Plastids. Plant plastids are a group of closely related membrane-bound organelles that carry out many functions. They are responsible for photosynthesis, for storage of products such as starch, and for the synthesis of many types of molecules that are needed as cellular building blocks.
In scientific notation, a number is expressed as a value between 1 and 10
multiplied by a power of 10 *
True or false
The answer is true
Explanation:
The definition of scientific notation is: The method of writing very large or small numbers as a product of a number greater than or equal to 1 and less than 10 multiplied by a power of 10
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The given statement about scientific notation is true which states that in scientific notation, a number is expressed as a value between 1 and 10 multiplied by a power of 10 .
What is scientific notation?Scientific notation is defined as a way of expressing numbers which are too large or too small so that they can be easily written in decimal form. It can be referred to the scientific form or the scientific index form or even the standard form.
Base ten notation is used by scientists, engineers as it helps in simplification of arithmetic operations. It contains the significant figures which include all non-zero numbers , the zeroes between significant digits and zeroes which are needed to be significant.
In scientific notation, the base should always be ten. The exponent should be a non-zero integer and it can be either positive or negative.
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Which of the following statements best shows why it would be winter in the
southern hemisphere and summer in the northern hemisphere?
Answer:
If it says something about the Earths axis then that would be the answer
Explanation:
The Earth is on a bit of a tilt.
Why does the cell membrane need proteins embedded in it?
Answer:
Transporter or Carrier Proteins. They are embedded in the cell membrane to help transport glucose and amino acids across the membrane. They are too large to go through ion channels.
Explanation:
What is one of the most threatened ecosystems in the United States ?
Answer:
Caribbean coral reefs
Explanation:
and unfortunately many more :´(
if a full moon was just witnessed on earth when will the next full moon be visible
A)2 weeks
B)7 days
C)28 days
D)3 weeks
Answer:
Most likely 28 days
Explanation:
This is because the cycle of the moon is 28 days. After a full moon, the cycle has completed and thus, must start again from the beginning, taking another 28 days.
I hope Im correct
PLEASE HELP!!!!!!!!!!!!!!!!!!!! WHAT IS THE CONTROL GROUP FOR THIS
Hypothesis:
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
If predators are increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.
If pollution is increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.
If the amount of food available is increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.
Procedure:
The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable), outcome variable (dependent variable), and control group for this experiment.
Reminder: The test variable is the item that is changing in this investigation. The outcome variable is the item that you are measuring in this investigation. The control group is the group in the experiment where the factors being tested are not applied. It allows scientists to set a baseline to compare the experimental groups that do have factors applied to them.
Test variable (independent variable): Limiting factor- Food, Pollution, Predators.
Outcome variable (dependent variable): Cricket Frog (population)
Control group:
Answer:
decrease
decrease
increase
control group is the cricket frog population
Explanation:
Its the group that is being measured.
Answer:
Limiting factor- Food, Pollution, Predators.
Outcome variable (dependent variable): Cricket Frog (population)
Control group: Cricket Frogs in the Florida Everglades without changes in or manipulation of the population.
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why are there mosquitos
Answer:
To balance the food chain.
Explanation:
Mosquitoes actually play a big part in the food chain.. Animals such as frogs eat them, and what if other foods that frogs eat go out(Not saying it's gonna happen, its just a what-if)? They will have to resort to the mosquitoes. And if those were gone, the frogs would go out. Then a certain number of animals maybe maybe not would have to develop a new diet due to the extinction of frogs.
Answer:
i have no clue. i hate mosquitos.
Root cells of plants take in some minerals from the surrounding soil by spending energy. After the plant obtains enough minerals to maintain health, the plant will continue to absorb minerals from the soil. Which reason best explains why root cells need to spend energy in order to transport some minerals into cells?
The question is incomplete; the complete question is;
Root cells of plants take in some minerals from the surrounding soil by spending energy. After the plant obtains enough minerals to maintain health, the plant will continue to absorb minerals from the soil. Which reason best explains why root cells need to spend energy in order to transport some minerals into cells?
Root cells are unable to use sunlight energy for mineral uptake.
Mineral concentration is higher in root cells than in the surrounding soil
Cell membrane pores in roots are too small for passive uptake of minerals
Cell membranes in roots lack proteins for the passage of minerals.
Answer:
Mineral concentration is higher in root cells than in the surrounding soil
Explanation:
Mineral uptake by plant roots occurs by active transport of ions into the cells of root hairs, this process requires energy.
The concentration of minerals in the soil is quite low. The root hair cells of plants possess carrier proteins that carry mineral ions and move them into the cell against existing concentration gradient. This process requires energy and is known as active transport.
Transgenic plants have DNA from another organism inserted into its genome. The main benefit of using transgenic plants in crop production is
a to cause allergic reactions in people
b to reduce world hunger and malnutrition
c to create unknown wild hybrids
d to create unintended consequences in ecosystems
What is the role of Cdks? to create enzymes that produce chemical changes to signal the cell to move to the next phase of the cell cycle build structural components of DNA and energy-rich substances to activate the cyclins that cause progression of the cell cycle
Answer:to signal the cell to move to the next phase of the cell cycle
Explanation:
(Just took it)
Answer:
The answer is B. to signal the cell to move to the next phase of the cell cycle
Explanation:
Please help!!!!!! Here’s a picture!!!! HELP all my points
Match each term with its definition.
Water; Inorganic compound
Oxygen; Element found in water
Carbon; Element that is part of most organic compounds
Carbohydrate; Energy-rich organic compound
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proteins that act as catalysts in biological reactions
A. glucose
B. enzyme
C. ATP
D. molecule
PLS ANSWER ITS URGENT
True or False: Glycogen, Starch, and Cellulose are all polysaccharides.
Which is one way that the movement of matter through an ecosystem is different from the transfer of energy?
A. Only the movement of matter involves living things.
B. Only the movement of matter flows in one direction only.
O
C. Only the movement of matter occurs in an unending cycle.
o
D. Only the movement of matter involves feeding relationships.
Answer:
The answer is C. the movement of matter occurs in an unending cycle.
Answer:
Only the movement of matter occurs in an unending cycle.
just took the test
Which best describes the mantle?
A. molten metal
B. dense, solid metal ball
C. hot but solid rock
D. dry land and ocean floor
Answer:
C. hot but solid rock
Explanation:
Movement of materials into and out of cell from high to low is called.....
Answer:
Diffusion. The net movement down a concentration gradient, from high to low concentrations.
Explanation:
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please answer these questions
Answer:
I don't understand your question
solute concentration in the environment is higher than the solute concentration in the cell
Answer:
hypotonic
Explanation:
Can some help me? Please, due in 10 mins.
Answer:
C
Explanation:
If i were to explain i would be here all day and i have to go to town, contact me for an explanation.
Which of the following is the best evidence that Earth’s continents were once in vastly different positions than they are today? a. Penguins are found only in the Southern Hemisphere. b. Fossils of tropical plants are found in c. Volcanoes encircle the Pacific Ocean. d. Major rivers form deltas from continental erosion. explain for every answer PLEASE I NEED IT IS DUE TODAY!!!!!!!!!!!!!!!!
Answer:
whats the full answer for b I think its your best bet
Xylem tissue and phloem tissue make up a plant's transport system, A. true B. false
Answer:
true.
Explanation:
Which of the following characteristics is common to both bacteria and viruses?
Group of answer choices
can be killed using antibiotics
contains genetic material
has a cell wall
has a cell membrane
can be killed using antibiotics
Explanation:
Because kill them
11
chemo pollution Harmful chemicals added to water supplies
12
Live or dead organisms are added to water supplies
13
Increase of nutrients in the water, results in overgrowth of algae and
decrease of oxygen in the water
14
The land that water flows across, through, or under on its way to a stream,
river, lake or closed basin.
15
well
A hole drilled down into an aquifer.
16
An underground layer of permeable rock that fills with water from melted
snow or rain that drains into the ground, act as reservoirs for groundwater
17
A description of how well a rock or sediment lets water pass through
Answer:
11.Chemical Pollution 12.Non-Point source pollution 13.Euthrophication 14.Watershed 15.Well 16.Water Table 17.Permeability
Why do globes lean sideways?
A.To allow them to spin easier
B.To demonstrate gravity
C.To demonstrate the passing of the seasons
D.To demonstrate the tilt of the Earth's axis
Answer:
D
Explanation:
Globes lean sideways To demonstrate the tilt of the Earth's axis. Option D is correct.
Globes lean sideways to demonstrate the tilt of the Earth's axis. The Earth is tilted on its axis by about 23.5 degrees. This tilt is what causes the changing seasons on Earth.
When a globe is tilted, it helps us visualize how different parts of the Earth receive different amounts of sunlight at different times of the year. For example, during the summer in the northern hemisphere, the North Pole is tilted towards the Sun, so it receives more direct sunlight and experiences warmer temperatures. At the same time, the South Pole is tilted away from the Sun, receiving less direct sunlight and experiencing winter.
By showing the tilt of the Earth's axis, globes help us understand why we have seasons and why they occur at different times in different parts of the world.
To summarize, globes lean sideways to demonstrate the tilt of the Earth's axis, which helps us understand the changing seasons on Earth. Option D is correct.
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does anyone know if this is right??!!
its correct
hope this helps
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A sample of seaweed contains two liters of water and has 100 grams of salt dissolved in its cells. The seaweed is placed in a bucket with 4 liters of water and 300 grams of dissolved salt. What will occur when the system reaches equilibrium?
The seaweed will absorb 1.0 liters of water.
The seaweed will absorb 40 grams of salt.
The seaweed will lose 0.5 liters of water.
The seaweed will absorb 5.5 liters of water.
Answer:
The seaweed must lose
0.5 L
of water in order for equilibrium to be established.
Is the animal cell unicellular or multicellular.
Answer:
Most of them are unseen, visible only under a microscope. These tiny organisms are unicellular, composed of only a single cell. The familiar plants, animals and fungi that we can see represent only a tiny fraction of life on Earth. These organisms, being made of more than one cell, are called multicellular.
Explanation:
Which one of these is an example of a biome?
oak tree
ocean water
a mountain range
desert
Answer:
Desert
Explanation:
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What is the complementary DNA strand TAC GGC CGT TAT
Answer:
1a. The template DNA strand, from which the mRNA is synthesized, is 5’ CAAACTACCCTGGGTTGCCAT 3’
(RNA synthesis proceeds in a 5’ à 3’ direction, so the template strand and the mRNA will be complementary to each other)
b. The coding DNA strand, which is complementary to the template strand, is 5’ ATGGCAACCCAGGGTAGTTTG 3’
c. The sequence of the mRNA is 5’ AUGGCAACCCAGGGUAGUUUG 3’
(the sequence of the mRNA is complementary to the template strand and identical to the coding strand with U substituted for T)
d. The third codon is 5’ ACC 3’. Therefore, the corresponding anti-codon is 5’ GGU 3’
2. Which of these is not an ecological pyramid?
A. Pyramid of Energy
B. Pyramid of Biomass
C. Pyramid of Numbers
D. Pyramid of Species
Answer:
A. pyramid of energy
Explanation:
because yea