The features of ginkgophytes are:-
b. they produce sperm with flagella.
d. they are dioecious.
e. they produce seeds.
Ginkgophytes are the plants which belong to the division Ginkgophyta of Gymnosperms. These plants produce sperm which are flagellated. Ginkgophytes are dioecious, i.e. pollen-forming male reproductive structures and the female reproductive structures (ovules) are present on separate plants and not on the same plant.
Ginkgophytes produce seeds since they are Gymnosperms. However, these plants do not produce fruits. The entire reproductive cycle of the plant is completed in a period of about 14 months e.g. Ginkgo. Development of gametophytic phase takes place in the first year whereas, embryo development is completed by the time of spring in the next year.
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why a scientist might want to study the DNA of strawberries
Each of your cells, whether you're a rat, tomato, bacterium, or human, will contain DNA (with some rare exceptions, such as mature red blood cells in humans). The genome is a set of instructions that is present in every cell in its entirety. Numerous factors lead scientists to examine DNA: They can determine how the instructions contained in DNA support the healthy operation of your body. DNA may be used to create novel medications, and crops can be genetically modified to resist insects.
They can identify criminal suspects, and they can even reconstruct evolutionary histories using ancient DNA!
Scientists often use one of the various DNA extraction kits offered by biotechnology companies to extract the DNA from a cell.
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Which model best represents the results the student would expect to see if the dialysis bag filled with a 5% starch solution is placed in distilled water for one hour?.
Answer: The bag filled with the distilled water will decrease in mass as will the dialysis bag with 0.2M of sucrose. The decrease in mass is due to the concentration of the solutes being higher in the solution outside of the dialysis bag, which will cause water to flow out.
Explanation:
Semipermeable cell membranes are made of phospholipids that form a bilayer. What major benefit does this arrangement of the membrane provide to the cell?.
Answer: Phospholipid bilayers are critical components of cell membranes. The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell. However, an important function of the cell membrane is to allow selective passage of certain substances into and out of cells.
Explanation:
Archaeologists sometimes study living peoples as a source of inference for understanding past human behavior, what is the name of this method?
Sometimes archaeologists observe current populations to draw conclusions about previous human behavior Ethnoarchaeology.
Who are referred to as archaeologists?An archaeologist is a scientist who excavates artifacts and human remains to learn about human history. Nearly 3.2 million years old, Lucy is the oldest known human and was discovered in Ethiopia by archaeologists.
What qualifications do archaeologists need?A master's or PhD in archeology is necessary to become an archeologist. While pursuing a PhD, they would typically labor in the field for 12 to 30 months, and many master's degrees may also call for fieldwork hours. Employers typically want experience in some kind of archaeological fieldwork.
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How did Van Leeuwenhoek
improve the microscope?
Answer: “Leeuwenhoek's skill at grinding lenses, together with his naturally acute eyesight and great care in adjusting the lighting where he worked, enabled him to build microscopes that magnified over 200 times, with clearer and brighter images than any of his colleagues could achieve.”
Born: October 24, 1632, DelftProfessions: scientist,
inventorAntony van Leeuwenhoek (1632-1723)https://ucmp.berkeley.edu › history › Leeuwenhoek”
Explanation:
A natural resource management team was using the adaptive management approach. due to climatic changes in their project site, the implemented methods failed. they therefore start redesigning their plan. which stage of the adaptive management involves redesigning the plan?
The stage of the adaptive management which involves redesigning the plan is to adjustive stage.
An organized method of decision-making called adaptive management places a focus on transparency and responsibility. When there is a great deal of ambiguity about the best technique for managing natural resources, adaptive management is helpful.
For instance, adaptive management is used in conservation efforts to better species, national seas policy (including the administration of national marine sanctuaries), and to restore sizable aquatic ecosystems in freshwater areas. In all these ways adjustment can be done according to the environment.
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science is a way to understand our surroundings by ____ and _____ what we see. then we come up with _____ for these questions and ____ them to see if they are plausible.
Answer:
Science as a way of knowing refers to the belief that the actions of science are based on logic, evidence and reasoning. Although there are other ways of knowing that may be important in our personal and cultural lives, they rely on opinion, belief and other factors rather than on evidence and testing.
Explanation:
Science as a way of knowing refers to the belief that the actions of science are based on logic, evidence and reasoning. Although there are other ways of knowing that may be important in our personal and cultural lives, they rely on opinion, belief and other factors rather than on evidence and testing.
Weak attractions or interactions between molecules. are termed a(n):
O ionic bond
van der Waals interactions
nonpolar covalent bond
O polar covalent bond
Why am I gay? please help!!
Answer:
Explanation:
You are a girl or boy and let us say you like a boy and you are a but it's okay .
