Answer:
Active transport mechanisms require the use of the cell’s energy, usually in the form of adenosine triphosphate (ATP).
Explanation:
If a substance must move into the cell against its concentration gradient, that is, if the concentration of the substance inside the cell must be greater than its concentration in the extracellular fluid, the cell must use energy to move the substance. Some active transport mechanisms move small-molecular weight material, such as ions, through the membrane.
In addition to moving small ions and molecules through the membrane, cells also need to remove and take in larger molecules and particles.
How does the structure of a lymph node allow immune cells residing within the lymph node to perform their protective function?
Answer:
Each lymph node is well-supplied by both lymphatic vessels and blood vessels, which allow lymphocytes to enter and exit. The nodes are contained within a tough capsule, and surrounded by specialised fatty deposits, both of which may give some physical protection.
Explanation:
What processes can change sedimentary rock into igneous rock?
O A. Lithification and cooling
OC. Heating and cooling
OD. Uplift and erosion
B. High pressure and deposition
Answer:
heating
Explanation:
when it heat it come down
How come the human body does not absorb water completely? In other words; why is it that even though the water could be the best possible in terms of purity, the kidneys still need to filter it? What is there to filter if the water is completely clean and pure? Shouldn't all that water simply be absorbed by all the cells in our organism?
Answer: this is a great question
Explanation:
The bicep muscle has an attachment point at the shoulder and one in the upper forearm. Look at these images of the bones of the arm. Imagine that the point of the arrow is where the force of the biceps muscle is applied to the bone.
4 images of the bones of the arm are shown. In image A, the bicep pulls the forearm upwards. In image B, the forearm pushes the bicep upwards. In image c, the forearm pulls to the right. In image D, the forearm pushes to the left.
Which image would result in the biceps muscle contracting and the forearm being lifted?
A
B
C
D
The contraction of the biceps muscle will make the forearm to be pushed forward hence the correct answer is option A.
What is the biceps muscle?The biceps muscle is a muscle that occurs at the upper arm. It is filled with connective tissue. The biceps muscle can be likened to a lever machine.
The contraction of the biceps muscle will make the forearm to be pushed forward hence the correct answer is option A.
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The term "pan-resistant" bacteria means:
a
Resistant to all antibiotics
b
Does not resist any antibiotics
c
Resistant to some antibiotics
d
Can only be treated by anti-viral drugs.
The correct solution is option a, resistant to all antibiotics.
Pandrug-resistant bacteria are defined by the bacterial strain, which is tolerant to all antimicrobial drugs currently available.Non-susceptibility to all drugs in all antimicrobial categories was termed Pan Drug Resistance(PDR). Resistance strategies are easily adopted by PDR microbes. Pan-drug-resistant Acinetobacter baumannii, pan-drug-resistant Klebsiella pneumonia, and pan-drug-resistant Pseudomonas aeruginosa are only a few examples.Because of their high vitality, colonization rate, and antibiotic resistance, these bacteria are frequently transmitted to patients.To learn more, refer:
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adapt extinct mutation
adaptations fittest natural selection
criticism fossil saber-tooth tiger
Darwin giant sloth survival
evolution glyptodont variation
a. The term describes living things that are best suited to their environment.
b. Species that survive are the ones that make or meet changes.
c. Florida has a rich record.
d. Two examples of land animal fossils found in Florida are the ________ and the ______.
e. Some animals unable to adapt to the changing environment became ___________.
f. Living things _______________ over time to meet their changing environment.
g. This biologist, __________________, studied evolution in the 1800s.
h. The ________________ was a giant, armadillo-like animal with a spiked tail that once lived in Florida.
i. The Origin of Species is a book written in 1859 about ___________________.
j. Nature selects the fittest for ______________________because they have useful traits.
k. Changes may occur in animals due to changes in the sequence of base pairs in their DNA, and this is known as a __________________.
l. Oldfield mice show ____________________ in the color of their fur.
m. The survival of the light-colored oldfield mice on Florida's Gulf Coast is an example of the process called ________________________.
n. Evolution is a controversial theory that has survived much _________________.
That organism will survive in the future which adapt themselves according to the environment.
What is fitness?
Fittest is the term describes living things that are best suited to their environment.
Species that survive are the ones that adapt, make or meet changes.
Florida has a rich fossil record spanning from the Eocene to recent times. Florida fossils are often very well preserved.
Two examples of land animal fossils found in Florida are the giant sloth and the saber-tooth tiger.
