Answer:
Structure that contains DNA and regulates genes
Explanation:
To carry out these functions, cells contain various organelles, which are specialized structures that perform specific tasks within the cell. One of the most important organelles in the cell is the nucleus. The nucleus is the control center of the cell and is responsible for storing and processing genetic information.
If blood cells don't have a nucleus and don't reproduce, how do we get more blood?
What happens to the dead blood cells?
Answer:
Red blood cells are considered cells, but they lack a nucleus, DNA, and organelles like the endoplasmic reticulum or mitochondria. Red blood cells cannot divide or replicate like other bodily cells. They cannot independently synthesize proteins,The nucleus is the cell's brain which controls much of its functions. An animal cell or eukaryotic cell will therefore die without a nucleus. The cell would not know what to do without a nucleus and there would be no cell division. The synthesis of proteins will either stop or shape wrong proteins.When red cells die, hemoglobin is broken up: iron is salvaged, transported to the bone marrow by proteins called transferrins, and used again in the production of new red blood cells
Explanation:
What percentage of the offspring are expected to show the dominant phenotype from the
cross Tt x tt?
Answer:
vfyrdful.itrehsdtyukyxse
Explanation:
ukfyuiugfthy
Answer:
Tt jsjwisjsnanjqkqw aahwhza
Describe the
relationship
between rock
layers and an
intrusion from
igneous rock
Answer:
rock layers are the layers of the earth's crust. igneous rock is volcanic lava after it has hardened
Which is not a rule scientists use to
determine the relative age of rocks?
A fairly easy and uncomplicated method of determining relative age is the superposition of rock units. According to the rule, the oldest beds are at the bottom and the youngest ones are at the top of a succession of undeformed sedimentary rocks.
How did you establish the relative ages of the rock units using what principles?The lithology of a rock, the principle of inclusions, the principle of biological succession, the principle of superposition, the principle of original lateral continuity, and the principle of cross-cutting relationships are all utilized to establish a rock's relative age.
How is relative age calculated? What is relative age?By using relative dating, scientists cannot pinpoint a fossil's exact age, a rock, but examine a line of rocks to attempt to determine when an event took place.
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What are the characteristics of a population, a community, and an ecosystem?
Answer:
Population - All the members of one species that live in a defined area.
Community - All the different species that live together in an area.
Ecosystem - All the living and non-living components of an area.
Phospholipid bilayer:
Fibrous Protein:
Pore Protein:
Glycoprotein:
Channel protein:
Answer: -Forms a pone for movement of water -Transports ions -Used for identification of cells -Receptors for the cell -2 layers that limit what enters or leaves the cell
Answer:
Phospholipid bilayer: layers that limit what enters or leaves the cell
Fibrous Protein: Receptors for the cell
Pore Protein: Transports ions
Glycoprotein: Used for identification of cells
Channel protein: Forms a pone for movement of water
Explanation:
Phospholipid bilayer is consist of two layers, interior layer is hydrophilic (water loving) and exterior layer is hydrophobic (water hating). This layer functions as a selectively permeable membrane and allows only required materials into the cell.
Fibrous Protein is one of the type of protein and act as cell surface receptor. for example: collagen and fibronectin act as cell surface.
Pore Protein are beta barrel proteins that creates pores for the ions to diffuse across the cell.
Glycoproteins are located on the surface of the lipid bilayer and act in cell-cell recognition and bind to the cell after recognizing or identifying properly for further procedure.
A channel protein is a channel in he cell membrane that is made up of amino acids. It forms a hydrophilic gateway for water and small, polar ions.
Hence, the correct answer is:
Phospholipid bilayer: layers that limit what enters or leaves the cell
Fibrous Protein: Receptors for the cell
Pore Protein: Transports ions
Glycoprotein: Used for identification of cells
Channel protein: Forms a pone for movement of water
Choose one of the following three diagrams. Specify your choice here:__________ (a, b, or c). Identify the system(s) your diagram represents, and the parts associated with that system.
Answer:
b. Motor Unit
Explanation:
A motor unit is consist of motor neuron and muscles fibers connected through the axon terminal of neuron. Motor unit function for the movement (contraction and relaxation) of muscles.
A neuron is connected with muscles fiber through the axon terminal of neuron and is called neuromuscular junction. Skeletal muscle fiber is consist of a cylindrical muscle cell that contain microfibrils which participate in contraction and relaxation of muscles.
Neuron and muscle fiber coordinate with other other for the proper functioning of motor unit.
Hence, I selected diagram "b" that represents motor unit.
What does a virus need to replicate?
