Answer:
water enters by osmosis, vacuole is used to pump out excess water.
Explanation:
Paramecia that live in freshwater would have contractile vacuole because they will need to get rid of excess water unlike those that live in salt water.
The vacuole primarily functions to get rid of excess water from the cell.
Freshwater is hypotonic to the cytosol of paramecia. Thus, water will always enter the paramecia cells by osmosis. If the excess water is not excreted from the cell, turgidity will result and the cell may burst.
On the other hand, salt water is likely hypertonic to paramecia cells. Thus, instead of having vacuoles for water excretion, a mechanism would have to be put in place so as not to lose too much water to the surrounding salt solution. In other words, a vacuole would be totally redundant in the hypertonic solution.
More on the contractile vacuole can be found here: https://brainly.com/question/13137778
Please help me this is the last question and I need to get it right please help me.
If John and Sam both push on a boulder with a force of 30N, but in opposite directions, what will happen to the boulder?
Question 4 options:
The boulder moves towards Sam
The boulder moves away from John and Sam
The boulder moves towards John
The boulder will not move.
The boulder will not move, because the net effect of the force is reduced if two people apply the same force to the object, hence option D is correct.
What is the effect of the force?Force is defined as applying strength or energy to applying on the object cause it creates motion. It is not in any object force is applied to the object by another person.
If John and Sam both push on a boulder with a force of 30N, having no effect on the boulder because they are applying the same force boulder but in opposite directions.
If any force is applied to the object but in the opposite direction, the net force is the difference between them, so it reduces the net force.
Therefore, the boulder will not move, due to the net force being reduced if the same force is applied to the object in the opposite direction.
Learn more about force, here:
https://brainly.com/question/15776275
#SPJ6
According to the table "Balance of the Carbon and Nitrogen" on page 6, which substance has the highest carbon to nitrogen ratio?
Pick the answer choices down below!!!
Answer: Vegetable waste
Explanation:
please help me with this!! I will mark brainliest!
What would happen to the oxygen cycle if the carbon cycle didn't exist?
Matt’s eye color is different from his father’s eye color. Which statement best explains this occurrence? *
A The DNA regulating Matt’s eye color is identical to his mother’s DNA.
B Most of the DNA regulating Matt’s eye color is inherited from his father.
C Most of the DNA regulating Matt’s eye color is inherited from his mother.
D The DNA regulating Matt’s eye color is a unique combination of both of his parents’ DNA.
Answer:
I think it's A or D because he had to get his eye color from his mother since it's not the same as his father or it could be a mix of two different colors like D says, sorry lol
HELP, PLEASE!! ON THIS I ALREADY DID MOST OF IT! IT IS TOO SMALL TO READ!!
Answer: TT,TT,Tt,Tt tt,tt,tt,tt
i think
Explanation:
science about body :P plz no troll
please I need help
Based on
-climate
-global warming
-temperatures
Answer for #8:
Cold water is heavier than warm water, and because of that it sinks. Ice dissolving into the water cools the ocean, causing it to drown. This creates a wave by which cold water is drowning near the poles, which forces the water into the depths of the ocean, leading the entire ocean to swirl. This cold, thick water is then forced back up against the west shores of the continents where it can be warmed.
Hope this helped,
0Drink0Milk0
Who controls selective breeding?
a
It occurs naturally.
b
Entire populationsIt is controlled by humans.
Fill in the blank.
_____ _____ curvy wavy ___ ___ lil waist!
-Megan Thee Stallion
Answer:
body crazy big titties
Explanation:
i know the songwho doesn'tFill in the blank.
Now from the top make it drop dass sum ____ now getta _____ ina mop
-Cardi & Megan
Answer:
wet a cat, bucket
Explanation:
the fact that these keep popping up
wet a/s/s pus/s/y
Bucket
which of these is not a molecule
A) DNA
B) water molecules
C) single atoms
D) medicines
Answer:
d) medicines
have a nice day! <3
What two human systems deal with allergies?
One is immune system.
Which example is NOT an organism?
Question 1 options:
lung
mold
human
bacteria
Question 2 (3 points)
All living things are made of ______.
Question 2 options:
multicellular
organisms
cells
tissues
Question 3 (3 points)
To function on their own, what must unicellular organisms do?
Question 3 options:
make tissues
work with other cells
do all jobs for survival
perform a specialized task
Question 4 (3 points)
Which type of organism is ale to cause an infection or contagious disease?
Question 4 options:
animal
plant
bacteria
rose
Question 5 (3 points)
A fish laying hundreds of eggs is an example of _________.
Question 5 options:
maintaining structure
all of the answers are correct
obtaining energy
producing offspring
Question 6 (3 points)
What do we call the branch of science for classification of organisms?
Question 6 options:
Taxonomy
Chemistry
Physics
Biology
Question 7 (3 points)
What is an example of "maintaining structure"?
Question 7 options:
a cell dividing
eating an apple
catching a fish
healing a broken arm
Question 8 (3 points)
All successful organisms must be able to do what three things?
Question 8 options:
obtain energy, produce offspring, eat
obtain energy, eat, play video games
obtain energy, produce offspring, maintain their structure
maintain their structure, eat, build a home
Question 9 (3 points)
Which example is NOT a basic need of all organisms?
Question 9 options:
soil
appropriate enviornment
water
food
Question 10 (3 points)
What do all living things need?
Question 10 options:
energy, water, sunshine, and protection
water, parents, a place to live, and air
oxygen, an outer covering, parents, vitamins
food, water, air, and a place to live
Answer:
1: Mold 2: Cells 3: do all jobs 4: bacteria 5: producing offspring 6: Taxonomy 7: Healing a broken arm 8:obtain energy, produce offspring, maintain their structure 9: soil (I think) 10: food, water, air, and a place to live
Answer:
1. lung.
2. cells.
3. do all jobs for survival.
4. bacteria.
5. producing offspring.
6. Taxonomy.
7. a cell dividing.
8. obtain energy, produce offspring, and maintain their structure.
9. soil.
10. food, water, air, and a place to live.
Explanation:
1. all of the other options are organisms, while a lung is an organ.
2. All living things are made of cells
3. All unicellular organisms must be able to perform all the functions necessary for life. Meaning do all the jobs needed for survival.
4. Bacteria is the organism listed that is able to cause an infection or contagious disease.
5. A fish laying hundreds of eggs is an example of producing offspring. While it could also be an example of maintaining structure, a fish cannot obtain energy by laying eggs. So, the best answer is producing offspring.
6. Taxonomy's definition is the branch of science concerned with classification, especially of organisms; systematics.
7. a cell dividing is maintaining structure. After growth, cell division by mitosis allows for continual construction and repair of the organism. The primary concern of cell division is the maintenance of the original cell's genome. So, this is the best option for the question.
8. The second option is wrong, because not every organism plays video games. The 4th option is wrong, because not every organism builds their own home. And finally, the first option is incorrect, because plants do not physically eat they obtain their energy through photosynthesis. So, the correct option is the 3rd one.
9. Soil is not needed for all living organisms, but the other options listed are necessary.
10. the second and third option are incorrect, because not every living thing needs a parent. The first option is incorrect, because not every living thing needs sunshine and it does not list the other necessary components. So, the correct answer is the last option. And a place to live can also mean an appropriate environment.
an air mass exist in the middle upper part of the United States what type of air mass is this and what are its main characteristics choose all that apply
Answer:
Air masses are characterized by their temperature and humidity properties. The properties of air masses are determined by the the underlying surface properties where they originate. ... Upon movement, air masses displace residual air over locations thus changing temperature and humidity characteristics.
Explanation:
According to the American Council of Exercise, overweight people have, on average, greater than 30% body fat. In graph B, what do you notice about the amounts of hydrogen and methane in subjects with healthy body fat percentage compared to subjects who were overweight?
Answer:
Subjects in the “normal” group had a normal amount of hydrogen, 20 ppm or less, and a normal amount of methane, 3 ppm or less. If subjects had greater amounts than the normal amount of hydrogen (≥20 ppm) detected but had less than the normal amount of methane (≤3 ppm), they were considered hydrogen positive (represented by the “Hydrogen Only” bar), while ≥3 ppm of methane detected but ≤20 ppm of hydrogen was considered methane positive (represented by the “Methane Only” bar). If subjects had greater than the normal amounts of both gases (≥20 ppm of hydrogen and ≥3 ppm), they were considered hydrogen and methane positive (represented by the “Methane and Hydrogen” bar).
i hope this helps
PLZ help ILL GIVE BRAINLEIST
Answer:
it was a fort in 1669
Explanation:
hope this helps <3
Sometimes a cell is compared to a city. How would the energy needs of a cell be compared to the energy needs of a city?
The phase in which a cell spends most of its life is interphase. True or False
Fill in the Blank
Complete the following sentence.
The discovery of plastic resulted from a(n) ____________
attempt at making an alternative form of insulation for electronics.
Using the dichotomous key, Which kingdom classification of the organism is described above?
A.
Fungi
B.
Eubacteria
C.
Protista
D.
Animalia
Answer:
Fungi
Explanation:
an air mass exists off the Pacific coast of California what type of air mass is this and what are its main characteristics choose all that apply
This is hard. pls help. Write an equation for cellular respiration. Write an equation for photosynthesis. How are these two equations related?
Answer:
equation for cellular respiration: C6H12O6 + 6O2 + 6H2O → 12H2O + 6CO2
equation for photosynthesis:: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
Plants make their own food by photosynthesis. During photosynthesis a plant takes in water, carbon dioxide and light energy, and gives out glucose and oxygen.
Explanation:
The Punnett square below shows a cross between 2 pink flowers. What is a percentage that a pink flower will be produced? *
Answer:
50%
Explanation:
rr, rw, rw, ww
Which are characteristics of flukes? Check all that apply. They are free living. They are a type of flatworm. They reproduce sexually. They have eyespots. They are segmented.
Answer:
cad
Explanation:
If you had to define ecological succession in your own words in a 140 character text, how would you define it?
Answer: Succession is like winning a race. You get to acomplish something that you wanted to do. sorry this is short
Explanation:
brainliest! question is in pic
Answer:
I know the muffin man and the muffin man knows me lol
Explain the relationship between genetic change and adaptation.
Answer:
Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations. Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment. A mutation is an alteration of the DNA sequence.
Explanation:
Just don'y copy a paste, try to paraphrase a bit, don't want to get in trouble!!!
Answer:
Natural selection is the process by which adaptations occurs over a series of generations, while mutations can cause instant adaptations. A mutation is an alteration of the DNA sequence. Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment.
Explanation:
does this help?
The predictions of an assumed hypothesis are the result of _______ reasoning.
A. inductive
B. deductive
C. logical
Write each characteristic in the space below for each photograph. Some characteristics will be described more than one photograph.
Characteristics:
Grains have been eroded a great distance.
Grains have been eroded a short distance.
Differential weathering.
Sediments deposited in horizontal layers.
Likely deposited after being eroded by flowing water.
Well-sorted sediment.
Differential weathering (also I’m not sure why there’s two of them but this is another characteristic as well)
Sediments deposited in horizontal layers (again, I’m not sure why there’s two of them but this is another characteristic as well)
I do not know what the answer is.