Answers
Answer:
1. Individuals in a species vary in characteristics because of differences in their genes.
Individuals will be born with various characteristics due to their genes for instance some people are short and other are tall.
2. Individuals have to compete when resources (such as food) are limited.
Resources are generally limited so individuals would have to compete t get those resources and survive.
3. Individuals with variations that help them get more of the resources are more likely to survive.
Some of the characteristics that these individuals have which are different will give them an edge and enable them to get more resources and thus survive.
4. Individuals that survive can pass their genetic variations on to their offspring.
The individuals that survive will now have offspring and will pass on their genes to their offspring which give give them the same edge their parents had.
5. Over time, there are more individuals with the variations that are well adapted to the environment.
Eventually there will be more of those offspring that can adapt as opposed to those who couldn't and keep dying out.
Related Questions
Can you list some facts about Food webs.
Answers
Answer:
A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.
Explanation: A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.
Insect 1 : Vespula flavopilosa
Insect 2: Vespula rufa
Insect 3: Callicera rufa
(a) Insects 1 and 2 are more closely related to each other than to insect 3.
(i)Explain how the binomial names indicate that insects 1 and 2 are more closely related.
(i)Explain how the appearance of the three inswcts suggest that insects 1 and 2 are more closely related.
HELPPP I NEED TO KNOW NOWWWW!!
Answers
Note:
In the attached files you will find the image of the three insects
Answer:
(i) Because they share the same genera, Vespula.
(ii) Because Morphologically, insects 1 and 2 are more alike than insect 3.
Explanation:
(i) Explain how the binomial names indicate that insects 1 and 2 are more closely related.
In taxonomy, many categories are used to aggregate organisms according to their evolutive relationship. These are Domain, Kindom, Clase, Order, Family, Genera, Species, Subspecies. All species might be recognized by their common name and their scientific name, which is more reliable. The binomial names of living beings indicate the scientific name by which the organisms can be recognized. A species scientific name is composed of two parts:
- Generic name or genera: correspond to many species that share common characteristics. In the example, Vespula is the genera
- Specific epithet: useful to identify each species in particular and differentiate organisms that are included in the same superior taxes. In the example, flavopilosa and rufa are the epithets that differentiate one species from the other.
According to this, we might assume that species 1 and 2 are more closely related because they share the same genera: Vespula. This suggests that they share more characteristics in common with each other than with Callicera.
(ii) Explain how the appearance of the three insects suggests that insects 1 and 2 are more closely related.
Morphologically, insects 1 and 2 are more alike than insect 3. Traits such as body shape, pigmentation pattern, antenna, wings, total body size, among others, are very similar in species 1 and 2. On contrary, species 3 is smaller, with a thinner antenna, different pigmentation patterns, different wings size and shape.
In the laboratory, yeast cells are usually grown at a temperature of 25oC. A scientist wanted to determine if yeast cells would reproduce faster or slower when the temperature was dropped to 15oC. The same number of yeast cells were placed in the same medium with the same amount of nutrients. One sample was kept at 25oC and the other one was kept at 15oC. The number of yeast cells was counted every hour for an eighteen hour period.
Answers
Answer:
This question is incomplete, however, it is asking to identify the following variables:
Independent variable: Temperature
Dependent variable: Number of yeast cells
Constants: same amount of nutrients, same number of yeast cells, same medium
Explanation:
- Independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable effect. In this experiment, the TEMPERATURE at which the yeast are kept is the independent variable.
- Dependent variable is the variable that responds to the changes made to the independent variable. It is the variable that is measured by the experimenter in the experiment. In this case, The NUMBER OF YEAST CELLS was counted, hence, it is the dependent variable.
- Constants are variables that are kept unchanged or same for all groups by the experimenter in order not to influence the experiment's outcome. In this case, the CONSTANTS are: same amount of nutrients, same number of yeast cells, same medium etc.
Which statements are true of white blood cells? Check all that apply
A. They are called leukocytes
B. They carry carbon dioxide
C. They contain hemoglobin
D. They protect against infection
Answers
Answer:
1,4
Explanation:
Edge
Answer:
They are called leukocytes.
They protect against infection.
Explanation:
pls help i’m taking my exam!!
Scientific laws are____
explanations offered of
specific relationships
not applicable in all situations
non observable phenomenon
descriptions of specific relationships
Answers
Answer:not applicable in all situations.
Explanation:I checked it
What syndrome does this karyotype show?
Answers
Answer:
C
Explanation:
The karyotype shown in the question is characteristic of Down syndrome, also known as Trisomy 21. Therefore option A is correct.
Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21, resulting in a total of 47 chromosomes instead of the typical 46.
The karyotype reveals three copies of chromosome 21, indicated as 47,XY,+21, which is indicative of Down syndrome in a male individual.
