Answers
Answer:
The diagram below shows a cross section of a plant leaf. How does the structure marked X contribute to the survival of the plant? It allows the intake of gases necessary for photosynth
Plants may control the quantity of water and solutes they contain by using guard cells, which use osmotic pressure to open and close stomata. Thus, option A is correct.
What is the major function of guard cell in photosynthesis?Guard cells adjust the efficiency of leaf gas exchange in response to shifting environmental factors, and changes in atmospheric CO2 concentration, light intensity, humidity, and the drought hormone abscisic acid regulate their turgor.
Stomata, which are pores in the plant epidermis, serve as passageways connecting the intercellular gas spaces to the outside world.
Each stomatal hole is surrounded by two guard cells, and variations in the turgor pressure of the guard cells control the pore aperture size.
Therefore, it allows the intake of gases necessary for photosynthesis.
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Related Questions
The Endangered Species Act was passed in 1973, but many people today feel that the Endangered Species Act has not done enough to protect endangered species from human impacts. do you think that it needs to be updated? Give specific examples why or why not.
Answers
Answer:
Absolutely
Explanation:
only 3 percent of species protected by the law have recovered to the point where they are no longer threatened or endangered. The ESA can and should be strengthened so that it not only continues to protect species, but also promotes their full recovery.
In the last 100 years we human beings have eliminated 10 times more species than have disappeared in the past at the natural background rate. Without conservation, we are at risk of losing precious wildlife and depriving future generations of America’s heritage.
With the growing menace of climate change, many more species need our protection. In 1973, there were only 78 species listed in the ESA; now there are almost 1,600.
What happened to the mass of the ice after it melted?
Answers
A gene is a short section of a
Each gene
for a different
Gones work in
There are different versions of
each gene, one is often
over the others.
Answers
Answer:
DNA
Explanation:
A scientist discovers at the end of an experiment that his hypothesis was
wrong. Is there any benefit to the scientist performing this experiment?
A. Yes, the collected data still add to scientific knowledge.
B. No, his work will have to be thrown away, and he will have to start over.
C. Yes, the results of his experiment were probably inaccurate the
first time.
D. No, the scientist will have to throw away the data he collected.
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Answer:
C. Yes, the results of his experiment were probably inaccurate the
first time.
Why is evolution considered a theory
Answers
Fossils of a primitive whale called Basilosaurus have been found in many parts of the southeastern U.S., including the Gulf states of Mississippi, Alabama, and Louisiana. This creature lived in the sea during the Eocene epoch, which lasted from about 55 million to 34 million years ago.
What do these fossils suggest about the areas of land in which they are found?
A.
Humans lived in the areas before Basilosaurus.
B.
The areas were once covered by the sea.
C.
Humans and Basilosaurus lived in the areas together.
D.
The areas were deserts in the past.
Answers
Answer:
B The areas were once covered by the sea! Hope this helps.
The steps of the DNA ladder are made of _____.
phosphoric acid
deoxyribose
nucleotides
paired nitrogen bases
Answers
Answer:
paired nitrogen bases
Explanation:
cytosine and guanine, adenine and thymine
Question 2 of 10
What causes scientists to disagree?
A. Some scientists are better than others.
B. Many scientists do not use the scientific process.
C. Scientists disagree to get attention.
D. They have unique perspectives and skills.
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Answer: I would say A They have unique perspectives and skills.
what would happen if an individual had faulty spindle fibers
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their daughter cells would end up with the wrong number of chromosomes.
Which organ of the male reproductive system is only found on the posterior bladder wall?
Answers
Male reproductive system is mostly located outside to the body. The seminal vesicles are found only on the posterior wall of the bladder wall.
What are seminal vesicles?Seminal vesicles are gland which is present in the male reproductive part and produces the fluid that makes semen.
These are located in the posterior wall of the urinary bladder. It is mainly associated with sperm formation.
Thus, it can be concluded that the male reproductive system is only found on the posterior bladder wall is seminal vesicle.
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the term carbon footprint normally refers to the total amount of carbon dioxide that
Answers
each individual puts out based off their actions.
