Answer:
It takes about 24 hours for sperm to fertilize an egg....
Explanation:
When the sperm penetrates the egg, the surface of the egg changes so that no other sperm can enter. At the moment of fertilization, the baby's genetic makeup is complete, including whether it's a boy or girl...
The main reproductive organ of the plant is the
Hello!!
.Stamen.
Structure. As a plant's reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands (Figure 19). The stamen is the male reproductive organ. It consists of a pollen sac (anther) and a long supporting filament.
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where is the inherited information that determines a cell’s function?
Answer:
Genes
Explanation:
The hereditary information (inherited information) is contained in genes, located in the chromosomes of each cell.
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- Heather
What might scientists learn about the evolution of human behavior from studying cognitive behavior in animals?
Answer:
When we gain insight into animal behavior, we are in a stronger position to understand vexing conservation problems, such as how to save endangered species, assess environmental quality, design nature preserves, and evaluate the importance of human-related threats to survival in otherwise fit animals.
Explanation:
Which of the following is TRUE about ovarian cysts?
Answer:
d. All of the above
Explanation: is correct.
Answer:
ALL OF THE ABOVE
Explanation:
Someone plz help me :(
Answer:
it's a or c but I think it's a
Sedimentation accumulation found in bodies of water can be the result of _______. A. Fertilizer runoff b. Pesticides and herbicides c. Erosion from agricultural practices d. All of the above.
Answer:
All of the above.
Explanation:
All of these can contribute to sediment accumilation in bodies of water.
Sedimentation accumulation found in water bodies can be the result of fertilizer runoff, pesticides, pesticides, and erosion from agricultural practices. So, the correct option is D.
What do you mean by Sedimentation accumulation?The sedimentation accumulation may be defined as a process of gathering sediments into the rocks, and water bodies, and increasing their actual mass.
Sedimentation accumulation may be carried by the runoff of fertilizers, pesticides, and insecticides. It also occurred due to the process of soil erosion that takes place during agricultural practices.
Therefore, the correct option for this question is D.
To learn more about Sedimentation accumulation, refer to the link:
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help pls !! will give brainliest -
7A - Indicate the complementary strand of the DNA molecule shown here.
5’ A A T C G C T G C C T 3’
7B - If the original DNA molecule shown in question 7A were used in the process of transportation to produce mRNA, then what would be the sequence of the mRNA molecule?
(please answer both questions)
Answer:
A A T C G C T G C C T
T T A G C G A C G G A
U U A G C G A C G C A
Explanation:
Adenine (A) and Thymine (T) pair together. Cytosine (C) and Guanine (G) pair together.
With mRNA, the RNA doesn't have Thymine, so it replaces it with Uracil (U).
Are mitochondria found in animal cells? Explain.
Answer:
Mitochondria is found in animal cells.
General Formulas and Concepts:
Cellular Respiration
TCA CycleETC/ChemiosmosisExplanation:
The production of ATP is found mainly in the mitochondria. Producing ATP must undergo cellular respiration. All plants and animals go through cellular respiration to provide energy for everyday actions needed by cells. Therefore, both plants and animals have mitochondria.
Topic: AP Biology
HELLLP!!!!! Seeds are one way that plants reproduce. What are the reproductive advantages of using seeds to reproduce? What are the two major divisions of seed plants, and how do plants in each of these divisions reproduce?\
Explanation:
1-Seeds provide a protective coat so that the embryo plant can develop when it finds a nice piece of soil.
2-Vascular plants are subdivided into two classes: seedless plants, which probably evolved first (including lycophytes and pterophytes), and seed plants. Seed-producing plants include gymnosperms, which produce “naked” seeds, and angiosperms, which reproduce by flowering.
Here u go <3
Answer:
The Seed Coat. The seed coat is one major advantage seeds have over spores. Nourishment. Each seed contains nourishment for the embryo inside the seed.
Explanation:
The viral envelope closely resembles the ______________________. a. prokaryotic cell wall. b. capsomere c. eukaryotic cytoplasmic membrane. d. eukaryotic cell wall.
