Answer:One of the most important functions of guard cells is to control the closing and opening of the stoma/pores. While the opening of these pores allows water to be released into the environment, it also allows carbon dioxide to enter the cell for photosynthesis (as well as the release of oxygen into the environment).
Explanation:
Answer: guard cells are a pair of cells that surround each of the stoma openings. to open the cells, they have to be triggered by one of many possible environmental or chemical signals. these can include more sunlight or higher than normal levels of carbon dioxide within the cell.
Explanation:
they open to regulate the gas and moisture exchange, hope that this is what you were looking for :)
How does increased sediment loads adversely affect coral reefs?
A- sediment reduces photosynthesis by zooxanthellae
B- nutrients stimulate zooxanthellae growth
C- sediment makes corals Brittle
D- sediment lowers oceanic pH
E- sediment kills parasites
____which are carried on chromosomes, are the organized instructions for producing both RNA and _____that are necessary
for all processes of life.
A) Genes; DNA
B) DNA; proteins
C)Genes; proteins
D)DNA: nucleic acids
Answer:
A
Explanation:
genes are passed down from parent to parent, and when a question asks for "RNA and - ' its almost always DNA
Genes which are carried on chromosomes, are the organized instructions for producing both RNA and DNA that are necessary for all processes of life.
What are nucleic acid?Biopolymers and macromolecules called nucleic acids are necessary for all known forms of life. They are constructed of monomers called nucleotides, which are composed of a nitrogenous base, a phosphate group, and a 5-carbon sugar. Deoxyribonucleic acid and ribonucleic acid are the two primary classes of nucleic acids.
Nucleic acids perform a wide range of tasks, including cell development, the processing and storage of genetic information, the synthesis of proteins, and the production of energy cells.
Therefore, option (A) is correct.
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Which of these is a function of the placenta?
A To deliver the blastocyst after childbirth
B. To carry nutrients to the cells of the uterus
C. To carry wastes away from the embryo
O D. To develop into fetal reproductive tissues
Answer:
c
Explanation:
according to the Nationalinstitute on drug abuse 2013 survey how much is spent annually in workplace because of drugs
Answer:
600
Explanation:
According to the Nationalinstitute on drug abuse 2013 survey, 600 dollars is how much is spent annually in workplace because of drugs.
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what is the difference between a breed and a species?
Answer:
A breed is an artificially selected group of animals. A species is a naturally selected group of organisms.
Explanation:
How/why is ecosystem diversity important?
Answer:
Ecosystem diversity is a type of biodiversity. It is the variation in the ecosystems found in a region or the variation in ecosystems over the whole planet. Biodiversity is important because it clears out our water, changes out climate, and provides us with food.
Explanation:
It clears out water , makes safe climate change and provides everyone with a meal
The changes in composition in an area over time is called
Answer:
Ecological Succession.
Explanation:
The average distance between the center of the Earth and the center of its moon is 3.84 x 108 m. The mass of the earth is
5.97x1024kg. What is the orbital speed and period of Earth's moon?
V, - 1.02 x 10 m/s
V, = 3.26 x 10ʻm/s
T= 2.37 x 10° s = 27.4 days
T = 6.24 x 106 s = 82.2 days
b. V, = 2.03 x 10²m's;
d. V, - 1.02 x 10 m/s;
T = 3.67 x 10ºs = 39.4 days
T = 4.82 x 10Ⓡs = 57.3 days
Answer:
T = 2.37 x 106 s = 27.4 days would be the answer
Explanation:
how bacterial species build antibiotic resistance.
When that bacteria changes in some way that reduces or eliminates the use of the drug.
which pattern of change in living things does the fossil record show?
i think this is helped you )))
A geneticist collected a population of 100 peppered moths. 36 were dark (DD or Dd) and 64 were light (dd). The alleles present in each moth were determined. Out of the 200 alleles for this gene present in this population, the gene pool contained 40 dark D alleles and 160 light d alleles. What are the allele frequencies for the two alleles in this population?
A) D = 0.36; d = 0.64
B) D = 0.50; d = 0.50
C) D = 0.25; d = 0.75
D) D = 0.20; d = 0.80
Answer:
D) D = 0.20; d = 0.80
Explanation:
Ok, so first off, we know that the number of homozygous recessive individuals is 64. So 64/100 is the q^2 value. The q value is the square root of that: it is 0.8. Because p + q has to always equal 1, the p value is then 0.2, and the p^2 value 0.04.