(ex: driving cars, supporting major corporations, etc.)
Which of the following is NOT correct?
Group of answer choices
tetracyclines bind to ribosomes and inhibit protein synthesis
sulfonamides inhibit folic acid synthesis
bacitracin inhibits ATP synthase and block energy production
quinolones inhibit DNA replication
rifampins (rifamycin) inhibit RNA transcription
Answers
Answer:
sulfonamides inhibit folic acid synthesis
Explanation:
sorry if wrong
Can snow form with a warm and cold front
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Answer:
With a warm front, boundary between warm and cold air is more gradual than that of a cold front, which allows warm air to slowly rise and clouds to spread out into gloomy, overcast stratus clouds. Precipitation ahead of a warm front typically forms into a large shield of steady rain or snow.
The 1988 fires affected the lodgepole pine in Yellowstone National Park. What were the long-term effects?
A. The fires destroyed the seed bank of the pines.
B. The fires opened the cones, allowing for the germination of new trees.
C. The fires opened grassy areas for the pine to germinate.
D. The fires permanently devastated the population of lodgepole pines.
Answers
PLEASE HELP I HAVE THIS DUE TODAY
Answers
Answer:
C. The diversity of Earth's species.
Explanation:
So, pretty much all of the other options in some way impact wind patterns, but honestly, I don't see how biodiversity impacts it.
silt suspended in the water surrounding a coral reef near
the coast of a small island community in the Caribbean Sea
Origin:
Effect on one organism:
Effect on humans:
mercury in the water of a large lake that is popular for fishing
Origin:
Effect on one organism:
Effect on humans:
Answers
Pollution of water bodies due industrial wastes kills aquatic organisms and this disrupts food source for humans.
What are the effect of silt on aquatic organisms?Silt refers to small fine particles of sand or mud that forms a suspension in water.
Silt in oceans usually come from rivers opening into the sea
The silt suspended in the water surrounding a coral reef near the coast of a small island community in the Caribbean Sea will originate from rivers and streams opening into the sea.
The silt will reduce the population of algae on the coral reef as they increase water turbidity.
This will reduce fish population in the area and the food source for humans.
Industrial wastes are a source of mercury in lakes.
The presence of mercury will poison the lake and kill the fishes in the lake.
It will also make the water unfit for drinking by humans.
Therefore, pollution of water bodies kills aquatic organisms and this disrupts food source for humans.
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What does home meant to you?
Answers
Answer:
home is a place if u get u should be thankful because there are people living in streets they have no such places to live
In the animal cell shown, label the structure A-E
Please help!
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Which energy resource is inexpensive, helps with garbage disposal, and reduces the need for landfills, protecting habitat?
O Hydropower
O Natural gas
O Petroleum
O Biomass
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The energy resource is inexpensive, helps with garbage disposal, and reduces the need for landfills, protecting habitat Biomass.
How do renewable energy sources help the environment?Environmental and economic benefits of using renewable energy contains develping energy that has no greenhouse gas emissions from fossil fuels and decrease some types of air pollution.
Diversifying energy supply and reducing dependence on imported fuels.
Thus, Biomass energy is energy generated or produced by living or once-living organisms.
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A scientist, who wants to study the effects of precipitation on rice crops, sets up an experiment with 4 groups of rice crops.
Which statement best describes the relationship between the dependent and independent variables in this study?
Answers
Answer:
a
Explanation:
brainly pls
An independent variable is a variable that is changed or manipulated in a scientific experiment to examine how it affects the dependent variable.
What are the dependent and independent variables?Relies on the variables you're using and the functions connecting them. A variable is dependent or independent, depending on whether its value changes as a result of a change in another variable.
In a scientific experiment, an independent variable is a variable that is altered or controlled to see how it impacts the dependent variable.
The variable being tested and measured in an experiment is referred to as the dependent variable.
Therefore, occurs as a result of the independent variable is referred to as a dependent variable.
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Can someone help with this worksheet?
