Answer:
Veins
Explanation:
Blood moves through many tubes called arteries and veins, which together are called blood vessels. The blood vessels that carry blood away from the heart are called arteries. The ones that carry blood back to the heart are called veins.
alkali metals are listed in the first column of the periodic table. this tells you that
a they are highly reactive
b they have only one electron in their outer orbital shells.
c their nuclei contain only one neutron
d both a and b
Answer:
B. they have only one electron in their outer orbital shells
B. What structures are missing from the root hair cells?
Answer:
The function of root hairs is to collect water and mineral nutrients that are present in the soil and take this solution up through the roots to the rest of the plant. As root hair cells do not carry out photosynthesis, they do not contain chloroplasts.
Explanation:
Mitochondria are missing from root hair cells.
Root hair cells are specialized plant cells found in the roots of plants. Their primary function is to absorb water and minerals from the soil. To achieve efficient absorption, root hair cells have evolved specific structural adaptations.
Root hair cells are elongated and have a large surface area due to their elongated projections called root hairs. This increased surface area enhances their ability to come into contact with the soil, maximizing water and nutrient absorption. However, due to their focus on absorption and their short lifespan, root hair cells exhibit some structural simplifications, such as the absence of certain organelles.
One notable organelle missing from root hair cells is the mitochondria. Mitochondria are the "powerhouses" of cells, responsible for generating energy in the form of ATP through cellular respiration. Since root hair cells are mainly involved in absorption rather than energy production, they have a reduced need for extensive energy generation. As a result, they don't require as many mitochondria as other cells that are highly metabolically active.
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What do all living organisms have in common?A.They all reproduce asexually.B.They all perform photosynthesis.C.They all release oxygen into the Earth's atmosphere.D.They are all made of one or more cells.
Answer:
D
Explanation:
Only some organisms reproduce asexually, only plants perform photosynthesis, and most creatures consume oxygen and release carbon dioxide. D is the correct answer both by process of elimination and because the simplest life form is the single celled organism, which still has one cell. All complex life is made out of many many many cells.
most glands in the human body are a part of which system?
Answer: The endocrine system is a network of glands in your body that make the hormones that help cells talk to each other. They're responsible for almost every cell, organ, and function in your body.
a population characteristic, such as a population mean, is called
Answer:
Parameter
Explanation:
Every Characteristic a population has is called a Parameter
Construct an explanation for that carbon hydrates are considered as a source of energy for the human body. Justify your answer with an evidence with your own words.
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Explanation: Carbohydrates are mainly composed of Oxygen, Carbon and Hydrogen. the most popular carbohydrate that is compatible with the human body is glucose which is the final result of every Carb we take in. a glucose molecule has 6 carbon atoms. during glycolysis, a single glucose molecule is broken down into two pyruvate molecules. in there, the first couple of ATP is synthesized. at later steps of the cycle, more ATP molecules are reduced.
what biome receives a lot of rain, moderate temperatures and a long growing season
What differences are there between heartwood and sapwood?
Answer:
Heartwood Sapwood
1 Cells are comparatively older. Cells are comparatively younger.
2 Also called as ‘Duramen’ Also called as ‘Alburnum’
3 Heartwood is dark colured Sapwood is light coloured.
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Adjust the length. How does the length of a pendulum affect its period?
Answer:
The longer the length of string, the farther the pendulum falls and therefore, the longer the period
Explanation:
A dietician asks a patient about the food that the patient eats and makes the table below to summarize the results.MacromoleculeSuggested percentage of dietActual percentage of dietCarbohydrates45–65%70%Lipids20–35%5%Proteins10–35%25%Based on the table, what advice do you think that the dietician will give the patient?The patient should increase the amount of lean meats (proteins) and decrease the amount of oils in his or her diet.The patient should decrease the amount of lean meats (proteins) and increase the amount of oils in his or her diet.The patient should decrease the amount of rice and pasta and increase the amount of oils in his or her diet.The patient should decrease the amount of rice and pasta and increase the amount of lean meats (proteins) in his or her diet.
Explanation:
The patients to decrease lean meat and increase
The patient should increase the amount of lean meats (proteins) and decrease the amount of oils in his or her diet. Therefore, option "A" is correct.
What are macromolecules?Monomers are long chains of molecular subunits that comprise macromolecules, essentially polymers. Long polymers are present in proteins, carbohydrates, and nucleic acids. They are called macromolecules because of their large size and polymeric nature.
Macromolecules are able to speed up biochemical reactions, store and retrieve genetic information, provide structural support, and store fuel. The biological macromolecule is carbohydrates, lipids, proteins, and nucleic acids is an essential component of the cell.
Therefore, macromolecules are important for body function.
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what would happen to a signaling pathway if phosphatases had reduced levels of function?
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Which item is NOT part of an effort to reduce health care workers exposure to hazardous chemicals?
A: protective storage
B: sterilization agents
C: pre-measured doses
D: needleless administration
Answer:
D: needleless administration
Explanation:
Answer: sterilization agents
Explanation:
Just the assignment
4. Which structure is not unique to plant cells?
Answer:
The plant cell has a plant wall Chloroplast.
Explanation:
this is not found in animal cells.
Answer:
lysomes or centrosomes
Poly sheets with ultraviolet light inhibitors last 10 to 12 years before they need
to be replaced
Answer:
Plastic is mostly decomposed by UV radiation, and it takes two years to more than 1 million years to decompose it. While many pure plastics cannot absorb UV radiation, the presence of catalyst residues and other impurities will often act as receptors
Explanation:
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Decomposers play an important role in the carbon cycle.
True
False
Answer:
true
decomposers break down organisms and return the carbon in their bodies to the atmosphere.
