Answers
Answer:
The chloroplast
Explanation:
The choloroplast takes in nutriets (sunlight) and converts it into energy for the plant
Related Questions
A bird or feathered dinosaur is ________.NeornithesArchaeopteryxEnantiornithesPaleognathae
compare the six nutrients of life for farm animals (water, protein, carbohydrates, fats, vitamins, and minerals).
Which phrase describes organisms that formed index fossils?
In this activity, you will use presentation software to create a presentation of 15 to 20 slides explaining your arguments in support of or against the following statements:AIDS continues to be a global health crisis.AIDS still meets the definition of a pandemic.Your claims should be supported by scientifically complete evidence.Follow the steps provided to research, plan, and create your presentation. This guide about the research process can help.Time to complete: 2 to 3 hoursPart A: Ask QuestionsBegin by creating a list of questions to guide your research and help you form a convincing argument. Your presentation should answer some of these questions:What is the definition of a pandemic?How does a pandemic differ from an endemic or epidemic?What is the life cycle of the HIV virus once it enters the body? How does the genetic codeof the virus change?How does HIV affect the body?How do people become infected with HIV?How does AIDS develop from an HIV infection?What are the current infection rates of HIV across the globe?Where is HIV/AIDS most prevalent?What treatments are currently available for HIV/AIDS?Do some regions of the world have better access to treatments than others?What is the average life expectancy for someone with HIV? Does life expectancy differ around the globe?Now write four additional questions about HIV/AIDS that could help strengthen your argument in the presentation.
A) 0.25
B) 0.15
C) 0.05
D) 0.04
E) there is not enough information to answer this question
Answers
Answer:
D) 0.04
Explanation:
Assuming that a is the recessive allele when homozygous that causes the polycystic kidney disease and A is the dominant one:
Since Penelope's sisters has the disease, she must be homozygous recessive (aa). Her parents must both be Aa (otherwise her sister wouldn't have inherit the disease). So, the probability of Penelope of being heterozygous (Aa) is 0.5.
On the other hand, the probability of having the disease in the population is 0.04 (1 minus the probability of not having the disease which is 0.96). This, according the Hardy–Weinberg principle, in the population would represent the genotype frequency . So, the allele a would have a frequency
=
= 0.2. Since the gene has only two alleles, all alleles must be either A or a , therefore p + q = 1. So, the A population's frequency is p = 1 - q = 1 - 0.2 = 0.8.
The European man's probability of being Aa (doesn't have the disease but can carry the disease allele) is 2pq = 2 x 0.8 x 0.2 = 0.32.
The probability of Penelope and the European man of having an ill kid (assuming they both are Aa) is 0.25.
Finally, given the Penelope's probability of being Aa (0.5), the European man's 's probability of being Aa (0.32) and the probability of having a kid homozygous recessive aa (0.25) = 0.5 x 0.32 x 0.25 = 0.4 is the probability that they will have a child with ARPKD.
various times after the labeling, samples of the cells were observed using an electron
microscope to determine the location of the radioactively labeled polypeptides.
Figure 1 summarizes the results at 5 minutes, 15 minutes, and 30 minutes. The dark
dots in the figure represent the radioactively labeled polypeptides.
Nucleus
Golgi
Secretory
Vesicles
Time
5 min
ER
15 min
30 min
Figure 1. Radioactively labeled polypeptides
Using the experimental results, describe the pathway that secretory proteins take
from their synthesis to their release from the cell. (3 Points)
Answers
Answer/Explanation:
First, the polypeptides are synthesised and folded in the endoplasmic reticulum, which is a series of folded membranes.
Then, the polypeptide is packaged into vesicles and moved into the Golgi apparatus, which are stacks of flattened sacs. At the Golgi apparatus, the polypeptide is modified, forming the final structure of the protein. The proteins are then packaged in to vesicles to be transported to their final destination outside of the cell.
The proteins are delivered outside the cell in vesicles via a process called exocytosis. The vesicles reach the membrane, fuse with the membrane, and are then delivered outside the cell.
Answers
The correct answer is the option (A) heparin.
DVT refers to a condition called the deep vein thrombosis when a blood clot occurs in the deep veins of the legs in the body. PE refers to the Pulmonary embolism when a blood clot is observed in the artery of the lungs.
The drugs used in the treatment of DVT and PE are called the anticogulants which interfere with the process of blood clot formation. Heparin and warfarin are the two older anticoagulants used in the prevention and treatment and prevention of DVT and PE. Heparin is given intravenously to treat DVT and PE whereas, warfarin is taken as a tablet or pill through the mouth. Heparin allows the body's clot lysis mechanism to break down the existing clots and it is also a natural anticoagulant produced by the basophils and the mast cells of the blood.
Thus, heparin is the old drug that is used subcutaneously to prevent DVT in high-risk patients and intravenously to treat DVT and PE.
B) The cerebellum
C) The cerebrum
D) The basal ganglia
Answers
Answer:
D) The basal ganglia
Explanation:
Basal ganglia is located at the base of forebrain and the top of midbrain. It is involved in many functions because it is connected to many parts of the brain like thalamus and cerebral cortex. One of the functions of basal ganglia is to control the voluntary movements of the skeletal muscles.
Damage to basal ganglia can disturb the muscles causing involuntary movements, abnormal gait and increased muscle tone. For example, muscle tone is the tension in skeletal muscles caused due to minor involuntary contractions. Substantia nigra part of basal ganglia is responsible for controlling it. If it is damaged, muscle tone can increase which will cause unnecessary tension in skeletal muscles leading to uncontrolled movements.
Answers
Final answer:
Over many years, the lynx populations separated by a river will likely experience phenotypic changes, with the northern population developing thicker coats due to colder weather. This change is a result of selective pressures and can lead to geographic variation known as a cline, possibly culminating in speciation.
Explanation:
The question asks about how two lynx populations, separated by a river, will differ in their coat thickness after many years due to different environmental conditions. The population on the north side of the river experiences much colder weather compared to the population on the south side. Over time, due to geographical variation and selective pressures from their respective environments, it is likely that the two lynx populations will exhibit phenotypic changes, such as variations in coat thickness.
These changes can be understood as a type of geographic variation known as a cline, where a species' characteristics gradually change across an ecological gradient. In this case, we would expect the population in the colder northern environment to develop thicker coats as an adaptation for better heat conservation, a trait that would be less advantageous for the population on the warmer southern side of the river. This adaptation is a result of the selective pressures imposed by the differing climates on either side of the river.
Over many years, the accumulation of these selective pressures can eventually lead to significant divergence between the two populations, potentially giving rise to speciation if the genetic differences become substantial enough to prevent interbreeding should the river barrier be removed.
Learn more about Geographic Variation here:
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Answer: The northern Lynxes' will experience thicker coats over time, the southern Lynxes will experience no chance whatsoever.
Explanation: the northern lynxes live on the colder side so they will adapt to be more used to the environment. the southern lynxes will stay the same because the weather isn't that bad.
Answers
Answer:
The Hay-flick Limit is a concept that helps to explain the mechanisms behind cellular aging. The concept states that a normal human cell can only replicate and divide forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis.