Answer:
1 False all cells can be categorised as prokaryotic and eukaryotic, and as multicellular and unicellular ( please note that these are two different categories)
2 False , not all cells have a proper well defined nucleus as prokaryotic cells contain nuclear material instead of a nucleus
3 True
4 True
b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did the elephant population decline over this time period? (Show your work.) How does this compare to the change in range over this same time period?
Answer:
The initial amount, 1.3 million = 1,300,000 is the 100%.
now, 640,000 is a given percentage (lower than 100%) of that.
How we can find it?
suppose that 640,000 represents an x%.
Then we have that the quotient between the actual quantities and the percentages must be the same
(640,000/1,300,000) = x%/100%
x% = (640,000/1,300,000)*100% = 49.23%
Then the percentage declined is:
100% - 49.23% = 50.77%
The other question can not be answered with the given information.
In order to calculate the percentage decline over the period of time between 1979 and 2007, the general formula for percentage change will be applied. This is as follows:
[tex]\frac{B-A}{A} \times 100[/tex]
where:
A = final value
B = initial value
In this problem:
A = Initial population = 1,300,000
B = Final population = 640,000
Applying this formula to the problem, the percentage change in population between 1979 and 2007 is as follows:
[tex]\frac{B-A}{A} \times 100\\\\\frac{640,000 - 1,300,000}{640,000} \times 100 \\\\\frac{-660,000}{1,300,000} \times 100\\\\= \frac{-66,000,000}{1,300,000} \\\\= -50.769 \%\\= 50.77\% \\Note\ that\ the\ minus\ sign\ denotes\ a\ decline.[/tex]
B: The change in range over this period of time is the difference between the final population and the initial populations, which is calcalated thus:
B - A (as explained above)
= 640,000 - 1,300,000 = - 660,000 (the minus sign still shows a decline)
While the percentage shows a "relative change" in terms of percentage, the change in range shows an absolute or actual change.
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What organisms are at the bottom of the food chain?
Answer:
Photosynthetic organisms (plants and/or phytoplankton) are at the bottom of the food chain.
Explanation:
For good science you must prove your hypothesis correct? *
Answer:
Correct, It will help you proove your claim
Explanation:
Correct. You can't just say it's science just because you think it is, you have to prove it.
Which statement accurately describes the Doppler effect?
Answer:
It indicates galaxy motion through light wavelengths. It indicates a galaxy moving toward Earth through red shift.
Explanation:
Answer: It’s A. It was used by Hubble to measure velocities of galaxies.
Explanation: It’s right on edge 2021
There are 12 apples 14 oranges and 16 bananas in a fruit basket.what is the ratio apples to bananas the answer choices are A 1:12 B 1:16 C 6:7 D 3:4 E 2:7
Answer:
The answer is A
Answer:
mannn this aint ittt
Explanation:
dawggg
2. How is the pubic symphysis different in males and females?
Pollen grains are formed in the anther of the flower by which sequence of events?Haploid microspore mother cells divide by mitosis to form four diploid microspores. Each microspore develops into a pollen grain by meiosis. Diploid microspore mother cells divide by meiosis to form four haploid microspores. Each microspore develops into a pollen grain by mitosis. Diploid megaspore mother cells divide by mitosis to form four diploid megaspores. Each megaspore develops into a pollen gram by meiosis. Diploid microspore mother cells divide by mitosis to form four haploid microspores. Each microspore develops into a pollen grain by meiosis. Haploid microspore mother cells divide by meiosis to form four diploid microspores. Each microspore develops into a pollen grain by mitosis.
Answer:
Diploid microspore mother cells divide by meiosis to form four haploid microspores. Each microspore develops into a pollen grain by mitosis.
Explanation:
Pollen grains contain the male gametes of a sexually reproducing plant. Pollen grains are haploid cells in nature produced by the meiotic division of microspore mother cells (located in the anther). The meiosis of these diploid (2n) microspore mother cells give rise to four haploid microspores. This process in plants is called microsporogenesis.