So, we know that the heterozygotes had to be 0.16 of the population (1-0.8-0.04 = 0.16).
d has to equal 0.8 because it is the number of recessive alleles in the population, and they give you this too. D is 0.2.
What does the Particle Theory of Matter state about the relationship of particle energy
In cellular respiration, where do the high-energy electrons that move through the electron transport chain originate?
Answer:
The electrons are carried to the ECT by NADH and FADH+, which are reduced during glycolysis, pyruvate oxidation, and the Krebs cycle.
Genetic drift and natural selection can both be mechanisms of evolution. However, they are very different mechanisms.
Explain how genetic drift is different from natural selection.
Answer:
The key distinction is that in genetic drift allele frequencies change by chance, whereas in natural selection allele frequencies change by differential reproductive success
Explanation:
Hope this helps
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Hairy stems (H) are dominant in tomato plants. Hairless stems (h) are present in tomato plants that are homozygous recessive for this trait. What genotypic ratio would we expect to see in the offspring of two heterozygous hairy stem plants? Answers are in the picture.
Answer:
The answer is A
Explanation:
A person eats a candy bar, and the sugar level in her blood gets very high. Her body releases insulin into her blood. The insulin causes extra sugar to be stored in the muscles, and the sugar level in the blood returns to normal.
Explore: Use the Gizmo to create three more carbon paths, each starting and ending in the atmosphere. Label each location with A for atmosphere, B for biosphere, G for geosphere, or H for hydrosphere. (You can also use P for the anthroposphere if you like, or just include it in the biosphere.)
Carbon-dioxide gas is essential for maintaining life on earth.
Carbon-dioxide present in the atmosphere comes from breathing of animals and volcanic eruption. this carbon-dioxide absorb by the plants (biosphere) in the process of photosynthesis. This carbon-dioxide is incorporated in the soil (geosphere) with the dead bodies of plants and animals and decomposition of these bodies occurs and carbon-dioxide gas again releases in the atmosphere. Carbon-dioxide gas is also dissolved in the water bodies where it is required by the plants for photosynthesis and made food for the marine animals.
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During photosynthesis,light energy is converted to chemical energy
Answer:
True
Explanation:
Because during photosynthesis carbon dioxide is formed which is a chemical
Answer:
True
Explanation:
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
which of the following definitions is the correct description of symbiosis
Answer:
A symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.
symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.
What characteristic makes a social group eusocial?
Answer:
Eusociality (from Greek εὖ eu "good" and social), the highest level of organization of sociality, is defined by the following characteristics: cooperative brood care (including care of offspring from other individuals), overlapping generations within a colony of adults, and a division of labor into reproductive and non.
Explanation:
Answer: Eusociality (from Greek εὖ eu "nice" good and social), the highest level of organization of sociality, is defined by the following characteristics: cooperative brood care (including care of offspring from other individuals), overlapping generations within a colony of adults, and a division of labor into reproductive and non.
Which paragraph in the section "Speciation" BEST supports the idea that animals can adapt in ways that allow multiple species to survive together in a common area?
Question 2 options:
A) Sometimes, an organism develops an adaptation or set of adaptations that create an entirely new species. This process is known as speciation.
B) The wide variety of marsupials in Oceania is an example of how organisms adapt to an isolated habitat. Marsupials, mammals that carry their young in pouches, arrived in Oceania before the land split with Asia. Placental mammals, animals that carry their young in the mother's womb, came to dominate every other continent, but not Oceania.
C) Koalas, for instance, adapted to feed on eucalyptus trees, which are native to Australia. The extinct Tasmanian tiger was a carnivorous marsupial and adapted to the niche filled by big cats like tigers on other continents. Marsupials in Oceania are an example of adaptive radiation, a type of speciation in which species develop to fill a variety of empty ecological niches.
D) The cichlid fish found in many of Africa's lakes exhibit another type of speciation, sympatric speciation. Sympatric speciation is the opposite of physical isolation. It happens when species share the same habitat. Adaptations have allowed hundreds of varieties of cichlids to live in Lake Malawi. Each species of cichlid has a unique, specialized diet: One type of cichlid may eat only insects, another may eat only algae, another may feed only on other fish.
Answer:
I will say C
Explanation:
Sorry if I am wrong.
Paragraph in the section "Speciation," BEST supports the idea that the Koalas, for instance, are adapted to feed on eucalyptus trees, which are native to Australia, and that this is present in the option C.