A. Ribosomes
B. Proteins
C. Nothing
D. Replication machinery of a cell
Organisms that cannot use sunlight directly obtain energy by
consuming plants or other——————
that have consumed plants
Answer:
Organisms
Explanation:
Organisms that cannot use sunlight directly obtain energy by consuming plant or other organisms that have consumed plants.
These organism are heterotrophs.
Plants are autotrophs as they produce their own food on their own. They are the primary producers in the ecosystem by means of photosynthesis. Heterotrophs relies on the food produced by autotrophs. They can obtain this by either feeding on plant matter or by feeding on primary consumers that feeds on plants.what is enormously important to the surrieal of specicies because it allowed populations ot better handle enviromental cariables such as weather extrences changed in food supply or disease
Answer:
I don't know sorry
Explanation:
I thought I new the answer but now I am not sure.
Why is it important that your body has the ability to replicate your DNA?
Answer:
In order for an organism to grow, develop, and maintain its health, cells must reproduce themselves by dividing to produce two new daughter cells, each with the full complement of DNA as found in the original cell. Billions of new cells are produced in an adult human every day.
Explanation:
In each case, what is the end product of burning the fossil fuel, and where does it go?
Answer:
when fossil fuels are burned they release carbon dioxide and other greenhouse gases which traps heat in the atmosphere and making them primary contributors to global warming and climate change
Explanation:
When fossil fuels are burnt, they generally give rise to six different kinds of products, these are carbon dioxide, sulfur dioxide, carbon monoxide, lead, nitrogen oxides, and particulate matter.
• Of these, the main product of the burning of fossil fuels is carbon dioxide.
• When the burning of fossil fuels takes place, the carbon dioxide and other greenhouse gases get released into the atmosphere in excess amounts and trap heat more than expected.
• Thus, making them the primary contributors to climate change and global warming.
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Which statement describes the relationship between a gene and an allele?
Alleles are different versions of a gene
Genes are different versions of an allele
Many genes make up an entire allele
Alleles are similar genes from different species of organisms.
Answer:
alleles are different versions of a gene
I don't know. does this help: A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene. Genes are responsible for the expression of traits. Alleles are responsible for the variations in which a given trait can be expressed.
How does the use of a pH meter help monitor the hydrosphere?
A. by indicating whether microorganisms are living in the water
B. by indicating if there is too much sediment in the water
C. by indicating whether the water is too acidic or basic
D. by indicating if there is enough dissolved oxygen in the water
Answer:
The correct answer is - C. by indicating whether the water is too acidic or basic.
Explanation:
pH meter or pH scale is the color indicating scale to measure the acidity or basicity of the particular solution of the element. pH meter measures the hydrogen ion activity of the freshwater or saline water of the hydrosphere and if it is acidic or basic. It helps in determining if the water can be a drink or if the water body has an appropriate pH level for the organisms to live.
Thus, the correct answer is - C.
Answer:
C.
Explanation:
I know this because i had to do a test and it was right
how do you calculate the adjusted amount of energy that is available to organisms that are one trophic level above producers
A. Net primary productivity plus gross primary productivity
B. Gross primary productivity minus net primary productivity
C.net primary productivity plus amount of organic material used in respiration
D. Gross primary productivity minus amount of organic mayerial used in respiration
Answer:
1. B- gross primary productivity minus amount of organic material...
2. D- Increases
3. B- by observing cellular respiration under the absence of light
4. D- dead organisms and waste are recycled throughout the trophic levels.
5. C- the rate that plants and other photosynthetic...
Explanation:
Life Processes Quick Check
Got 100% <3
The amount of energy that is available to organisms above producers is equal to the gross primary productivity minus the amount of organic material used in respiration (Option D).
Producers (e.g, plants, algae) are all autotrophic organisms at the first trophic level of the food chain in a particular ecosystem.
Gross primary productivity refers to the net amount of carbon fixed by producers in a particular ecosystem.
Moreover, the net primary productivity refers to the net amount of carbon dioxide that is fixed by producers (i.e., organic material) in an ecosystem minus the amount of organic material that is used for metabolic activities, i.e., during cellular respiration.
Therefore, the net primary productivity (NPP) can be estimated as the gross primary productivity (GPP) minus respiration rate (R):
NPP = GPP - RIn conclusion, the amount of energy that is available to organisms above producers is equal to the gross primary productivity minus the amount of organic material used in respiration (Option D).
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Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles. Explain the energy transformation in this process.
A. Chemical energy from broken bonds is transformed into mechanical energy for muscles.
B. Mechanical energy from broken bonds is transformed into chemical energy for muscles.
C. Mechanical energy from broken bonds is transformed into electrical energy for muscles.
D. Heat energy from broken bonds is transformed into electrical energy for muscles.
Answer:
I'm not great at science and especially not biology but
Explanation:
the energy is transformed by the nucleus inside the cell and energy is held there it will soon release motonchdria holds the blood cell and energy will be transformed somewhat that way sorry if it doesnt help
Answer: A Chemical energy from broken bonds is transformed into mechanical energy for muscles.
