the atoms, elements, and bonds practice answers are
1.C
2.D
3.D
4.D
5.D
6.B
7.B
8.D
hope this helps
Which type of cell is a stomach cell?
what organelle breaks down and recycles worn out cells?
Lysozyme organelle breaks down and recycles worn out cells.
What is Lysozyme?A naturally occurring enzyme called lysozyme can be found in bodily fluids such milk, saliva, and tears. By cleaving the peptidoglycan component of bacterial cell walls, which results in cell death, it acts as an antibacterial agent.
Subtherapeutic doses of antibiotics, which are also antimicrobials, have been given to pigs to encourage development.
Pig farmers profit from these substances because they reduce production losses by improving feed efficiency and reducing susceptibility to bacterial infection and disease.
Therefore, Lysozyme organelle breaks down and recycles worn out cells.
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What are three functions of a starfish's water vascular system?
The water vascular system of a starfish has three main functions: gas exchange, circulation of nutrients and waste, and locomotion.
Explanation:A starfish's water vascular system has three main functions:
Gas exchange: The water vascular system allows for the exchange of gases, such as oxygen and carbon dioxide, between the starfish and its environment. This is important for respiration.Circulation of nutrients and waste: The system helps circulate nutrients and remove metabolic waste products throughout the starfish's body.Locomotion: The water vascular system powers the starfish's tube feet, which it uses for slow but powerful movement. By expanding and contracting the chambers within the system, the starfish can control the extension and retraction of its tube feet, allowing it to walk and pry open shells.Learn more about functions of a starfish's water vascular system here:https://brainly.com/question/31445523
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Among apples, cherries, oranges, and watermelons, a serving of which fruit would raise the level of sugar in blood by the least amount?
Answer:
The answer is: Cherries.
Explanation:
The glycemic index is a numerical value that is assigned to a food to describe the glycemic response our body has after its consumption. That is, the higher the glycemic index, the higher and faster elevation of blood glucose produces a food after consumption.
Top 10 fruits with lower glycemic index -40
Cherries (22)
Plums (24)
Grapefruit (25)
Peach (28)
Prunes (29)
Dried apricots or apricots (30)
Fresh Apricot (34)
Pears (37)
Apples (37)
Plums (39)
The answer is: Cherries.
What is the difference between a chlorophyte and a charophyte?
How is renewable fuel use expected to change in the next decade?
A blood bank asserts that a person with type O blood and a negative Rh factor (Rh−) can donate blood to any person with any blood type. Their data show that 49% of people have type O blood and 15% of people have Rh− factor; 45% of people have type O or Rh− factor. Find the probability that a person has both type O blood and the Rh− factor.
Answer:
Probability of a person having both type O blood and the Rh− factor is [tex]19[/tex]%
Explanation:
The probability of a person having O blood group is [tex]0.49[/tex]
The probability of a person having Rh- factor is [tex]0.15[/tex]
The probability of a person having either O blood group or Rh- Factor is [tex]0.45[/tex]
Hence, As per the additive rule of probability
Probability of event A and B together [tex]=[/tex] Probability of A [tex]+[/tex] Probability of A [tex]-[/tex] probability of either A or B
Here event A is occurrence of O blood group
event B is occurrence of Rh- factor
Substituting the given values in above equation, we get -
Probability of a person having both type O blood and the Rh− factor [tex]= 0.49 + 0.15 -0.45\\= 0.19[/tex]
Which plant structure found in lower plants produces gametes
The plant structure in lower plants that produces gametes is called gametangia.
Explanation:The plant structure in lower plants that produces gametes is called gametangia. In nonvascular plants such as mosses, liverworts, and hornworts, the gametophyte plant produces archegonia, which produce eggs, and antheridia, which produce sperm. These structures are typically found in the midst of modified 'leaves' at the ends of stems or branches.
Colorado has a vast population of lodgepole pines. A population of lodgepole pines have been killed in a section of the forest. What is a possible limiting factor of that population? devastation by the pine bark beetle Colorado’s long history of acidic soils genetic variability shallow root system
The correct answer is devastation by the pine bark beetle.
The pine bark beetles are very common pests, which are found on the pine trees of the Colorado. These beetle feed on the bark of the pine trees, which result in the loss of nutrition and trees becomes dead. In the given case, the attack of the pine bark beetle can be the reason for death of the pine trees and limiting factor to the population.
1. When we perform an experiment, we
a. measure independent variables,
b. produce dependent variables.
c. produce control variables.
d. produce a comparison.
e. hold independent variables constant.
Which of the following is most likely to move through the cell membrane by facilitated diffusion? A. Small lipids, B. 02, C. C02, C. Na+
The process of a parent cell dividing into a large number of genetically identical cells all at once is known as _____ .
Final answer:
The process where a cell divides into many genetically identical cells all at once is called multiple fission, while mitosis refers to the division producing two identical daughter cells.