The viral envelope closely resembles the eukaryotic cell wall. That is option D.
The virus is a type of microorganism that contains DNA (Deoxyribonucleic acid) and surrounded by a protein coat.
There are different types of viruses which include:
Double stranded DNASingle stranded DNADouble stranded RNASingle stranded RNAThe parts of a virus include:
the protein coat (viral envelope)DNA (Deoxyribonucleic acid)The viral envelope is the external part of the virus, which is made up of proteins and lipids, and is capable of protecting the virus from harm.
Also the cell wall of the eukaryotic cell wall also protects these organisms from external harm.
Therefore, the viral envelope closely resembles the eukaryotic cell wall.
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what type of fossil forms when the impression from the remains of an organism is filled in with soil and hardens into the shape of the original organism?
Answer:
casts
Explanation:
casts are formed by filing the cavity of minerals collected from the surrounding
Answer:
i belive the answer is "casts"
Explanation:
bones that surround the spinal cord are classified as
Answer:
the answer is vertebral bones
Explanation:
the vertebral bones surrounded our spinal cord and our skull acts as an internal crash helmet to protect our brain
One variable not mentioned in the description of the experiment that could affect the results of the investigation is reduced canopy cover. Describe the effect that canopy cover would likely have on the results of the investigation.
The canopy cover can affect the results of an investigation because a higher canopy cover is accompanied by a decrease in the availability of sunlight.
The canopy cover is the proportion of the ground covered by vegetation when it is viewed from vertically above the planted area.
The level of canopy cover affects light availability on the ground and also its microclimate, thereby this feature can also alter any biological experimental procedure by affecting the level and type of biodiversity.
A reduced canopy cover may alter any experimental outcome by increasing the energy/light input in the ground cover stratum, thereby likely affecting biodiversity.
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how many chromosomes are in a typical human body cell?
Answer:
46 chromosomes
Explanation:
There are 46 chromosomes in a typical human body cell. (23 pairs of chromosomes)
how many chromosomes are in a typical human body cell?
Answer:-46 chromosomes
Explanation:-The normal number of chromosomes in every cell of a typical human body is a total of 46 chromosomes, or 23 pairs.
The element lithium has two common isotopes: Li–6 and Li–7 If the average atomic mass of lithium is 6.94004 u, determine its percent isotopic abundances. Step by step and explain.
First we need to determine the average atomic mass of these isotopes.
The atomic masses of Lithium-6 and Lithium-7 are 6.0151amu and 7.0160amu respectively.
Now that we have that, we need to set up the relative abundance problem.
We can do that using the formula (M1)(x) + (M2)(1-x) = M(E)
Because you asked for details, I'll explain what each variable stands for-
M1 = the mass of one isotope
x = the relative abundance
M2 = the mass of the second isotope
M(E) = the atomic mass of the element from the periodic table
Therefor all we do now is plug in our respective variable.
M1 = 6.0151amu (Lithium-6)
x = unknown relative abundance
M2 = 7.0160amu (Lithium-7)
M(E) = 6.94004amu
Now the formula plugged in will look like this:
6.0151x + 7.0160(1-x) = 6.94004
Now doing some quick math, we can determine that x=0.07589
For the last step we need to find the percent abundance of each element, which is quite simple. We take X and multiply it by 100 to find Lithium-6, so 0.076 x 100 = 7.6%
and since then we use 1 - X, so 1 - 0.076 = 0.924
We take that and also multiply it by 100, so 0.924 x 100 = 92.4%
Conclusion:
The abundance of the Lithium-6 isotope is 7.6%, and the abundance of the Lithium-7 isotope is 92.4%.
Please ask if you have any questions and I hope this was helpful!
Match the color components of light with the resulting color of light
A. Yellow
B. White
C. Magenta
D. Cyan
____1. Red + Green
____2.Red + Blue
____3. Green + Blue
____4. Red + Green + Blue
Answer:
» 1. A. Yellow » 2.C. Magenta» 3.D. Cyan » 4.B. WhiteWhich type of tooth is used to fragment foods into ever-smaller chunks by shearing, slicing, crushing, and griding
Please help quick!