Answer: yeah
Explanation: embrace it, I did
Since the 1950s, water temperatures along the cost of Tasmania have increased, allowing the sea urchin C. rodgersii to expand its range. Predict: What is most likely happening to sea kelp beds along Tasmania and why?
Because of the misalignment of marine ecosystems, sea urchin populations have increased.
Briefing :Large areas of ocean are becoming bare due to the destruction of kelp forests. These kelp forests are a vital component of a carbon sink that aids in the fight against global warming.
How is the survival of sea urchins affected by temperature?One of the main environmental factors that influence sea urchin gonad production and gonad quality is temperature. Below 20 °C is the ideal temperature for S. intermedius in the Sea of Japan. Test diameter (TD) can decrease, there can be morbidity and even death when the water temperature is higher than 25 °C.
Coral reef ecosystems, which are home to a bewildering array of marine biodiversity and serve as essential sources of human food, are negatively impacted by coral bleaching, which is brought on by warmer waters.
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in what ways are wet mount slide preparations disadvantageous when viewing live specimens? choose one or more:a.little contrast with external mediumb.boils specimenc.harder to observe live behaviord.more artifactse.bacteria appear "hollow"
Bacteria appear "hollow" C.boils specimen E.little contrast with external medium .
What is Bacteria?Bacteria are omnipresent, largely free-living creatures that frequently only have one biological cell. They make up a significant portion of the prokaryotic microbial kingdom. Bacteria, which are typically a few micrometers long and were among the first life forms to appear on Earth, are found in the majority of its habitats. Soil, water, acidic hot springs, radioactive waste, and the deep biosphere of the Earth's crust are all home to bacteria.
Through the recycling of nutrients, such as the fixation of nitrogen from the atmosphere, bacteria are essential at many phases of the nutrition cycle. The decomposition of dead corpses is a part of the nutrient cycle; bacteria are in charge of the putrefaction phase of this process. By converting dissolved chemicals, extremophile bacteria supply the nutrition necessary to support life in the biological communities surrounding hydrothermal vents and cold seeps.
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Osteclats have more ... than other body cells because it does more breaking down/recycling than other tissues
Answer:
Resorbing action or breaking or proteolytic
taxonomy is the science of describing, naming, and classifying organisms. is the study of biological diversity and the evolutionary relationships among organisms.
Taxonomy is the science of describing, naming, and classifying organisms. Systematics is the study of biological diversity and the evolutionary relationships among organisms.
Taxonomy- Based on their shared traits and lineage, organisms are categorized using taxonomy. Identification, characterization, classification, and naming of all living things in accordance with their traits are the primary goals of taxonomy.
Systematics- In biology, systematization refers to the naming and categorization of organisms. It is a field of biology that investigates how different species connect to one another over time and their distinguishing traits. As a result, it serves as the foundation for understanding how life evolved.
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Cells responding to the boundary of a surface are subject to less lateral inhibition than cells responding to the center of the same surface. this leads to an effect called:_________
Less lateral inhibition affects cells that respond to a surface's edge than it does to cells that respond to the surface's center. This results in a phenomenon known as edge enhancement.
What are cells?Cells are the basic building blocks of all living things.. There are many billions of cells in a human body. They provide the body with structure, take in food's nutrients, convert carry out specific actions by converting them into energy.
What are 5 functions of cells?The Purposes of a Cell:
Support and Structure. You are aware that bricks make up a house.Growth. Simple cell multiplication is how tissues form in complex organisms like humans.Transport.Production of energy.Metabolic processTo know more about cells visit:
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What is the primary function of Glucose?
Answer:
A primary role for the glucose molecule is to act as a source of energy; a fuel.
Explanation:
Plants and animals use glucose as a soluble, easily distributed form of chemical energy which can be 'burnt' in the cytoplasm and mitochondria to release carbon dioxide, water and energy.
Answer:
It is a source of energy.
Explanation:
Plants and animals use glucose as a source of fuel and is a source of energy in a cell function. It also generates energy that the Human cells use to carry metabolic and biological function.
when a skeletal muscle is fully contracting for a period of time, such as in arm wrestling or lifting a heavy weight, the force of contraction will eventually
Answer:
dogs. dogssssssßsssssssss
Explanation:
dogssss
Force of contraction decreases, when the skeletal muscle is fully contracting for a long duration because it creates a lag in muscle cycle duration.
What is skeletal muscle contraction?The neuromuscular junction, which is the synapse between a motoneuron and muscle fiber, is just where skeletal muscle contraction begins.
The propagation of nerve impulses to the motoneuron and subsequent depolarization leads the presynaptic membrane's voltage-gated calcium channels to open.
Calcium ions bind to the protein complex troponin, exposing the active-binding sites on actin, and triggering the muscular contraction cycle. Whenever the actin-binding sites are revealed, the high-energy myosin head crosses that gap, resulting in the creation of a cross-bridge.
