BIOLOGY HIGH SCHOOL

Inserting recombinant DNA into a host genome produces a (blank) organism.A. Transgenic
B. Diploid
C. Inbred
D. Hybrid

Answers

Answer 1
Answer: A. Inserting recombinant DNA into a host genome produces a transgenic organism.

Related Questions

Mangrove pneumatophore roots _______.
A researcher wants to test how diets A and B affect the weight loss of rabbits. She has 20 rabbits to use, but all of the rabbits are different sizes, which might affect how much weight they lose. The researcher decides to group the four smallest rabbits in one group, the next four smallest rabbits in another group, etc., until the final group has the four largest rabbits. Then, from each group she randomly selects two rabbits to have diet A, and the remaining rabbits in the groups have diet B.Select all that apply:A. This is an example of a block design.B. This is an example of a completely randomized experimentC. This is an example of a matched pairs experiment.D. The treatments are diets A and B.E. The treatment is how much weight a rabbit loses.F. The experimental units are the 20 rabbits.G. The experimental units are diets A and B
Nervous control of gastric secretion is provided by ________. A. the rubrospinal tracts B. the reticulospinal and vestibulospinal tracts C. somatic neurons in the spinal cord D. the vagus nerve and enteric plexus
Which of the following is not considered a fossil fuel?a. Coal b. Crude oil c. Natural gas d. Nuclear energy
Another name for false productivity

Fungi or either ___ or ____

Answers

Answer:

Fungi are either saprophytes or parasites.

Fungi are parasites on the living organism. They live in the body of the host cell and gets nutrition from the host body. The Fungus Septobasidium is parasitic in nature and feeds on the tree. They form the mycelium that feeds on the bark of the trees.

Some of the fungus show saprophytic behavior as they feed on the dead and decaying matter of prey and they release the digestive enzymes outside the body and absorb the digested food(nutrients) inside their body.

Scientists can estimate the number of bacteria in a refrigerated food using the formula 0.2b=t^2/20 where b is the number of bacteria and t is the time in seconds. What was the approximate time a food was in the refrigerator if there were 625 bacteria?A. 30 seconds
B. 40 seconds
C. 50 seconds
D. 60 seconds

Answers

As we know the formula that is
0.2b = t^2 / 20
so by putting values
0.25[625=t^2 / 20
125=t^2 / 20
so 125*20=t^2 
t=50 by taking square root
so correct option is C 
hope it helps

Oxygen was introduced into the atmosphere as a byproduct of a. respiration. c. dehydration. b. photosynthesis. d. osmosis.

Answers

Answer: b. photosynthesis.

Explanation:

Photosynthesis is a  chemical reaction that occurs in the cells of the plant leaves. The process requires carbon dioxide from the atmosphere and water as reactants. These reactants get converted into carbohydrates (glucose) and oxygen as byproducts in the presence of sunlight. For the first time on earth the oxygen was produced by the photosynthesizing cyanobacteria. As these organisms used to fix carbon dioxide in water.

Therefore, oxygen was introduced into the atmosphere as a byproduct by the process of photosynthesis.  
Photosynthesis  asdfsfdnaflkjns
 

All organisms begin life as a ________ cell. a)embryonic
b)haploid
c)larval
d)single

Answers

The answer is D.Single
D) Single, i hope this helps >>

Telomerase Indicate whether each of the following statements about telomerase is true or false. 1. With each cell division, chromosomes gradually shorten in the absence of telomerase activity. TrueFalse 2. During embryonic and childhood development in humans, telomerase activity is relatively low compared to the level of activity in most somatic cells of an adult. TrueFalse 3. Cells that divide frequently tend to have relatively low levels of telomerase. TrueFalse 4. The activity of telomerase in most mature somatic cells is kept high by increasing the expression of the gene encoding this enzyme. TrueFalse 5. Mice with low telomerase activity appear to be normal for up to six generations, but they show steadily decreasing telomere length that eventually leads to nonviable offspring. TrueFalse 6. When telomerase is added to cells grown in culture, their lifespan decreases relative to controls that have no telomerase added. TrueFalse 7. Cancer cells generally have high levels of telomerase activity, which allows them to divide indefinitely without the chromosomes getting shorter and shorter. TrueFalse

Answers

Here are the answer for each item.
1. With each cell division, chromosomes gradually shorten in the absence of telomerase activity (FALSE)2. During embryonic and childhood development in humans, telomerase activity is relatively low compared to the level of activity in most somatic cells of an adult. (FALSE)
3. Cells that divide frequently tend to have relatively low levels of telomerase.(FALSE).
4. The activity of telomerase in most mature somatic cells is kept high by increasing the expression of the gene encoding this enzyme. (FALSE)
5. Mice with low telomerase activity appear to be normal for up to six generations, but they show steadily decreasing telomere length that eventually leads to nonviable offspring. (FALSE)
6. When telomerase is added to cells grown in culture, their lifespan decreases relative to controls that have no telomerase added. (FALSE)
7. Cancer cells generally have high levels of telomerase activity, which allows them to divide indefinitely without the chromosomes getting shorter and shorter. (TRUE).

Homework due tonight, please help!List the four types pf stem cell, give an example of each type, and explain how much each type can differentiate.

Answers

Answer:

Totipotent - Able to differentiate into any type of cell of the human body or of the placenta. For example, fertilized egg cells and the cells from the egg’s first few divisions.

Pluripotent - From totipotent cells, able to differentiate into almost any type of cell of the human body. For example, blastocyst cells

Multi potent - Can develop into more than one type of cell, but more limited than pluripotent cells. For example adult stem cells and cord blood stem cells

Unipotent - Can only differentiate in a single lineage. Skin cells are the most abundant type of these.
Embryonic stem cell- are harvested from the inner cell mass of the blastocyst seven to ten days after fertilization. 

Fetal stem cell- are taken from the germline tissue that will make up the gonads of aborted fetuses.

Umbilical cord stem cell- umbilical cord blood cells contain stem cells similar to those found in bone marrow. 

placenta derived stem cells- up to ten times as many stem cells can be harvested from a placenta as from cord blood

Adult stem cell- many adult tissue contain stem cells that can be isolated
Other Questions
A human skin cell contains 46 chromosomes. Afrog sperm cell contains 12 chromosomes.Which pair of numbers shows the chromosomenumber of a normal gamete from each of thesespecies?(1) human 46; frog 12 (3) human 23; frog 24(2) human 46; frog 24 (4) human 23; frog 12
In the previous activity, you chose an animal that interested you and listed three examples of innate behavior and three examples of learned behavior for that animal. Now research what, if any, courtship and mating rituals this animal has. Explain why you think it has or doesn’t have these behaviors.
Ecosystems are in danger from all of the following except __________.a. increased thermal pollution b. decreased eutrophication c. increased air pollution d. oil spills
When are traits most likely to be passed on to the next generation