Explanation:
The process of a parent cell dividing into a large number of genetically identical cells all at once is known as multiple fission. While the cell division in somatic cells, where a parent cell divides to produce two genetically identical daughter cells, is called mitosis, the process of multiple fission can produce more than two daughter cells. It is a form of asexual reproduction observed among protists and other single-celled organisms. However, binary fission is another type of cell division typical in prokaryotic organisms like bacteria, where the parent cell splits into two daughter cells. Despite the difference in the number of cells produced, both binary fission and multiple fission result in offspring that are genetically identical to the parent.
Organisms that live in the rainforest have developed unique adaptations that aid in their survival. Which of the following plants could be described as a predator?
a.
bromeliads
b.
lianas
c.
fungal hyphae
d.
pitcher plants
Answer:
d
Explanation:
how do you valves help circulate blood through heart
Answer:
Valves allow one–way circulation of blood so that it does not flow back.
Explanation:
i got it right when i took the test
Transports water and sugars in a plant
a.) non-vascular tissue
b.) vascular tissue
Answer:
b vascular tissue
HEEEELPPP!!!:(
of all the organelles in the cell, which has the strongest analogy to the function of a factory? which has the weakest?
The organelle identified in the picture as #10 helps the cell maintain homeostasis in what way? This organelle is the smaller white circularly shaped organelle found in the top middle of the image.
Water is unusual because it expands as it freezes. Very few substances have this property. The reason liquid water is more dense then ice can be best explained by? A) water is the universal solvent. B) Water has an unusually high boiling point. C) Water contains elements that are not common in other substances. D) Water is polar and the positive and negative ends of the molecule attract each other.
The correct answer is option D) Water is polar and the positive and negative ends of the molecule attract each other.
The water is a polar molecule, and forms a hydrogen bonding with the other water molecule. In the liquid state, the molecules of the water is in random motion, and the bond between the water molecules are continuously formed and deformed.
In the ice, the hydrogen bond between the water molecules become more stable, due to this, the molecules arrange themselves in a hexagonal pattern. Due to this arrangement, the allover space occupied is expanded. Hence, the ice is expanded than liquid water.
The ATP molecule can be considered a form of chemical energy because
A. It stores the energy from the glucose in the bonds between the phosphate groups
B. It has a five carbon sugar like RNA
C . It takes in light energy from the sun
D. It is a form of fat
Answer: D
Explanation:
Which of the following is an agricultural science that deals with crop production and improvement.
Genetics
Biology
Botany
Argonomy
The correct answer is Agronomy.
Agronomy is a branch of agriculture science which deals in crops and the related soils. It is actually integration of many sciences. How to grow crops effectively and profitably without damaging environment and judicious use of natural resources are dealt in agronomy. Agronomy also develops techniques for the better use of soil and increase the food production.
What is the definition of zygote??
A zygote is a fertilized ovum, or egg, that forms when a sperm cell merges with an egg cell during conception. This single-cell structure is diploid, which means it contains two sets of chromosomes - one from each parent - amounting to the full number of chromosomes necessary for a human being.
The genetic composition and sex of the zygote are determined at the moment of conception, as half of the 23 chromosomes from the sperm join with half from the egg, totaling the 46 chromosomes required for a complete human genome. The zygote then undergoes a process of cell division, known as mitosis, multiplying and developing from a one-cell structure into the billions of cells that make up a human body. The zygote’s journey from fallopian tube to uterus is critical, and it must attach to the uterine wall to continue development. Throughout mitosis, the zygote's cells differentiate into the various organs and tissues that form the developing organism in a pattern decided by the genome. This developmental stage is critical, and not all zygotes survive it. Those that do, proceed to the next phases of embryonic and then fetal growth, culminating in the birth of a new human being.
A car travels a total of 400,000 meters. How many kilometers did the car travel?
A) 0.4
B) 4
C) 400
D) 4,000
Answer:
C)
Explanation:
400 kilometers the car traveled.
1 km = a 1000 mt. So, with that in mind, 400,000 meters is equal to 400 kilometers.
400,000/1000 = 400
Show the sequence of the base in your DNA molecule in the space provided below
Mario at lab table A needs a pair of forceps (tweezers). Max at lab table B tosses Mario a pair. In terms of laboratory safety, which best describes Max’s behavior?
Answer:
It is unsafe and can result in someone getting hurt.
Explanation:
An unconformity is a ______ of rock.
1) The genetic material is duplicated
2) Chromosomes move to opposite ends of the cell
3) Chromosomes become visible; the spindle apparatus forms
4) The cell plate forms; the nuclear envelope is formed
5) The chromosomes line up in the middle of the cell
( The Matching Answers to the question above. )
Interphase
Prophase
Telophase
Metaphase
Anaphase
Answer: The matching answers for the question are-
1) The genetic material is duplicated- Interphase
2) Chromosomes move to opposite ends of the cell- Anaphase
3) Chromosomes become visible; the spindle apparatus forms- Prophase
4) The cell plate forms; the nuclear envelope is formed- Telophase
5) The chromosomes line up in the middle of the cell - Metaphase
The cell cycle is broadly divided into two phases- Interphase and M phase. Cell cycle begins with interphase. In this phase, the growth of cell and duplication of genetic material takes place.
