Answer:
Autotrophs
Explanation:
Ex. Plants (Autotrophs) gain energy from the sun and turn it into and produce oxygen (Chemical energy)
Answer: Autotroph
Explanation: Because I did the test:)
9. how do sister chromatids compare to each other?
Answer:
The sister chromatids are identical to one another and are attached to each other by proteins called cohesins. They are formed.
Explanation:
4 Student's were testing the physical properties of an unknown element.
They hit the element with a hammer and noticed that the element
shattered. They then used a flashlight and noticed the element reflected
little light. Based on these observations what could this element be? *
O Sodium
O Colbalt
Bismuth
O Phosphorus
Answer:
O Sodium
Explanation:
briefly explain natural selection
Answer:
Explanation:
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.
Question 1(Multiple Choice Worth 2 points)(05.05 MC)How does the human immune system initially respond to a pathogen?
Immediately, the pathogen has been recognized:
Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.
The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.
Antibodies helps to immobilize pathogen for macrophage to feed on.
if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.
The light-dependent reaction should happen before the Calvin cycle because ________.
Select one:
a. its products are important to the fixation of carbon dioxide.
b. plants are more active during the day than at night.
c. photosynthesis happens faster when there is sunlight.
d. more products are produced during the day than at night.
Why do volcanoes usually form at plate boundaries?
Answer:
When plates move away from each other at divergent plate boundaries, interesting things happen. For example, when plates move apart, molten rock from the Earth's core ascends and forms new crust. ... This molten rock can rise up to the surface, forming a volcano, and causing volcanic eruptions.
without making any other adjustments the _____ can be increased by focusing properly.
Resolution is the ability that a microscope has to distinguish fine details. Without making any other adjustments the RESOLUTION can be increased by focusing properly in a brightfield microscope.
A brightfield microscope (also called compound light microscope) is a light microscope that produces dark images against a bright background.
The brightfield microscope is widely used in cellular biology and microbiological laboratories.
The resolution of the brightfield microscope is limited to 0.2 micrometers (µm).
This maximum value can be reached by changing the objective lens.
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Particles that are far apart and can move freely is what
Answer:
a gas
Explanation:
In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.
Answer:gas
Explanation:
In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.
……..Help…………please……..thanks
which type of organelle is primarily involved in the synthesis of oils, phospholipids, and steroids?
Answer:
mitochondrion
Explanation:
its because respiration takes place here where food is broken down to small particles
Pls help. Just need to know if I picked the right answer.
Answer:
hi you got it right, b) Eliminating government funding of research.
Explanation:
Give advantages of endothermic animals
Answer:
The advantages of endothermy are well known: the ability to occupy thermal niches that exclude many ectothermic vertebrates, a high degree of thermal independence from environmental temperature, high muscular power output and sustained levels of activity, to name but a few.
The major advantage of endothermy over ectothermy is decreased vulnerability to fluctuations in external temperature. Regardless of location (and hence external temperature), endothermy maintains a constant core temperature for optimum enzyme activity.
How are organisms classified into subgroups?
What is the best definition of direct cause of disease?
A. a cause that directly leads to an abnormal condition without interference
B. a cause that eventually leads to an normal condition without interference
C. a cause that indirectly leads to an abnormal condition with interference
D. a cause that directly leads to a normal condition without interference
Answer:
D. a cause that directly leads to a normal condition without interference
Explanation:
Direct contact infections spread when disease-causing microorganisms pass from the infected person to the healthy person via direct physical contact with blood or body fluids.
how did you get this answer i don't get it
What question?- there's nothing there
3-5 sentences for each question pls !!! need help ASAP
2. A volcano erupts 40 miles from an owl’s ecosystem. Ash from the eruption blocks sunlight over your ecosystem for several (7-10) months.
a. Explain what happens within the food web in the weeks that follow the eruption.
b. The ash clears and several more months go by. What do you think will happen to your ecosystem?
Answer:
a. Sunlight cannot penetrate through the ash clouds. thus photosynthesize won't occur. so the food chain will begin to collapse from the producer and primary consumer. owls will be out thinking that it's night. they will catch fish resulting in an imbalanced ecosystem. the aquatic population will decrease. then it's the doom days for owls. they will emigrate or will die.
b. the ecosystem will restore. that's how nature works.