How are Protista different from Bacteria?
a) Protista have nuclei and Bacteria do not.
b) Protista reproduce asexually and Bacteria do not.
c) Protista are heterotrophic and Bacteria are not.
d) Protista have cilia and Bacteria do not.
I'll mark brainliest if correct!
Answer:a
Explanation:
Please help me!!! ASAP
cellular respiration
Explanation:
A
how many alleles for each gene does an organism carry?
Fair weather, rain showers, clear and cold, and warm and windy are examples of which of the following?
A. weather alerts
B. weather conditions
C. weather movement
D. weather processes
Answer:
C. weather movement
Explanation:
correct me if im wrong
the main enzyme involved in linking individual nucleotides is
Answer:
The primary enzyme involved in this is DNA polymerase which joins nucleotides to synthesize the new complementary strand.
True/False: In a neuron at rest, the concentration of sodium ions is 14 times higher outside the cell than inside the cell.
Answer:
true
Explanation:
The sodium and chloride ion concentrations are lower inside the cell than outside, and the potassium concentration is greater inside the cell. These concentration differences for sodium and potassium are due to the action of a membrane active transport system which pumps sodium out of the cell and potassium into it.
Birds and insects both have wings, but we do not consider this similarity as evidence of relatedness because ____.
The wings in birds and insects are not considered as evidence of relatedness because they differ in structures even though their functions may be the same.
Organs in different organisms that are different in structures but similar in functions are referred to as analogous organs. Even though analogous organs serve as evidence of organic evolution, they are indications that organisms differ in the paths taken to evolve.
Some other organs may be similar in structures but different in functions. These types of organs are known as homologous organs and are indications that organisms are kind of related in the path taken to evolve.
More on analogous organs can be found here: https://brainly.com/question/11915249
identify the location of reduction in an electrochemical cell.
Answer:
cathode electrodes.
Explanation:
Electrochemical cells have two conductive electrodes, called the anode and the cathode. The anode is defined as the electrode where oxidation occurs. The cathode is the electrode where reduction takes place.
Write the function of nucleus in the cells of organism
Answer:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
Explanation:
HOPE IT HELPS...............This is a question on the circulatory system. I don't understand how the pathway that the blood goes through in the heart makes it oxygenated. Could someone pleas explain to me what each part does and how when it goes to the lungs it gets oxygenated?
Answer:
deoxygenated blood is pumped back to the heart with the superior vena cava and inferior vena cava. Blood is then in the right atrium then it is pushed to the right ventricle in the heart. it is the pumped through the pulmonary artery to the lungs(the pulmonary artery is the only artery that carries deoxygenated blood). In the lungs blood is pumped to the cappilleries in the bronchus where oxygen in the air is passed through to the blood with heamoglobin and thus now the blood is oxygenated. The blood is the pumped brought back to the heart with the pulmonary vein(the pulmonary vein is the only vein to carry oxygenated blood).It flows into the left atrium where it is then pushed down into the left ventricle and is then pumped up through the aorta to the whole body.
Explanation:
I hope this explains what you asked.
What can bacteria do with “broken down” materials ?
What is the probability that a couple will have a type A child if the mother has Type
A blood and is heterozygous for the trait and the father has type AB blood?
Answer:
50%
Explanation:
To solve this, we'd need to use a Punnett square. Since the mother has a heterozygous genotype and has an A-blood phenotype, we know that she is AO and the father is AB.
A B
A AA AB
O AO BO
According to this, the four possible blood types, with equal probability are: AA, AB, AO, and BO. Both AA and AO genes will result in type-A blood, since A is dominant over O. Therefore, there is a 2 in 4 (or 1 in 2, or 50%) chance of the child having type-A blood.
The purpose of the foot of a molluscs is:
Answer:
Foot of a molluscs is used for locomotion and anchorage, and varies in shape and function, depending on the type of mollusk under study.