Answer:
Explanation:
Phloem
A streak plate may be used to identify which mineral property? (1 point)
O color
O luster
O cleavage
O tenacity
Answer: Color.
Explanation: The rock is dragged against the plate to show its true colors instead of its visible external colors.
Cell Length of one side Area of one side of the cube (l × w) Surface area (area of one side × 6 sides) Volume (l × w × h) Surface area / volume Ratio of surface area to volume (for example, 5:1) A 1 cm B 2 cm C 3 cm
The complete question is as follows:
1. What does a surface area/volume ratio of 6:1 mean for the cell’s ability to get the materials it needs that move across its surface?
2. What does a surface area/volume ratio of 3:1 mean for a cell’s ability to get materials across its membrane, compared to the cell with a ratio of 6:1?
Answer:
1 . Surface area to volume ratio = 3 : 1
surface area= 3 cm³ or (l = 1 cm) (1 cm x 1 cm x 3) (W = 3)
volume= 1 cm³ (1cm x 1cm x 1cm)
2. Surface area to volume ratio = 6 : 1
surface area= 6 cm³ or (1 cm x 1 cm x 6 ) (w= 6)
volume= 1 cm³
Diffusion increases with the increase in surface area to volume ratio through the semi-permeable membrane of the cell membrane that allows substances to move into the cytoplasm
i need this i am doing a finals review.
Answer:
B. Evaporation
Explanation:
Only the water cycle involves plants and animals. Please select the best answer from the choices provided T F
Answer:
This is False. Hope this helps!!!
Explanation:
pasteur's experiment provided conclusive evidence to reject the spontaneous generation hypothesis, which states that cells arise from nonliving material. as a consequence, his results supported the all-cells-from-cells hypothesis. which element of pasteur's experimental design was most important and why? see section 1.2 (page) .
The Experiment name is 'swan neck flask'.
Since only one of his two treatments employed the same type of nutritious broth and flask, only one of his two treatments was exposed to preexisting cells.
Nutrient Broth- A common culture medium for undemanding microorganisms is nutrient broth. Numerous standardized techniques for analyzing meals, dairy products, water, and other items advocate it.
Pre-existing Cell- All cells originate from previously existing cells, according to the third component of the cell theory definition. This implies that cells are not created spontaneously, as the term "spontaneous genesis" implies. Current cells are constantly used to create new ones.
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in at least one group of fish, osteichthyes, a structure known as a swim bladder was modified to become a primitive lung.
True. In at least one group of fish, osteichthyes, a structure known as a swim bladder was modified to become a primitive lung.
what is osteichthyes?Fish belonging to the taxonomic order Osteichthyes, also known as the "bony fish," have skeletons that are predominantly made of bone tissue. In contrast to them, the Chondrichthyes have skeletons that are predominantly made of cartilage.Jawed fish belonging to the osteichthyes order have a bony endoskeleton. It is the largest group of vertebrates and has a wide variety of freshwater and marine bony fishes.Lungfish, salmon, clownfish, and eels are four examples of Osteichthyes. Along with coelocanths, lungfish belong to the class subclass Sarcopterygii. The subclass Actinopterygii includes the fish that most people are familiar with, such as salmon, clown fish, eels, and fish.Learn more about osteichthyes here:
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A population of 5000 long-horn beetles lives in a tract of forest. What variables would affect the rate at which the population increases or decreases?
Answer: Weather, food competition
The variables that would affect the rate of the population whether it is increase or decrease are as follows;
Environmental conditions.Competition with other organisms. Available resources like food and space.What do you mean by Population?A Population may be defined as a group of individuals belonging to the same species living in the same area at a definite given time.
Environmental conditions vary from place to place which directly affects the rate of the population by influencing the relative fitness of organisms. The competition also inhibits the fitness and survivability of organisms.
It may be intraspecific and interspecific. While food and space together lead to resources that are available for the organisms in order to reproduce themselves under natural conditions.
Therefore, the variables that would affect the rate of the population whether it is increase or decrease are well described above.
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investigating the relationship between reopening the economy and implementing control measures during the covid-19 pandemic
There is great relationship between reopening the economy and implementing control measures during the covid-19 pandemic.
What is the relationship between reopening the economy and implementing control measures?There is great relationship between reopening the economy and implementing control measures during the covid-19 pandemic because if the control measures are implemented correctly then the reopening of economy is a good decision. Due to this, we can carried out the economic activities without any fear of the pandemic.
So we can conclude that there is great relationship between reopening the economy and implementing control measures during the covid-19 pandemic.
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in a chemical reaction bonds in the reactants molecules are broken and new bonds are formed to yield products. how does an enzyme make this happen an optimal rate in a cell?
Answer:
A. It increases the amount of energy needed to break the bonds in the substrate.
Explanation:
Enzymes are known to be protein-based catalyst. It helps to speed up the chemical reactions that take place in the human body. They actually bind molecules and work in ways to alter chemical reactions. These enzymes are needed for food digestion, reproduction, healing diseases, blood coagulation, etc.