This is followed by the M phase. This phase is further divided into Prophase, Metaphase, Anaphase, and Telophase.
In Prophase, chromatin condensation occurs which gives discrete chromosomes. The nuclear membrane breaks down and spindles are formed at the opposite poles of the cell.
In Metaphase, chromosomes line in the center of the cell.
In Anaphase, chromosomes move to opposite poles of the cell.
In Telophase, the cell plate forms; the nuclear envelope is formed from the remnant pieces of nuclear envelope of the parent cell.
After all these changes, genetic content gets divided into two cells.
Answer:
1. Inteph
2. Anaph
3. Metaph
4. Teloph
5. Metaph
in what ways are the daughter cells similar to the parent cells
Which of the following statements best describe a slump?
A. Slippage of a block of material moving along a curved surface
B. Blocks of rock sliding down a slope
C. Rapid flow of water-saturated debris, most common in mountainous areas
D. Slow downhill movement of soil regolith
Answer;
A. slippage of a block of material moving along a curved surface
Explanation;
-A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or rock layers moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface.
-A slump often occurs when water soaks the base of an inclined mass of soil. Slump is a slower process, it happens over time. The difference between a creep and a slump is that a creep moves slowly and gradually while a slump is faster and causes more drastic changes in terrain. A slump is a downward and outward movement of rock, soil or other material.
A slump, in geographical context, is described as 'slippage of a block of material moving along a curved surface.' It is a type of mass wasting where material coherently slides down a slope, resulting in a terraced look.
Explanation:The statement that best describes a slump is 'slippage of a block of material moving along a curved surface.' A slump is a type of mass wasting event that occurs when gravity causes the downward movement of rock, soil, or other earth materials on a slope. In this process, the material moves downward as a large, coherent mass following a curved slip surface often resulting in a terraced appearance.
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Due to the increase in global temperatures, the range of plants and insects is increasing. The negative impact is that they now affect the local organisms in the area and are referred to as ______ species.
Plants and insects expanding into new regions due to global temperature increases are known as Invasive Species. This can upset local ecosystems, such as causing a mismatch in timing between when plants bloom and when their insect pollinators emerge. The impacts of these species can be negative for local organisms.
Explanation:Due to the increase in global temperatures, the range of both plants and insects is expanding, introducing them to new regions. This phenomenon can have negative impacts on local organisms as they compete with or be preyed upon by these new arrivals. The term for these new arrivals is Invasive Species. As a result of global climate change, these species are able to inhabit regions which were previously inhospitable, affecting the local ecosystems and organisms. An example of this can be seen where warmer temperatures have allowed plants to bloom earlier, but if their insect pollinators aren't also emerging earlier, it creates a mismatch in timing which could lead to negative impacts on the ecosystem. This is because in order for these plants to continue to survive, they must flower when their pollinators are present.
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Due to the increase in global temperatures, the range of plants and insects is increasing. The negative impact is that they now affect the local organisms in the area and are referred to as invasive species.
Explanation:The term you're looking for is "invasive species." As global temperatures rise, there is an observed expansion in the ranges of certain plants and insects. These organisms can have a negative impact on local ecosystems as they outcompete native species, disrupt food chains, and modify habitats. Invasive species may also contribute to the decline of native organisms due to changes in phenology, the timing of lifecycle events like flowering and pollination.
The increase in global temperatures affects abiotic conditions, such as temperature and precipitation, which in turn influences the phenology of plants and animals. Earlier flowering times in plants and changes in the life cycles of insects can lead to mismatches in pollination times, potentially causing ecosystem disruption. Additionally, the spread of disease-carrying insects can bring about new health challenges as warmer climates allow these pests to expand their range and accelerate their breeding.
More broadly, climate change not only leads to direct changes in species distributions, but also to indirect effects such as increased competition among species, altering mutualistic relationships such as pollination, and changes in herbivory and seed predation rates. These factors contribute to the complex ways in which ecosystems are being reshaped by the increase in global temperatures, emphasizing the need for careful management and conservation efforts.
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Cathy hypothesized that corn would not grow in mud. To test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. To her surprise, the kernels in the mud grew faster than the kernels in the soil. What error might have caused these unexpected results?
The unexpected results could be due to a disparity in sample size, varying environmental conditions or potentially flawed methods of measurement. Solution: Equalize sample size, ensure consistent conditions, and be clear on what 'growth' means.
Explanation:The unexpected results in Cathy's experiment could be due to several possible errors. First, sample size is a critical factor in any experiment. Cathy put 5 kernels in mud, but only 3 in soil and 2 in water. This imbalance could have skewed the results. Another potential error could be in the environmental conditions. Each type of medium (mud, soil, water) may have different characteristics like nutrient content, moisture level, and exposure to sunlight, which may have influenced the growth of the corn. Furthermore, Cathy's method of measurement could have an impact on the results, depending on how she defined 'growth'. For the future, Cathy should ensure that all conditions are consistent across all groups, except for the one variable she is testing, and increase her sample size. In this case, it would mean planting the same number of seeds in each medium and maintaining similar conditions like sunlight and temperature for all groups.
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