Answer:
A. Rr
Explanation:
A. has the same phenotype
D. has different prototypes
Which animal trait was Darwin's theory of natural selection based on? (1 point)
O swimming ability of Galápagos iguanas
O beak morphology of Galápagos finches
O predatory behavior of foxes
o coloration of peppered moths
Answer:
beak morphology of Galápagos finches
Answer:
Beak Morphology.
Explanation:
His theory was based off of the finches from different areas and their ability to pick up food. The beak shape was based off of the diet of the bird. For example, if a finch had a diet consisting of seeds, it had a dense, powerful beak that was able to crush the seed.
In the presence of penicillin, a cell dies because.
Which statement best describes two objects experiencing a gravitational interaction?
A.
The objects can only repel each other and the force does not depend on their masses.
B.
The objects can only attract each other and the force depends on their masses.
C.
The objects can attract and repel each other and the force does not depend on their masses.
D.
The objects can attract and repel each other and the force depends on their masses.
How many breeds of elephant are there?
Answer:
3
Explanation:
Answer:
There are 3 different species or breeds of elephants.
Explanation:
They are:
- The African Savanna aka Bush Elephants
- The Asian Elephants
- The African Forest Elephants
I hope it helps! Have a great day!
Anygays-
Environmental factors typically activate genes in a cell by causing the cell to —.
Answer:
Environmental factors typically activate genes in a cell by causing the cell to transcribe specific DNA segments to mRNA for translation.
Environmental factors typically activate genes in a cell by causing the cell to transcribe specific DNA segments to mRNA for translation. The correct option is D.
What are environmental factors?This interaction is an illustration of how the environment influences how genes are expressed. In certain circumstances, the environment triggers the expression of particular DNA segments, which results in their transcription to mRNA and subsequent utilization as building blocks for proteins.
Other regions of the genome are left silent or are compelled to do so in the meantime. Mutations or straightforward biochemical interactions between the environment and the genome may cause this.
Therefore, the correct option is D. transcribe specific DNA segments to mRNA for translation.
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The question is incomplete. Your most probably complete question is given below:
A.produce identical daughter cells through mitosis
B.form haploid gamete cells through meiosis
C.fuse with another cell to increase the size of its genome
D.transcribe specific DNA segments to mRNA for translation
Name the following molecular compounds: CO, N2O4, PCI3.
Answer:
CO = carbon monoxide
N2O4 = Dinitrogen tetroxide
PCl3 = Phosphorus trichloride
1. Which of the following is NOT an example of cell migration as a part of cell differentiation?
A.
mesenchyme cells forming mesoderm during gastrulation
B.
primitive streak formation in a chick embryo
C.
concentration of protein complexes during cleavage
D.
convergent extension to elongate the archenteron in the sea urchin
2 .What is the role of cleavage in embryonic development?
A.
Cleavage allows for rapid development of a large number of smaller cells.
B.
Cleavage promotes differentiation of cells into germ layers.
C.
Cleavage prevents polyspermy.
D.
Cleavage plays a role in apoptosis, not in embryonic development.
The option that isn't an example of cell migration as a part of cell differentiation is C. concentration of protein complexes during cleavage
What is a cell?It should be noted that a cell simply means the basic unit of life. Cell migration is the evolutionary process that allows cells to move.
The role of cleavage in embryonic development is that cleavage plays a role in apoptosis, not in embryonic development.
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What is the main difference between your ventricles and your atria?.
Answer:
The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of the heart.
Explanation:
hope this helps
Natural selection changes allele frequencies because some __________ survive and reproduce better than others.
Answer:
individuals
Explanation:
.
How are spores similar to seeds?
Answer:
Spores grow and spread, similar to seeds, yet only in a larger amount.
__________________________________________________________
Questions?Ask in the comments box.
help please
A cell is in a solution that contains dissolved oxygen. What occurs when the cell uses oxygen for respiration?
A.
Oxygen will be carried across the cell membrane by special transport molecules.
B.
Oxygen will be held in place within the solution by special transport molecules.
C.