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2. A volcano erupts 40 miles from an owl’s ecosystem. Ash from the eruption blocks sunlight over your ecosystem for several (7-10) months.
a. Explain what happens within the food web in the weeks that follow the eruption.
b. The ash clears and several more months go by. What do you think will happen to your ecosystem?
Answer:
a. Sunlight cannot penetrate through the ash clouds. thus photosynthesize won't occur. so the food chain will begin to collapse from the producer and primary consumer. owls will be out thinking that it's night. they will catch fish resulting in an imbalanced ecosystem. the aquatic population will decrease. then it's the doom days for owls. they will emigrate or will die.
b. the ecosystem will restore. that's how nature works.
The volcanic eruption destroyed the owl ecosystem because it prevented the sun's light from entering, so the food web of the ecosystem was destroyed because there was no food, and a new ecosystem will grow after many months.
What is the ecosystem?The ecosystem has both biotic and abiotic components, and there are many food chains and food webs present in the ecosystem, so the volcanic eruption harmed the ecosystem and killed the populations present, but after many months, when the ashes from the volcanic eruption are cleared, a new population will grow and a new community will be seen.
Hence, the volcanic eruption destroyed the owl ecosystem because it prevented the sun's light from entering, so the food web of the ecosystem was destroyed because there was no food, and a new community will grow after many months.
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Which of the following is required for the sodium-potassium pump to transport potassium ions into an animal cell?
High intracellular concentrations of potassium
High intracellular concentrations of sodium
Low intracellular concentrations of potassium
Energy from ATP
Answer: Energy from ATP
Explanation:
The size of the cell is related to its function True/false
TRUE
EXPLANATION:BECAUSE THE SIZE OF THE CELL IS RELATED TO ITS FUNCTION.
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Answer:
For example, the nerve cells are elongated in shape and are thin and dainty. ... An animal cell does not have a cell wall
Explanation:
The size and shape of a cell are related to its function and are governed by four factors—(1) surface-volume ratio, (2) nucleocytoplasmic ratio, (3) rate of cellular activity, (4) cell associations. (1) Surface-volume Ratio: ADVERTISEMENTS: The cell membrane separates the inner content from the outer environment.
what pathogen causes TMV
Answer:
The tobacco mosaic virus infects tobacco and lots of other closely related species like tomatoes and peppers. It is transmitted by contact between plants, either naturally or on the hands of farmers. It infects the chloroplasts of plant leaves and changes their colour from green to yellow or white in a mosaic pattern.
which structure mediates the attachment of spores to a surface on which to grow?
Answer:
holdfast
Explanation:
What is the function of bud scales?
Answer:
Bud scales act as protection for newly formed leaves and branch growth. They form at the end of the growing season once the leaves have fallen off the branches. Bud scales form in preparation for both new leaves and the extension of a stem's growth.
Please help me with this question! Right answers only!
Which is a characteristic of life that is only found in living things?
made of cells
made of cells
able to use energy
able to use energy
able to move
able to move
made of carbon compounds
Aquifers are ___ . A. Structures used to transport water from city to city
Answer:
Ground water
Explanation:
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In cell A, what structure is labeled X?
Answer:
Centrioles
În cell A, what structure is labeled X? Centrioles Which cell is in the “in between” phase of mitosis? D (Interphase, where the cell is being the cell it was created to be!) Place the diagrams in order from first to last.
Explanation:
where does the citric acid cycle take place in a eukaryotic cell?
Answer:
Within the mitochondrion
Explain:
the citric acid cycle occurs in the mitochondrial matrix, and oxidative metabolism occurs at the internal folded mitochondrial membranes
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The Correct choice is " a "
Many organisms eat at multiple trophic levels.
Answer:
The feeding relationships of organisms in the real world is almost always more complex than suggested by a food chain. For that reason, the term food web is more accurate than is food
chain.
Explanation:
hope its hepl
One of the carbohydrates is a building block of a plant's cell wall. It is
Answer:
hshdghdisuahzggdhxdhdnndnxhdj dhhdgdhdghdgdgehdyjebdjdhdydjshdjudydjdjdjxjxjdjdjdjdjdjdjdjdhdjdhydudueuhhcgduhxydjyduydjdhdyudjddhhdudusudidhdddfrdiiwousiisosooss
Answer:
cellulose is a building block of a plant cell wall
Explanation:
How do we REMOVE water vapor (a gas) from our atmosphere?
Answer:
to get the heat of the planet
Explanation:
the lipid bilayer that forms the core of all cell membranes is composed primarily of
Answer:
phosophlipids containing a phosophate and 2 fatty acid chains connected by a glycerol molecule.
Explanation:
Phosophlipids containing the phosophate and two fatty acid chains connected by a glycerol molecule.
What is lipid?
Lipid has been defined as an organic compound which has been unable to dissolve in the water. The example of lipids are oils, waxes, hormones, and fats. The main function of the lipid is to just maintain the structure as well as components of cell membranes, storage of site of energy, and important molecule of signaling that utilised in the process of signalling.
Full form of the RNA could be ribonucleic acid and it is a nucleic acid which has been found in almost all cells that are said to be living and RNA is mostly similar to the DNA but there is a difference between RNA as well as DNA and the difference is that the RNA is single stranded but DNA is double stranded or its structure.
The RNA's backbone has been made up of phosphate group that is arranged in alternating form and the sugar known as ribose other than the deoxyribose which is present in DNA. There are four bases found in the RNA and these are adenine, uracil, guanine, and cytosine.
Therefore, Phosophlipids containing the phosophate and two fatty acid chains connected by a glycerol molecule.
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