Answer:
Lentic is a class of aquatic ecosystems that are found on land, such as:
ponds
rivers
lakes
swamps
streams
Mostly, lentic ecosystems are described as still bodies of freshwater, and they are smaller ecosystems. Some lentic ecosystems contain animals and microorganisms, but they mostly rely on the photosynthesis of algae and underwater plants to produce energy to thrive. One of the requirements of a lentic body of water is that it is exposed to the sun to encourage photosynthesis.
Explanation:
A lentic ecosystem entails a body of standing water, ranging from ditches, seeps, ponds, seasonal pools, basin marshes and lakes. Deeper waters, such as lakes, may have layers of ecosystems, influenced by light. Ponds, due to their having more light penetration, are able to support a diverse range of water plants.
You are standing by a cliff far away from the ocean. You see a sedimentary layer
with shells in it. You are told the shells are from oceanic organisms. How do you
think this layer formed?
Best answer gets brainliest!
Answer:
oldest layer on the bottom and newest on the top
Explanation:
Cell division occurs in two stages: division of the nucleus, called
Choose...
, and division of the cytoplasm, called
Choose...
.
Answer:
mitosis, cytokinesis
Explanation:
Cell division occurs in two stages: the division of the nucleus, called karyokinesis, and the division of the cytoplasm, called cytokinesis, and both of these include cell division and form two cells from one.
What is the significance of karyokinesis?There are many steps in cell division, two of which are important, the first is the division of the nucleus, known as karyokinesis, which is the process of nuclear division that includes replication of the genetic material and separation of the duplicated chromosomes and is important for the production of genetically identical daughter cells for growth and repair in multicellular organisms. The single cell is divided into two cells after cytokinesis, which occurs at the end of cell division.
Hence, cell division occurs in two stages: the division of the nucleus, called karyokinesis, and the division of the cytoplasm, called cytokinesis, and both of these include cell division and form two cells from one.
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Water pressure
A. is less than air pressure for the same volume of air
B. decreases with depth
C. is about twice as much on a diver at 10m as at the surface
D. is unaffected by atmospheric pressure
Answer:
lAnnswer letter A.
is less than air pressure to the same volume of air
How does cellular respiration demonstrate
the conservation of mass?
Cellular respiration is the process by which cells obtain energy from glucose. It can be represented by a chemical reaction which, when balanced, obeys the Law of Conservation of Matter:
C6H1206 + 6O2 ---- 6CO2 + 6H2O
Th number of atoms of reactants equals the number of atoms of products:
six carbon atoms, 12 hydrogen atoms, 18 oxygen atoms
No atoms are created or destroyed in this process, they're just rearranged into different molecules.
We often hear the term "burn" to describe glucose being used by living things for energy. When a substance burns, matter is conserved. It might seem like the burned substance is completely consumed because the products, CO2 and water, are both produced in the gaseous form and are colorless and invisible. The French chemist Antoine Lavoisier was the first to show that mass is conserved in chemical reactions by carrying out combustion reactions in a closed system and capturing the gaseous products.
Cells use cellular respiration to convert glucose into energy for cellular function. A chemical process that, when balanced, complies with the Law of Conservation of Matter might serve as a metaphor for it:
6CO2 + 6H2O = C6H1206 + 6O2
What is cellular respiration?
Cellular respiration converts glucose into ATP, which powers various physiological functions. Cellular respiration involves glycolysis, the citric acid cycle, and oxidative phosphorylation.
Glucose fuels cellular respiration. A balanced chemical reaction represents it:
6CO2 + 6H2O = C6H1206 + 6O2
Reactants and products have equivalent atom counts.
This technique rearranges atoms into molecules without creating or destroying them. Living creatures "burn" glucose for energy. Burning conserves matter. Because CO2 and water are gaseous, colourless, and invisible, it may seem that the burnt material is totally consumed. Antoine Lavoisier was the first to demonstrate mass conservation in chemical reactions by conducting combustion processes in a closed system and catching the gaseous products.
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Hi, can somebody please explain this activity to me and what do I do for the graph here? Thanks.
the most common mineral group contains what minerals
Answer:
Explanation:
The most mineral group contains potassium but it can also contain calcium and magnesium
which organelle moves things around in the cell?
Answer:
The Endoplasmic Reticulum also known as E.R. is an extensive system of many membranes that move proteins and other substances through the cell. The E.R. with attached ribosomes is called an: Rough E.R.
Hopefully, this answers your question. Your welcome and Have a nice day. :)
can someone please help me with biology?
6) Complete the illustration below by filling in with numbers 2 to 6 respectively.
______Ultraviolet radiation, lightning, and lack of oxygen create organic molecules (proteins and DNA) from inorganic molecules.
______Mutation enables cell to perform photosynthesis. Oxygen enters the atmosphere and protocells die off.
______Protocell is formed with borders like cell membranes.
______Heterotrophic prokaryotic cell is formed.
______Primordial seas
Answer:3,6,4,5,2
Explanation:
Which statement identifies an example of a genetic factor that could influence the growth or development of an organism created by an environmental factor? the lack of available sunlight for a small sapling to grow an increased amount of rain causing flooding in a local river fertilizer creating a mutation among a farmer's crops overcrowding of a local deer population resulting in fewer resources available
Answer:
fertilizer creating a mutation among a farmer's crops
Explanation:
A genetic factor is one that affects the gene or genome of an individual organism. This genetic factor often influences the observable trait called PHENOTYPE of the organism. In this case, an example of a genetic factor that could influence the growth or development of an organism created by an environmental factor is the "fertilizer creating a mutation among a farmer's crops"
The fertilizer represents the environmental/chemical factor which is creating the genetic factor (mutation) that will eventually influence the growth or development of the crops.
A cell is to a board game as ____________ is to the rule book.
people can obtain groundwater by drilling a well A. above the water table B. into an aquifer C. into the unsaturated zone D. into the impermeable.
Answer:
B. into an aquifer
Explanation:
People can obtain groundwater by drilling a well into an aquifer.
An aquifer is a porous and permeable formation where groundwater can be found.
Aquifer is usually found below the water table. In this regard, the pore spaces of this layer of the earth allows for the storage of ground water. When the aquifer is punctured, groundwater can be abstracted.Answer:
b. into an aquifer
Explanation:
What is the structure that makes up every living thing?
Answer:
Cells are the structure that makes up every living thing.
Explanation:
La miopia es un caracter bastante comun en la especie humana. Un matrimonio en el que ambos conyugues poseen vision normal, tienen dos hijos, uni con una vision normal y el otro con miopia. Teniendi en cuenta el fenotipo de todos los miembros de la familia ¿quenpodrias deducir del gen que controla la miopia? ¿ que genotipo podrias asignsr a cada individuo?
Answer:
El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm Tendrían otro hijo homocigota recesivo con miopia, mm.Explanation:
Datos disponibles:
Ambos padres poseen visión normalUno de los hijos tiene visión normalEl otro hijo tiene miopiaPodríamos establecer que M es el alelo dominante, mientras que m es el alelo recesivo.
A partir de la información brindada, podríamos suponer que:
Opción 1:
La miopia es un caracter expresado por un gen dominante. Si este fuera el caso, entonces al menos uno de los padres debería tener miopia para poder heredarle al hijo el alelo dominante para expresar el caracter. Si este fuera el caso, los posibles genotipos de los padres serían:
Parental) Mm x mm (al menos uno de los padres con miopia)
F1) 1/2 Mm (Hijo miope)
1/2 mm (Hijo con visión normal)
Pero en este caso, los dos padres tienen visión normal, entonces si el gen dominante expresa la miopia, los genotipos de los padres serian homocigotas recesivos, mm. Si ambos padres son homocigotas recesivos, no podrían heredarle a ningun hijo el alelo de la miopia. En este caso, la cruza sería:
Parental) mm x mm
F1) 100% mm (todos los hijos con visión normal)
Sin embargo, para el ejemplo planteado, los dos padres tienen visión normal, uno de los hijos tiene visión normal y el otro tiene miopia, lo que nos conduce a la segunda opción.