Oxygen in the cell will naturally diffuse into the solution.
D.
Oxygen in the solution will naturally diffuse into the cell.
Answer:
D.
Explanation:
As the oxygen inside the cell is utilized by the cell for respiration, therefore the concentration of oxygen inside the cell decreases and the oxygen in the solution naturally diffuses inside the cells through simple diffusion.
What is dissolved oxygen?
Dissolved oxygen is the amount of oxygen that is dissolved in a particular solvent. The dissolved oxygen in water comes from the atmosphere. The aquatic plants that produce the oxygen also contribute to the dissolved oxygen in water bodies.
Aquatic organisms require dissolved oxygen for respiration as they cannot take up oxygen from the atmosphere. Oxygen in water can be measured as milligrams per liter or the percent saturation.
In the RBCs, the oxygen combines with the hemoglobin and is transported by hemoglobin-facilitated diffusion or through simple diffusion in which the oxygen crosses the plasma membrane and is transported to the blood plasma through diffusion.
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O A. Spindles
O B. Chromatids
O C. Centromeres
O D. Gametes
Answer:
D. Gamates
Explanation:
Meiosis is a cell division that ends up producing gamates as sperm or egg cells.
In this group, which percentage does the green seed
represent?
O 25%
O 50%
O 75%
Yellow
Yellow
O 100%
Yellow
Green
Identify three functions preformed by organ systems
The question you've asked is not clear, you haven't specified which organ system are you talking about. No worries, I've noted down key functions of 11 organ systems of the human body, you can pick any of them that you want.
Some of the main functions of the 11 organ systems include the following:
Skeletal system:
shape/support for the body
protect some organs (brain, heart, lungs, spinal cord, etc.)
mineral storage (e.g., Ca and P)
site for muscle connections
site for blood cell formation
Muscular system:
movement
since there are three types of muscle—cardiac, smooth, and skeletal—there are specific functions for all of these
Cardiovascular system:
pump blood throughout the body
the blood will transport nutrients, oxygen, waste, and hormones
the blood also functions as a part of the immune system and allows the white blood cells/antibodies to gain access to infected/wounded areas
Excretory system:
produce and store urine in the kidneys and bladder
release urine through the urethra
Digestive system:
digest food into nutrients that can be absorbed
absorb nutrients
make certain vitamins (e.g., Vitamin K is made by bacteria in the large intestine)
Reproductive system:
the main function here is to produce offspring
another function—in line with the endocrine system— is to make hormones (e.g., testosterone and estrogen, which affect male and female characteristics)
Endocrine system:
hormone production
these hormones act throughout the body performing multiple jobs (e.g., blood sugar levels [insulin/glucagon], growth [growth hormone], male characteristics like facial hair [testosterone]
Integumentary system:
this is the skin
protection from some pathogens (unless you get a cut)
sensations at the skin level (texture, heat, pressure, pain)
Nervous system:
made of the central (brain and spinal cord) and peripheral nervous systems
this system transmits signals from one part of the body to another and this includes your senses
Respiratory system:
this mainly includes your lungs and trachea
the main function is the exchange of gases (oxygen and carbon dioxide)
Immune system:
the main function is to defend the body against pathogens
this is done with the help of the cardiovascular system which has white blood cells and antibodies in the blood
The primary colors of visible light are red, orange, yellow, green, blue, and violet.
a. true
b. false
Answer:
its true
basically the colors of the rainbow
Explanation:
Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?
helps with communication; contains mostly cellulose
contains mostly cellulose; forms the outer layer of animal cells
is found in plant cells; is found in animal cells
is semipermeable; found in animal cells
Answer:
uyy
Explanation:
nb gh
Answer:
contains mostly cellulose; forms the outer layer of animal cells
Explanation:
Which change could likely happen if the average temperature increased in an ecosystem?.
If the average temperature increased in an ecosystem then Some organisms would not be well-adapted to the higher temperatures.
What are the 4 types of ecosystems?They are as follows:
Forest Ecosystems.Grassland Ecosystems.Tundra Ecosystems.Desert Ecosystem.Thus, Some organisms would not be well-adapted to the higher temperatures.
