A species is a group of organisms capable of mating and producing offspring, and speciation is the process of forming a new species.
One way a new species may form is by geographic isolation. This occurs when members of a population are physically separated, for example, by a river, or a desert.
After the separation the two populations, responding to different conditions, will adapt differently, and so their evolutionary paths will...
Answer:
thanklkkks for the facts
Answer:
the answer is c
Explanation:
it is diverge
Place the phases of a stem cell into the correct order.
A.differentiation, mitosis, specialization
B.gene expression, differentiation, mitosis
C.mitosis, gene expression, differentiation
D.mitosis, specialization, gene expression
Answer:
C. Mitosis, Gene expression, differentiation
Explanation:
Stem cells are referred to as undifferentiated cells which has the ability to develop into new specialized cells via cellular differentiation. The stem cell initially undergoes MITOTIC division to form new stem cells.
This stem cells then undergo GENE EXPRESSION by turning off some genes and turning on some in order to specialize the cell type. After this, the cell becomes DIFFERENTIATED i.e becomes another type of cell
Place the phases of a stem cell into the correct order.
The correct order would be mitosis, gene expression and then differentiation.
Stem cells can be defined as undifferentiated cells that possesses the ability to develop into many other different cells of the body. Before a stem cell becomes differentiated, the stem cell undergoes growth, mitosis and then information from the gene (DNA) in the cell will be needed to determine the type of cell it will become and be expressed before differentiating and becoming specialized to give rise to a particular type of cell.
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2 The body has to always maintain a constant internal environment. For example, the hormones
aldosterone and antidiuretic hormone (ADH) help regulate the balance of bodily fluids by causing the
kidney to excrete or retain fluids and electrolytes. This constant regulation of hormones and bodily fluids
to maintain balance is an example of which cellular process?
F) Active Transport
G) Negative Feedback
H) Positive Feedback
J) Homeostasis
Answer:
H
Explanation:
I am not 100% sure but that seems like a reasonable answer
Answer: J
Explanation:Homeostasis takes place in order to maintain a balance.
What does the number 84 in krypton-84 represent
A.the sum of protons and electrons.
B.the mass number.
C.the atomic number
D.twice the protons.
Mrs. Cobble has two guinea pigs, one black male and one white female. They 2 white babies
and 5 black babies. Why?
Answer:Guinea pigs get have of their traits from mom and half from dad. Some traits are recessive some are dominant
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Use the periodic table to answer the questions below
11. Sodium is an element found in table salt. What group is Sodium in? * 15
(1 Point)
Enter your answer
Answer:
YOU CAN DO IT I BELIEVE IN YOU I am miss MOTIVATOR
(BRAINLIEST QUESTION) Transcription makes mRNA copies from DNA. For this reason transcription must take place in the ____________ of the cell.
Cytoplasm
Nucleus
Ribosomes
Endoplasmic reticulum
I think it's B
please help asap i will mark brainliest
Answer:
An ionic bond is one formed between two ions with opposing charges. In covalent bonding, molecules are formed by the constituent atoms sharing electrons so they both have full valence (outer) shells, but some electrons occupy the outer shells of both elements at the same time.
The main components of the plasma membrane contain hydrophobic and hydrophilic regions that give the membrane selective permeability. Which of the following is the
main component that creates the hydrophobic and hydrophilic regions? (3 points)
a. Cholesterol molecules creating membrane fluidity
b. Carbohydrates for cell recognition
c. Glycolipids containing hydrophobic lipid portion
d. Phospholipids containing hydrophobic fatty acids tails
Answer:
The main components that creates the hydrophobic and hydrophilic regions of the plasma membrane are phospholipids containing hydrophobic fatty acids tails.
Explanation:
Phospholipids are the main component of the cell membrane —lipid bilayer— and responsible for its selective permeability. Each phospholipid is composed of one glycerol molecule, which forms the head, and two fatty acid tails, plus one phosphate molecule.
In the lipid bilayer, the phospholipid heads are oriented towards the surface, while the tails are located inside, allowing interaction with both polar and apolar molecules.
