Your answer should be letter b.
"Darwin concluded that if traits in captive pigeons could be selectively passed on to offspring, the selection of traits could also happen in nature."
Which sentence best describes evolution?
Changes in genetic structure of a population occur over time.
Individuals inherit different characteristics.
Populations remain unchanged over time.
An individual grows and changes during its lifetime.
Answer:
changes in genetic structure of a population occur over time.
Explanation:
cuz that's how evolution be working
The option (A) is correct. The best sentence best describes the evolution is changes in genetic structure of a population occur over time.
What is evolution?Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction.
Moreover, evolution is the change in heritable traits of biological populations over successive generations. Evolutionary processes give rise to diversity at every biological organization level. All life on earth shares a common ancestor known as the last universal ancestor.
Therefore, evolution is important because it explains how life developed on Earth and how different species are connected. The evolutionary linkages aid in the addressing of biological challenges, as well as the diversity of life.
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During moderate intensity exercise, most of the ATP used for muscle contraction is formed by?
Answer:
Aerobic cellular respiration
Explanation:
Aerobic cellular respiration is the process by which your cells generate energy (ATP) from glucose (sugar from food) and oxygen. Since this exercise activity is only moderately intense, you are getting plenty of oxygen, and this is how your muscles will generate energy.
Hope this helps!!
Endothermic animals, like humans, are warm blooded and make heat on their own. Ectothermic animals, like reptiles, are cold blooded and must find warmth in their environment. If a lizard must go to warm areas around them to get heat, what type is it ? Endothermic or Ectothermic
Answer:
Lizards are ectothermic.
Explanation:
Lizards are apart of the reptile class and are cold-blooded. Which means their bodies do not generate stable internal temperatures and they have to rely on their surroundings to keep warm.
What is the total of Molecules and what is the element of 3Na2SO4
Answer:
3Na2SO4
Explanation:
can you please mark my answer brainliest
Humans depend on plants to carry out specific functions that are
required to sustain life. Like many multicellular organisms, plants
contain organs that help them to perform those specific functions.
Which of the following correctly pairs a plant organ with its
function?
A.
The roots of plants absorb the water used in the process of
photosynthesis.
B. Plant stems store carbon dioxide that is used in the process of
photosynthesis.
C.
The petals of flowers capture the light energy used during the
process of photosynthesis.
D. The guard cells in leaves absorb the nutrients that are used to
fuel the process of photosynthesis.
Answer:
its A, the roots of plants absorb the water used in the process of photosynthesis
Answer:
The correct anwser is A!
Explanation:
I am currently taking a test with the same question and got it right
I don’t have a question need to see answer
Answer:
4,847 this is the answer because you don't have a question
Explanation:
because 4846 + 1 = that
Cells are differentiated when ___
it only expresses the genes that produce the proteins characteristic for that type of cell.
Which of the following is not a function of the stem A. Supports the leaves B. Helps transport sugar and water C. Pollination D. Germination E. Both C and D
Answer:
I am almost positive it is C pollination
Explanation:
If you were thinking that it might be E, its not because the stem does help with germination.
52. Uncontrolled cell growth harms an organism by
a. destroying DNA.
b. interfering with chemo.
c. damaging healthy tissues.
d. All of the above
Which of the following is NOT a volcanic rock?
obsidian
basalt
feldspar
andesite
rhyolite
Answer:
I believe it is feldspar
Answer:
Volcanic rocks are not feldspar and obsidian.
Explanation:
The three types of volcanic rock are basalt, andesite, and ryolite. Hope this helped :)
Which chemical was the least effective for inhibiting the growth of S epidermis? Of E coil?
Answer:
Phenol
Explanation:
A chemical agent with coefficient of less than 1.0 is less effective
In India, rainwater harvesting is a centuries-old practice that has recently received renewed attention. By intercepting and collecting rainwater where it falls, rainwater harvesting has been extensively used to directly recharge groundwater at rates exceeding natural recharge conditions. As seen in the photograph, rainwater harvesting pools have been built in India, with the capacity to hold 5 million liters of rainwater a day. The costs of this approach are relatively modest, and individual and community programs can locally develop and manage the required infrastructure. Required:
This type of rainwater harvesting in India most closely ensures the continual use of which table?