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someone answer please I need someone to answer
Roads are often built through forests for industrial purposes or as land is developed for residential and commercial needs. How would road construction through a forest most likely affect the ecosystem?.
what is cell? and who discover it?
Answer:
The cell was first discovered and named by Robert Hooke in 1665. it is the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm.
Explanation:
xx
Julia made a model of a cell in a clear plastic zipper bag. She used a marble for the nucleus and pinto beans for mitochondria.
Which of the following options would be best for making her model more like a plant cell?
A.
Put the bag inside a clear plastic box.
B.
Put the bag inside a larger clear plastic bag.
C.
Take the marble out of the bag.
D.
Take the pinto beans out of the bag.
Answer:A
Explanation:I did this 1
Prokaryotes are organisms that do not have defined nuclei in their cells. Eukaryotes are organisms that have cells with membrane-bound nuclei. In which of the following kingdoms are prokaryotes found?
A. Plant and Animal only
B. Bacteria and Archaea only
C. Bacteria, Archaea, Protist and Fungus only
D. Protist, Fungus, Plant and Animal only
Answer: I took it this year so I am sure the answer is c .
12.
A lizard species mostly eats fruit from one
particular type of tree. If a virus kills most of
these trees, which individual lizards will most
likely survive?
A.
lizards that can climb higher in the fruit trees
B.
lizards that have darker coloration
C.
lizards that can find other types of food
D.
lizards that produce more offspring
The amniotic egg, which is present in reptiles, birds, and mammals, is a good example of: horizontal gene transfer. coevolution. homology. convergent evolution. analogy.
The amniotic egg, which is present in animals such as reptiles, birds, and mammals, is a good example of homo-logy.
What is homo-logy?The term 'homo-logy' makes reference to the same evolutionary origin (ancestor) for a given structure.
A structure and/or sequence is homo-logous when it derives from the same evolutionary ancestor.
Conversely, an analogy means that the structure and/or nucleotide sequence do not share an evolutionary origin.
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why is anaerobic respiration useful?
Answer:
It is useful during exercise. When the body doesn't get enough oxygen during exercise, it relies on anaerobic respiration for an energy supply. Instead of carbon dioxide and water, however, anaerobic respiration produces lactic acid. Also, anaerobic respiration releases less energy than aerobic respiration but it does this more quickly.
Hope this helped.
- profparis
Answer:
many of our foods are produced by microorganisms respiring anaerobically.
The systemic circulation is movement of blood from the ______ side of the heart to the systemic cells of the body and back to the ______ side of the heart.
Systemic circulation involves the movement of blood from the right ventricle of the heart to the cells of the body and back to the heart through the right atrium.
Systemic circulationIt is a form of blood circulation through which functional blood is supplied to all the cells and tissues of the body.
The system starts with oxygenated blood leaving the right side of the heart through the ventricle.
The blood travels through arteries to different cells/tissues of the body, supplies them with oxygen and vital nutrients, and picks up waste materials simultaneously.
Deoxygenated blood then travels through veins back to the heart through the right atrium.
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which of the following occurs during a lysogenic cycle?
Question 1 (2 points)
What are two lesser-known functions of the kidneys (via released hormones and
prostaglandins)?
reproductive cell transportation and bone marrow production
aiding in digestion and extracting carbon dioxide from blood
white blood cell production and repairing nerve cells
O red blood cell production and destroying pathogens
I believe the answer would be aiding in digestion and extracting carbon dioxide from blood.
Explanation: Bone marrow production stops when a child reaches maturity. White blood cells are produced from bone marrow, and O red cells are produced from red bone marrow, leaving the only answer left by process of elimination as B. Kidneys are also responsible for keeping ph balance, sodium and electrolyte balance, along with the balance of other vitamins and minerals in the blood.
What general term is used to describe the introduction of foreign dna into a cell?.
if two organisms have the same name in it does it mean they are closely related?
Answer:
yes
Explanation:
similar structure can indicate relatedness