Opción 2:
La miopia es un caracter heredado por un gen recesivo, m. Mientras que la visión normal es heredada por un gen dominante, M. Entonces, si este fuera el caso, para que ambos padres con visión normal, tengan un hijo homocigota recesivo para el caracter, entonces ambos padres deberian ser heterocigotos. Su hijo miope heredaría un alelo recesivo de cada padre y expresaría el defecto. El genotipo de las personas con miopía sería entonces homocigota recesivo. Esta cruza sería de la siguiente manera:
Parental) Mm x Mm (Ambos padres heterocigotas)
Gametos) M m M m
Cuadro de Punnet)
M m
M MM Mm
m Mm mm
F1) 3/4 o 75% de probabilidad de tener un hijo con visión normal
1/4 o 25% de probabilidades de tener un hijo miope.
Entonces, podemos concluir que:
El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm Tendrían otro hijo homocigota recesivo con miopia, mm.help me with this please
Answer:
I WILL HELP YOU........
What is a negative feedback loop?
a closed path that tends to reduce the activity of a body system
the output of a system stimulates another cycle of the system
anything that causes a reaction or response
something that carries out a response
Answer:
I hope this helps.
Explanation:
Which group makes up the largest level of an energy pyramid?
A. omnivores
B. carnivores
c. producers
D.consumers
Answer: A
Explanation:
how is the phloem in a leaf related to the roots of the plant?
a. cells that contain sugar move between the leaf and roots within the phloem. 
b. chloroplasts that make sugar move through phloem cells to the roots. 
c. water in the phloem cells comes to the leaf from the roots. 
d. sugar made in the leaf is carried to the roots by cells in the phloem.
Answer:
The phloem carries important sugars, organic compounds, and minerals around a plant. Sap within the phloem simply travels by diffusion between cells and works its way from leaves down to the roots with help from gravity. The phloem is made from cells called 'sieve-tube members' and 'companion cells'.
Answer: Leaves
Explanation: online school
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Marcus is hanging a porch swing on his front porch. The first thing he has to do is attach two springs to the ceiling. Then, he fastens the
swing to the springs so that they can stretch and support the weight of the swing. Which two types of potential energy do the springs have?
A. elastic
B. gravitational
C. kinetic
D. stretched
The two types of potential energy that the springs have when Marcus hangs the porch swing on his front porch are (A)elastic potential energy and (B)gravitational potential energy.
The elastic potential energy is stored in the springs due to their deformation from their natural state. The gravitational potential energy is stored in the swing due to its height above the ground, which is determined by the position of the springs.
When Marcus attaches the springs to the ceiling, the springs are stretched and deformed from their natural state. As a result, they store elastic potential energy. This energy is proportional to the amount of deformation, which in turn is proportional to the weight of the swing and the distance the springs are stretched.
When Marcus fastens the swing to the springs, the gravitational potential energy of the swing is determined by its height above the ground. The higher the swing is from the ground, the greater its gravitational potential energy. The swing's height is determined by the length of the springs and their position relative to the ceiling
Therefore, the correct answers are A. elastic potential energy and B. gravitational potential energy.
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Inside a non-dividing nucleus, you will see a mass of tangled DNA and protein called
Answer:
Chromatin
Explanation:
Chromatin means "chroma" in Greek. It can be found in eukaryotic cells with non-dividing nucleus. They make up the chromosomes of cells during cell division. The fibers of chromatin consists of DNA (deoxyribonucleic acid) and proteins (histones and non-histones).
It is said that chromatins got their name owing to their bright colors when mixed with dye. This was found by scientists who inspected it under a microscope.
Can someone help me figure this out please?
You need to make 3 pies, one for NaCl, one for C6H12O6, and one for NaOH.
NaCl has two elements, Na (sodium) and Cl (chlorine).
