Meiosis (rather than mitosis, which duplicates the cell)
biology is hard i really need help
Answer:
B
Explanation:
I took the test and got thsi question right
Which is an example of a scientist using a physical model to describe a
human heart?
A. The scientist uses a computer to predict how many times a heart
will beat.
B. The scientist calculates the number of times the heart beats each
second.
C. The scientist makes a model of a heart using clay
D. The scientist compares the heart to a mechanical pump.
Answer:
it calculate
Explanation:
it help the scientist calculate the number of times and heart beats each
Savanna climates would be ideal for people who enjoy open plains rather than oceans or mountains, and who also favor a steady climate with a narrow, yearly precipitation range.
Answer:
This is true
Explanation:
Savannas have less precipitation and more warm, consistent weather.
A student conducted an experiment to test whether talking to plants would help them to grow faster. he set up the following two groups: group 1: spoken to and hand watered group 2: not spoken to and watered with sprinklers after three weeks, the plants in group 1 showed much more growth than those in group 2. based on the results of this experiment, which is the best conclusion? they are valid because the student ran a controlled experiment. they are not valid because the student did not control all the variables that can affect plant growth. they are valid because the dependent variable caused a change in the independent variable. they are not valid because the time frame to grow a plant is too short.
From the results in the experiment the best conclusion is : ( B ) they are not valid because the student did not control all the variables that can affect plant growth
Experimental varablesThe growth variables such as amount of light and amount of water need for the plants to grow effectively are not controlled in the experiment. The first group was hand watered while the second group was watered with a sprinkler therfore the amount of water reaching both groups are not the same therefore the experimental conclusion is not valid.
Hence we can conclude that From the results in the experiment the best conclusion is : ( B ) they are not valid because the student did not control all the variables that can affect plant growth.
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Answer:
B on edge
Explanation:
Summary of food pyramids in extreme detail!
Explanation:
The Food Pyramid is a visual representation of how different foods and drinks contribute towards a healthy balanced diet. The Food Pyramid allows individuals the flexibility to choose foods and drinks from each shelf depending on their food preferences. It organises foods and drinks into 5 main shelves, starting from the most important shelf on the bottom.
Shelf 1: Vegetables, Salad and Fruit (at least 5 to 7 servings a day). Base your meals on these and enjoy a variety of colours. More is better. Limit fruit juice to unsweetened, once a day.
Shelf 2: Wholemeal Cereals and Breads, Potatoes, Pasta and Rice (3–5 servings a day, up to 7 for teenage boys and men age 19–50). Wholemeal and wholegrain cereals are best. Enjoy at each meal.
Shelf 3: Milk, Yogurt and Cheese (3 servings a day and 5 from the age of 9 to 18) Choose reduced-fat or low-fat varieties. Choose low fat milk and yogurt more often than cheese. Enjoy cheese in small amounts.
Shelf 4: Meat, Poultry, Fish, Eggs, Beans and Nuts (2 servings a day) Choose lean meat, poultry (without skin) and fish. Eat oily fish up to twice a week. Choose eggs, beans and nuts. Limit processed salty meats such as sausages, bacon and ham.
Shelf 5: Fats, Spreads and Oils (In very small amounts) Use as little as possible. Choose mono or polyunsaturated reduced fat or light spreads. Choose rapeseed, olive, canola, sunflower or corn oils. Limit mayonnaise, coleslaw and salad dressings as they also contain oil. Always cook with as little fat or oil as possible – grilling, oven-baking, steaming, boiling or stir-frying.
Top Shelf: The revised Food Pyramid separates the Top Shelf from the rest of the pyramid. The Top Shelf includes foods and drinks high in fat, sugar and salt. These are not needed for good health and should not be consumed every day. Very small amounts once or twice a week maximum is sufficient.
Answer:
Healthy Eating Pyramid
Healthy Eating Pyramid
Generations of Americans are accustomed to the food pyramid design, and it’s not going away. In fact, the Healthy Eating Pyramid and the Healthy Eating Plate (as well as the Kid’s Healthy Eating Plate) complement each other.
Consumers can think of the Healthy Eating Pyramid as a grocery list:
Vegetables, fruits, whole grains, healthy oils, and healthy proteins like nuts, beans, fish, and chicken should make it into the shopping cart every week, along with a little yogurt or other dairy foods if desired.
Explanation:
~XxRexXx~
~Jack and Jill~
Fear-inducing messages:
a.
often have the opposite of the desired effect.
b.
are generally ineffective.
c.
can increase persuasion.
d.
almost always have the desired effect.
Fear-inducing messages can increase persuasion. A fear request is a persuasive message that tries to provoke fear in order to divert behavior through the threat of upcoming danger or harm.
Are fear inducing messages effective?Fear messages that let the audience know they can achieve the urged behavior or that the behavior will have a positive result are more useful than fear request messages without word of recommended actions.
