Answer:
Parasitic flatworms protect themselves from the host's digestive liquids by developing teguments or resistant coverings around their bodies. They secrete anti enzymes to neutralize the digestive juices of host which are produced in intestine where flatworm lives.
Science, Geology, Class 8
1. choose the correct answer ( CTCA )
a. what makes the soil fertile?
i. rock particles
ii. humus
iii. sand particles
iv. silt particles
Answer:
Humus
Explanation:
Also known as the uppermost layer of soil, that's for making soil more fertile due to its organic content.
Where do convection currents occur atmophere
Answer:
Convection takes place in the atmosphere, in the oceans, and in Earth's molten subcrustal asthenosphere.
Explanation:
Approximately how many mutations occur naturally in DNA per 10,000 bases?
A. 2
B. 2000
C. 200
D. 20
Explanation:
Modern methods indicate that the mutation rate is roughly one to two mutation per 10,000 genes per generation.
In human cells, approximately TWO (2) MUTATIONS occur naturally in DNA per 10,000 bases (Option A is correct).
The mutation rate (u) refers to the occurrence of new mutations in a given nucleotide sequence over time.In human cells, the mutation rate is approximately 10⁻⁴ per generation.Therefore, in a DNA sequence that has 10,000 base pairs of length, this value is equal to 2 mutations per generation (u = 2 / 10,000 = 10⁻⁴).In conclusion, approximately 2 MUTATIONS occur naturally in DNA per 10,000 bases (Option A is correct).
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You look at a cell using a microscope. You see ribosomes and a nucleoid that has one circular chromosome and no surrounding membrane. You do not see any endoplasmic reticulum, mitochondria, Golgi or chloroplasts. From these observations you would conclude you were looking at Group of answer choices
•Differentiate between virus and viroids.
Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids.
Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.
Answer:
Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids. Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.
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..nok nok tera bhai aaya
Which of these is the main cause of habitat fragmentation? O A. Reduction in genetic diversity O B. Migration of mammal species O C. Demand for land use O D. Extinction of bird species
Answer:
C. Demand for land use
Explanation:
Habitat fragmentation usually occurs because of human activities such as new roads, parking lots, and housing developments. Organisms need their specific habitat for survival, and fragmentation is a leading threat to many terrestrial animals.
The human heart weighs how many pounds
After careful consideration your answer is...
Just about 1 pound
*Hope I helped*
~Alanna~
1 lb (pound)
Explanation:
it is the answer.
Why do doctors have to check what blood type a person has before receiving a
transfusion?
0
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with
antibodies against that blood type.
C. Your blood type doesn't matter as long as you get the correct amount of blood in a
transfusion.
O
D. They need to have the same blood type because their DNA must be similar enough to
blend or will cause side-effects and possibly be rejected.
Answer:
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in
Answer:
I think the answer will be protein.
Answer:
the answer is carbohydrates
Does anyone know the answer for 1?
If you have a measurement of 234.005 k, how many significant figures does it have
Answer:
It has 6 sig figs
Explanation:
235.005
Every digit is significant.
Why is the unit of velocity called derived unit?
Answer:
Because it is a vector quantity, it has a direction too such that derived unit is made up of two or more fundamental units. That is mere and second. That is why it is called as a derived unit as its unit is metres per second.
Hope this helps...Have a good day!!
What is one of the causes of mechanical weathering?
A. acid rain
B. oxidation
C. animal actions
D. carbon dioxide
C. animal actions
Others are chemical examples.
state te type of cell devision of cross section tips of onion root.
What is the powerhouse of the cell called?
Mitochondria is called the powerhouse of the cell.
Hope this helps! Have a great day :)
Mitochondria are known as the “powerhouse of the cell.”
Which type of plate boundary would be most likely to lead to above-ground volcanic activity?
A . Subduction
B .divergent
C.collisional
D . Transform
Answer:
A.Subduction
Explanation:
In a subduction zone, one plate slides beneath another. This leads to friction that can melt the crust and result in volcanic activity
Differentiate between communicable and non-communicable diseases. Give one example of each
Answer:
hope this helps helps you a lot
my handwriting is bad sorry for that bhai
What is the correct structure of ATP? A. Ribose sugar, Adenine base, 3 Phosphate groups B. Triglyceride head, Ribose sugar, 3 fatty acids C. Ribose sugar, Phosphate group, Nitrogen Base D. Deoxy Ribsose sugar, Adenine base, 3 Phosphate groups
Answer:
The correct structure of ATP is
A. Ribose sugar, Adenine base, 3 Phosphate groups
Explanation:
The structure of ATP is a nucleotide, consisting of a nitrogenous base (adenine), a ribose sugar, and 3 serially bonded phosphate groups.
can you suggest me some biology experimental project work topics?