C6H12O6 has three different elements, carbon (C), hydrogen (H), and oxygen (O).
NaOH has three elements, Na (sodium), O (oxygen), and H (hydrogen).
After she has viewed the cells, she wants to produce a scientific drawing of them.
Her teacher has told her to use smooth lines to draw the structures she can see.
Give two other ways in which she can make sure she produces an accurate and useful drawing.
After she has viewed the cells, she wants to produce a scientific drawing of them.The other ways in which she can make sure she produces an accurate and useful drawing is make a large clear drawing, include magnification used, use a ruler, when labeling write horizontally forming a vertical list.
What is scientific experiment?An experiment has been defined as process that is designed to diagnose the hypothesis which has the portion of the scientific method or procedure.
Scientific experiment has done by testing the particular medicine on an animal and by observing the impact of medicine on the animal as well as the reaction of the animal.
There are mainly three types of scientific experiments and these are the experimental which has been consist of the major level of scientific experimentation. The second type has been known as Quasi- experimental and third type has been known non- experimental study or research.
Therefore, After she has viewed the cells, she wants to produce a scientific drawing of them.The other ways in which she can make sure she produces an accurate and useful drawing is make a large clear drawing, include magnification used, use a ruler, when labeling write horizontally forming a vertical list.
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When two plates slide past each other, what kind of plate boundary is
that?
A.Convergent
B.Divergent
C.Transform
Answer:
C. Transform
Explanation:
A transform plate boundary occurs when two plates slide past each other.
When writing DNA, you may only write what 4 bases?
Answer:
A's T's C's and G's
Explanation:
Adenine, Thymine, Cytosine, and Guanine
Some fish that live in pitch-dark caves have things that look like eyes but do not see.
Are their eyes best described as an exaptation or a vestigial adaptation?
Answer:
It is adaptation
Explanation:
I had this question on my test last week
why is it important to ask questions
Answer:
It helps you uncover the challenges you're facing and generate better solutions to solve those problems. We're all spending too much time and energy solving the first iteration of a challenge with the first idea we have. That's both limiting and counterproductive.
Explanation:
Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure
water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis?
a. water molecules move out of the cells
b. water molecules move into the cells.
c. salt ions move out of the cells.
d. salt ions move into the cells.
Answer:c salt ions move out of the cell
Explanation:
Salt is less than 1
Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. This results into water molecules . Thus, the correct option is C.
What is Osmosis?Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane from a region of high water potential or lower solute concentration to a region of low water potential or higher solute concentration, in the direction which tends to equalize the solute concentrations on the two sides of the membrane.
It is of two types, on the basis of movement of solvent particles, when the solvent moves inside the cell it is called endosmosis which results into turgid cells and the movement of solvent molecules outside the cell which is called exosmosis that results into flaccid cells.
Therefore, the correct option is C.
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Chloroplasts and Mitochondria reproduce independently from the eukaryotic cell it is within.
True or false?
The cell structure at the arrow in the picture below is present in these cells which line the airways, but are NOT present in bacteria. What is the cell structure at the arrow?
Answer:
The cell membrane
Explanation:
The arrow is pointing to the outside ¨shell¨ so to speak which is the cell membrane, bacteria do not have cell membranes
30 points, please answer question in picture :) i need help
Answer:
the answer is A
Explanation:
because 6 is where it reaches the highest point
If a DNA strand has 23 % guanine before semi conservative replication occurs, what percent Thymine will each new strand have after replication?
Answer:
27%
Explanation:
DNA is a linear molecule composed of four nucleotide bases: adenine (A), cytosine (C), guanine (G), and thymine (T). Chargaff's rules state that adenine (A) always pairs with thymine (T), while guanine (G) always pairs with cytosine(C). In consequence, the amount of G should be equal to the content of C, while the amount of T should be equal to the content of A. In this case, the content of G is 23% and the content of C is also 23%, so the remaining content (A + T) is equal to 54% [100 - (23 + 23) = 54%], thereby content of A is equal to 27% and the content of T is also 27% (27 + 27 = 54%).