People with Down syndrome may experience developmental delays, intellectual disabilities, and characteristic physical features, such as almond-shaped eyes and a flat facial profile.
The presence of an extra chromosome 21 is the defining genetic abnormality in individuals with Down syndrome.
Therefore option A is correct.
Know more about Down syndrome:
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A population of rodents lives in one species of pine tree. They have a commensalistic
relationship with the tree; they use it for protection & housing & the tree is not affected. These
pine trees have very evenly spaced branches of uniform thickness. Rodents that are too small
cannot reach between the branches to move around in the tree. Rodents that are too big and
heavy break through the branches and fall out of the trees. The rodent population that is very
uniform in size have become more populous.
9) Explain how this is related to natural selection. Make sure to include a cause and an effect
within your explanation.
a) How is this related to Natural Selection? (2 points)
b)What has caused the mice population to shift to uniform sized mice? (1 point)
c)What is the effect of this population shift?(1 POINT)
Answers
Answer: I’m not sure but it relates to natural selection because the rodents depend on the tree for survival and the tree is neither harmed or benefited from the rodents the cause and affect is the rodents stay in the tree and the tree is neither harmed or benifited. Pls do not rely on my answer I’m just saying what I think
Explanation:
4 ( 3x+10y=54 and x=y+5 )
Answers
Answer:
x−y=9 , x+y=6
4x+4y=1
, 6x−y=1
x2−y=2
, 2x−y=−1
Explanation:
Five students get sick with a cold after a weekend field trip to the aquarium with their classmates. Which best explains why these students became sick?
A contact with an infected fish
B. contact with an infected person
C. contact with contaminated food
D contact with a contaminated water
Answers
Answer:
The answers is B
Explanation:
I just took a test that had this question on it.
B. contact with an infected person
Transmission occurs when an infected person interacts or exchanges bodily fluids with another person. This can happen before the infected individual even realizes they are sick.
After a weekend field trip to the aquarium with their classmates, five pupils catch a cold. Because they may have come into contact with an infectious person, students became ill. Students became sick as a result of B. contact with an infected person
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Answers
Answer:
You are correct!!
Explanation:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors
define magnification and cisternae?
Answers
Answer:
Magnification In general terms, it can be said that how big or small the image appears with respect to the object is called magnification of the object.
Explanation:
It is represented as the ratio of the height of the image to the ratio of the height of the object. Magnification is denoted as the letter 'm'.
Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a calculated number also called "magnification".
A cisterna refers to a flattened membrane disk that makes up the Golgi apparatus. A typical Golgi has multiple stacks of anywhere from 3 to 7 cisternae stacked upon each other like dinner plates.The cisternae also carry structural proteins important for their maintenance as flattened membranes and their stacking upon each other.
What would happen to a cell if placed in each of the following solutions:
a. Isotonic solution:
b. Hypotonic solution:
c. Hypertonic solution:
Answers
Answer:
Isotonic: there would be no net flow of water, the cell will stay stable
Hypotonic: the cell will fill up with water and burst
Hypertonic: The cell will shrink because it loses water
Explanation:
Question 6 of 10
What are the characteristics of a flash flood? Select the three correct
answers.
O A. Occurs quickly
B. Occurs only during a thunderstorm
O C. Lasts a short time
D. Has a large volume of water
Answers
Answer: A, C, D
Explanation:
Give brainliest please!
Reflex action
(a)
Miriam accidently touches a hot pot and quickly withdraw her hand. Describe
the series of events in the nervous system which causes Miriam to react thi
way
Answers
Answer:
Reflex action/reflex arc/reflex (allow "involuntary") The stimulus (heat) is detected by temperature receptors in the skin. This causes impulses to travel along a sensory neurone to the spinal cord, due to chemical changes across the synapses. Here they go along a relay neurone, and then are sent via a motor neurone to the effector (an arm muscle in this case). The muscle contracts, moving the hand away and preventing further harm.
which of the following best represents a water molecule
Answers
What cell structure controls all life processes for the cell?
1. Cell Membrane
2. Cytoplasm
3. Vacuole
4. Nucleus
Answers
Answer:
4
Explanation:
The nucleus controls all of the cell's activities, such as growth and metabolism, using the DNA's genetic information. Within the nucleus is a smaller structure called the nucleolus, which houses the RNA (ribonucleic acid).
As cells increase in size, what happens to the amount of DNA the cells has?
A) they have more DNA
B) they have the same amount of DNA
C) they get less DNA
Answers
Answer: try B
Explanation:
As a cell's size increases, the amount of DNA stays the same. The information used to build the molecules needed for cell growth is in the DNA. If a cell grows too large, an "information crisis" would occur.
name of these parts of a prokaryote cell pleaseee i’ll give you brainliest and 20 pts.