Each haploid microspore (n) develops into pollen grain called microgametophye (bearing male gamete) via mitotic division. During the pollen grain formation, a wall is formed around the microspores.
Given what you know about cellular organelles, what problems do you predict a cell would have if it had a defect in a lysosomal enzyme
Answer:
Cells without lysosomal enzymes will not be able to digest food and these will lead to accumulation of wastes in the cells, leading to cancerous growth and the cells will not be able to live long.
Explanation:
Lysosomes is a membrane bound organelles found in eukaryotic cells that produce lysosomal enzymes which help to breakdown or engulfs biomolecules like proteins, carbohydrates, nucleic acids, lipids it engulfs in the cells to molecules it will easily be absorbed.
Without these enzymes or defect in these enzymes, biomolecules will not be broken down and it's resultant effect is accumulation of wastes which can lead to cells destruction.
If Scientist were studying plant growth of plants both on Earth and in Space, which of the following would not be
a control?
Answer:
The study of the growth of plants in space would not be controlled
Biology may be defined as the ______ of ________ according to your lesson. o.o
1 life
2 study
3 hypothesis
4 fact
5 theory
Which most accurately describes the basis of the scientific method? A.) a path of clearly defined steps that must be followed in a particular order B.) a possible answer to a scientific question based on knowledge or research C.) the recipe for how to conduct an experiment that must be followed precisely D.) the process of hypothesis and testing through which scientific inquiry occurs
The statement 'the process of hypothesis and testing through which scientific inquiry occurs' most accurately describes the basis of the scientific method.
The scientific method is a series of sequential steps used to build scientific knowledge.The steps of the scientific method include:
To make observations about a given phenomenon of the natural world and formulate questions based on these observations.To pose a plausible explanation (i.e., a hypothesis) in order to answer these questions.To test the working hypothesis by experimental and/or observational procedures.To collect data in order to confirm or reject the working hypothesis.Examine results and draw conclusions.In conclusion, the statement 'the process of hypothesis and testing through which scientific inquiry occurs' most accurately describes the basis of the scientific method.
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What is a real-life example of genetic drift?
A real-life example of genetic drift - The Afrikaner (Dutch) population
Genetic driftan unpredictable change in the gene poolit usually limits diversity as some alleles are either eliminated or expressed too much.there are two forms of genetic drift founder effect and bottleneck effectA real-life example of genetic drift is -The Afrikaner (Dutch) population that settled in South Africa had an abnormally high count of Huntington's Diseaseit is due to the first Dutch settlers had a high frequency of the gene than the original populationLearn more:
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The Moon completes one orbit around the Earth in approximately _______ and completes one cycle of its phases in approximately _______.
Answer:
It takes 27 days, 7 hours, and 43 minutes for our Moon to complete one full orbit around Earth. This is called the sidereal month, and is measured by our Moon's position relative to distant “fixed” stars. However, it takes our Moon about 29.5 days to complete one cycle of phases (from new Moon to new Moon).
Explanation:
Why can’t animals be autotroph
Answer:
They can't get energy or food from the sun. They must hunt for their food.
Explanation:
what are the names of the planets in order form closet to the sun to furthest go
Answer: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
I hope i helped!
Explanation:
Answer:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
If you wanted Pluto as well then Pluto will be last
Explanation:
The experimental group is the group that is left
4.
alone during the
experim
ent.
Tru or false
Pls help it’s due today
What happens to the gravitational force between two objects as they move farther apart? A:it increases B:it decreases C:it remains the same D:it fluctuates
Answer:
B. it decreases
Explanation:
This is because the force of gravitational attraction depends on the masses of both objects as well as how far away they are from each other.
Myoglobin transfers oxygen obtained from hemoglobin to mitochondrial proteins involved in the catabolism of metabolic fuels to produce energy for the muscle cell. Using what you have learned in this chapter about myoglobin and hemoglobin, what can you conclude about the structures of these mitochondrial proteins
Answer:
Both are heteroproteins with a globular structure.