Answer:
I would guess the water table. There is no visible photograph.
Explanation:
The water table would remain relatively consistent with seasonal changes of rainfall patterns. It can be used to determine rainfall rates over years or even decades.
This type of rainwater harvesting in India most closely ensures the continual use of water table.
What is water table?The line between the saturated and unsaturated zones of the earth's crust is the water table. Groundwater fills any voids between rocks and sediments below the water table.
The water table is an underground line separating the soil's surface from the region where groundwater seeps into rock crevices and voids between sediments. At this limit, the water pressure and atmospheric pressure are equal.
The unsaturated zone is the portion of the soil surface above the water table where water and oxygen coexist in the gaps between the sediments. Because there is oxygen in the soil, the unsaturated zone is also known as the zone of aeration.
Therefore, This type of rainwater harvesting in India most closely ensures the continual use of water table.
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what type of molecule is oil
a.carbohydrate
b.lipid
c.protien
d.enzyme
Answer:
b.lipid
Explanation:
match the following
Answer:
xylem transport water, phloem transport food, Spirogyra forms spore formation and ferns assume fragmentation
Answer:
spirogyra - spore formation
xylem - transport of water
phloem - transport of food
ferns - fragmentation
A China rose plant has 68 chromosomes. State the number of chromosomes
i) in the cells of its sepal
ii) in its germ cells
I) species ranging between 2n=2x=14 and 2n=8x=56
ll) 36,377
A China rose plant has 68 chromosomes the number of chromosomes. Number of chromosomes is the no. of polyploid and disploid group.
i) in the cells of its sepal is calculated by the 2n= 2x=14 and2n= 8x=56.
ii) in its germ cells the number of chromosomes= 36, 377.
What is chromosomes?Chromosomes are thread-like systems positioned within the nucleus of animal and plant cells. Each chromosome is made from protein and a molecule of deoxyribonucleic acid (DNA).
Thus it is clear that the number of chromosomes are welly known.
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1. Muscles move tendons attached to bone by performing an action called _______.
2. Myosin and ______ are two proteins that interact to contract muscles.
3. _______ connect muscles to bones.
4. The layer of skin that grows new cells rapidly is called the _______.
5. The _______ is the layer of skin that regulates body temperature.
6. _______ can occur when pores become clogged with dirt or oil, or become infected.
7. Explain what happens at a microscopic level inside a muscle fiber during contraction, beginning with the nerve impulse.
1. Contraction
2. Actin
3. Tendons
4. Epidermis
5. Dermis
6. Acne
7. A nerve signal from the brain arrives at the intersection of the nerve and muscle cells and releases acetylcholine from the neuron. This triggers chemical changes in the muscle cell involving ions, including Ca2+. Calcium triggers the thick filaments, made of myosin, to attach to the thin filaments, made of actin, in the muscle cell, and the myosin pulls the actin toward the center of the muscle cell. ATP causes the release of the actin fibers, allowing the muscle to relax and the process to begin again.
For Penn Foster.
Answer:
1. Contraction
2. Actin
3. Tendons
4. Epidermis
5. Dermis
6. Acne
7. A nerve signal from the brain arrives at the intersection of the nerve and muscle cells and releases acetylcholine from the neuron. This triggers chemical changes in the muscle cell involving ions, including Ca2+. Calcium triggers the thick filaments, made of myosin, to attach to the thin filaments, made of actin, in the muscle cell, and the myosin pulls the actin toward the center of the muscle cell. ATP causes the release of the actin fibers, allowing the muscle to relax and the process to begin again.
Explanation:
pppp
Why is so important for dentists to check what kind of heart disease the patients have before treatment, and why some patients who have heart disease require to take pre-medication before some dental treatments. If a 10 years old kid who has heart murmur, should he undergo general anesthesia for dental treatment due to he has excessive caries.