Answers
Answer:
Explanation:
Ok
I GOVE BRAINLIEST!!!
List three things you learn today about meiosis, two things you found interesting or that you would like to learn more about and one question you still have.
Please just give me random stuff to say
Answers
Answer:
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes . Meiosis also produces genetic variation by way of the process of recombination .
Explanation: Meiosis is important for three main reasons : it allows sexual reproduction of diploid organisms , it enables genetic diversity , and it aids the repair of genetic defects .
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Answer:
Describe the three ways meiosis produces genetic variability. We have seen that meiosis creates variation three ways: crossing over, mutations caused during crossing over, and independent assortment.
8. What phase of mitosis is the cell pictured below in? Explain how you know that.
Answers
Answer:
Anaphase.
Explanation:
We can see that the separated sister chromatids are being pulled by the cell's centrosomes (microtubules) from both poles of the cell.
Which of the following describes Mendel's law of segregation?
During DNA replication, the alleles separate into haploid daughter cells
Alleles of a trait can never be separated from each other.
During meiosis, the two alleles for a trait separate into different gametes
During meiosis, two alleles that were separated come back together
Answers
Which statement best describes a property of water?
A. Liquid water holds its shape
B. Water changes to a gas as it boils
C. Ice becomes a liquid when it freezes
D. Solid ice changes shape with its container
Answers
So imma gonna go with B cuz it sounds like a property
Explain the Importance of water in your body
PLEASE HELP RN ASAP
Answers
Answer:
Your body uses water in all its cells, organs, and tissues to help regulate temperature and maintain other bodily functions. Because your body loses water through breathing, sweating, and digestion, it's important to rehydrate by drinking fluids and eating foods that contain water.
Answer:
Water is needed for your digestive track as it digests foods. As water is also needed for each cell to properly function in your body.
All of the images below were taken using a microscope. Which of these photos shows cells?
Image by Umberto Salvagnin
COMPLETE
Answers
Answer:
It is all of them
Explanation:
just did it on edge!
Answer:
A,B,C
Explanation:
I got it right.
Im not sure if anyone knows this or not.
Can someone please help me with 1 and 2! If u r correct ill mark u was the best answer
Answers
I'm pretty sure the answer to 1 is A, but I know for a fact that soil contains microorganisms and microbes.
The answer to question 2 is D (Porosity)
Cells use a molecule called (DNA / RNA / ATP / CMP) to store and release energy like a battery. The energy is stored in chemical bonds between (nucleotide / oxygen / phosphate / ribose) groups of the molecule, and the energy is released when the chemical bonds are broken.
Answers
Answer:
Cells use a molecule called ATP to store and release energy like a battery. The energy is stored in chemical bonds between phosphate groups of the molecule, and the energy is released when the chemical bonds are broken.
Explanation:
The Adenosine Triphosphate (ATP) is a molecule made of adenine, ribose, and three phosphate groups, which are the ones that store the energy in its bounds. The ATP is the molecule that provides the energy to the different processes that happen in a cell. The molecule is made from the glycogen, fats, and carbohydrates that the body has absorbed in the intestines. When the body needs energy, the ATP loses one or two phosphates, becoming ADP and AMP. When the phosphorylation happens, which is the loss of phosphate, the energy is released.
which molecules are not able to permeate the cell membrane
Answers
Answer:
Small uncharged polar molecules, such as H2O, also can diffuse through membranes, but larger uncharged polar molecules, such as glucose, cannot. Charged molecules, such as ions, are unable to diffuse through a phospholipid bilayer regardless of size; even H+ ions cannot cross a lipid bilayer by free diffusion.
Explanation:
 now that you know the bacteria in each tank drag the tanks to put them in the correct order
Answers
Answer:
1st ammonia nitrifying
2nd nitrite nitrifying
3rd denitrifying
Explanation:
What does a number in front of a molecular formula stand for?
Answers
Answer:
The small number behind each element symbol designates the number of atoms of each element in a chemical formula. If there is no number, it is assumed there is only one of those elements. A large number in front of a compound designates how many units there are of that compound.
10. A mutation in which types of cells would only affect the organism and not future generations?
Answers
Answer:
Somatic mutations are mutations that occur in body cells, that is the cells that do not make gametes. These mutations are not passed on to further generations; for example, if a mutation that changes a gene in a skin cell would not affect your children because skin cells don't produce gametes.
Explanation:
Answer:
Explanation:
Explanation; Somatic mutations are mutations that occur in body cells, that is the cells that do not make gametes. These mutations are not passed on to further generations; for example, if a mutation that changes a gene in a skin cell would not affect your children because skin cells don't produce gametes.