Some animals unable to adapt to the changing environment became extinct .
Living things mutate over time to meet their changing environment.
This biologist, Darwin, studied evolution in the 1800s.
The glyptodont was a giant, armadillo-like animal with a spiked tail that once lived in Florida.
The Origin of Species is a book written in 1859 about natural selection.
Nature selects the fittest for survival because they have useful traits.
Changes may occur in animals due to changes in the sequence of base pairs in their DNA, and this is known as a mutation.
Oldfield mice show variation in the color of their fur.
The survival of the light-colored old field mice on Florida's Gulf Coast is an example of the process called adaptation.
Evolution is a controversial theory that has survived much criticism.
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The skeletons of mammalian forelimbs represent variations of a structure that was present in their common ancestor. What has most likely caused the variation in forelimbs?
Question 5 options:
Development of vestigial structures
Trait formation due to behaviors
Changes in the genetic codes
Trait formation due to behaviours, Thus, option "D" is correct.
What has most likely caused the variation in forelimbs?It is obvious to see that the three animals, cat, whale, and bat, have the same basic structure of their forelimbs, but also that they have developed differently and have taken a new shape. The reason for this is a trait formation due to behaviour.
The cat's ancestors were terrestrial, and the cats have remained terrestrial, walking on their four legs, and having the same shape and function as their ancestors.
The whales had similar forelimbs, but their ancestors started to move more and more in water. As they did, they needed more muscle power, but also greater width of the forelimb so that they can move more easily and more efficiently in the water.
This behaviour has gradually resulted in a flat, strong, peddle-like forelimb. The bat too had similar forelimbs to that of the cat, but its ancestors started to try to fly.
The process was gradual, and it started with jumping, then longer jumps, development of skin between the fingers, and elongation of the fingers, thus providing more area for the development of wider skin area. This has resulted in developing a light, wide, skin-dominated forelimb with elongated fingers, providing flight for the bat.
Thus, option "D" is correct.
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Describe how the normal force changes as the mass of the crate increases.
I need help asap
The the normal force increases as the mass of the crate increases.
What is normal force?Normal force is the force which acts downwards as a result of the weight of the body.
The weight of the body is a product of the mass of the body and the acceleration due to gravity.
Based on the graph, the normal force increases approximately 10-fold as the mass of body increases.
Therefore, the normal force increases as the mass of the crate increases.
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9. A molecule that can accept and donate electrons is called
A. an electrochemical gradient
B. a cristae
C. a mitochondrial matrix
D. An electron carrier
Which statement best describes renewable resources?
Answer: I do not know
Explanation:
There are no choices. Please complete your problem.
where carbon dioxide is
produced during respiration?
Answer:
It is produced in the mitochondrial matrix.
Explanation:
The mitochondria are the organelle(s) that take glucose as sugar, use it for energy, and release this into the other parts of the process of respiration.
Which of the following kinds of questions cannot be answered within the
limits of science?
A. Questions about how the natural environment responds to a
specific change
B. Questions about how to prevent a natural event
C. Questions about the value of scientific knowledge
D. Questions about the causes of a natural event
Pls help meee!!!!!!!!!!!!!
Answer: Front, When two different air masses meet, a front is formed. The boundary between these masses is called a stationary front. The air between the two masses never really combines.
lamarcks theory of evolution includes the concept that new organs in a species will appear as a result of
Answer:
continual increases in population size
Explanation:
example
giraffes necks getting longer
quizlet
Would a large hyena population exist?
Answer:
No
Explanation:
The spotted hyena (Crocuta crocuta Erxleben) and the lion (Panthera leo Linnaeus) are two of the most abundant and charismatic large mammalian carnivores in Africa and yet both are experiencing declining populations and significant pressures from environmental change.
Conditions within an ecosystem are constantly changing.
What options do organisms in the ecosystem have to deal with these changes?
Select all correct answers.
Organisms can adapt to the changes.
Organisms may change the ecosystem back to the way it was.
Organisms may die as a result of the changes.
Organisms can move to a new ecosystem.
Answer:
Organisms may die as a result of the changes.
Organisms can move to a new ecosystem.
Organisms can adapt to the changes.
Explanation:
I look the quiz. Have a good day! hope this helps!
The most abundant element in the atmosphere can also be found in?
white sugar and soy protein.
fruits and hydrogenated oils.
carbonated water and glucose.
beans and whey protein.
The most abundant element in the atmosphere is nitrogen and can be found in beans and whey protein. The fourth option is the correct one.