Greg is a senior in high school and plays for the varsity football team at his
school. He is one of their star running backs and was injured in the last home
game. He was tackled by three different opponents while trying to score the
winning touchdown. As he was being tackled, the other players on the field said
they heard a loud popping sound. Greg screamed in pain as he fell to the ground
on the bottom of a pile of players. When his coach got to him on the field, he said
Greg was holding his left leg and in a lot of pain. Greg also seemed to be in
shock from the pain because he was breathing really fast and said he was dizzy,
His leg seemed to have a deforined shape. Greg had to be carried off the field
on a stretcher.
1. What are Greg's symptoms?
2. What injury do you think Greg might have based on his symptoms? (Choose
from one of these broken bones: clavicle, ribs, femur, and vertebrae)
3. Where should Greg go to get medical care for his symptoms
4. What things might a medical person check on Greg based on his symptoms?
5. How can Greg prevent problems like this in the future?
In the emergency room, 10ml of blood is withdrawn from the vein and split evenly into two test tubes. The packed cell volume (RBCs) of one test tube is 1.5, and the plasma volume is 3.50 ml. Calculate Maggie's hematocrit in the ER. 15% 29% 24% 30%
Based on the data provided, the hematocrit of a blood sample is 15%.
What is hematocrit?The hematocrit of a blood sample is a ratio of the packed cell volume to total volume of blood.
Hematocrit = packed cell volume / total blood volume × 100%The total volume of the blood sample = 10 mL
Packed cell volume = 1.5 mL
Hematocrit = 1.5/10 × 100%
Hematocrit = 15%
Therefore, the hematocrit of the blood sample is 15%.
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URGENT!! 30 POINTS!!
Most scientists accept the hypothesis that the earliest life forms on earth evolved in an environment quite different from our own. Sort these characteristics based on whether they describe early or modern earth.
-significant amounts of oxygen in the atmosphere
-most of the planet covered in liquid water
-carbon dioxide levels balanced by processes of living organisms
-significant amounts of volatile gases in the atmosphere
-most of the planets water in gaseous form
-large amounts of carbon dioxide in the atmosphere
11. Plants, like trees, require special tissues to maintain their rigidity so they can grow upwards and branch out. Which of the following cell structures is most important in maintaining the rigidity of plants?
* A.
Cell wall
* B.
Cytoplasm
* C.
Chloroplasts
* D.
Cell membrane
Answer:
Cell wall is right option.
Explanation:
In the garden pea, several different genes affect pod characteristics. A gene affecting pod color (green is dominant to yellow) is approximately 7 mu away from a gene affecting pod width (wide is dominant to narrow). Both genes are located on chromosome 5. A third gene, located on chromosome 4, affects pod length (long is dominant to short). A true-breeding wild-type plant (green, wide, long pods) was crossed to a plant with yellow, narrow, short pods. The F1offspring were then testcrossed to plants with yellow, narrow, short pods. If the testcross produced 800 offspring, what are the expected numbers of the eight possible phenotypic combinations
Answer:
Green/Wide/Long, G-W-L- = 186 individuals Yellow/narrow/ long, gg ww L- = 186 individuals Green/wide/ short, G-W-ll = 186 individuals Yellow/narrow/ short, gg ww ll = 186 individuals Green/narrow/ long, G-wwL- = 14 individuals Yellow/wide/ long, gg W-L- = 14 individuals Green/narrow/short, G-wwll = 14 individuals Yellow/wide/ short, ggW- ll = 14 individualsExplanation:
Available data:
• One gene affecting pod color (green is dominant to yellow)
• One gene affecting pod width (wide is dominant to narrow)
• Both genes are located on chromosome 5 and approximately 7 mu away from each other.
• A third gene, located on chromosome 4, affects pod length (long is dominant to short).
• Cross: A true-breeding wild-type plant (green, wide, long pods) was crossed to a plant with yellow, narrow, short pods.
• The F1offspring were then test-crossed to plants with yellow, narrow, short pods.
• The testcross produced 800 offspring.
Cross 1:
Parental) GGWWLL x ggwwll
F1) GgWwLl
Cross 2:
Parental) GgWwLl x ggwwll
F2) N=800
To calculate the numbers of the F2 generation, we first need to calculate the frequencies of recombination and parental of the linked genes. We know that they are 7MU apart from each other. The map unit is the distance between a pair of genes for which every 100 meiotic products one results in a recombinant one.
