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
enot [183]
3 years ago
15

Scientific theories, such as the theory of evolution, must be

Biology
2 answers:
S_A_V [24]3 years ago
6 0
B) testable and observable
elena-14-01-66 [18.8K]3 years ago
5 0
B observable and testable
You might be interested in
I eat insect and frog eats me how am I​
mrs_skeptik [129]

Answer:

mosquitoe maybe or larva

3 0
3 years ago
Which food is at a temperature that allows bacteria to grow well ? A) a roast at 125•F (52•c) B) hamburgers at 165•f (74•c) C) p
Lilit [14]

The correct answer is A) A roast at 125°F (52°C)

Explanation:

In general terms, bacteria thrive at warm temperatures; this means bacterial growth is lower at extremely hot/cold temperatures, but it is higher at warm or medium temperatures. Indeed, the ideal temperature for bacteria to develop and reproduce is between 4° C and 60°C. This implies from the options given the roast at 52°C represents an ideal temperature for the growth of bacteria. Also, other options include temperatures above 60°C, and therefore do not allow bacteria to grow well.

4 0
3 years ago
HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!<br> What kind of signals occur in the brain?
marin [14]

Answer:

there are all kinds of signals occur in the brain

Explanation:

Hope this help not sure if it is the right answer

5 0
3 years ago
Read 2 more answers
16-16: In a series of experiments, genes that code for mutant forms of an RTK are introduced into cells. The cells also express
kolezko [41]

Answer:

Kinase-connected receptors or receptor tyro-sine kinases react for the most part to protein and chemical go between. A solitary trans membrane helix interfaces the extracellular restricting area to the intra-cellular space. e.g. insulin, development factors. The official of the ligand triggers the commencement of a few succession of occasions related with phosphorylation of proteins, this is called protein kinase course.  

For instance, the official of development hormone to the receptor in the plasma layer causes dimerization (by the actuation of Janus kinase 2, JAK2) of the receptor (conformation change) that bring about auto-phosphorylation of tyro-sine buildups. The official of SH2-space (src homology) protein (Grb-2) to the phosphorylated tyro-sine buildups invigorates cell development through a course of protein phosphorylation.  

a). RTKs are the trans-membrane receptors, which have a ligand restricting site on the extracellular area and tyro-sine authoritative on the intra-cellular space. In the event that it comes up short on the extracellular area, the ligand can't tie to the receptor site, so no cell reaction happens.  

b). On the off chance that it does not have the intra-cellular space, the ligand can tie to the receptor site, the receptor can't impart signs tot eh intra-cellular area because of the absence of intra-cellular space.

5 0
3 years ago
Read 2 more answers
The dichotomous key (ERGENT HELP)
kolezko [41]

Answer:

D. asks multiple questions about how organisms behave and act.

6 0
3 years ago
Other questions:
  • The study of the absorption of light by chemical substances is known as
    7·1 answer
  • Which layer best represents the mantle?<br>A. 1<br><br>B. 2<br><br>C.3<br><br>D.4
    5·1 answer
  • Which process is characterized by the movement of particles from an area of a high concentration to an area of low concentration
    10·2 answers
  • Why are the bird at midway
    10·1 answer
  • What elements make up carbohydrates and lipids?
    8·2 answers
  • A structure outside the plasma membrane in some cells is the _____
    12·1 answer
  • Use the diagram below to answer questions 3 and 4
    9·1 answer
  • Explain why lemon juice cured sailors but boiled lemon jucie didnt​
    15·1 answer
  • Which of the following is true about a sea stars DNA? A. All of the cells of the sea star have different DNA that allows it to g
    6·1 answer
  • Where is retinal found?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!