Explanation:
Both proteins are very similar, myoglobin is usually relatively small in size compared to hemoglobin.
Both proteins are considered heterogeneous because they are globular, because of their globular shape and the order of union between their amino acids.
The center of these proteins is iron, which is why they are capable of transporting gases such as oxygen, carbon dioxide (CO) and NO.
The structures that make them up are known as heme groups, these heme groups can also be found in meats of animal origin, it is as well as inside the erythrocyte, there is hemoglobin, which contains the heme group with a divalent iron capable of be oxidized to transport this oxygen in the form of oxide, towards the myoglobin that will receive it in the muscular tissue, and consequently oxygenate the muscular tissues as well as other tissues during locomotion or physical action.
What is another word that can be used to describe homeostasis?
stable
complete
correct
equal
Answer:
stable
Explanation:
Another word that can be used to describe homeostasis is - stable
HomeostasisIt is an organism's process of maintaining a stable internal environment suitable for sustaining life. It describes the internal stability of an organism.
Most of the homeostasis process is maintained by the cell membrane by allowing what or what not to enter or exit in the cell, however, the complete cell takes part in the homeostasis.
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Most of the ionic compounds are found in the
Answer:
Ionic compounds are compounds consisting of ions.
Explanation:
Ionic compound can be more complicated the two element one consist of positively and negatively charged ions.
Ionic compound are they electrical neutral the charges are always equal and opposite,ionic compound usually have they multiple nearest part of molecules.Ionic compound containing hydroxide and oxide are they classified as bases and they performed acid base reactions.Ionic compound typically high melting and boiling points hard and brittle,almost electrically insulating.Ionic compound can be produced by the evaporation or freezing, and they metals can directly react the highly negative gases to an ionic product.Ionic compound is can be obtained as the solid compound by the solvent from electrolyte solution.Ionic compound used for the solid state of complex ionic compounds from solid melted together.Ionic compound also be synthesized as the product of a high temperature reaction between solids.Ionic compound held together the forces between the charge distribution of these bodies and the particular ionic compound.A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of
the same type of tomato plants into separate containers, each containing the same amount of soil. Each
pot received a different watering solution containing varying amounts of fertilizer.
The table below shows the average height of the plants by the end of one week.
Plant group
Fertilizer amount (g)
Avg height of plants (cm)
1
O
3.0
2.
5
3.2
3
10
4.4
20
5.0
Which of the plant groups is the control group?
Answer:
plant group 1
Explanation:
Because, it is the only one that has not gotten fertilizer
The plant group that is the control group is plant group 1.
What are fertilizers?Any substance of earthy or man-made origin applied to soil or plant tissues to provide plant nutrients is referred to as fertilizers. It's possible to distinguish fertilizers from spreading agents.
The biology student is studying the effect of fertilizers on plants. Fertilizers increase the growth of the plant, and they also affect the soil of the plant in which they grow.
There are three groups of plants that are used. The growth of the first plant is O and 3.0. The growth of the second plant is 5, 3.2, 3, and 10 and the growth of the third plant is 10, 4.4, 20, and 5.0.
By seeing the Table, we can assume that the growth of plant group 1 is most affected and all other plants have similar.
Thus, the plant group is 1.
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#SPJ2
Which of the following is NOT a function of proteins?
Answer:
the following is not a function of protein is glucose
If water has a density of 1g/cm3, what must be true about the density of ice
Answer:
Water is more dense than ice, so ice will have lower density that make it float
Which statement best compares and contrasts lipids and carbohydrates?
HURRY PLEASEE I HAVE TWO MINUTES JUST THE LETTER AWNSER
The correct answer is B. Both are used for energy storage, but only carbohydrates are used for short-term energy.
Explanation:
Carbohydrates and lipids are both biological macromolecules, which means they are essential for living organisms. Additionally, these are similar because they store energy. However, the type of energy they store is different.
Indeed, carbohydrates store short-term energy, which means carbohydrates are broken down a short time after ingested, and the energy in them is used. On the other hand, in lipids, the energy store is long-term energy, which means it is not consumed as fast as in carbohydrates. This occurs because lipids contain more energy. According to this, the correct statement is "Both are used for energy storage, but only carbohydrates are used for short-term energy".