Thus, option "C" is correct, Fear-inducing messages can increase persuasion.
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Common chaperones are identified as Hsp which stands for heat shock protein. Why do you think these chaperones are identified this way
Common chaperones can be identified as Hsp heat shock protein. These chaperones are identified in this way because they were discovered with heat.
What are chaperone proteins?The chaperone proteins are specific proteins required to fold other functional proteins within the cells.
The application of heat is able to increase the number (concentration) of chaperone proteins in specific cells.
The application of heat increases chaperone levels because it increases the denaturalization (unfolding) of proteins.
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Which two products does the caterpillar produce that allow the cabbage to make molecules used for energy?.
Carbon dioxide and water are the two products of the caterpillar used by the cabbage to make molecules used for energy.
What is photosynthesis?Photosynthesis is the process by which plants produce food from carbon dioxide and water using sunlight as energy source.
Caterpillar is an insect which produces carbon dioxide and water which the cabbage requires for photosynthesis.
Therefore, Carbon dioxide and water are the two products of the caterpillar used by the cabbage to make molecules used for energy.
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DO 7. Choose the best answer.
Answer: The answer is C: Plant more trees
Explanation: Trees absorb excess nutrients from the soil, preventing algae blooms in waterways. This simple act will reduce algae blooms and help the fish.
One important adaptation that separated us from other animals in our evolutionary trajectory is _________.
We can confirm that one important adaptation that separated us from other animals in our evolutionary trajectory can be considered to be Bipedalism.
What is bipedalism?Bipedalism was the adaptation of early human ancestors to abandon movement on all fours and begin to walk up-right. This was a vastly important adaptation as it provided the early humans with freed hands, allowing for many other uses such as tools and social cues.
Therefore, we can confirm that one important adaptation that separated us from other animals in our evolutionary trajectory can be considered to be Bipedalism.
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The pituitary gland is called the ""master gland. "" What other endocrine glands would have been affected by its malfunction?
The pituitary gland is the director gland of the endocrine system along with the hypothalamus its malfunction can affect thyroid gland, adrenal glands among others.
What is pituitary gland?It is one of the areas through which the orders to produce certain hormones are quickly transmitted when certain stimuli are detected in the environment.
Its malfunction can create hormonal deficiencies of the thyroid gland, adrenal glands among others that can affect the various normal functions of the body, such as growth, blood pressure or reproduction.
Therefore, we can conclude that the pituitary gland is the director gland of the endocrine system along with the hypothalamus its malfunction can affect thyroid gland, adrenal glands among others.
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What does the endoplasmic reticulum do in a plant cell?.
Answer:
The endoplasmic reticulum is like a highway or transportation route. it transports everything throughout the cell so it can get where it needs to go. It involves the smooth and rough endoplasmic reticulum.
Explanation:
I hope this helps! It is also in both animal and plant cells.
In the antral phase of follicle development, the follicles are stimulated by LH and _______ to grow tremendously.
Answer:
FSH
Explanation:
In the antral phase of follicle development, the follicles are stimulated by LH and FSH to grow tremendously.
What is atom?
What is mass?
ATOM : - An atom is the basic building block of chemistry.
MASS : - a large body of matter with no definite shape.
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Which of the following aids in the weathering and transportation of rocks?
A.
electricity
B.
sunlight
C.
ice
D.
all of these
Answer:
D
Explanation:
Since thes all could transport them.
How are viral diseases different from
other types of diseases ?
Answer:
Viral diseases require a vector so that they can spread from one person to another whereas other diseases can spread due to seasonal changes and other effects
Explanation:
Each segment of an annelid typically contains bristles of chitin called:.
Each segment of an annelid typically contains bristles of chitin called setae
Why are beneficial nematodes considered beneficial to humans?.
Which of the following is not a consequence of fossil fuel use? a. increased concentrations of atmospheric carbon dioxide b. destruction of wildlife habitats c. leaching of waste into groundwater d. none of the above please select the best answer from the choices provided a b c d
Answer:
d.
none of the above
Explanation:
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identify the organelle where photosynthesis takes place
b
c
d
e
E.
Photosynthesis takes place in Chloroplasts
In plants, the process photosynthesis occurs in chloroplasts which contain the chlorophyll. The chloroplast is seen on the mesophyll of the leaves. So in the given figure, chloroplast is present in the part 'E'. The correct option is E.
What is photosynthesis?The process by which the autotrophs convert light energy into chemical energy which is later used to perform the cellular activities is defined as the photosynthesis. The chemical energy is stored in the form of sugars, which are produced from water and carbon-dioxide.
Photosynthesis generally takes place in the specialized structure called the chloroplasts which consist of chlorophyll. It is the chlorophyll which absorb light energy from the sun. The majority of chloroplasts is present in the leaves which absorbs sunlight for the photosynthesis to occur.
So chloroplast is found in all green plants and algae. They are called the food producers of plants. This cell organelle is not found in animal cells.