The hydrophilic regions of the membranes are in contact with the liquids of the extracellular and intracellular spaces, while the hydrophobic region is inside the membrane, limiting the passage of polar molecules or ions.
The other options are not correct because:
a. Cholesterol molecules are part of the membrane, but are not responsible for the hydrophobic and hydrophilic regions.
b. Carbohydrates for cell recognition do not determine membrane permeability.
c. Glycolipids, like integral proteins, are part of the membrane, but do not determine the polarity of the regions.
A change in the sequence of a nucleotide in DNA could result in which of the
following?
A.) The end protein will be a different protein but there will be NO change in its
function.
B.) The end protein will be a different protein that could cause a change in its
function.
C.) The DNA would stop working.
D.)The end protein will be the same protein as before the change.
Answer: A
Explanation:
(A) A mutation is a small-scale change in the nucleotide sequence of a DNA molecule. A point mutation is shown but there are several other types of mutation, ... Replication errors can also lead to insertion and deletion mutations ... on function, but longer extensions might interfere with folding of the protein and so result in ...
Most pneumonia infections are caused by a virus or bacteria. What characteristic could scientist use to distinguish an infection caused by bacteria from an infection caused by a virus? Group of answer choices The bacteria would grow by itself outside the person. The virus would have DNA. The bacteria would make another person sick. The virus would have proteins.
Answer:
The bacteria would grow by itself outside the person
Explanation:
The bacteria would grow by itself outside the person. - this is correct. Bacteria are independent organisms that do not need other cells to replicate. However, viruses require the cell's machinery to divide and cannot survive independently
The virus would have DNA. - Both bacteria and viruses have DNA (or the virus might have RNA)
The bacteria would make another person sick. - Both viruses and bacteria could make another person sick
The virus would have proteins - Both viruses and bacteria have proteins
The cycle that is critical for the formation of organic compounds is the ___cycle.
What are the products of this reaction?
- H2O and O2
- H2O2 and H2O
- O2 only
Answer: Products
Water - H2O
Dihydrogen Monoxide Dihydridooxygen [OH2] HOH Hydrogen Hydroxide Dihydrogen Oxide Oxidane Hydrogen Oxide
Explanation:
ASAP!! sugars can be classified as which biomolecule?
What would a doctor give to a patient to relieve the symptoms of flu?
Answer:most likley tamaflu
Explanation:
What can be used to measure the rate of photosynthesis
Answer:
the answer it at the bottom
Explanation:
Uptake of CO2 by plants: Since CO2 is needed for photosynthesis, measuring how much of it is taken up by the plants gives us information on how much of photosynthesis is happening.
Release of O2: The amount of O2 produced during photosynthesis can be measured.
A chemical bond formed when two atoms share electrons is called a(n) _____ bond
(A)polyatomic
(B)crystal
(C)covalent
✨Thanks✨
3. The change in temperature during summer is due to
*
Answer:
The tilt of the Earth's axis
17. How do we get macromolecules and what do we use them for?
A.food we eat / energy only
B.air we breathe / new cells and energy
C.air we breathe / energy only
D.food we eat / new cells and energy
Answer:
D. food we eat / new cells and energy.
Answer:
b
Explanation:
googled it ;)
How old was Steve Jobs when the pancreatic tumor spread to lung's
Drag the numbers to put the following steps in the correct order.
As electrons move down the ETC, a H+ gradient is made.
The Krebs cycle produces ATP, NADH and CO2.
Ht pass through the ATP synthase to make ATP.
NADH gives electrons to the ETC.
In glycolysis, glucose is split into two pyruvate and makes some ATP.