Enzymes help to increase the rate of reaction by lowering the activation energy. Certain enzymes can work to convert substrate to product at million of times faster. As a catalyst, it increases the energy needed to break bonds found in the substrate. This makes the reaction to occur at a faster rate.
you where these terms were introduced.
1. Describe the difference(s) between the
following terms.
(a) concentrated and dilute (4.1)
(b) acid and base (4.2)
Answer:
A. concentrated is the substance on its own, dilute is the substance mixed with (diluted) water.
B. an acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions (in aqueous solution, donates electrons and accepts protons)
Explanation:
Which of the following is NOT a benefit of fertilizer?
enriches the soil with nitrogen, potassium, and phosphorus
O nourishes plants to encourage rapid and healthy growth
O prevents need to abandon fields and clear land for new ones
allows farmers to grow plants using very little soil
Answer:
Allows farmers to grow plants using very little soil
Explanation:
Fertilizer helps us to return the nutrients to the soil for new or current plants to grow. These nutrients were spent by the plants that were there or the soil was not that rich with nutrients, to begin with. It will not replace soil and growing plants without soil is called hydroponics. Fertilizer is very useful in agriculture currently and most likely will continue to be a good way to grow plants for a while.
Answer: The correct answer is allows farmers to grow plants using very little soil
Explanation: This answer has been confirmed correct.
In a forest ecosystem, wolves hunt and eat deer. What would happen to the ecosystem if a large number of wolves were hunted and killed by humans? Choose the two correct answers. A. The number of deer would increase. B. The number of deer would decrease. C. The vegetation in the forest would increase. D. The vegetation in the forest would decrease. E. The vegetation in the forest would stay the same.
Answer:
The correct answer would be -
A. The number of deer would increase
D. The vegetation in the forest would decrease.
Explanation:
If a large number of hunters or predators are removed from an ecosystem, then there will be, the change that will be found would be increase in the numbers of the prey in the ecosystem. Due to this increase in the numbers of prey the food resources would decrease.
In the given case, the number of deers will increase in absence of enough predators which will lead to overgrazing that will decrease the vegetation in the ecosystem.
Answer:
A+D
Explanation:
If all the wolves were killed then the deer would not die so the number of deer would increase, what does increase mean? increase means that the number of something grows, and decrease means that the number of something would lower and lower until there are none left, or extinct
Cassandra notices that when she breathes on a cool window, the water vapor in her breath forms liquid water. What happens to turn the water vapor in her breath into liquid water?
Heat is added to the water vapor from the surrounding air.
The temperature of the water vapor increases as it leaves her body.
The water molecules become more spread apart as they touch the window.
Heat leaves the water vapor as it touches the cool window
Answer:
Heat is added to the water vapor from the surrounding air.
Explanation:
Hope this helps ;)
What is the step of cell division where 2 identical daughter cell are formed?
Answer:
It's MITOSIS.
Explanation: We are also learning about this in class.
During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. Mitosis itself consists of five active steps, or phases: prophase, prometaphase, metaphase, anaphase, and telophase.
In mitosis of the cell cycle, a eukaryotic cell undergo nuclear division followed by cytoplasmic division results form two genetically identical daughter cells. Mitosis It consist of five phases: prophase, prometaphase, metaphase, anaphase, and telophase.
What is mitosis ?The process in which somatic cell undergo equational division where equal number of daughter cell produced from their parent cell.
Here the number of chromosomes remains the same, except in the case of germ cells where the number of chromosomes become half and the nucleus of a cell is divided into two nuclei having equal amount of genetic material.
nuclear division is followed by cytoplasmic division after the separation of the nucleus. It is important for the growth of the cells and the replacement of worn-out cells.
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How do you determine a average velocity from t=0s to t=12s
Do animal cells always have to be placed in isotonic solutions? Why?
Explanation:
because If a cell is placed in an isotonic solution, there will be no net flow of water into or out of the cell, and the cell's volume will remain stable
Read through the list of organisms below. Of the organisms below, which ones are autotrophs? . aquatic photosynthetic bacteria a blue whale cheetah green-winged macaw honeybee humans maple tree phytoplankton rye grass tulips
Answer:
aquatic photosynthetic bacteria, maple tree, phytoplankton rye grass tulips
Explanation:
All are plants or does phtosynthesis which is what autotrophs are.
A mutation can cause a defect in human hemoglobin. Which would result in this type of mutation?
Answer:
Decreased ability to carry oxygen. -a result in this type of mutation.
Answer:
There would be a decreased ability to carry oxygen, there will be development of cancer tumors, and there would be an inability to break down sugar development of bacterial infections.
Explanation:
Which term includes the living and nonliving things in an area?