Thus the correct option is E.
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What layer of the blood vessel wall is composed of areolar connective tissue containing elastic and collagen fibers
Hey There! Hope you are having a GREAT day!
Your question was.... "What layer of the blood vessel wall is composed of areolar connective tissue containing elastic and collagen fibers"
Your answer is the Tunica intima, Because, The blood vessel's tough outer layer is made up of connective tissue, which permits it to withstand stresses occurring on the vessel wall. It also contains strong collagen fibers that help bind the blood vessel to surrounding tissues, providing stability to the vessel.
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Vertebrates that are warm blooded, have feathers and reproduce by laying eggs would be classified as
A) amphibian B) bird C) fish D) reptile
Answer:
A bird :)
Explanation:
Birds are warm blooded, have feathers, and reproduce by laying eggs :)
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The number of individuals divided by an area is called
species evenness
species richness
population density
clumped distribution
Answer:
The answer is population density.
Explanation:
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What are sense organs?
Sense organs ~
Sense organs are the ones that responds to external stimulus, such as heat, light, chemicals, etc
For example :
Eyes are sense organs that responds to visual stimulus like change in light intensity.
Ears are sense organs that respond to sound stimulus, like Loud music, or change in intensity of sound.
What’s the meaning of biology biological, and biologically means? Or are they all mean the same. If they do not mean the same then explain.
Which structure pumps out excess water and wastes in a paramecium.
Answer:
Contractile vacuole
Explanation:
Contractile vacuole pumps out excess water and wastes in a paramecium.
The structure that pumps out excess water and waste in a paramecium is called the contractile vacuole. The contractile vacuole is a specialized organelle that collects excess water and waste materials from the cell and then contracts and pumps them out of the cell through a pore in the cell membrane.
What is water's role?Paramecium is a single-celled organism that belongs to a group of organisms called protists. Like other cells, a paramecium must maintain a proper balance of water and solutes inside its cell to function properly. However, because paramecia live in freshwater environments that have a lower solute concentration than the cell, water tends to move into the cell by osmosis. If too much water enters the cell, it can cause the cell to burst, so the paramecium has developed specialized structures to help regulate the movement of water.
Hence, the structure that pumps out excess water and waste in a paramecium is called the contractile vacuole. The contractile vacuole is a specialized organelle that collects excess water and waste materials from the cell and then contracts and pumps them out of the cell through a pore in the cell membrane.
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How does most nitrogen get released back into the atmosphere during the nitrogen cycle?
A. Assimilation
B. Ammonification
C. Denitrification
D. Nitrification
Answer:
C
Explanation:
During a process called denitrification, nitrogen in gas forms, like nitrous oxide, are being released. Denitrification occurs if the nitrate is used when bacteria in the soil performs respiration.
The molecular motors of the _______ superfamily are the only ones known to operate in conjunction with actin filaments. With one exception, these molecular motors move toward the _____end of an actin filament.
Answer:
Myosin, plus
Explanation:
The molecular motors of the myosin superfamily are the only ones known to operate in conjunction with actin filaments. With one exception, these molecular motors move toward the plus end of an actin filament.
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Why is important to use the correct bacteria as a host when completing the plaque assay?.
Explanation:
It's important to use hard agar with soft agar overlay because The hard agar underneath the soft agar overlay is where you make a lawn streak of your bacteria.
It's important to use hard agar with soft agar overlay because The hard agar underneath the soft agar overlay is where you make a lawn streak of your bacteria.
What is plaque assay?
A trusted technique for determining viral concentration in relation to infectious dose is the plaque assay. In order to perform the test, a monolayer of virus-infected cells must be counted to determine how many plaque forming units (pfu) were generated.
When a virus-infected cell lyses, plaques form, which trigger a cycle of surrounding cell lysis and infection. Crystal violet staining of the preserved cell monolayer allows for the visualization of plaques.
The plaque assay was initially created as a virological assay to count and measure bacteriophage infectivity. Later, it was used to count viruses that infect mammals as well.
The technique's fundamental premise is to assess a single infectious virus' capacity to develop a "plaque" on a confluent monolayer culture of cells.
Therefore, It's important to use hard agar with soft agar overlay because The hard agar underneath the soft agar overlay is where you make a lawn streak of your bacteria.
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Sort these terminal electron acceptors as participating in either aerobic or anaerobic respiration.
The main electron acceptor in aerobic respiration is oxygen; while some electron acceptors in anaerobic respiration are sulfur and nitrate.
What is the difference between aerobic and anaerobic respiration?Respiration is a biological process that involves the production of energy. This can occurs with oxygen (aerobic) or without it (anaerobic).
What are the electron acceptors in each case?An electron acceptor is a molecule that can accept electrons, which is essential to produce energy.
Anaerobic acceptors: Sulfur, sulfate, nitrate.Aerobic acceptors: Oxygen.Learn more about oxygen in: https://brainly.com/question/2272415