Therefore force of contraction will decrease in skeletal muscle when contracting for a long duration.
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PKU is a condition that occurs as a result of faulty enzyme. People with this condition
can no longer break down the amino acid phenalyine. When phenalyine builds up brain damage is caused explain how a mutation could cause this condition
PKU is a condition that is brought on by a bad enzyme. The amino acid phenalyine can no longer be broken down in people with this disease.
Describe the harm that occurs to the brain when phenalyine accumulates and how a mutation may create this illness. What triggers PKU?The phenylalanine hydroxylase (PAH) gene is altered in PKU. The enzyme required to degrade phenylalanine is produced in part because to this gene. The hereditary condition phenylketonuria (also known as PKU) causes the blood to contain more of the amino acid phenylalanine. The amino acid phenylalanine is a component of proteins that is derived from food. All proteins and certain artificial sweeteners include it.
Phenylalanine hydroxylase is a missing enzyme in newborns with PKU. It is necessary for the amino acid phenylalanine to be broken down. Foods that contain protein include phenylalanine. Phenylalanine levels increase in the body without the enzyme.
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Please help me i am stuggaling so badly acellus what is the energy of an orange lamp with a frequency of 5.10 x 10^14 hz ? x 10^? <----- answer like than please
5.88235.10-7 is the energy of an orange lamp with a frequency of 5.10 x 10^14 hz.
What is frequency ?The number of times a repeated event occurs in a given amount of time is known as its frequency. It is also sometimes called "temporal frequency" to stress the contrast to "spatial frequency" and "ordinary frequency" to underline the contrast to "angular frequency." Hertz (Hz), which is equal to one (event) per second, are the units used to express frequency.
The reciprocal of frequency, the period is the length of time occupied by one cycle in a repeating event. The period, T—the space between beats—of a heart beating at a frequency of 120 beats per minute (2 hertz), for instance, is half a second (60 seconds divided by 120 beats). Science and engineering employ frequency as a key characteristic to define the temporal scale.
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which students gave an accurate statement regarding cellular transport
The student that gave the best explanation about cellular transport would be student 1,2 and 4.
What is cellular transport?This is the term that is used to refer to the transportation of cell materials along the cell membranes of a living thing. The ways that the cell transport are known to happen would be either in the active transportation or the passive transportation. The passive transportation of the materials is one that does not need the many energy requirements but the one that is the active transportation is one that has to do with the energy for it to happen.
Hence we can say that the student that would have the best explanation based on the question that we have here and the graph would be the student that gave the solution as 1, 2 and 4.
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Complete question
Students are discussing what they know about cellular transport. Their explanations are displayed in the table. Which student(s) gave an accurate statement regarding cellular transport? * EXPLANATION Passive transport is the movement of molecules from high to low concentration. 2 The sodium-potassium pump is an example of active transport because it uses energy 3 Molecules move against the concentration gradient in passive transport. 4 Diffusion and osmosis are both examples of passive transport. O Student 1 only O Students 1 and 2 Students 1, 2, and 4 O Students 2, 3, and 4
identify this species
Answer:
That is a spider
Explanation:
I can tell its a spider from observation because it has 8 legs, also because it looks very alike to the spiders I see around nature.
what breaks down organic compounds in the ATP forming reaction of aerobic respiration?
Answer:
Cellular Respiration
Explanation:
Cellular respiration forming the reaction
A doctor's office schedules patient appointments according to the urgency of medical need. Which time management
skill is the office demonstrating?
prioritizing
accounting
tracking completion
setting deadlines
A doctor's office schedules patient appointments according to the urgency of medical need. Prioritizing is the time management skill that the office is demonstrating.
What does the first phase of professional preparation entail?Set a priority list for the things you must perform to reach your objective. Make a to-do list to help you achieve your short-term objectives.
What are the six methods of time management?1. Planning, checklists, and to-do lists.
2. Determining priorities and assessing important tasks.
3. Set objectives.
4. Enhancing and evaluating processes.
5. Modification filtering.
6.Making deadlines on purpose.
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Answer:prioritizing
Explanation: I TOOK THE TEST
The body performs many processes that depend upon energy and could not occur without a supply of atp. How does the energy from atp power the cellular reactions?.
The body performs many processes that depend upon energy and could not occur without a supply of ATP. ATP powers cellular reactions by y transferring a phosphate group to another molecule in a process known as phosphorylation.
ATP also known as adenosine triphosphate is a molecule that is found in the cells of living organisms. ATP releases energy to start the different cellular processes. It itself stores energy from the breakdown of food.
It does not exactly store the energy but acts as a way of transport to deliver energy where it is required within the cell. It also provides energy to those reactions which release energy but need a little to proceed.
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If you refuse to the state administered chemical test of your blood, breath, urine or other bodily substances, how long could your license be suspended for?.