The volcanic eruption destroyed the owl ecosystem because it prevented the sun's light from entering, so the food web of the ecosystem was destroyed because there was no food, and a new ecosystem will grow after many months.
What is the ecosystem?The ecosystem has both biotic and abiotic components, and there are many food chains and food webs present in the ecosystem, so the volcanic eruption harmed the ecosystem and killed the populations present, but after many months, when the ashes from the volcanic eruption are cleared, a new population will grow and a new community will be seen.
Hence, the volcanic eruption destroyed the owl ecosystem because it prevented the sun's light from entering, so the food web of the ecosystem was destroyed because there was no food, and a new community will grow after many months.
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Is this poison sumac?
Answer:
Definitely not
Explanation:
Usually they have clusters of small green or white berries on them, as well as smaller, glossier looking leaves.
what types of symmetry do enchinoderms have and when do they have them?
Answer:
Hi hope this is right
Explanation:
Echinoderms have a spiny endoskeleton. They have radial symmetry as adults but bilateral symmetry as larvae. Echinoderms have a unique water vascular system with tube feet. This allows slow but powerful movement.
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Two methods of testing that would be more accurate than litmus paper
Answer:
pH meter and pH paper.
Explanation:
There are a few other ways that are commonly used, including titration, but most are tedious and require detailed hands-on work. A pH meter is normally assisted by the use of a computer or a digital user interface. The use of pH paper can be likened to the use of a Galileo thermometer.
how to prevent yeast infection while on antibiotics?
Answer: some things you can do
Explanation: talk to your doctor, use yogurt, replenish your good bacteria, and use an over-the-counter antifungal.
Which are accurate statements about dark matter? Select two correct answers
scientist have hypotheses about dark matter but need more data to test ideas
Scientists throughly understand what dark matter is and what it does
Scientists are not convinced that dark matter exists
New data could cause scientist to change their hypotheses about dark matter
The statements that accurately describe the views of scientists about dark matter are;
Scientists have hypotheses about dark matter but need more data to test ideas.New data could cause scientist to change their hypotheses about dark matter.Scientists do not really understand what dark matter is but they have ideas about the things it is not.
For instance, scientists know that dark matter is not bright like our planet and the stars. This can be deduced from its name, "dark matter."
Scientists also believe that dark matter is not composed of antimatter. If it were, they would be able to detect this through the emission of gamma rays.
Scientists have other speculations but if new data comes with convincing proofs, they may have to change their present hypotheses.
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Answer:
New data could cause scientists to change their hypotheses about dark matter.
Scientists have hypotheses about dark matter but need more data to test their ideas.
usain bolt, a world champion sprinter, can run a 10-meter split in 0.82 seconds. say you obtain a quadriceps muscle sample from usain bolt and compare it to one from a 25-year-old male long-distance runner. what differences do you expect to observe between those two muscle samples? select all that apply.
A quadriceps muscle sample from Usain Bolt and compared it to one from a 25-year-old male long-distance runner, and it is seen that there are more fast-twitch fibers and red and white muscle fibers of larger cross-sectional area in Usain Bolt's leg muscles.
What is the distinction between fast-twitch and slow-twitch muscles?Athletes who run fast, such as sprinters, have more fast-twitch muscle, which is called "white muscle," as they need more energy for a short period of time, and as a result, the muscles anaerobically respire. The slow twitch muscle, called "red muscle," is more commonly seen in the long distance runner, such as in the marathon, and these runners need a continuous supply of energy for a long time, so aerobically the muscle respires.
Hence, a quadriceps muscle sample from Usain Bolt was compared to one from a 25-year-old male long-distance runner, and it was seen that there are more fast-twitch muscle fibers and red and white muscle fibers with a larger cross-sectional area in Usain Bolt's leg muscles.
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The question is incomplete; the complete question is below.
usain bolt, a world champion sprinter, can run a 10-meter split in 0.82 seconds. say you obtain a quadriceps muscle sample from usain bolt and compare it to one from a 25-year-old male long-distance runner. what differences do you expect to observe between those two muscle samples? select all that apply.
more fast-twitch fibers in Usain Bolt's leg muscles
more mitochondria in Usain Bolt's leg muscles
red and white muscle fibers of larger cross-sectional area in Usain Bolt's leg muscles
the sun helps plants transform carbon dioxide into a simple carbohydrate called
Hi! Your answer is glucose.