Answers
Answer:
1. EUGLENA1. Are euglena unicellular or multicellular?= Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyta.
2. What Kingdom do euglena belong to? What Phylum?= Euglena belongs to Kingdom Protista and the Phylum Euglenophyta.
3. What organelle carries out photosynthesis?= Chloroplasts carries out photosynthesis.
4. On which end is the flagellum located?= The flagellum is located on the anterior (front) end, and rotates in such a way as to pull the cell through the water.
5. Define autotrophic.= Autotrophs are known as producers because they are able to make their own food from raw materials and energy.
6. Define heterotrophic.= Heterotrophs are known as consumers because they consume producers or other consumers.
7. Describe the two ways in which the euglena get their nutrients. Euglena can gain nutrients by sunlight absorbing them across their cell membrane.All Euglena have chloroplasts and can make their own food by photosynthesis in which they get nutrients. 8. What is the eyespot used for?= Euglena have an eyespot at the anterior end that detects light, it can be seen near the reservoir. This helps the euglena find bright areas to gather sunlight to make their food.
9. What is the function of the nucleus?= The function of the nucleus is it contains the cell's DNA and controls the cell's activities. The nucleolus can be seen within the nucleus.
10. What is the function of the contractile vacuole? What would happen if the cell did not have this organelle.= The function of the contractile vacuole is that, it helps the cell remove excess water. If the cell did not have this organelle, the euglena could take in some much water due to osmosis that the cell would explode.
________________________________
2. Amoeba1. How does an amoeba move?= the amoeba has an unusual way of creeping along by stretching its cytoplasm into fingerlike extensions called pseudopodia. "pseudopodia" means "false foot".
2. What structure contains the ameba's DNA?= Nucleus contains the amoeba's DNA.
3. How does an ameba reproduce?= In order to reproduce the ameba goes through mitotic division, where the nucleus duplicates its genetic material and the cytoplasm splits into two new daughter cells, each identical to the original parent. This method of reproduction is called binary fission.
4. During unfavorable conditions, an ameba forms a ... ?= During unfavorable conditions, the ameba can create a cyst, this hard walled body can exist for a long period of time until conditions become favorable again.
5. Fingerlike extensions of the ameba's cytoplasm are called ...?= The Fingerlike extensions of the ameba's cytoplasm are called .l Pseudopodia.
6. What disease is caused by the ameba?= A common disease caused by the ameba is called Amebic Dysentery.
7. To what Kingdom does the ameba belong?= The amoeba belongs to the Kingdom Protista.
8. How are protists classified?= Protists are classified into plant-like while others are considered animal-like.
________________________________
3. Paramecia1. What is the funnel like depression on the pellicle called?
=
It’s multiple-choice I just need the answers please
Answers
Answer:
2, 2, 1, 2, 4
Explanation:
Question 1. - Decomposers break apart dead organisms into simpler inorganic materials, making nutrients available to the plants/primary producers.
Question 2. - Energy decreases as it moves up trophic levels because the energy is lost as metabolic heat when the organisms are consumed by other ones from the next level.
Question 3. - Energy moves through an ecosystem in a single direction from the sun to autotrophs/producers, then from producers to heterotrophs/consumers. Never backward from consumers to producers.
Sun ⇒ Producers ⇒ Consumers ⇒ Decomposers
Question 4. - See Question 1.
Question 5. - Autotrophs don't need energy from other organisms. Instead, they use photosynthesis to get their food.
- Note: Fungi cannot make their own food and therefore are not autotrophic. They do not have chloroplasts, instead, they are osmotrophic!
Which of the following is an example of
negative feedback?
A. erosion of soil that results in increased amounts of
erosion
B. exponential population growth leading to more births
and higher population growth rates
5
C. melting of arctic ice leading to higher and higher global
temperatures and more ice melting
D. water moving into the roots of plants and out of leaves
leading to more water moving into the roots
Answers
An example of negative feedback is ; ( D ) water moving into the roots of plants and out of leaves leading to more water moving into the roots.
What is a Negative feedback ?A negative feedback is the reverse effect of the output of a stimulus. Feedback is the effect of the output of a system on the stimulus from the origin. Water moving into the roots of plants and out of leaves leading to more water moving into the roots is a negative feedback.because if the water flows into the roots and out of the leaves is suppose to lead to water moving out of the roots.