Answers:
1. General
2. Reproduction
3. Health
4. Genetic Engineering
5. Technical Experiments on Humans
6. Relationships and Media
7. War
8. Information and Communication Tech
9. Computer Science and Robotics
In the Avery, MacLeod, and McCarty experiment, the transforming extract from virulent bacteria was treated with DNase, RNase, or protease before being mixed with nonvirulent bacteria. The appropriate control for this experiment is to treat the transforming extract from heat-killed virulent bacteria with:
Answer:
Nothing
Explanation:
A. Control variables generally entail little or no system change. To see if the method worked, the researchers required a positive control in which the heat-killed virulent bacteria invariably transformed the non-virulent microorganisms. This positive control involves adding "nothing" to both the heat-killed virulent bacteria before mixing them with the non-virulent bacteria.
Cells in the human body carry out different functions. Which cells help the body fight off diseases and remain healthy? Choose the two that apply.
Why do plant cells have chloroplasts?
Answer:
The chloroplast has chlorophyll and the chloroplasts also helps with makes photosynthesis happen. It takes the suns energy and turns it into energy for the plant. So it uses solar energy and makes chemical energy.
Explanation:
What is the effect of mutated GLMN Gene on the human body?
Answer:
A novel gene , glomulin (GLMN) in which 40 different mutation.
Using the following nucleotide sequence, predict the complementary strand sequence:
5'-TTAAACCCGTTGGAAC-3'
5'-AATTTGGGCAACCTTG-3'
3'-AATTTGGGCAACCTTG-5'
03-CCGGGTTTACCAAGGT-5'
0 3'-TTAAACCCGTTGGAAC-5'
The predicted the complementary strand sequence for 5'-TTAAACCCGTTGGAAC-3' is 3'-AATTTGGGCAACCTTG-5'.
What is DNA?Deoxyribonucleic acid or DNA is a double helix molecule composed of two complementary strands.
According to the base pair rules, Adenine pairs with Thymine and Guanine pairs with Cytosine.
In conclusion, the predicted the complementary strand sequence for 5'-TTAAACCCGTTGGAAC-3' is 3'-AATTTGGGCAACCTTG-5'.
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Answer:
Your answer would be AATTTGGGCAACCTTG-5′
Explanation:
What are the physical characteristics that all specimens have in common
The physical characteristics that all specimens have in common can be presence of cells, as there is no specimen given, let's take animals. A dichotomous key can be used to find the similarity.
What is a specimen?A specimen can be anything that is displayed regarding the subject. In labs the specimens can be chemicals, animals, plants, any objects, etc.
Specimens are displayed to learn about them, to see the actual version of that animal that can not be seen easily.
Thus, Because no specimen is provided, let's take animals as an example, the presence of cells is a trait that all specimens share. To find the similarity, a dichotomous key might be utilized.
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Look at the branching tree diagram below.
A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right with the following traits Four limbs, Amniotic egg, Fur, Shearing teeth, and Retractable claws. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Amphibians, Reptiles, Marsupials, Dogs, Cats.
Which group of organisms evolved after dogs?
Only cats
Only marsupials
Both cats and marsupials
Both amphibians and reptiles
Answer:
both cats and marsupials
Answer: Both Amphibians and Reptiles
Explanation: I took the test and got it, so.....
Carbohydrates info
A. AKA:
B. Composed of:
C. Monomer:
D. Polymer:
E. Functions:
Pls Answer it for 50 points pls What is arsenic???
Arsenic is natural element widely distributed in the earth's crust.
There are two forms of arsenic organic and inorganic.
Symbol: As
Electron configuration: [Ar] 3d¹⁰4s²4p³
Atomic number: 33
Atomic mass: 74.9216 u
Electronegativity: 2.18
Answered by Gauthmath must click thanks and mark brainliest
Is a ping pong ball a nonliving or living thing and why
Answer:
A ping pong ball is nonliving because it does not have a brain or living cells. It is plastic.
Which is a benefit of binomial nomenclature?
1.Fewer common names
2.Increased understanding and communication
3.Reduced plant-related poisoning
4.Better understanding of genetics of plants