Which is the most abundant element in the atmosphere?The most abundant element in the atmosphere is nitrogen. It makes up about 78% of the air in the atmosphere.
Nitrogen is absent in white sugar (essentially consists of C, H, and O), carbonated water, and hydrogenated oils but is present in beans and whey protein.
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The most abundant element in the atmosphere can also be found in beans and whey protein. Thus, the correct option is D.
Which is the most abundant element in the atmosphere?Nitrogen is the most abundant element in the atmosphere that comprises up to 78% of the air.
Nitrogen is typically not found in fruits and hydrogenated oils, carbonated water and glucose, and white sugar and soy protein.
Therefore, the correct option for this question is D.
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Propose an ecological solution that would protect the tiger species by maintaining the complex interactions within an ecosystem. Provide at least one strength and one limitation to this proposed solution.
Tigers have the ability to coexist with their own predators like brown bears, leopards, etc. In this condition, it is the risk that these predators may threaten the tiger species. Therefore, it is required to construct a special habitat for tigers where they get enough resources without any threat.
What is an Ecosystem?An ecosystem may be defined as a place or area where members of different species live together and interact with one another for the purpose of food, shelter, and space.
The strength of the above solution is that the population of tiger species will be maintained in near future, but the limitation is that here we provide an artificial habitat for the tiger. Now, it depends on them to reside naturally or not.
Therefore, it is well described above.
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When a substance accumulates within a living organism, it is known as ____.
A: Bioaccumulation
B: Venomous
C: Non-persistent
D: Corresive
Answer:
A: Bioaccumulation
Explanation:
It accumulates (builds up) in you, its bioaccumualtion.
draw a diagram of each of the following biogeochemical cycles, also known as nutrient cycles: water, carbon, and nitrogen cycles
The biogeochemical cycles shows the movement of materials in nature .
What is the biogeochemical cycles?The biogeochemical cycles shows the movement of materials in nature such as water, carbon and nitrogen.
These cycles are very important to life on the planet and help to sustain diverse ecosystems. The various cycles are shown in the images attached to this answer.
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Which term best describes this step of the investigative process?
The steps of investigative process include experiment, theory and observation.
What is investigative process?Investigative process is defined as the scientific process that is used to generate a conclusion about a particular finding.
The steps of investigative process include:
experiment, theory andobservation.Therefore, the steps of investigative process include experiment, theory and observation.
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Select all that apply
Chromosomes ___?
A. Are located in the nucleus
B. Occur in numbers that are the same for all organisms
C. Occur in numbers that are the same for all members of a certain species
D. Are organized into karyotypes for scientists to analyze
E. Are rod shaped structures that contain DNA
Answer:
A
Explanation:
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
Answer:
A
Explanation:
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
What do aquatic organisms need to breathe
A: Dissolved nitrogen
B: Dissolved oxygen
C: Dissolved Argon
D: Dissolved Carbon
Answer:
dissolved oxygen
Explanation:
it is because every animal whether on land or water needs oxygen.
[tex]\mathtt \red{B: Dissolved \: oxygen}[/tex]
Oxygen is essential for respiration as it helps in converting food into energy.
Plants in which division can live as long as 1500-2000 years?
Joint Firs are the plants in which division can live as long as 1500 to 2000 years.
10 points! Choose the right answer
Answer:
The right ans is option A ...It helps in the tranfer of minerals from the soil to plant
A fly has two alleles for the color of its eyes. The green allele is recessive, and
is represented by q. The blue allele is dominant, and is represented by p. If 44
of 100 organisms are green, what is p?
Homozygous dominant+ Heterozygous + Homozygous recessive = 1
↓↓↓
p²+ 2pq+q=1
A. 0.66
B. 0.56
C. 0.44
D. 0.34
Answer: D. 0.34
Explanation:
The Hardy-Weinberg Principle is a theory in biology that represents populations of organisms that don't experience any changes in genotypic frequency from generation to generation. These populations must meet the following conditions:
No genetic mutationsCompletely random matingNo gene flowNo selection (natural or artificial)An infinite population sizeIf a population meets these criteria, its genetic and allelic frequencies will remain constant and the population will be in Hardy-Weinberg Equilibrium. However, it is not possible for this to occur in nature, because at least one condition will always be violated in natural populations.