Answer:
4, 2, 5, 3, 1
4 (As electrons move down the ETC, a H+ gradient is made), 2 (The Krebs cycle produces ATP, NADH and CO2), 5 (H+ pass through the ATP synthase to make ATP), 3 (NADH gives electrons to the ETC), 1 (In glycolysis, glucose is split into two pyruvate and makes some ATP)
In glycolysis, glucose is split into two pyruvate and makes some ATP. (GLYCOLYSIS)The Krebs cycle produces ATP, NADH and CO2. (KREBS CYCLE)NADH gives electrons to the ETC. (ELECTRON TRANSPORT CHAIN)As electrons move down the ETC, a H+ gradient is made. (ETC)H+ passes through the ATP synthase to make ATP. (ATP SYNTHASE)Explanation:
The correct steps are as follows:
NADH gives electrons to the ETC.The Krebs cycle produces ATP, NADH and CO2.In glycolysis, glucose is split into two pyruvate and makes some ATP.Ht pass through the ATP synthase to make ATP.As electrons move down the ETC, a H+ gradient is made.What is glycolysis? Glycolysis is the process in which glucose is broken down to produce energy. It generates two molecules of pyruvate, ATP, NADH and water. The process takes place in the cytoplasm of a cell and does not require oxygen. It occurs in both aerobic and anaerobic organisms.Thus, these are the correct order.
To learn more about glycolysis click here:
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In 1787, a group of representatives from the states wrote the United States Constitution. What is the Constitution?
Answer:
I believe that the answer is D)
Explanation:
The others are incorrect.
When a rapidly moving cold air mass overtakes a slow-moving warm air mass, the result is a(an)
Ans Occluded front
Explanation:
Answer: Occluded front
Need Help Earth Science: Due in 3 minutes
Which of the following is not an example of a fossil:
Question 1 options:
A) petrified wood
B) coprolite
C) amber
D) mud
Answer:
Answer is Mud,
Students planted the same type and number of seeds in pots A and B. The amount and type of soil in both pots were also the same. Each plant received the same amount of water each week. Pot A was placed by a sunny window. Pot B was placed in a closet. After four weeks, the students observed the plants in both pots. The plants in pot A were green with thick stems. The plants in pot B were yellow with thin stems. Which statement best explains why the plants in pot A were different from the plants in pot B?
Answer:
C) Pot A received more sunlight than pot B.
Explanation:
Seeds or plants require some very important factor to grow that include carbon-dioxide, water and sunlight to undergo the process of photosynthesis.
Photosynthesis is the process by which plants make their own food by utilizing carbon-dioxide and water in the presence of sunlight and releases oxygen and energy.
In the given example, both the plants received equal amount of water and soil but the difference is in the position of the plant, in which plant A was placed by a sunny window from where plant have undergoes the photosynthesis process and grew with green with thick stems. while plant B was placed in a closet where no sunlight was present and the plant grew with yellow with thin stems.
Hence, the correct answer is "C) Pot A received more sunlight than pot B. "
Answer:
Answer: C) Pot A received more sunlight than pot B
Explanation:
Here's why: Pot A received more sunlight than pot B is correct. Plants need sunlight in order to make chlorophyll. Chlorophyll is the chemical that makes plants green.
2. Why
are animals phalanges fused
together?
The phalanges /fəˈlændʒiːz/ (singular: phalanx /ˈfælæŋks/) are digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones.
why inter-sectoral cooperation is important in tackling environmental problems?
Answer:
it is important because they have the greatest role in tackling environment
which of the following can cause a decrease in dissolved oxygen in the water ?
a. a small population of fish
b. a large number of plants
c. excessive plant debris
d. lack of animal life
Answer: c
Explanation: As the algae die and decompose, the process consumes dissolved oxygen. This can result in insufficient amounts of dissolved oxygen available for fish and other aquatic life.
What is the main function of glycolysis in cellular respiration?
O A. To make water molecules
B. To make glucose molecules
C. To breakdown water molecules
D. To breakdown glucose molecules
Answer:
The answer is B. To make glucose molecules
!!!! PLEASE ANSWER !!!!! What factors increase the likelihood that all alluvium will be deposited ???
Answer:
Any thing that decreases the stream's velocity such as a bend in the river, a change in gradient or something blocking its path.
Explanation:
Any thing that reduce the stream's speed such as a turn in the river, a change in angle or something prevent its path.
What is soil explain?Soil is the thin layer of material covering the earth's surface and is formed from the weathering of rocks. It is made up mainly of mineral particles, organic materials, air, water and living organisms all of which interact slowly yet constantly.
Thus, reduce the stream's speed such as a bend in the river, a change in angle or something prevent its path.
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