Answer:
B
Explanation:
Both are used for energy storage, but only carbohydrates are used for short-term energy storage.
Marine crustaceans that are sessile, secrete calcareous plates and filter-feed are:_____.
a. ostracods.
b. barnacles.
c. copepods.
d. decapods.
e. isopods.
Answer:
B. Barnacles
Explanation:
Marine crustaceans that are sessile, secrete calcareous plates and filter-feed are Barnacles. Barnacles are the only sessile crustaceans known in the world.
They are characteristic to marine environments and they are usually found in shallow environments. They are edible due to their relationship with crustaceans such as shrimps etc
Where in the Cell is DNA found?
Mitochondria
Ribosome
Nucleus
Cytoplasm
Answer:
Nucleus
Explanation:
have a nice day !!
Answer:
[tex]\boxed {\tt Nucleus}[/tex]
Explanation:
DNA, or deoxyribonucleic acid, carries genetic information and instructions for making proteins. In a eukaryotic cell, DNA is mostly found in the nucleus, but it is in other organelles, like the mitochondria. Since the majority of the DNA is in the nucleus, the correct answer is C. nucleus.
HELP ASAP! Please help me with these 5 questions, they'd mean a lot! Giving you all my points, please answer.
1. Condensation is the basis by which ______ are formed both in the sky and near the ground as fog.
2. Evaporation occurs when the _______ heats up water in rivers, lakes, or the ocean and turns it into vapor or steam.
3. The Earth water cycle is responsible for all the _______ on the Earth.
4. The water in the atmosphere usually gets into the atmosphere by the way of ______.
Answer:
1. Condensation is the basis by which water droplets are formed both in the sky and near the ground as fog.
2. Evaporation occurs when the sun heats up water in rivers, lakes, or the ocean and turns it into vapor or steam.
3. The Earth water cycle is responsible for all the water on the Earth.
4. The water in the atmosphere usually gets into the atmosphere by the way of transpiration.
Explanation:
I hope this helps you:) I'm sorry if some of them are wrong... I did my absolute best.
Viruses can reproduce many other viruses at once. Bacteria only reproduce one at a time.
O True
O False
Answer:
True
Explanation:
True ,viruses can reproduce many other viruses at once
_______ behavior is inherited and programmed in the genetic code.
When a deer hears a sound in the forest, such as crackling footsteps, it immediately freezes and then bolts through the bushes. This is an example of the _______ response.
Mating rituals or displays can be very complex but are also _______ behaviors.
When animals fight and one wins and one submits, this allows for the establishment of a _______. This means that one animal (the winner) likely gets to reproduce and lead the group.
_______ behavior is used to intimidate other animals in social interactions. Examples include baring teeth or growling.
_______ behaviors rely on prior practice or experience.
When a dog is sleeping and does not react to the sound of a person walking around the house, that is most likely an example of ________.
A common type of learning that involves experimenting to get a reward is called _______.
_______ is the pattern of behavior that follows the day/night cycle.
Many bird species have seasonal behaviors that cause them to _______ or change their location.
Explain how territorial behavior helps an animal population survive.
Answer:
Innate
fight or flight
innate
hierarchy
Aggressive
Learned
habituation
trial and error
Circadian rhythm
migrate
When animals mark their territory they ensure that the mates and food in their area are not overwhelmed. Though territorial animals often fight, it is not to the death, and more to establish social order. This prevents them from over-eating their environment and helps the entire species stay in balance to survive.
Explanation:
PF
Answer:
Innate
fight or flight
innate
hierarchy
Aggressive
Learned
habituation
trial and error
Circadian rhythm
migrate
When animals mark their territory they ensure that the mates and food in their area are not overwhelmed. Though territorial animals often fight, it is not to the death, and more to establish social order. This prevents them from over-eating their environment and helps the entire species stay in balance to survive.
Explanation:
PENN