Biology
- A company wants to start a nuclear power plant as a way to produce clean energy. They want to use the same reaction that's used in thermonuclear weapons. Which of the following explains why this is not possible? A. The energy in nuclear fission produces chemicals that harm the environment. B. The energy in nuclear fusion can't be generated in a controlled manner. C. The energy in nuclear fusion is too small to generate electricity. D. The energy in nuclear fission burns out as soon as it's produced. Please don't guess, try to give the right answer
- The response of an effector is _____. to maintain homeostasis to decrease the external stimulus to transmit a negative feedback impulse to provide a counter stimulus to neurons
-
What is the effect of acid rain on water resources?
-
Subject:
Biology -
Author:
lindseywong -
Created:
7 months ago
-
- Select all that apply. Functional groups are a group of molecules attached to a carbon-based core of an organic molecule. Key functional groups are _____. aminos carbonyls proteins phosphates carbohydrates
-
Which of the following correctly describes the path blood takes through the vessels starting from the point at which it leaves the heart?
Group of answer choices
arteries - arterioles - capillaries - venules - veins
veins - venules - arteries - capillaries - arterioles
veins - venules - capillaries - arterioles - arteries
Flag this Question
Question 21 pts
Which layer of the vessles contains muscle tissue, and which muscle type is it?
Group of answer choices
tunica media, cardiac
tunica interna, cardiac
tunica media, smooth
tunica externa, skeletal
Flag this Question
Question 31 pts
The ___ are the only vessels where diffusion takes place.
Group of answer choices
arteries
veins
capillaries
diffusory vessels
Flag this Question
Question 41 pts
Which vessels carry blood to the heart from the lungs?
Group of answer choices
pulmonary arteries
pulmonary veins
aortic trunk
superior and inferior vena cava
Flag this Question
Question 51 pts
You would expect to find valves
Group of answer choices
in the aortic trunk to help direct blood flow
in the capillary beds in the skin to help regulate blood volume
in the carotid artery so help blood flow overcome gravity
in the great saphenous vein in the leg to prevent backflow
-
Subject:
Biology -
Author:
golden graham -
Created:
7 months ago
-
- A 45-year-old male client with a confirmed DVT is being discharged from the ED. Which of the following client statements indicates that the client has received proper nursing instruction and understands how to manage his condition? a) "I need to ice my leg every 2 hours for about 20 minutes." b) "I should lie on my side with my knees bent when sleeping." c) "I need to do my leg exercises five times or more every hour." d) "I should try not to drink too much during the daytime."
- According to the cladogram, which organisms have roundworms as a common ancestor? mollusks and flatworms sponges and chordates flatworms, sponges, and cnidarians mollusks, echinoderms, chordates, and annelids
- Can you identify the ploidy of different structures? drag the terms on the left to the appropriate blanks on the right to complete the sentences. terms may be used once, more than once, or not at all.
- The nervous system is responsible for your sense of smell. true or false
- A biochemist isolates and purifies various molecules needed for DNA replication. When she adds these molecules to DNA, replication occurs, but half of the DNA produced consists of a normal DNA strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture
- A scientist uses radioactive nitrogen to label the nitrogenous bases of the DNA of a cell. Then the DNA is allowed to replicate, and the new strands take up non-radioactive bases. Do one, both, or neither of the daughter cells have radioactive DNA? Explain.
- Compare the practices of shelterwood cutting, clearcutting, and seed-tree cutting. ANSWER: Clearcutting removes all the trees within a certain area at one time. Shelterwood cutting also removes all the trees in an area, but does it in stages over several years. Seed-tree cutting removes all the trees except for a select number of mature trees that can then reseed the area. Seed-tree cutting and shelterwood cutting allow for the harvested areas to recover over time without direct intervention
- Why is the pituitary gland called the master gland? O It is the largest gland in the body. It regulates the work of many glands in the body. O It helps the brain master higher-level thinking processes. It controls the heart, which is the master pumping organ in the body.