Explanation:
PLATO
true or false? harmful rays from the sun, called gamma rays, make up about 10% of the rays that reach the earth
help please!
Gravity, electricity, and magnetism are all non-contact forces.
What does this statement mean?
Your response must use the the following scientific terms: field and force.
Answer:
Gravity, electricity, and magnetism are considered non-contact forces because they do not physically act on objects.
Explanation:
Gravity, magnetism, and electricity all use fields to act on objects without actually touching them. They can all force objects to move without touching them through these fields.
Which of the following animals are an example of a herbivore?
HELP ASAP MARKING BRAINLIEST
Answer:
rabbit
Explanation:
herbivore: an animal that feeds on plants.
Blood can be tested to determine the presence of the virus associated with the development of AIDS, This blood test is used directly for
a) cure
b) treatment
c) diagnosis
D) prevention
Answer:
C diagnosis because they are testing to see if you have it
Explanation:
hope it helps
What is the other molecule of the sides that lies in between the sugars?
Answer:
Deoxyribose and phosphate
Explanation:
The other molecule of the sides that lies in between sugar are deoxyribose and phosphate. The sugar has the nitrogenous based molecule attached to it.
this might be easy but i dont know
Which types of cells have genetic material that is contained in a nucleus
Answer:
There are two basic types of cells, prokaryotic cells and eukaryotic cells. The main difference between eukaryotic and prokaryotic cells is that eukaryotic cells have a nucleus. The nucleus is where cells store their DNA, which is the genetic material. The nucleus is surrounded by a membrane.
Please help it’s urgent?!!!!
Answer:
B. have orderly crystalline shapes
Explanation:
When elements repeat themselves in the same ratio and develop into a repeating shape, the minerals must have orderly crystalline shape.
This informs the long range ordering of the substance they form into. We say such substances are crystalline in nature. Those without this orderliness are tagged as being amorphous and without shape or form. Each crystal can be used to identify the original substance as it is a fundamentally ordered unit.Identify the temperature that is equivalent to 95°F. Use this formula to convert the temperature:
Which organism is the primary consumer in the following food chain?
Plant Caterpillar — Lizard Snake
O A. Snake
O B. Caterpillar
O c. Lizard
D. Plant
Lizard organism is the primary consumer in the following food chain
The main consumer is the caterpillar. An organism is a primary consumer if it consumes plants. It qualifies as a secondary or tertiary consumer if it consumes other animals.
What is a primary consumer?
Every food chain starts with producers and here the producers is plant that makes food by the help of the process known as photosynthesis.This process converts the solar energy into chemical energy.
The primary consumer is caterpillar that is dependent on the plants for its energy need. They are most herbivores.
The secondary consumers depend on the primary consumer for their food.
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Answer: B. Caterpillar
Explanation: Primary consumers are herbivores and eat the primary producers. The only one of these options that fit this criteria is the caterpillar, which eats the plant (a primary producer).
Why do some types of bacteria form spores?
a
to increase the rate of reproduction
b
to increase their genetic diversity
c
to protect their DNA during unfavorable conditions
d
to convert organic molecules into energy
What is an example of a physical weathering?(1 point)
A. a rock wearing down due to acid rain
B. microscopic organisms producing compounds that break down rock
C. a metal tool left outside beginning to rust
D. bits being blown off a rock by heavy winds
Answer:
C.
Explanation:
Answer:
answer is bits being blown off a rock by heavy winds.
Explanation:
just took test
what's the answerrrrrr
Answer:
B
Explanation:
PLZZZ HELP ME
A large population of ground squirrels were separated over time by the Grand Canyon, eventually creating two new species.
Giraffes with longer necks are able to reach more food, live longer, and pass on long necks to more babies.
Arctic foxes have developed two-layered fur coats; a white layer for the extra cold winters and a thinner, brown layer for the short summers.
A flood washes away most of a population of field mice. Only those who lived in the roots of trees survived to pass on their genes.
UV radiation causes a mistake in a gene; changing one letter in the DNA code and causing a new eye color.
1.
Natural Selection
2.
Mutation
3.
Adaptation
4.
Genetic Drift
5.
Evolution
Answer:
1. Genetic drift
2. Natural selection
3. Adaption
4. Mutation
Explanation:
I'm not entirely sure that this is all correct, but for 2. Natural selection makes sense, and for the foxes that is adaption. I'm unsure about the first question though.
Hope this helps you a bit. Good luck on your studies.