Answer:
Trophic level 1 - Primary producers
Explanation:
Biomass is basically energy, and the most energy lies in the primary producers.
Sister chromatids separate during _____.
A. prophase
B. telophase
C. metaphase
D. anaphase
Answer:
D. anaphase
Explanation:
1. Which of the following are components of all cardiovascular systems? Select the THREE answers that are correct.
a series of tubes
an organ for gas exchange
a circulating fluid
a cavity for nutrient and gas exchange
a pump
2. Why do larger animals have closed circulatory systems?
Closed circulatory systems feature a smaller network of blood vessels than open circulatory systems, which allows for more targeted delivery of oxygen and nutrients to cells
Closed circulatory systems do not have chambers in the heart, which lessens complexity in the system and increases efficiency in oxygen and nutrient delivery.
Closed circulatory systems are less complex than open circulatory systems such that oxygen and nutrients are delivered to cells more quickly.
Closed circulatory systems allow for mixing of blood with other bodily fluids, which increases the rate at which oxygen and nutrients are carried to cells.
• Closed circulatory systems deliver oxygen and nutrients to cells and carbon dioxide and waste from cells more efficiently than open circulatory systems.
Answer:
for no.1
✓a circulating fluid
✓a pump
✓cavity for nutrient and gas exchange
for no.2
Closed circulatory systems allow for mixing of blood with other bodily fluids, which increases the rate at which oxygen and nutrients are carried to cells.
According to the table, which of these triplets contains a change to GCA that
is a missense mutation?
A. GAA
B. GCG
C. GCC
D. GCU
SUBMIT
PREVIOUS
Answer:
i think it d
Explanation:
Answer:
gaa
Explanation:
LABEL THE DIAGRAM OF THE LEAF
Answer: i hope it will help
Explanation:
use this image to solve it and if you find any difficulties let me know
what is respiration
Respiration is a metabolic process common to all living things. Here, you will learn the definition, location, processes, and formula for cellular respiration. At the end, you can test your knowledge with a short quiz.
What is Respiration?
When you hear the word 'respire,' you probably think of breathing. When you breathe, you are taking in oxygen with each inhale and releasing carbon dioxide with each exhale. This gas exchange is important for respiration, but while breathing is a physical process, respiration can be thought of as more of a chemical process. All organisms, from a single bacterial cell to a coral reef colony to a blue whale, undergo respiration.
Food molecules absorbed after digestion are taken in, broken down, and the energy freed in the process is used to power the organism's movements and physiological functioning. Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells).
When we examine the equation for cellular respiration, we see that the reactants are glucose and oxygen (for aerobic respiration), and the products are carbon dioxide, water, and ATP. Note the number of oxygen, carbon dioxide, and water molecules involved in each 'turn' of the process.
respiration formula
Balance with Photosynthesis
Respiration is the antithesis to the process of photosynthesis, in which carbon dioxide and water are taken in by autotrophs, along with sunlight, to make glucose and oxygen. Autotrophs include any photosynthesizing organisms, such as plants and algae, all of whom also undergo respiration. The products of photosynthesis are taken in by heterotrophs, organisms who cannot make their own energy and rely upon autotrophs for food. The byproducts of their respiration - carbon dioxide and water - are then used for photosynthesis. In a balanced ecosystem, this exchange is an example of a negative feedback loop.
The balance of photosynthesis (green) and respiration (red)
photosynthesis, respiration
Three Phases of Respiration
In prokaryotic cells, respiration takes place in the cytosol and across the cell plasma membrane. In eukaryotic cells, it occurs in the cytosol and in the mitochondria. Mitochondria are the powerhouses of eukaryotic cells, and contain high surface areas of membrane folds on which respiration activity can be maximized.
what are the two product of the krebs cycle
Answer:
Explanation:
For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced. Each glucose molecule produces two molecules of acetyl CoA, enough for two cycles.
Answer:
[tex]\boxed {\boxed {\sf 2 \ ATP, 10 \ NADH, \ 2 \ FADH_2, \ 4/6\ CO_2 }}[/tex]
Explanation:
The Krebs Cycle is one part of cellular respiration, the process that makes energy/ATP for an organism.
In glycolysis, pyruvic acid is made. After, the molecules are changed to acetyl-CoA.
In the Krebs Cycle, oxaloacetic acid combined with acetyl-CoA form citric acid. Enzymes cause reactions, the NAD molecule gains a hydrogen ion (becomes NADH), and FAD also gains hydrogen ions (becomes FADH₂).
Energy is released, so some ATP can be made. Carbon atoms are released as carbon dioxide (exhaled as a waste product).
So, the Krebs Cycle actually has more than 2 products.
For every 2 pyruvic acid:
2 ATP: energy10 NADH: electron carriers in the electron transport chain2 FADH₂: also electron carrier4 CO₂ (Krebs Cycle) + 2CO₂ (converting pyruvic acid): waste gasThe ABO blood type in humans
Answer:
ABO blood group system, the classification of human blood based on the inherited properties of red blood cells (erythrocytes) as determined by the presence or absence of the antigens A and B, which are carried on the surface of the red cells. Persons may thus have type A, type B, type O, or type AB blood.