Answer:
It depends on what state you are driving in.
Explanation:
Usually it’s a one year suspension.
WILL GIVE BRAINLIEST
Which of the following best describes the flow of energy in the Everglades food web shown below?
American alligator → carp → insects → mangrove; about 10 percent of the energy in one trophic level is transferred to the next trophic level.
Egret → carp → insects → sawgrass; about 90 percent of the energy in one trophic level is transferred to the next trophic level.
Mangrove → insects → carp → egret → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level.
Sawgrass → insects → Southern leopard frog → raccoon → American alligator; about 90 percent of the energy in one trophic level is transferred to the next trophic level.
Mangrove → insects → carp → egret → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level best describes the flow of energy in the Everglades food web.
What is a Food web?This consists of the food chains which are present in the ecosystem and it shows the food relationship between organisms.
Plants who are referred to as primary producers are the organisms who possess the most energy due to them undergoing photosynthesis and the food web starts with them which in this scenario is mangrove. This is then eaten by insects and then carp eats the insects.
The tertiary consumers are the ones with the least amount because only 10 percent is transferred from one trophic level to another due to some being lost as heat and during metabolic reactions and an example in this case is American alligator.
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What is shown in the image below?
A food web titled Chesapeake Bay Waterbird Food Web. It shows a very complex food web with many different food chains of various species displayed in 5 categories. Primary Producers: phytoplankton, S A V, vegetation. Herbivores: zooplankton, benthic invertebrates, herbivorous ducks, geese and mute swans. Primary consumers: small planktivorous fish, bivalves. Secondary consumers: gulls and terns, wading birds, large piscivorous fish, sea ducks, tundra swan. Tertiary consumers: osprey, bald eagle.
food chain
trophic chain
food web
energy web
Answer:
food web
Explanation:
The interrelated feeding interactions between creatures in an environment are referred to as a food web. The highest abundance of organisms frequently occurs at the lowest levels of these interactions, which are connected by an energy transfer.
Food web of American estuaries don't get much bigger than the Chesapeake Bay. Food web in the Chesapeake Bay, its tributaries, and the Coastal Bays are home to a wide variety of plants and animals, each of which has particular habitat needs in terms of things like food, light, temperature, water, nutrients, shelter, and other elements. During different phases of their life cycles, certain species use distinct environments in food web. For food, all living things are interdependent. Examining the relationships between species that eat one another helps us to understand how interconnected all organisms, including humans, are.
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plant cells____ water and start to wilt
The answer is lose.......
Name three abiotic resources that are necessary to the continued health of the ecosystem.
Answer: Water, Sunlight, and Soil
Explanation: Water is needed for any life to exist in a ecosystem, sunlight lets plants create their food and thus feed the rest of the food web, and soil is also needed for plants to take root and grow to feed others.
1. Normal trade winds push warm surface water away from the coast of South America. This water is replaced by other sea water in a process called upwelling.
Upwelling results in:
Student Selected Incorrect
A.
higher than normal tides.
Disabled
B.
fewer fish to be caught by fishermen.
Disabled
C.
cold and nutrient-rich water along the coastline.
Disabled
D.
more rain along the coast.
Normal trade winds push warm surface water away from the coast of South America. This water is replaced by other seawater in a process called upwelling. Upwelling results in cold and nutrient-rich water along the coastline.
The result is the everyday float of water far away from South the USA decreases and ocean water piles up off the South the USA. This pushes the thermocline deeper and decreases the upwelling. within the tropical western Pacific, weakening or reversal of the alternate winds causes the pool of heat floor water within the western tropical Pacific to glide eastward along the equator closer to the coast of the South us.
This is due to the exchange winds blowing from east to west along the equator allowing the upwelling of bloodless, nutrient-rich water from deeper degrees off the northwest coast of South the united states. also, these identical change winds push water west which piles better inside the Western Pacific.
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▸ a Write down the physical states of each compound at ▸ i 30°C. ▸ii -100°C ► iii 80°C
The physical states of water ([tex]H_{2} O[/tex]) at the following temperature will be:
30°C: Liquid-100°C: Solid80°C: LiquidLiquid, gas, and solid are the three basic states of matter.For instance, water is a gas above 100 degrees Celsius and a solid below 0 degrees Celsius. At varying temperatures, different materials change their states; for instance, metals become liquid at significantly greater temperatures.Although minuscule particles make up gases, liquids, and solids, their behavior vary between the three phases.The particles in a
Gas is kept well apart and is not arranged consistently.Liquid are close together but not in a predictable pattern.Solids are compactly arranged, typically in a predictable way.The particles in a
Gas moves freely and vibrates at great speeds.Liquid moves, vibrates, and slides past one another.Solid jitter (vibrate), but typically don't move haphazardly.Learn more about the states of matter here:
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