-
Creating a Bottleneck Effect in an Ostrilope Population in the Sim
Goal: In fewer than 30 generations, change the starting ostrilope population into a population of at least 70 individuals with low variation in color traits (4 traits or fewer). Do this without adding a predator.
Do:
Decide on a strategy to reduce the variation of the ostrilope population.
Open the Natural Selection Simulation and open the mode: Color Change Mission.
Try out your strategy by making any changes in either Build or Run.
Use the histograms in Analyze or the Traits Histogram Window in Run to see if your strategy was successful.
Tips:
You can modify abiotic factors in Run at any time by pressing the Abiotic Factors icon in the lower-right corner of the screen.
Do not make any changes to the starting ostrilope population settings.
Return to Build and press REBUILD to reset the Sim to the default settings.
-
Subject:
Biology -
Author:
thumperhk3d -
Created:
1 year ago
-
-
1. Fill in the complementary DNA strand using DNA base pairing rules. 2. Fill in the correct mRNA bases by transcribing the bottom DNA code 3. translate the MRNA codons and find the correct amino acid using the codon table 4. Use the MRNA sequence to find the correct anticodon for the TRNA molecule
-
For each glucose that enters glycolysis, _____ acetyl CoA enter the citric acid cycle. For each glucose that enters glycolysis, _____ acetyl CoA enter the citric acid cycle. 4 1 5 0 2
-
Subject:
Biology -
Author:
missiebarron -
Created:
8 months ago
-
-
Production of the male gametes is known as
ОА.
Oogenesis
O B.
Spermatogenesis
O c.
Seminiferous
D.
Semengenesis
-
Subject:
Biology -
Author:
cashgarrett -
Created:
8 months ago
-
- what is the scientific study of earth's and atmosphere weather called help plzzzzz
-
how would you relate the changes of earth surface to the earthquake activities and volcanic eruptions?
-
Subject:
Biology -
Author:
hot pepperhhil -
Created:
8 months ago
-
- how does hydrogen bond DNA strands together?
-
Drag the vocabulary terms onto this concept map about the components of an atom.
-
Subject:
Biology -
Author:
alexandriaspencer -
Created:
8 months ago
-
-
The picture below shows the devils Millhopper sinkhole in Florida.
The sinkhole was formed when:
A. River water eroded the soil
B. An underground cavern collapsed
C. A hurricane flooded low lying areas
D. Plant roots caused mechanical weathering of rocks
-
Subject:
Biology -
Author:
scruffypt9s -
Created:
1 year ago
-
-
Protein digestion begins in the ________; fat digestion begins in the ________. Stomach; small intestine Mouth; stomach Esophagus; stomach Small intestine; small intestine Small intestine; large intestine
-
Subject:
Biology -
Author:
dakotayb2k -
Created:
8 months ago
-
- fatty acids are the building blocks of. A. lipids B. amino acids C. DNA D. monosaccharides
-
InformationHow did
the discovery of isotopes disprove one part of
Dalton's atomic theory
-
Subject:
Biology -
Author:
milesandrade -
Created:
8 months ago
-
Useful articles
-
There are so many different educational environments existing in modern society that it is hard to count them all. When choosing where to get an education, people must get acquainted with at ...
What is grad school?
-
Having passed the first educational milestone, primary education, elementary school students embark on a journey through the depths of the world of learning. Their next destination is a secon...
What is secondary school?
-
In the modern, rapidly changing world, there is a focus on getting practical skills and experience in various job occupations rather than academic theoretical knowledge. In such a way, vocati...
What is vocational school?
-
Such situations often occur when students simply do not have the opportunity to spend time on the way to school every day or do not have a home at all. In such cases, there are boarding schoo...
What is boarding school?
-
"Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young" ― Henry Ford. People start learning from the very beginning of their l...
What is the purpose of education?
Top Users
-
DoshikOneLove
20 -
maxstejskal
5 -
empireunstoppable
5 -
1420839
5 -
monabarry
4 -
nazar131019
2 -
ah000166347202938
2 -
alexvjhd
1 -
martinkdnz
1 -
kaylynnbarron676
1
Choose a language and a region
How much to ban the user?
1 hour
1 day
100 years