Explanation:
The process of DNA replication occurs just before
Answer:
Explanation:
the process of DNA replication occurs just before the cell division i.e. mitosis. DNA synthesis happens in S-phase i.e. synthesis phase of interphase where cell division preparation happens.
Felicia observed that the lettuce plants in her garden had wilted after several days of drought. The
next day, there was a downpour of rain, and the leaves began to swell. What cellular process caused
this effect in the lettuce plants?
Answer:
Due to the chought water was released from the plant which caused the plant to shrink or wilt.
Explanation:
Roots take water from the environment through osmosis. This is the diffusion of water molecules from a less concentrated solution to a more concentrated one. Osmotic process caused this effect in the lettuce plants.
---------------------------------------------------------
Osmosis is the phenomenon that occurs when two dilutions of different concentrations are separated by a semipermeable membrane.
The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.
Water goes from the most diluted solution to the cell interior until concentrations are equal on both sides. At this point, the cell and the solution are in dynamic equilibrium.
As water enters, the cell begins to enlarge and becomes bigger-sized. It acquires turgidity.
Under natural conditions, the organism regulates the extracellular fluids to avoid cells swelling until they burst.
In the exposed example, the lettuce plants had lost water due to several days of drought. They were dehydrated.
Immediately after the downpour of rain, the plant cells acted as the more concentrated solution, separated by their membrane with a less concentrated solution.
Water molecules moved toward the most concentrated side, the interior of the cell.
Roots took water from the soil by osmotic process and drove it to the different plant tissues, rehydrating the cells.
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Which learning process occurs when organisms are able to distinguish between various similar stimuli and respond only to certain ones?
A.
acquisition
B.
discrimination
C.
extinction
D.
generalization
Answer:
b
Explanation:
The learning that process occurs when organisms are able to distinguish between various similar stimuli and respond only to certain ones is discrimination. The correct option is B.
What is stimulus?A stimulus is defined as anything that can cause a physical or behavioral change. Stimuli is the plural of stimulus.
External or internal stimuli can be used. Your body's response to medicine is an example of external stimuli. Internal stimuli include changes in vital signs caused by changes in the body.
Stimulus generalization occurs when a similar stimulus to an already-conditioned stimulus begins to elicit the same response as the original stimulus.
Stimulus discrimination occurs when an organism learns to distinguish the CS from other similar stimuli.
The process by which an organism learns to respond differently to similar stimuli is known as stimulus discrimination.
According to classical conditioning, the organism only exhibits the conditioned response in response to the conditioned stimulus.
Thus, the correct option is B.
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could Marcie have found a mineral? explaim why or why not
Answer:
yes
Explanation:
a retail bank just launched a new credit card.what will be embedded in the card for improved security?
Answer: a chip that protects it's owner from being scammed
Explanation:
What would happen to the concentrations of Pyruvate, NADH and intermembrane H+ if the ETC stopped working?
Answer:
"Proton decreases" would be the right approach.
Explanation:
The Kreb cycle or system plays a key role throughout a matrix of mitochondria. 3 NADH, 2 FADH2 as well as 1 ATP are synthesized. Whenever the Kreb process has been halted, the acetyl CoA throughout the Kreb cycle has not been used. Pyruvate doesn't at all, disintegrate via acetyl CoA. Therefore in cells, pyruvate accumulates. Unless the Kreb loop is halted, therefore the concentration of NADH and FADH2 declines.Thus, they aren't used for the transportation chain of electrons. This is also why protons have not been discovered to be injected towards intermembrane space.
Timed! Which statement best describes the two methods of reproduction (30 points!) (picture included)
Answer: C
Explanation: Asexual: The cells split, but its still the exact same as the first cell it started with.
Sexual: Traits different from mother cell(S)
Which factor is used to determine a hurricane’s rating on the Saffir-Simpson Hurricane Scale?
A)
storm surge potential
B)
duration
C)
expected cost of property destruction
D)
wind speed
E)
total rainfall
Answer:
D
Explanation:
edgde 2021
Which is an example of incomplete dominance?
A. A red flower and a yellow flower mating to produce an orange
flower.
B. A red flower and a yellow flower mating to produce a yellow
flower.
C. A red flower and a yellow flower mating to produce a red flower.
D. Two orange flowers mating to produce an orange flower.
Answer:
i think the answer is B
Explanation:
Answer:
B
Explanation:
Nicole made the following chart to help her study for a test on the geographic features of the ocean: *
A. abyssal plain
B. continental shelf
C. continental slope
D. continental rise
If the offspring of the cross showed incomplete dominance, what would the color of the offspring be?
Answer: green
Explanation:got it on edge 2021
Where can tactile receptors be found in the human body? (mark ALL answers that are correct)
the brain
the skin
the liver
the lungs
the arteries
Answer:
the liver
Explanation:
type of potential energy stored in bonds between atoms
A. Autotroph
B.potential energy
C. Stroma
D. Calvin cycle
E. Heterotroph
F. Light reactions
G. Chemical energy
H. Chlorophyll
convection _______.
