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
OleMash [197]
2 years ago
7

Describe the motion of paramecia

Biology
1 answer:
anastassius [24]2 years ago
8 0

Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove, and inside the mouth opening. The food passes through the cell mouth into the gullet.

You might be interested in
What your favorite marvel movie and character
KIM [24]
Have you ever seen the Ghost Rider
5 0
2 years ago
What is parthenogenesis? give an example
ANEK [815]

Answer:

It's a form of asexual reproduction!

Development of the offspring happens without fertilization in this type of reproduction.

The two main ways in which parthenogenesis happens is by apomixis or automixis. Through apomixis , the egg cells are produced by mitosis. Through In automixis, egg cells are produced by meiosis.

Mitosis = a part of cell cycle: replicated chromosomes are separated into 2 nuclei

Meiosis = type of cell division that reduces the chromosome number by half. So now there is four haploid cells that are  genetically distinct from their parent cell.

Example:

An example of an animal that can use this reproduction is a bonnethead shark! Once a shark had a baby in a tank that only had three females!

(read about that on wikipedia)

3 0
3 years ago
True or false? B cells were originally isolated from the bursa in chickens
Maru [420]

Answer:

True

Explanation:

B cells are B lymphocytes and are one of the types of white blood cells. Their main role is in the acquired immune system in which they help in the humoral immune response of the body by the secretion of antibodies. The maturation of the B cells occurs in the bone marrow in mammals. But in birds, these cells mature in an organ named bursa of Fabricius which is a lymphoid organ in birds. These B cells were first isolated form the bursa of Fabricius of the birds.

7 0
2 years ago
The order Cetacea includes modern-day whales, dolphins, and porpoises. These marine mammals share common characteristics that ha
SVETLANKA909090 [29]

Answer:

The correct option is A. they evolved from land mammals.

Explanation:

Evolution can be described as a process through which organisms in a species change over a period of time due to the natural selection of the environment. Those organisms that have many similarities in their functions or structures are considered closer to one another and have the same common ancestors.

The properties mentioned in the question about cetaceans resembles the properties of land mammals. For example, cetaceans lack gills and breathe air. Land mammals also do not have gills and need to respire for living. The cetaceans have fin bones which are similar to the limb bones in the land mammals. Hence, these observations show that cetaceas have evolved from land mammals.

8 0
3 years ago
Hello yall! I was wondering if yall could help me with these problems!
Gala2k [10]
C,d,e .................
5 0
2 years ago
Read 2 more answers
Other questions:
  • What is considered a pre existing medical condition?
    15·1 answer
  • A stand of Douglas fir trees is home to 3 similar species of small insect-eating birds. They eat a variety of insect species: on
    7·1 answer
  • Where would you most likely find transform boundaries on an earthquake distribution map?
    9·2 answers
  • Define and explain the difference between dependent and independent variables
    9·2 answers
  • Which two structures would provide a positive identification of an animal cell under a microscope?
    8·2 answers
  • Why are adult stem cells important?
    5·1 answer
  • Meaning of onion epidermal cell​
    8·1 answer
  • What base in RNA pairs with adenine?<br> uracil<br> guanine<br> cytosine<br> thymine
    7·1 answer
  • How is DNA (deoxyribose nucleic acid) different than RNA?
    11·1 answer
  • During meiosis, crossing-over may occur. What is usually the result of crossing-over?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!