What exactly is glucose? It originates from Greece, where it translates to "sweet." It's a type of sugar.
Good luck on your science!
The sun helps plants transform carbon dioxide into a simple carbohydrate called glucose.
What is carbohydrate?Sugar molecules make up carbohydrates, or carbs. Carbohydrates are one of the three primary nutrients included in foods and beverages, along with proteins and fats.
Glucose is created by your body's breakdown of carbs. The primary source of energy for the cells, tissues, and organs in your body is glucose, sometimes known as blood sugar.
In the oxidation-reduction process known as photosynthesis, carbon dioxide is reduced to carbohydrates and water is oxidized.
The process by which light energy is transformed into chemical energy in the form of sugars is known as photosynthesis. Using light energy, glucose (or other sugars) are created from carbon dioxide and water, with oxygen being released as a byproduct.
Thus, the carbohydrate called glucose is formed by the reaction of sun in plants.
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Does the Tilt of the Earth's axis shine on different latitudes at different angles throughout the Year?
True
False
yes so true I think
hope this helps
Single cells are also known as unicellular organisms. ... They can live and carry out all of their life processes as one single cell.
Answer:
true
Explanation:
they do all things by one cell reproduction feeding etc
Why are enzymes important, and how do they contribute toward metabolism?
Answer:
Why are enzymes important, and how do they contribute toward metabolism? Enzymes control activities of the cell by catalyzing reactions. Virtually all cellular activities require enzymes. ... Light provides energy to drive the light-dependent reactions.
Explanation:
the primary barrier of biological membranes consists of:
Answer:
Biological membranes consist of a double sheet (known as a bilayer) of lipid molecules. This structure is generally referred to as the phospholipid bilayer. In addition to the various types of lipids that occur in biological membranes, membrane proteins and sugars are also key components of the structure.
Explanation:
Which phrase describes a nuclear chain reaction?(1 point) a series of reactions in which particles from one reaction trigger the next reaction a reaction in which small nuclei combine into a larger nucleus a reaction in which particles spontaneously emit radiation a type of reaction which only takes place in the sun and other stars
please help
Answer:
series of reactions in which particles from one reaction trigger the next reaction.
Explanation:
If your a connexus student here for the Modeling Nuclear Processes Quick Check, here are the answers!
1-the process by which small nuclei combine into a larger nucleus
2-a series of reactions in which particles from one reaction trigger the next reaction
3-disturbing a drop of water such that it breaks into smaller droplets
4-popping a bag of popcorn
5-The resulting nucleus is more stable than the original nucleus. The nucleus can be of a different element than the original.
Hope this helps! Good Luck!
A nuclear chain reaction happens when a single nuclear event averages out one or more further nuclear reactions, opening the door for a potentially endless chain of similar processes. Therefore, option (A) is correct.
What is a nuclear chain reaction ?A nuclear chain reaction happens when the output of one nuclear reaction triggers the occurrence of further nuclear reactions. These cascade reactions are nearly invariably a succession of neutron-excessive fission events. The moniker "chain reaction" comes from the fact that these extra neutrons have the potential to trigger more fission events. The functioning of nuclear power plants depends on nuclear chain reactions.
About a million times more energy is released during nuclear reactions than during chemical ones. Every fission event must result in precisely one additional fission event in order for a nuclear chain reaction to continue.
Therefore, option (A) correctly describes the nuclear reaction.
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Natural laws are:
a. a process of discovering the answers to questions.
b. a preliminary explanation.
c.rules that explain how all things in the entire universe always behave.
d. a form of inquiry.
Answer:
bxhxnxvjxxvhxjxjxbxbxhx xhxbxbxjx
what can cause a cell to inherit the incorrect number of chromosomes?
Answer:
These changes are not inherited, but occur as random events during the formation of reproductive cells (eggs and sperm). An error in cell division called nondisjunction results in reproductive cells with an abnormal number of chromosomes
Explanation:
Answer:
Nondisjunction.
Explanation:
They perform as random events during the formation of reproduction cells but they arent inherited. A result of reproductive cells with an abnormal number of chromosomes is caused by nondisjunction.
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