1.occurs in fluids
2. requires physical contact between molecules
3.occurs in solids
4. is the method of heat transfer used by the Sun
Answer:
The answer is 1: Occurs in fluids.
Explanation:
Convection happens when a lot of heat in fluids/gas move and/or take the place of particles with less heat.
Answer:
1. occurs in fluids
Explanation:
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
What are the raw materials of Cellular Respiration?
Answer:
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Explanation:
When does self-pollination occur?
When plants have both male and female structures
When inheritable traits are identified
During mitosis
Only when bees are present
Answer:
Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
DNA damage can occur as a result of exposure to chemicals or ultraviolet radiation. What happens during nucleotide excision repair of damaged DNA? A. Enzymes delete an incorrect DNA sequence, pull the gap closed, and join the bases on either side of the gap together B. Enzymes cut out the damaged gene, copy the same gene from the homologous chromosome, and insert the copy C. Enzymes detect an incorrect DNA base pairing in a DNA strand, remove the incorrect base, and insert the correct base. D. Enzymes open the DNA strand, remove a segment of DNA from the strand that contains the damage, and resynthesize the correct DNA sequence.
Answer:
D. Enzymes open the DNA strand, remove a segment of DNA from the strand that contains the damage, and resynthesize the correct DNA sequence.
Explanation:
From time to time, the DNA gets exposed to certain chemicals or radiation that damages it. However, the cell has a DNA repair mechanism in place called NUCLEOTIDE EXCISION REPAIR (NER).
NUCLEOTIDE EXCISION REPAIR (NER) is one of the DNA repair mechanisms in which certain enzymes open the DNA strand, remove a segment of DNA that contains the damaged gene or nucleotide bases, and resynthesize the correct DNA sequence using the pair of the damaged one.
An experiment is a procedure that test a hypothesis by providing data and observations under controlled conditions is this true or false
Answer:
true
Explanation:
By experimentating your testing a theory or hypothesis based on certain criteria to see if your theory is correct. By experimentating you record data to back up your claims.
The theory or hypothesis is just your guess of what may or may not happen based on the criteria your wanting to prove.
Will give brainlest and heart if correct
Answer:
B
Explanation:
Have a feeling im a wrong sorry i just believe its B
Griffith found that this combination of Streptococcus pneumoniae strains was highly severe.
Live R strain + Heat-killed S strain
Live T strain + Live S strain
Heat-killed R strain + Live S strain
Heat-killed R strain + Live R strain
Answer:
Live R strain + Heat-killed S strain
Explanation:
The R strain, in its live version, was nonvirulent. The ordinarily virulent S strain, when killed by heat and injected into the mice, became nonvirulent. However, when the mice were injected with both the nonvirulent R strain and the heat-killed S strain, the mice died.
Griffith found in his experiment that the following strain combination of Streptococcus pneumoniae strains was highly severe.
Live R strain + Heat-killed S
What was Griffiths experiment?Frederick Griffith performed one of the first tests to demonstrate that cells contain genetic material in 1928.Griffith's experiment used two pneumococcus strains: a deadly virulent strain (S) and a non-virulent strain (N) (R)Griffith infected mice with a non-virulent strain of bacteria (strain R) and found that they survived.Griffith used the pathogenic bacteria (strain S) to infect mice, and the mice died.Griffith infected mice with deadly bacteria (strain R) that had been heat-killed, and the mice survived because the bacterium had been killed.Griffith discovered that mice infected with a mix of heat-killed strain S and live strain R died.
Griffiths deduced from this that the live R cells had been converted into pathogenic S cells.
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How are the starting reactants and the products of photosynthesis and cellular
respiration related?
Answer:
photosynthesis converts carbon dioxide and water into oxygen and glucose
Explanation:
cellular respiration coverts oxygen and glucose into water and carbon dioxide
What correctly differentiates between the structure and function of Organelle B
A. This organelle is composed of two membranes, it is the site of photosynthesis
B. This organelle contains mostly water and nutrients which aid in the rigidity of the cell
C. This organelle contains chromosomes and proteins, it directs cell activities and stored genetic information
D. This organelle is composed of two membranes,reactions inside it release energy that can be used for cell processes
Answer:
D. This organelle is composed of two membranes,reactions inside it release energy that can be used for cell processes
Explanation:
The image attached to this question represents a CELL, which consists of structures that performs specific functions called ORGANELLES. The organelle labelled B in particular is called a MITOCHONDRION. A mitochondrion is a double-membraned organelle i.e. it structurally has two membranes.
The mitochondrion is functionally the organelle where cellular respiration, which involves the synthesis of energy for the cell's metabolic activities, takes place. Hence, the statement that correctly differentiates between the structure and function of organelle B is: This organelle is composed of two membranes,reactions inside it release energy that can be used for cell processes
Why perform multiple tests in order to identify an unknown bacterium, instead of a single biochemical test
Answer:
There is no specific test available for a perticular or any individual bacterium to be identified. A prticular test can only narrow down the choices on the basis of characteristic each test excludes or includes.
Most of the time, to identify a particular bacterium atleast 3 to 4 tests are required. Each test can give postive result to be positive for a new group of bacteria.