Answer:
In an oceanic environment the photic zone is the zone where light can be received it's usually from 0 to 200 m deep but this depth can be modified by the turbidity of the water. The aphotic zone is the zone where no light is receives it goes from 200 to the bottom of the sea.
Explanation:
A student used a microscope to observe Elodea submerged in a solution. The student observed the cell cytoplasm pull away from the cell wall and clump together in the center of the cell. Which statement best explains why this occurred? A-The cell was submerged in a hypertonic solution. B-The cell was submerged in a hypotonic solution. C-The cell was submerged in a pure solution. D-The cell was submerged in an isotonic solution.
Answer:
A
Explanation:
The correct answer would be that the cell was submerged in a hypertonic solution.
A hypertonic solution is a solution with a higher concentration of solutes than that of the cytosol of a cell suspended in it. When a cell is suspended in a hypertonic solution, water moves osmotically from the cytosol to the hypertonic solution. This causes the cytoplasm to collapse and the cell becomes flaccid.
The correct option is A.
Answer:
D. The cell was submerged in a hypertonic solution.
Explanation:
can you pls help me ??
A population distribution shows _______.
a.the distribution of age groups within a population
b.the amount of organisms in a unit area
c.the total number of organisms in a population
d.where and in what arrangement organisms are located
Answer:
D
Explanation:
Think about the definition of “distribution “.
Biology I need help please
Answer:
False
Explanation:
During the citric acid cycle only 1 ATP is produced
Answer:
True
Explanation:
The citric acid cycle also produces 2 ATP by substrate phosphorylation and plays an important role in the flow of carbon through the cell by supplying precursor metabolites for various biosynthetic pathways.
Which of the following occurs when the tilt of the axis is not toward or away from the sun? A Winter Solstice B Spring Equinox c Summer Solstice d both spring and fall equinox
Answer:
AWinter Solits
Explanation:
Answer:
ROOF ROOF
Explanation:
brainliest.
What is the process called that takes sunlight, carbon dioxide and water to make sugar and oxygen?
Answer:
Photosynthesis
Explanation:
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
Answer:
Photosynthesis
Explanation:
1) How might stem cells be a solution to paralysis caused by spinal injuries? The stem
cells could replace the nerve cells that have died as a result of the injury.
2) What are other potential medical uses?
Answer:
1. A stem cells can be defined as totipotent cells because they have the capacity to self renew themselves.
Spinal cord injury leads to loss of nervous tissue also loss of motor and sensory function, currently there is no such treatment available that can completely repair the spinal cord, but the transplant of stem cells may help in the spinal cord repair.
The stem cells could never replace the nerve cells that died as a result of the injury, stem cells can help the nerve cells to repair.
2.Other medical uses are:
To repair the damaged organs or tissues Correct the genetic defects safely testing of new drug.the process of diffusion and active transport are both used to
Answer:
Move molecules into or out of cells of the body
Explanation:
Move molecules into or out of cells of the body
The passage of genetic instructions from one generation to the next is known as what?
Answer:
heredity
Explanation:
Answer: heredity because it is
Match each word with the correct definition
Atom
Particle
Phase
Scientific Theory
Answer choice:
A) a tiny fragment
B) an explanation
C) the basic unit of an element
D) a unique form of matter in which it can exist
Answer:
here you go
Explanation:
A= Particle
B= Scientific Theory
C= Phase
D= Atom
Compare and contrast a few aspects of animal and plant cells. You can focus on intra- and extracellular structures they share or don't share, but also be sure to describe processes they both utilize or don't both utilize. Some things to consider: How they obtain 'food' (what is their organic carbon source?) What structures do they share that prokaryotes lack? What do they share that all living cells also share? Do they use CO2, and/or O2 in any processes?
Answer and explanation:
Although they share some similarities because they are both eukaryotes, plant cells and animal cells are quite different from each other, which is logical since they have distinct lives.
For example, animal cells and plant cells both have a cell membrane, but only the plant cells have a cell wall - which is thick and resistant, and this makes sense because they are more exposed to mechanical and osmotic stress.
Since animals can move towards sources of water but plants cannot, there's also a way in which plants store water in the cells: vacuoles. Animal cells have vacuoles as well although they are much smaller than the single huge vacuole that plant cells have.
All living organisms need the energy to sustain different cellular processes. The organelle in charge of the chemical reactions behind the obtention of energy is the mitochondria, which is present in all cells, but the mitochondrion needs a specific substrate: glucose. Glucose is obtained in diverse ways: animals move and find food that contains glucose in it, while plants produce their own glucose with a specific process called photosynthesis, for which they need an organelle called chloroplast, which animals do not have. In order to transform the glucose into energy, the mitochondria end up generating CO2, which animals expel from their bodies by exhaling. This CO2, now in the air, is used by plant cells as a substrate in photosynthesis (which needs sunlight as well) to produce glucose and also O2, that will be inhaled by animals and used by their tissues.