MU = 7 means that there is 7% of recombination for genes that express color and width. This is:
MU = 7 = 7% recombination
We have two possibilities of recombination: green/narrow and yellow/wide. Each of these recombinants has half of the possibilities of occurring, so:
7 map units = 7 % of recombination in total
= % Gw + % gW
= 3.5 % + 3.5 %
Gw = 3.5% = 0.035
gW = 7%/2 = 0.035
For the parentals, we can calculate
100% - 7% = 93% of parental in total
= % of GW + % gw
= 46.5% + 46.5%
GW = 46.5% = 0.465
Gw = 46.5% = 0.465
The length gene is located in a different chromosome so it assorts independently. This is, of the gametes will be long, L, and the other 50% will be short, l.
L = 50% = 0.5
L = 50% = 0.5
Now we need to figure out how to relate these frequencies. All we need to do is to multiply the frequencies of occurrence obtained previously for linked and independent genes, for each possible phenotype. This is:
Green/Wide, GW = 0.465 Yellow/narrow, gw = 0.465 Green/Narrow, Gw = 0.035 Yellow/Wide, gW = 0.035 Long, L = 0.5 Short, l = 0.5Phenotypic frequencies:
Green/Wide/Long, G-W-L- = GW x L = 0.465 x 0.5 = 0. 2325 Yellow/narrow/ long, gg ww L- = gw x L = 0.465 x 0.5 = 0. 2325 Green/wide/ short, G-W-ll = 0.465 x 0.5 = 0. 2325 Yellow/narrow/ short, gg ww ll = 0.465 x 0.5 = 0. 2325 Green/narrow/ long, G-wwL- = 0.035 x 0.5 = 0.0175 Yellow/wide/ long, gg W-L- = 0.035 x 0.5 = 0.0175 Green/narrow/short, G-wwll = 0.035 x 0.5 = 0.0175 Yellow/wide/ short, ggW- ll= 0.035 x 0.5 = 0.0175Finally, as we need to obtain the numbers of the individuals with those phenotypes, we need to multiply each frequency by N, which is the total number of individuals in the F2 (N = 800).
Green/Wide/Long, G-W-L- = 0. 2325 x 800 = 186 individuals Yellow/narrow/ long, gg ww L- = 0. 2325 x 800 = 186 individuals Green/wide/ short, G-W-ll = 0. 2325 x 800 = 186 individuals Yellow/narrow/ short, gg ww ll = 0. 2325 x 800 = 186 individuals Green/narrow/ long, G-wwL- = 0.0175 x 800 = 14 individuals Yellow/wide/ long, gg W-L- = 0.0175 x 800 = 14 individuals Green/narrow/short, G-wwll = 0.0175 x 800 = 14 individuals Yellow/wide/ short, ggW- ll = 0.0175 x 800 = 14 individuals
determine how a society
feels people should
behave.
Open-ended
question
?
Aden asks people to talk
about their food
preferences
Interview
?
Jenna asks people a
question that has to be
answered in two or more
words
SUBMIT
PREVIOUS
Type here to search
o
63°F Cloudy
Answer:
random sample: maritza
interview: aden
open-ended question: jenna
Question 2 of 10 Which of the following statements is NOT true? A. Mutations are not part of evolution. B. Mutations can be beneficial. C. Mutations can be harmful. D. Mutations are important to evolution. Reset Selection
Answer:
The answer is A
Explanation:
The statement that is not true is option A i.e., mutation are not part of evolution.
What is mutation?A mutation is an alteration in an organism's DNA sequence. Mutations can occur as a result of missteps in DNA replication during cell division, mutagen exposure.
Mutation can be takes as engine that drives evolution as it generates genetic variation.
Thus, the correct option is A.
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Enzymes speed up reaction rates by changing...
activation energy.
hydrogen bonds.
pH.
substrates.
Enzymes usually speed up the reaction by changing activation energy. The correct option is A.
