (which dissolve in water), such as vitamin C and the B vitamins, are not stored in the body and must be replaced every day.
Answer:
Small amounts of vitamin A, vitamin D, vitamin E and vitamin K are needed to maintain good health. Fat-soluble vitamins will not be lost when the foods that contain them are cooked. The body does not need these vitamins every day and stores them in the liver and adipose (fat) tissue when not used.
1. James Hutton developed the principle of uniformitarianism. Which
of the following statements best describes that principle?
A. It was developed based on observations of living
organisms.
B. Since Hutton was a geologist, the principle had no
influence on Darwin's work.
C. It proposed that the processes that shaped Earth in the
past no longer occur today.
D. It proposed that Earth was shaped by the same physical
processes in the past as it is in the present.
Answer:
D is the correct answer not B or c or a.
Explanation
The principle of uniformitarianism, developed by James Hutton, is best described as the concept that the same geological processes shaping Earth today have also shaped it in the past.
Explanation:James Hutton developed the principle of uniformitarianism. The statement that best describes this principle is: D. It proposed that Earth was shaped by the same physical processes in the past as it is in the present. The principle of uniformitarianism asserts that the geological processes we observe shaping the Earth today, like erosion and sedimentation, have worked in much the same way throughout Earth's history. This idea contradicts the view that the Earth's features were formed by sudden, catastrophic events that do not occur in the present. Hutton's concept strongly influenced Charles Lyell, a friend and influence on Charles Darwin, who applied the principle to his theory of evolution, suggesting that slow and gradual changes in species could occur given enough time, much like the geological processes.
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What additional characteristic (x) belongs in the central section of the above venn diagram? F. Ribosome G. Mitochondria H. Chloroplast J. Endoplasmic reticulum
Explanation:
F. Ribosome
Around the endoplasmic reticulum, proteins are transported. The Endoplasmic Reticulum is a cytoplasmic membrane network. This continuous method not only raises the surface area within the cell but also conducts protein folding, synthesis, and transport.
Further Explanation:
Free ribosomes synthesize most proteins that operate in the cytosol (such as actin) or nucleus (such as DNA polymerase). Proteins that act within the endomembrane system (such as lysosomal enzymes) or those that are intended for cell secretion (such as insulin) are synthesized in the rough endoplasmic reticulum ER by bonded ribosomEs.
The rest of the ER that doesn't include ribosomes is called the smooth ER, and may contain lipids, enzymes, and other proteins. The first amino acids in the that polypeptide chain serve as a signal sequence as a protein bound for the endomembrane system is being synthesized by a ribosome. The signal sequence ensures that the ribosome binds to the ER's outer membrane and the protein gets into the ER lumen.
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the basic unit of matter is the molecule true or false?
Answer:
False.
Explanation:
The basic unit of matter is the atom.
Answer:
false
Explanation:
basic and structural unit of matter is atom
What is true of mass extinctions?
A All life on Earth dies when a mass extinction happens
B In each mass extinction, over 50% of animal species died.
C Mass extinctions happen frequently.
D There is no evidence for past mass extinctions.
Answer: I think the answer is B
Explanation:
Answer:
b
Explanation:
mostly 99% of all species die
root vegetables, such as carrots, are classified as what type of of root system?
a. fibrous root system
b. nutritious root system
c. dermal root system
d. taproot system
Answer and Explanation:
root vegetables, such as carrots, are classified as what type of of root system? taproot system.Taproot system is one of the three major types of rooting systems found in plants including adventitious root system and fibrous root system. Taproots arise from the radicle of a germinating embryo. The radicle of many plant species dies soon after maturation and, hence, the taproot gets converted into the fibrous root system in the later stages.
Answer: d Taproot system
Explanation:
in multicellular organisms, life begins as a single cell until blank occurs
In multicellular organisms, life begins as a single cell until fertilization occurs.
Explanation:
In a multicellular organism, the gametes, that is haploid (single-celled n) eggs (female) and sperm cells (male) are fused by fertilization to form the zygote (2n). The zygote then undergoes several cycles of divisions to become an embryo and then foetus. After gestation, a full multicellular organism is formed.
All multicellular organism are started from single cells or germ cells from each parent.