All living organisms have one thing in common: they possess DNA. DNA contains all of the genetic information of an organism, and it is present in almost every cell of that organism -if it happens to be a multicellular being-. While prokaryotes have their DNA condensed into a single circular chromosome, eukaryotes like plants and animals, have their DNA form many linear chromosomes (quantity varies according to the species) and these chromosomes are inside a very specialized organelle: the nucleus, which prokaryotes do not have.
Where do Earth’s convection currents occur?
the lithosphere
tectonic plates
the asthenosphere
the subduction zone
Answer:
The asthenosphere
Explanation:
Heat is generated from the radioactive decay of elements in the interior of the Earth, which creates magma in the asthenosphere. Hope this helped
Answer:
the athenosphere
The mantle is where convection currents occur. Magma from the core help fuel these currents. The answer to the question is the athenosphere.
Hope this helps you!
If a person combat the disease without a vaccine introduced to his body,such immunity is known as
natural active immunity
natural passive immunity
Artificial active immunity
artificial passive immunity
Answer:
natural active immunity will be the answer
Given the formula D=M/V, a substance with a Density of 50 gm/cc, with a Volume of 10 cc, has a Mass of ___________
A
500 cc
B
250 cc
C
500 gm
D
500 cc
Answer:
A
500 cc
Explanation:
D= M/V
50 =M/10
M =50×10
=500 cc.
Hope it helped.
A scientist uses electricity to break down water into hydrogen gas and oxygen gas. Which statement best explains what happens? A. A chemical change occurs. O B. A base neutralizes an acid. O c. An acid neutralizes a base. O D. A physical change occurs.
Answer:
A. A chemical change occurs.
Explanation:
Two students completed an experiment to determine if pesticide use at local farms was causing fish kills in a local pond. The steps of the experiment are listed below. Select one location to collect water samples in the pond. Collect a 5-mL water sample at 8 am for two days. Measure the amount of pesticide present in each sample using the same measurement tools. After analyzing their data, the students conclude that pesticide runoff from farms is not causing the fish to die in the pond. Which of these statements best describes why their conclusion is not reliable? The pesticide measurements were the dependent variable. The samples were collected at different times. The samples were only collected for two days. The time of sample collection was not an independent variable.
Answer:
The pesticide measurements were the dependent variable
Explanation:
According to this question, an experiment to determine if pesticide used at local farms was causing fish kills in a local pond was conducted by two students. They followed the following steps:
- Select one location to collect water samples in the pond.
- Collect a 5-mL water sample at 8 am for two days.
- Measure the amount of pesticide present in each sample using the same measurement tools
However, after analyzing the data, they concluded that "runoff from farms is not causing the fish to die in the pond". The students' conclusion is not reliable because THE PESTICIDE MEASUREMENTS WERE THE DEPENDENT VARIABLE.
Note that, the dependent variable in an experiment is the measured variable while the independent variable is the manipulated variable. In this case, the students ought to measure the death RATE OF FISH KILLS as the dependent variable instead. The PESTICIDE is the independent variable of the experiment not dependent variable. This was the reason for the unreliability of the conclusion.
Type fast if you don’t mind ty!!
Answer:
c
Explanation:
Which part of an animal or plant cell contains the cell's genetic information?
ribosome
mitochondria
cytoplasm
nucleus.
Answer:
nucleus
Explanation:
Deforestation is the permanent destruction of forests in order to make the land available for other uses. This process leads to fewer plants being available to conduct photosynthesis. Which of these is a possible effect of deforestation on the process of cellular respiration?
Answer:
A lesser amount of oxygen will be available for cellular respiration
Explanation:
Deforestation can be defined as the permanent removal of trees in forest areas for other land uses (for example, agriculture use). It is well known that deforestation has a negative effect on natural ecosystems. An important proportion of the oxygen in the air is generated by plants during photosynthesis, and it has been estimated that about 30% of the land photosynthesis is due to tropical forests. Aerobic cellular respiration is a metabolic pathway by which organisms use oxygen to produce energy in the form of ATP. In consequence, deforestation represents a serious problem to sustain cellular respiration, and ultimately to sustain life.
Answer:
Less oxygen is available for use during cellular respiration.
Explanation:
I just took the test
Drag the tiles to the correct boxes to complete the pairs.
Match the correct methods of irrigation.
involves distributing water over the
surface of the soil
involves use of pressurized nozzles
to spray water in a shower
involves use of advanced version of
sprinkler irrigation
involves use of emitters to control the
flow of water
involves the use of perforated pipes
sprinkler irrigation
arrowRight
sub-irrigation
arrowRight
surface irrigation
arrowRight
variable flow irrigation
arrowRight
trickle irrigation
arrowRight
Answer:
Surface Irrigation involves distributing water over the surface of the soil
Sprinkler Irrigation involves use of pressurized nozzles to spray water in a shower
Variable flow irrigation involves use of advanced version of sprinkler irrigation
Trickle Irrigation involves use of emitters to control the flow of water
Sub-irrigation involves the use of perforated pipes
Explanation:
Surface Irrigation involves distributing water over the surface of the soil by allowing water to flow into the farm from irrigation channels.
Sprinkler Irrigation involves use of pressurized nozzles to spray water in a shower on the plants.