Hardy-Weinberg EquationsThere are two important equations to use when doing problems like this. The first is p + q = 1. It represents the allelic frequency of the population.
p = the frequency of the dominant alleleq = the frequency of the recessive allele
The second equation is p² + 2pq + q² = 1, which shows the predicted frequencies of the three possible genotypes.
44 of our 100 organisms are green, and we know that to be green, they must have a homozygous recessive genotype (gg). That means that the frequency of homozygous recessives (q²) = 44/100 or 0.44. Since we have q², we can just take the square root to find q.
[tex]\sqrt{q^2}[/tex]= [tex]\sqrt{0.44}[/tex]
q = 0.66
Now, we can plug q into our first equation, p + q = 1.
p + 0.663 = 1
p = 0.337, or about 0.34
To make sure these are right, we can plug them into the Hardy-Weinberg equation to check!
p² + 2pq + q² = 1
(0.34)² + 2(0.34)(0.66) + (0.66)² = 1
0.1156 + 0.4488 + 0.4356 = 1
1 = 1
A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of her report?
A.“Question” states what she is asking, and “Hypothesis” states the result of her experiment.
B. “Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.
C. “Question” describes what she is trying to find out, and "Hypothesis" states the procedures and methods of data collection.
D. “Question” describes what she is trying to find out, and “Hypothesis” states any additional information or prior knowledge about the question.
“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format. The correct option is B.
Research questions and hypothesesResearch questions are phenomena being queried upon which a research is set up. The results from the research will answer the questions being asked.
Hypotheses, on the other hand, are tentative guesses made before conducting the experiment associated with the research. They are falsifiable statements of what the answers to the research questions will be. If the results support the statements, they are accepted, otherwise, they are further scrutinized scientifically.
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Jason’s bathroom has two cotton bath mats in it, X and Y. Which bathmat will absorb water more quickly? Explain your answer to part a.
It's an ultra-absorbent bath mat soaks up an impressive amount of excess water quickly and efficiently, to keep your floor clean and slip-free.
Cotton bath mats are some of the most absorbent and comfortable models available. ...
Bamboo mats are durable and stylish.
Teak is a sensible alternative to bamboo.
Microfiber bath mats are reasonably priced and comfortable.
What is the difference between a bath rug and a bath mat?Bath mats are the absorbent, non-skid pads that you throw down in front of your shower or tub. They're specifically made for preventing slips and post-shower puddles. Bath rugs, on the other hand, are fluffier and lend more to the look of a luxurious and guest-friendly bathroom.
Thus, this could be the answer.
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What are the 4 major groups of birds?
Answer:
Strisores — nightjars, frogmouths, and other nocturnal birds, along with diurnal swifts and hummingbirds.
Columbaves — turacos, bustards, cuckoos, pigeons, sandgrouse, and mesites.
Gruiformes — cranes, rails, crakes, Sungrebe, flufftails, and others.
Aequorlitornithes — shorebirds, flamingos, grebes, gulls, tropicbirds, penguins, and other waterbirds.
Explanation:
Answer: The four important group of birds are 1. Game Birds 2. Preying Birds, 3. Perching Birds and 4. Flightless Birds.
Game birds are good runners but they cannot fly long distances. Their wings are short and round, but legs are massive. The beaks are also strongly built. Males are aggressive. One male maintains a group of 3-4 females. Game birds include partridges, pheasants, quail, grouse and pea fowls.
Preying birds are predators. They kill mice and other smaller animals and eat them. They have very strong, hook-like beak. There feet have curved and pointed claw. Their vision is very sharp. Preying birds include vultures, kites eagles and falcons.
Perching birds constitute the largest group of birds. When they sit on a tree, their digit grasp the branch of the tree in such a way that they cannot fall off the branch. Baya, larks, swallow, bulbul, finches, house sparrow, weaver-bird, crow and magpie are some common perching birds.
Flightless birds can run but they cannot fly. Flightless birds are large-sized. They generally lack tail feathers. The keel of sternum is absent. Flightless birds include ostriches, rhea, emu, kiwi, and penguin. Ostrich is the largest living bird. It weighs about 157 kg. Ostriches are very good runners. They are found in Africa and Arabia. Rhea is found in South America. It is smaller than ostrich. Emu is found in Australia. It is smaller than rhea. Kiwi is found in New Zealand. It is Southern hemisphere (Antarctica). Their body is suited for diving and swimming.
--Cited From Preserve Articles
Place the following levels of organization within an organism in order from smallest to largest: organism, organ, molecule, organ system, population, cell, tissue, organelle, and atom