How will you prove that the food stored in leaves os starch
Answer:
To prove the food stored in leaves is starch "we will use a iodine indicator, if the leaf turn blue-black then it is confirmed that the leaf has starch. "
Explanation:
To prove the stored food in leaves is starch, first we will take a leaf, then we will treat the leaf in hot water followed by alcohol. The leaf will die when comes in contact with hot water and the alcohol will help us in the break down of the chlorophyll. Which will fade the green color. Now, we will put iodine, which we use as an indicator in the leaf, when it turn blue-black, it is confirmed that starch is present in the leaf. Sometimes the leaf will turn reddish brown, which depicts the absence of starch.
In your own words Describe how autotrophs and heterotrophs obtain energy. please this answer must be at least 150 words any one will answer it I will mark it as brainliest.
The autotrophs are the primary producer in the food chain and they are the ones who initiate the food chain. They produce food by using sunlight or sometimes chemical energy or reactions. They primarily use carbon dioxide, sunlight and water to form sugars or carbohydrates which become their energy source. They use the process of photosynthesis or chemosynthesis to generate food. Examples of autotrophs are green plants, green algae, bacteria.
Heterotrophs cannot make their food via sunlight or other inorganic sources and hence are dependent on the autotrophs or other animals. The heterotrophs have been ranked as secondary and tertiary consumers and cannot be producers. They consume the organic products made by autotrophs to obtain energy for various metabolic and biological activities. The heterotrophs can be herbivore, carnivore, fungi, parasitic plants.
Some are photo-hetrotrophs, who use light as energy but cannot use carbon dioxide as the carbon source since they cannot fix the carbon like autotrophs.
define photosynthesis
Answer: Photosynthesis is process of green plants and organisms use sun or UV light to synthesize from CO2 (carbon dioxide) and water to make food. Usually producing green pigment called chlorophyll (what makes leaves green) and oxygen as a byproduct which they do not need.
Explanation:
Photosynthesis is the process by which a plant uses carbon dioxide, water, sunlight, and minerals in the soil to create food.
(in the simplest matter)
Two grizzly bears are fighting over a fish to feed themselves l. What kind of interaction is this scenario, which works as a limiting factor in a bears survival? 1.) apparent competition 2.) interference competition 3.) exploitation competition 4.) mutualism
Answer:
its interference compettion
Explanation:
why can’t the mice population go over 400 in the hoots woods
Answer:
They might mess up everything
Explanation:
they might
D. Infrared light
5. Which electromagnetic wave produced by celestial bodies passes freely though Earth's atmosphere?
A. Ultraviolet light
Answer:
A. Ultraviolet light
Explanation:
Ultraviolet light
How does a chemical reaction obey the law of conservation of matter?
A)The same number of reactant particles as product particles are involved in the reaction.
B)The same total number of chemical bonds are in the reactants as are in the products.
C)The same number of molecules appear in the reactants as appear in the products.
D)The total mass of the reactants is equal to the total mass of the products.
Answer:
D)The total mass of the reactants is equal to the total mass of the products.
Explanation:
Law of conservation of energy states that matter can neither be created nor be destroyed but it can change from one form to another.
In a chemical reaction, the total mass of the reactants and the total mass of products remains the same. The same amount of matter ends up in the product as was the total mass in the reactants. The conservation of mass will be depicted in a balanced chemical equation.
The correct answer is D) The total mass of the reactants is equal to the total mass of the products.
The law of conservation of matter states that matter cannot be created or destroyed in an isolated system. This means that the mass of the reactants at the beginning of a chemical reaction must be equal to the mass of the products at the end of the reaction. The law does not require that the same number of reactant particles, the same total number of chemical bonds, or the same number of molecules be present in the reactants and products. Instead, it is the total mass that remains constant.
For example, consider the chemical reaction where 2 hydrogen gas molecules (H2) react with 1 oxygen gas molecule (O2) to form 2 water molecules (H2O). The balanced chemical equation is:
[tex]\[ 2H_2 + O_2 \rightarrow 2H_2O \][/tex]
In this reaction, 4 hydrogen atoms (2 molecules of H2) and 2 oxygen atoms (1 molecule of O2) react to form 2 water molecules, each containing 2 hydrogen atoms and 1 oxygen atom. Although the number of molecules and the number of chemical bonds change during the reaction, the total mass of the reactants (4 hydrogen atoms + 2 oxygen atoms) is equal to the total mass of the products (2 water molecules, each containing 2 hydrogen atoms and 1 oxygen atom).
Therefore, the conservation of mass is upheld, as the mass of the reactants is equal to the mass of the products, which is the essence of the law of conservation of matter.
what aparatus do i need to test is a potato tuber cell conains chloroplasts
Potato tuber cells do not contain chloroplasts as they are grown inside the soil so no sunlight is required so no chloroplasts.