Variable flow irrigation involves use of advanced version of sprinkler irrigation. It has a variable-flow control knob on it to vary the output and flow of water. It also ensures uniform water distribution.
Trickle Irrigation involves dripping water onto the soil at very low rates through a system of tiny pipes fitted with outlets called emitters or drippers in order to control the flow of water.
Sub-irrigation involves the use of perforated pipes to apply water below the soil surface in order to raise the water-table near the plant root zone as well as to remove excess water.
Answer:
Surface Irrigation involves distributing water over the surface of the soil
Sprinkler Irrigation involves use of pressurized nozzles to spray water in a shower
Variable flow irrigation involves use of advanced version of sprinkler irrigation
Trickle Irrigation involves use of emitters to control the flow of water
Sub-irrigation involves the use of perforated pipes
Explanation:
ridding the cell of material by discharging it from sacs at the cell surface is called
pinocytosis
phagocytosis
exocytosis
endocytosis
Click on 11:50am. What did Ben’s muscles produce when he ran after his paper.
Answer:
i guess heat or tension? muscles dont produce much
Explanation:
what did his muscles produce? the only thing i can think of would be tension, because muscles dont produce sweat, heat would also be an option
Evan's nightly chores include washing dishes. His mother cooks everything she prepares a bit too long. Because of this, Evan spends a lot of sweat, effort, and time washing dishes. He sees a commercial on television that claims a new dishwashing detergent, called Brand X, cuts through grease better than its competitor, called Brand Y. They back up their claim with testimonials from people who say they've used this new detergent.
What is a possible testable question (in correct format) that Evan might ask for in this scenario?
IV:
DV:
Answer:
product X and Y need to be in a controlled test to make see how they do undergoing the same things.
hope this helps :)
Explanation:
⚠️ i will mark brainliest
A team of engineers is designing a new ship. The engineers first build several models of the ship. Explain in your own words why the models could help the engineers
Answer:
The model could help the engineers by giving they a prototype to build off of so they have an idea of what they ship looks like, and if the test it, they could troubleshoot and see the errors/successes of the model.
Explanation:
The engineers first build several models of the ship as the model could help the engineers by providing them a prototype to build of so that they have an idea of what or how the ship will looks like, and if they test it, they could troubleshoot and see the errors or successes of the model of the ship.
What are the fields in which science is applied?Science has the factual based knowledge and it has about the Nature as well as the natural world that has created on the basis of observations and the experiments. It has the study of the experiments and observations and it has totally depend upon the scientific result that has obtained after the scientific experiments.
There are several fields in which science has been applied and these field are healthcare, telemarketing, environmental engineering, banking, government regulation, space, biochemistry, physics, chemistry, biochemistry and astronomy, engineering.
Therefore, The engineers first build several models of the ship as the model could help the engineers by providing them a prototype to build of so that they have an idea of what or how the ship will looks like, and if they test it, they could troubleshoot and see the errors or successes of the model of the ship.
Learn more about science here:
https://brainly.com/question/12842883
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A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old
Answer:
The age of the rock is 5 million years
Explanation:
Fraction of radioactive substance remaining = 6.25% = 625/10000 = 1/16
Number of half-lives undergone by the substance to leave behind 1/16 of the original sample
1/16 = (1/2) * (1/2) * (1/2) *(1/2)
Therefore, the substance have decayed 4 times
One half=life = 1.25 million years
Four half-lives = 4 * 1.25 million years = 5 million years
Therefore, the age of the rock is 5 million years
The energy available to consumers determined by subtracting the energy used by plants from the total energy
transformed by the process of photosynthesis.
А
et your pas
Primary productivity
B
Gross primary productivity
С
Net primary productivity
D
Cellular respiration
Answer:
C. Net Primary productivity
Explanation:
In an the food chain of an ecosystem, energy is constantly being gained and most. Producers are the set of organisms that start the energy cycle via the process of photosynthesis. The gross primary productivity (GPP) is the amount of energy that the producer is able to capture from sunlight during photosynthesis.
The rate at which that captured energy is used to produce chemical organic compounds, which served as food, is called the primary productivity of the producer. However, the NET PRIMARY PRODUCTIVITY (NPP) is the energy available to consumers, which is determined by subtracting the energy used by plants via metabolism, from the total energy transformed by the process of photosynthesis. Hence, mathematically, NPP = GPP - R
Where, R = energy lost via respiration.
The structure of DNA resembles a twisted ladder. Which structural components form the rungs of the ladder?
A deoxyribose sugars
B phosphate groups
C nitrogenous base pairs
D ribosomes
answer is nitrogenous base pairs
Answer:
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
Explanation:
deoxyribose + phosphate group + thymine
Answer:
C
Explanation:
What type of bond is being formed in this polymerization reaction to link two amino acids together?
can you pls help me??
Answer:
photosynthesis
Explanation:
it's how plants produce energy
Ladybugs were introduced as predators into an
agricultural area of the United States to reduce the
number of aphids feeding on grain crops. This
action is an example of
A. biological control of insect pests
B. preservation of endangered species
C. conservation of natural resources
D. protection of watersheds
Answer:
I believe it would be A,