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
stellarik [79]
3 years ago
14

Need help on this please!!!

Biology
1 answer:
yanalaym [24]3 years ago
6 0

Answer:

1. D

2. G

3. C

4. A

Explanation:

An endothermic reaction is one that absorbs or uses heat energy. Its polar — er thermal — opposite, exothermic describes a reaction that makes or gives off heat. It can be easy to confuse the two, but if you can remember that endo means “in” and exo means "out,". Ectotherm, any so-called cold-blooded animal—that is, any animal whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface. The ectotherms include the fishes, amphibians, reptiles, and invertebrates.

Larger animals can keep their heat for a longer time than smaller animals. A small animal has a greater surface area for its size compared to an adult animal. That is why small animal, as well as a baby, is more prone to heat loss. Larger animals can keep their heat for a longer time.

You might be interested in
HELP ME PLEASE I BEG YOU I RELLY NEED IT URGENT !!!! 15 points!
levacccp [35]
The easiest example here is a computer/laptop... e.g. when the CD-ROM is spinning when you are perhaps playing a movie, the kinetic energy causes friction, which results in heat.  All computers need a fan to prevent them over-heating for this very reason.  Therefore heat is lost and energy is wasted.

Another example is a lightbulb.  When a light is switched on and left for a long time, the current flowing through the filament (the thin bit of wire in the bulb) causes heating (due to electron-ion collisions but you may not need to know that) so energy is wasted as thermal energy instead of light energy.

These are just a few examples but other ones you could use are tv screens, kettles, toasters, etc :)
5 0
3 years ago
TLRs are Group of answer choices the coatings of pathogens by complement. present in intact skin, sebum, tears, etc. phagocyte r
densk [106]

Answer: Phagocyte receptors that detect PAMPs

Explanation:

TLRs or Toll-like receptors, are a family of proteins that are part of the innate immune system. TLRs are transmembranous and recognize pathogen-associated molecular patterns (PAMPs), which are groups of chemical characteristics common to certain types of pathogens. Patterns detected by TLRs include lipopolysaccharide, a compound found on the surfaces of Gram-negative bacteria, and double-stranded RNA, which is an integral part of the life cycles of many viruses. These PAMPs are generally important for the survival of the pathogen, so they are well preserved. <u>Activation of these receptors induces inflammatory responses in leukocytes of myeloid lineage, signaling via NF-κB, which is a transcription factor that activates pro-inflammatory genes</u>. Activated TLRs also increase the production of co-stimulatory molecules such as CD80, CD86 and CD40. These proteins, expressed on the surface of antigen-presenting cells, are necessary for the activation of T-lymphocytes by dentritic cells and macrophages already showing antigens in their MHC type II molecules (Major Histocompatibility Complex, they participate in the presentation of antigens to T lymphocytes)

<u>In addition, TLR-mediated signaling on antigen-presenting cells (APCs) plays an important role in linking the innate and adaptive immune responses</u>.

5 0
3 years ago
How many cell(s) are there at the start of mitosis?
saw5 [17]

Answer:

There are two cells produced in the process of mitosis.

New cells are formed by the process of cell division.

Yes, Cells made during mitosis are identical.

Mitosis is the process in which two daughter cells are produced during cell division.

Phases of mitosis are prophase, metaphase, anaphase, and telophase.

Prophase is the longest phase in which chromatin condenses chromosome.

In metaphase chromosome are separated from each other.

Anaphase is a phase in which daughter chromosome move toward the pole.

In telophase, the cell is divided into two daughter cells.

Two daughter cells are produced during mitosis.

Cytokinesis is a process in which cytoplasm of the cells is divided into two.

6 0
3 years ago
HELP ME CJDUCIF PLEASE I WILL MARK BRAINLIST
mr Goodwill [35]

Answer:

1950 - 1970

Explanation:

in order to increase food production, alleviate extreme poverty and malnourishment in the country, and to feed millions

3 0
2 years ago
What is true in a saturated solution
Tom [10]
It can't dissolve any more solute. 

5 0
3 years ago
Other questions:
  • what creates more pressure check all that apply A.going to a lower altitude B.Gases with less kinetic energy C.Gas molecules mov
    11·1 answer
  • What strand of dna is used to make a complementary copy or to make a complementary mrna molecule?
    11·1 answer
  • An individual with (naturally) curly hair and an individual with (naturally) straight hair mate, all of their offspring have (na
    6·1 answer
  • What method would be best for scientists to use to determine the absolute age of a Precambrian igneous rock
    10·1 answer
  • In response to seasonal changes in temperature, many organisms must alter the composition of their plasma membranes to maintain
    7·1 answer
  • Jellyfish, crayfish, and octopi all have a specialized cell in common. This cell helps the organism determine if it is right-sid
    7·1 answer
  • Which is NOT true about the macromolecule pictured?
    8·1 answer
  • Coal was formed from the remains of ferns, trees, and grasses that grew in swamps over 300 million years ago. The plants
    12·1 answer
  • Girls often have better developed fine motor skills until ____. (fill in the blank)
    12·1 answer
  • Individuals in a population that have traits or abilities that give them a competitive advantage over other population members a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!