Explanation:
Instead of chloroplasts potato tubers consists of amyloplasts. In all plant cells, plastids are always there. They are required as it is the place where amino acids and fatty acids are made. Amyloplasts are the place of starch synthesis in non-green plants.
If you place the potato tuber in sunlight the amyloplast may get converted to chloroplasts.
A hand-held SPAD-502 plus chlorophyll meter device is to check the chloroplasts.
identify the gland and hormone(s) affected by oophorectomy
The hormones affected by oophorectomy are estrogen and progesterone.
The gland affected by oophorectomy is the pituitary gland.
Explanation:
Oophorectomy is a procedure to remove one or both ovaries. It is done to prevent ovarian cancer or endometriosis.The ovaries make most of the body's estrogen. when ovaries are removed there will be a sudden drop in the estrogen levels. To tackle it, estrogen therapy is given.Due to the disruption of the Hypothalamus ovary connection. the Pituitary gland produces more Follicle-stimulating hormone (LSH), Luteinizing hormone (LH), Gonadotropins.Using the terms hypertonic and hypotonic, describe the osmotic relationships of the solution within the dialysis bag versus the solution outside the bag.
Explanation:
By osmosis, due to the difference in osmotic pressure on either side of the membrane, the water passes through the membrane, which means that the water moves from high osmotic pressure / concentration regions to low pressure / concentration regions to a stable state. Thus, water moves from hypotonic regions (low solute concentration) to hypertonic regions (high solute concentration).
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In biology, osmosis is the diffusion of water across a semipermeable membrane. A hypertonic solution has a higher solute concentration, causing water to move into the bag. A hypotonic solution has a lower solute concentration, causing water to move out of the bag.
Explanation:Hypertonic and Hypotonic SolutionsIn biology, osmosis refers to the diffusion of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. When comparing the solution inside the dialysis bag and the solution outside the bag, we can determine their osmotic relationships.
Hypertonic SolutionA hypertonic solution has a higher solute concentration compared to the solution it is being compared to. If the solution inside the dialysis bag has a higher solute concentration than the outside solution, it is hypertonic. In this case, water will move from the outside solution into the dialysis bag, causing the bag to swell or gain water.
Hypotonic SolutionA hypotonic solution has a lower solute concentration compared to the solution it is being compared to. If the solution inside the dialysis bag has a lower solute concentration than the outside solution, it is hypotonic. In this case, water will move from inside the dialysis bag to the outside solution, causing the bag to shrink or lose water.
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Summarize how the climate of the Miocene epoch impacted the evolution of hominins
Answer with Explanation:
The Miocene epoch was deeply characterized by seasonal conditions, such as having more colder winters in the northern areas.
In the late Miocene, open vegetation system expanded. These included grasslands, woodlands and shrublands. As a result, more primates inhabited the area. Several habitats became diverse from each other, thus allowing the species to adapt, including their locomotion. For example, the species who used to live on trees, turn towards living on land (terrestrial life). Certain animals also came about such as pigs, giraffes, monkeys, etc. Scavenging hominins also scattered. When it comes to hominins, a major type of locomotion evolved called "bipedalism." This allowed the hominins to walk using the lower limbs (two feet).
Answer:
The Miocene epoch was deeply characterized by seasonal conditions, such as having more colder winters in the northern areas. In the late Miocene, the open vegetation system expanded. ... As a result, more primates inhabited the area.
Explanation:
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imagine you are a marine scientits. which of the following organisms would you warn people to avoid eating due to the risk of high levels of toxins in their bodies as a result of biomagnification
A. Algae
B. Phytoplankton
C. Small fish
D. Sharks mom
Eating sharks will be of maximum risk.
Option D.
Explanation:Biomagnification is a phenomenon where a toxin which is present in the environment is taken by smaller organisms and the concentration of toxins increase in concentration in higher tropic levels.
Suppose a toxin is present in sea water. It's taken by the small algae along with water which isn't metabolized by the algae, but stored in their body. Now these algae are consumed by small phytoplankton which consume a lot of algae, and the toxin present in their body, which again gets stored due to no metabolism. This even increases into smaller fishes, larger fishes and then into shark which has the maximum toxin concentration. So consumption of sharks will be of maximum health risk.
