1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
koban [17]
3 years ago
12

1. The body has different types of defences against pathogens.

Biology
1 answer:
lara [203]3 years ago
6 0
2and3 only are the defense
You might be interested in
Help me out with this three please
Vesnalui [34]
1. I’m not really sure how to answer it, i think it’s parasitic
2. The tick is the parasite since the human is the host
3. It’s symbiosis bc it’s a long term biological interaction between two different biological organisms (the human and the tick) and in this case it’s parasitic bc one benefits off the host but it’s harmful towards the host so it doesn’t benefit each member.
Hope that helps :)
4 0
3 years ago
An organism has a metabolic pathway that is controlled by an inducer through negative regulation. When this organism is grown in
beks73 [17]

Answer:

The inducer will combines with the repressor and inactivates the pathway.

Explanation:

Inducer is a term in Molecular Biology, which represent a molecule or substance that has the capability to activate the transcription of a gene, where by it joins with and then inactivates a genetic repressor.

In other words, the inducer binds with the repressor in order to prevent the RNA polymerase to combine to the DNA, and chemically produce mRNA, this is done by repressor proteins combining with the DNA strand.

Inducer specifically makes repressor to change shapes, which will make it not combine with the DNA, and therefore, allow formation of transcription, such that expression of gene will eventually occur.

3 0
3 years ago
Can plants get cancer?
vfiekz [6]
No they can not unlike humans and animal
8 0
3 years ago
A derived trait of land plants is the presence of small openings that allow gaseous exchange between the plant and its environme
mel-nik [20]

Answer:

B. stomata.  

Explanation:

Stomata are openings in the surface of the plant epidermis through which gases and water vapor pass. They are formed by two elongated cells whose shape is similar to bean grain or dumbbell depending on the species.  These cells are called guard cells, and in their midst there is a slit called the ostiole.

The stomata make the exchanges between the external and internal environment of the plant. They regulate the size of the opening, so it is possible to increase or decrease the rate of perspiration of the plant.

Stomata are usually located at the bottom of the leaf, but in aquatic plants such as the water lily they are at the top and still in vertical growing plants on both sides.

6 0
3 years ago
Which of the following are functions of the sinuses? (Select all that apply.)
Tanya [424]

Answer: D,C

Explanation:

7 0
2 years ago
Other questions:
  • Which is an example of the bottleneck effect?
    7·1 answer
  • I have a few questions I'm having trouble with, maybe if you guys could please help me out, thank yoo~! ^w^
    5·1 answer
  • In mice, the Sry gene is located on the Y chromosome very close to one of the pseudoautosomal regions that pairs with the X chro
    10·1 answer
  • The equation shows cellular respiration. During cellular respiration, glucose combines with oxygen to form carbon dioxide,
    6·1 answer
  • What is earths crust?
    12·2 answers
  • 2 An astronaut has a mass of 70 kg.
    7·2 answers
  • Can people change the world for the better
    14·2 answers
  • Anything that is built or created in an organized manner
    7·2 answers
  • Describe an environmental factor that could
    15·2 answers
  • Aspirin may still irritate the stomach as a side effect. What functional group in the molecule is responsible for this effect
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!