A. ecosystem
B. chemosynthesis
C. climate
D. hierarchy
Answer:
A.
Explanation:
It seems most likely.
What are the 3 main things in a nucleus
Answer:
The nucleus consists of the following main parts: (1) Nucleolemma or nuclear membrane (karyotheca) (2) Nuclear sap or karyolymph or nucleoplasm (3)
Explanation:
Answer:
1. The nucleus; 2. Nuclear Lamina; 3. Nucleoplasm;
Explanation:
Reindeer roam over hundreds of miles to search for food the have a far reaching
A-Niche
B- Habitat
C- Community
D- Ecosystem
Answer:
B. Habitat
Explanation:
Ecosystems are geographical regions made up of biotic factors (plants, animals, bacteria) and non-living or abiotic factors (rocks, rainfall, temperature).
They live in groups called communities within their ecosystem and occupy a specific place in their community, a niche - here, they contribute to nutrient cycling and energy flow. They may often wander in search of food, or shelter in a region known as a habitat.
the prompt: the diagram above shows how carbon is cycled through the environment. what two processes are most important in maintaining this cycle? make sure your claim is supported with evidence and reasonable. include a rebuttal in your response.
In the environment, the carbon cycle is maintained by two different processes, such as photosynthesis and the decomposition of dead organisms. The carbon level is balanced in this way.
What is the carbon cycle?The carbon cycle carries out its work in the environment and maintains the level of carbon in the atmosphere, and the major source of the carbon cycle is photosynthesis, where the plants take the carbon dioxide and water and, with the help of sunlight, glucose and oxygen are released. Glucose is a carbon-based food that can be used by both plants and animals for cellular activities, resulting in the release of carbon dioxide. Decomposers release carbon into the soil and the atmosphere after living organisms, such as plants and animals, die, and in this way the carbon cycle continues.
Hence, in the environment, the carbon cycle is maintained by two different processes, such as photosynthesis and the decomposition of dead organisms.
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Assertion -Apical meristem is present at shoot and root tips.
Reason-It helps in the longitudinal growth of plants.
a)Both A and R are true and R is thecorrect explanation of the A
b)Both A and R are true, but R is not the correct explanation of theA
c)A is true, but R is false
d)A is false, but R is true
Explanation:
Apical and intercalary meristems always increase in the height of plant and lateral meristems is responsible for secondary growth (increase in girth) but secondary growth doesn't occur is monocots.
Help with this ASP please
Answer:
Covalent bonds formed by shared electrons between atoms.
Explanation:
a heterotrophic prokaryote would: group of answer choices derive energy from inorganic compounds derive carbon from co2 derive carbon from organic compounds derive energy from sunlight
A heterotrophic prokaryote would derive carbon from the Organic compounds which are present around their environment
Heterotroph are the organism that ought to acquire its carbon in an organic form or an organism that cannot make its very own food and receives its meals with the aid of eating different living things
Chemotroph are the organism that profits power from chemicals , example bacteria
Phototroph are the organism that profits electricity through photosynthesis example - flowers
most of the people of heterotrophic microorganisms are chemoheterotrophs that derive both power and carbon from natural compounds.
heterotrophs is the largest mode of nutrients which includes, saprophytes ( fungi) , parasites ( cuscutta), chemotroph.
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what part of the cell serves to process, package, and export protein?
Biology: For the following fill in the blank questions choose from the following words. Each word may only be used once or not at all: photosynthesis, cellular respiration, abiotic, biotic, primary succession, secondary succession, climax communities, pioneer species, biodiversity, and sustainable.
4. The process by which autotrophs use energy from sunlight to build carbohydrates is called ____________________.
Answer:
photosynthesis
Explanation:
Each cell runs on the chemical energy found mainly in carbohydrate molecules (food), and the majority of these molecules are produced by one process: photosynthesis. Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules.
energy restriction mimetic agents to target cancer cells: comparison between 2-deoxyglucose and thiazolidinediones pdf
There is the use of energy restriction mimetic agents (ERMAs) to selectively target cancer cells which are addicted to glycolysis and could be a promising therapeutic approach.
Thiazolidinediones (TZDs) are synthetic agonists of peroxisome proliferator-activated receptor (PPAR)γ that were developed to treat type II diabetes.
These compounds also display anticancer effects which appear mainly to be independent of their PPARγ agonist activity but the molecular mechanisms involved in the anticancer action are not yet well understood. Results obtained on ciglitazone derivatives, mainly in prostate cancer cell models, suggest that these compounds could act as ERMAs.
2-Deoxyglucose as an energy restriction mimetic agent: effects were on mammary carcinogenesis and on mammary tumor cell growth in vitro.
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Is the answer I choose for this correct
Describe the changes that happen as a cell differentiates to become a specialised cell
Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. ... During cell differentiation, the cell size and shape changes dramatically, as does its ability to respond to signaling molecules.