PLZ HELP!!!
if the secondary consumer level of a trophic pyramid has 1000 kcal of energy, how much energy is required by the primary consumers to support this pyramid
A. 10 kcal
B. 100 kcal
c. 10,000 kcal
PLZZZZZZZZZZZ IM BEGGING YOU
The primary consumers require 10,000 kcal of energy to support the secondary consumer level that has 1000 kcal, based on the 10 percent energy transfer efficiency between trophic levels.
If the secondary consumer level of a trophic pyramid has 1000 kcal of energy, the amount of energy required by the primary consumers to support this pyramid is significantly higher due to the energy lost at each trophic level. According to ecological principles and the research conducted by Howard T. Odum in the Silver Springs ecosystem, there is a roughly 10 percent efficiency in energy transfer between trophic levels. Therefore, if the secondary consumers have 1000 kcal, then the primary consumers need 10 times that amount to maintain that level of energy, which is 10,000 kcal.
Hence, the correct answer is c. 10,000 kcal.
Which model of the universe did the ancient Greeks believe to be correct. This is for the subject of earth science
Answer:
The Greeks believed in the geocentric model of the universe.
According to this model, the Earth was present in the center whereas the Sun, moon, other planets etc revolved around it. According to Plato, the Earth was spherical in shape and it did not move. Greek philosophers, such as Aristotle and Plato, believed the Earth to be the center of the universe. All other heavenly bodies orbited around the Earth according to the Greek philosophers.
In which way does mining help society?
O
A. A single mine can dispiace wildlife for decades.
O
B. Minerals and energy resources are extracted.
O
C. Underground mining can be dangerous for workers.
O
D. Mines produce waste materials that enter ecosystems.
SUBM
Answer:
Explanation:
The only answer that helps society is B
Minerals and energy resources are extracted.
Answer:
B. minerals and energy resources are extracted
Explanation:
i just took it
Increasing _______ the weights ofdistance betweenacceleration ofmasses of two objects will cause the gravitational force between the objects to decrease.
A. weight of
B. distance between
C. Acceleration of
D. masses of
1. True or False: Bacteria are larger than human cells.
lisa
Fe
True
False
Bacteria are smaller than human cells. So the statement is false.
What is the size of a bacterial cell?Bacteria and archaea are classified under the domain prokarya. They are unicellular organisms found in a wide range of extreme environments.
Bacteria are known to exhibit a variety of shapes and sizes. Bacteria also vary in their way of an arrangement with their colony of bacterial cells.
Bacteria are mostly microscopic but some bacteria, large enough to be visible by the unaided eye have been observed. The size of bacteria generally ranges from 0.2 to 2.0 micrometers. The size of bacteria is a very important factor in their survival.
Bacteria are able to thrive in a variety of microenvironments due to their small size. The size of bacteria also contributes to their parasitic nature.
The high surface area to volume ratio allows them to take as many nutrients as possible.
Therefore, bacterial cells are smaller than human cells and the statement is false.
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Which of the following is the best description of a prediction?
O
A. Your best guess as to what will happen next in a text
O
B. Asking many questions about the different things that you are
reading
O
C. Creating a summary in your head of the reading material
O
D. Making a mental image of what is happening in the text
Apex
A prediction is a forecast based on current knowledge or evidence, and among the choices, 'Your best guess as to what will happen next in a text' is the best description. It's related to a hypothesis but more specific, often taking the form of an if-then statement in scientific contexts. The correct answer to the student's question is option (A).
The best description of a prediction from the options provided is A. Your best guess as to what will happen next in a text. A prediction is essentially a forecast based on current knowledge or evidence. It can take the form of an if-then statement, which is often used in scientific contexts, such as If the student turns on the air conditioning, then the classroom will no longer be too warm. This is because a scientific prediction generally follows the logical structure of an hypothesis testing: if the condition A is true, then result B is expected to follow. However, in the context of reading comprehension, it is more about anticipating future events or information in a text, often without a strict if-then structure.
While hypotheses and predictions are related, a hypothesis is more of an informed speculation that forms the basis of an investigation, whereas a prediction is a more specific guess that can result from a hypothesis and is typically used to suggest what the findings of the investigation will be.
What are the properties of a useful model of global systems
Answer:
"A model that shows global systems, the processes that operate within each system and the ways those systems and processes interact."
Explanation:
In the global system mainly four types of models interact or co-ordinate between each other. When we take an example of the ecosystem, these four models can be predation, parasitism and herbivore. Interaction takes place in such a way that one model gets the benefits while the other one gets affected. But when talk about mutualism, both of them gets benefited from the interaction. The basis of the global system property is firstly made by the species interaction.