Hence we can conclude that An example of negative feedback is water moving into the roots of plants and out of leaves leading to more water moving into the roots.
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Give an example of associative learning.
Answers
Answer:
The best example of this is ‘Pavlov’s dog’; classical conditioning is sometimes referred to as Pavlovian conditioning.
A honey bee's proboscis extension reflex - the bee extends its proboscis as a reflex to antennal stimulation.
Answer:
Examples of associative learning include: If someone puts their hand on a hot stove and hurts themselves, they may learn to associate hot stoves with pain, and have therefore been conditioned not to put their hands on them.
Explanation:
Correct me if im wrong
The mad scientist put a human brain into a robust body. The body is
A
smart.
B
strong.
C
beautiful.
D
admired.
Answers
Answer:
strong
Explanation:
There no way a a robust body could be beautiful,admired or smart
Answer: A
Explanation: I'm sure that the answer is the most obvious one?
3. The principle of uniformitarianism is a key concept that allows geologists to study Earth's past.
A. What is the principle of uniformitarianism? (5 points)
B. How does this principle make it easier for geologists to understand Earth's past? (5 points)
Answers
Answer:
A. What is the principle of uniformitarianism?
Uniformitarianism would therefore be a theory of the Earth characterized by the uniformity of physical laws, processes and the rhythm with which they have acted in nature (gradualism).
B. How does this principle make it easier for geologists to understand Earth's past?
In geology, uniformitarianism has included the gradualist concept that "the present is the key to the past" and that geological events occur at the same rate as they always have, although many modern geologists no longer hold to strict gradualism.
Explanation:
I hope I helped you! :)
(14.02 MC)
Choose all of the statements which describe the difference between the function of the support structures in plants and animals:
The stem transports food from the leaves throughout the plant.
The exoskeleton is a hard covering that protects some animals.
The stem transports water to the leaves of the plant.
I and II
I and III
II and III
I, II, and III
Answers
Expert Verified
The answer is: I and III
Explanation:
The stem transports food and the stem transports water to the leaves of the own plant.
Answer:
Explane:14.02 MC) A and B (or) I and III
Choose all of the statements which describe the difference between the function of the support structures in plants and animals:
A-The stem transports food from the leaves throughout the plant.
B-The exoskeleton is a hard covering that protects some animals.
C-The stem transports water to the leaves of the plant.
Group of answer choices
(A)I and II
(B)I and III
(C)II and III
(D)I, II, and III
describe how a sound travels from the outside environment to your brain
Answers
Answer:
Sound bounces off objects around you an travel close to your body. When sound reaches you the dome shape of your ears let's the sound travel down the ear canal and to your eardrum. When the sound reaches the brain I assume it processes and you assume a sound to what is making the sound. Like fire alarms for example, when we here that specific sound we know to react by evactuating.
Explanation:
I hope this helps, I used my general knowledge to answer.
What enzymes help digest proteins?
Answers
Answer: Amylase (made in the mouth and pancreas; breaks down complex carbohydrates) Lipase (made in the pancreas; breaks down fats) Protease (made in the pancreas; breaks down proteins)
hope this helps !
Explanation:
Reneka is a therapist who recently began dating Bill. One day, Bill expressed dissatisfaction with his current therapist and asks Reneka if she would be his new therapist. To maintain high ethical standards in this situation, Reneka should tell Bill that she cannot be his therapist because it is unethical to have a _____ with a client.
therapeutic alliance
informed consent
multiple relationship
violation of patient confidentiality
Answers
Reneka should tell Bill that she cannot be his therapist because it is unethical to have a multiple relationship with a client.
Ethical standards in health care deliveryEthical standards are those rules guiding health care delivery in the health sector. This ensures that minimum to no ethical problems arise during delivery of health services to patients.
It is unethical to have multiple or dual relationship with your client because it can affect your ability to make the right decisions while delivering care to your patient.
Therefore, Reneka should tell Bill that she cannot be his therapist because it is unethical to have a multiple relationship with a client.
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