What is activation energy?In chemistry, activation energy is the minimum amount of energy to activate molecules or atoms to the point where they can cause chemical transformation or accessible and usable.
Heating is generally the source of activation energy, with reactant molecules absorbing thermal energy from their surroundings.
The activation energy is determined by the nature of the chemical transformation, not by the relative energy states of the reactants and products.
As the temperature rises, molecules will move and collide more frequently. Additionally, the molecules carry more kinetic energy.
As a result, as temperature rises, so does the proportion of collisions that can overcome the activation energy of the reaction.
Enzymes typically accelerate reactions by changing the activation energy.
Thus, the correct option is A.
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Inventions are great examples of the scientific processes at work. For example, the dialysis machine was a result of which of the following?
creating a successful first version of the machine
waiting for other scientists to contribute experimental data and conclusions
identifying problems and creating solutions
Correct on Edgy identifying problems and creating solutions
The invention of a dialysis machine is an example of identifying problems and creating solutions.
What is an invention?The term invention has to do with the creation of something new that was not existing before and have never existed as a product of a person's ingenuity and imagination.
There are many scientific inventions that have contributed in making the world a better place. The invention of a dialysis machine is an example of identifying problems and creating solutions.
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Answer:
C
identifying problems and creating solutions
Explanation: edge 2022
what is a disadvantage of a male deer having large antlers?
Which are characteristics of bryophytes? (Select all that apply.)
Most of them need water to help reproduce.
Most of them grow tall.
Most of them live in shady, moist, or humid areas.
Most of them are vascular plants.
Answer:
most of them are vascular plants
most of them grow tall
Explanation:
The characteristics of bryophytes are:
Most of them need water to help reproduce.
Most of them live in shady, moist, or humid areas.
What are bryophytes ?Bryophytes are a group of non-vascular plants that include mosses, liverworts, and hornworts. They are small, simple plants that lack true roots, stems, and leaves. As non-vascular plants, they do not have a system of tubes or vessels for transporting water and nutrients, and thus they rely on diffusion and osmosis for these functions.
Due to their lack of vascular tissue, bryophytes cannot grow tall like vascular plants. Instead, they tend to form low, carpet-like mats on the ground or on other surfaces.
Because they require water for reproduction, they are commonly found in moist, shady areas where they can absorb water directly from the environment.
Bryophytes play an important ecological role in their environments, serving as habitat for a variety of small organisms, contributing to nutrient cycling, and helping to prevent soil erosion. Despite their small size and lack of vascular tissue, they are a diverse and widespread group of plants that have adapted to a variety of different habitats around the world.
Another adaptation of bryophytes is their ability to store water in specialized cells called hydroids, which can help to prevent dehydration in dry conditions. Some species of bryophytes also have structures called gemmae, which are small, multicellular reproductive structures that can detach from the parent plant and grow into new individuals under favorable conditions.
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Please Write In Your Own Words.
Describe what will happen when a red blood cell is placed in:
- hypotonic solution
- hypertonic solution
- isotonic solution
In your description you must write about:
- water movement
- what will happen to the cell.
Answer:
Describe what will happen when a red blood cell is placed in:
Hypotonic Solution ⇒ The red cell would burst due to the influx of water. The water would have moved out of the cell which cause it to shrink. Red blood cells don't have the cell wall and contractile vacuoles and as well as it would not be able to maintain their shape leading to their rupture.
Hypertonic solution ⇒ A cell loses its H2O molecules when it is placed in hypertonic solution. Hypertonic solution is the one which contain more concentration of solutes as compared to the concentration of solutes in cytoplasm of cell. Which means that a solution contains less water as compared to the water within the cell.
Isotonic solution ⇒ When a red blood cell is placed in an isotonic solution, there will be no movement of water. Both the concentration of solute and water are equal both intracellularly and extracellularly
[RevyBreeze]
7.
Two of the following statements are false. Circle the letter and fix the statement to make sense
a. Enzymes are NOT used up by a chemical reaction
b. Enzymes help to speed up chemical reactions
C. Enzymes are made up of proteins
d. Enzymes are needed for a chemical reaction to occur