What is the significance of the koalas?They have various importance, such as being culturally significant in Australia, bringing economic benefits to the area, being important for scientific research and understanding marsupials, and so on. They are considered a vulnerable species due to habitat destruction, but they play an important role in the ecosystem as they are herbivores and help control the growth of eucalyptus trees.
As a result, paragraph in the section "Speciation," BEST supports the idea that the Koalas, for instance, are adapted to feed on eucalyptus trees, which are native to Australia, and that this is present in the option C.
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Contaminated water called leachate from _____ can pollute groundwater.
Group of answer choices
A.solid waste incinerators
B.bioplastics
C.compost bins
D.sanitary landfills
E.recycling centers
Answer:
option D
Explanation:
Infusion is formed by the leaching of water in waste in a landfill along with the transfer of certain contaminates. Contaminated water called infusion from sanitary landfills can pollute groundwater.
What is sanitary landfill?Sanitary landfill is a landfill where waste is decomposed into biologically and chemically inert materials in a setting which is isolated from the environment.
There are the following types of landfills:
Municipal solid waste landfills.Industrial waste landfills.Hazardous landfills.Contaminated water called infusion from sanitary landfills can pollute groundwater.
Thus, the correct option is D.
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A cell phone discarded in the United States can cause a person processing it in China, India, or Africa to suffer negative consequences if it is not handled properly.
True Or False
Answer:
true
Explanation:
it is true
1. One of the central themes in biology is how DNA, RNA, and proteins are related. Describe how genetic
information is passed among those types of molecules. Include the results of the processes of
transcription and translation
Answer:
Transcription uses a strand of DNA as a template to build a molecule called RNA. The RNA molecule is the link between DNA and the production of proteins. During translation, the RNA molecule created in the transcription process delivers information from the DNA to the protein building machines.
Explanation:
How do you know where the Big Dipper starts
Answer:
NORTH STAR AND THE LITTLE DIPPER
Finding the Big Dipper in the night sky is the easiest way to find Polaris, the North Star, located in the constellation Ursa Minor, the Little Bear. The Big Dipper rotates around the north celestial pole, and always points the way to the North Star
Explanation:
Answer: If you live at temperate latitudes in the Northern Hemisphere, simply look northward and chances are that you'll see the Big Dipper in your nighttime sky. It looks just like its namesake. Once you've found the Big Dipper, it's only a hop, skip and jump to Polaris and the Little Dipper.
which statement is true of prokaryotes but not eukaryotes
A. Some are multicellular
B. They have no ribosomes
C. They have no water
D. All are unicellular
Answer:
c sorry if u get it wrong
Which statement describes a difference between a jellyfish and a frog?
O A jellyfish lacks vertebrae, whereas a frog has a spinal cord.
O A jellyfish cannot reproduce sexually, but a frog can.
O A jellyfish makes its own food, whereas a frog is a heterotroph.
O Ajellyfish is a prokaryote, whereas a frog is a eukaryote.
Answer:
The answer is the first choice
Explanation:
Jellyfishes dont have a skeletal structure (vertebrae included). They are mostly made up of water. Frogs on the other hand do have bones and have a spinal cord which helps it move.
Answer:
A
Explanation:
edge 2020
The human body contains many glands, including the pituitary, thymus, and thyroid. The table below shows the functions of two of these glands. Function 1. Associated with the immune system and is largest in size during teenage years 2. Produces hormones which are required for growth and various body functions Which of the following matches correctly the names of the glands with their functions? Group of answer choices Pituitary—Function 1; Thyroid—Function 2 Thyroid—Function 1; Thymus—Function 2 Thymus—Function 1; Pituitary—Function 2 Pituitary—Function 1; Thymus—Function 2
Answer:
The answer is B
Explanation:
I had did research on both explanations and Thymus is 1st and Pituitary is 2nd. I had looked this question up and yours is a bit different then mine, but I thought I'd stop and help you. :)
Answer:
B
Explanation:
im doing the test now
How is a food web a more accurate representation of the feeding patterns that occur in nature than a food chain?
Answer: Food webs give the bigger picture.
Explanation:
A food chain is a series of steps in which organisms transfer energy by eating and being eaten.
A food web is a network of feeding interactions.
A food web will show you all the interactions and relationships between animals and gives the feeding scenario.
Angelman Syndrome or Prader Willi will be present in a child when:
a) there is a deletion on the X chromosome.
b) there is a mutation involving the X chromosome.
c)methylation has occurred involving one parent's chromosome.
d)methylation has occurred involving both parents' matching chromosomes.
Answer:c
Explanation:
