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
insens350 [35]
3 years ago
15

How do you describe that cells are the basic units of structure to a 7 year old?

Biology
2 answers:
Andreas93 [3]3 years ago
7 0
Show how little things make up bigger things and a microscope or images of microscopic things.
Leno4ka [110]3 years ago
4 0
Use small building blocks and tell them that the smaller blocks are the cells and tell them to make a bigger item with the small building blocks.
You might be interested in
How is the flow of energy through a community different from the cycling from the matter?.
Paha777 [63]
Matter can be recycled, but energy cannot. Also, only 10% of the energy is passed through each trophic level.
4 0
3 years ago
The atomic number of an element is the same as the number of _________ in each atom.
muminat
Neutrons plus protons
4 0
3 years ago
How does oxygen move through the blood?
Bond [772]

Answer:

Attached to hemoglobin.

Explanation:

The oxygen is important for the cellular functioning of cell. The carbon dioxide must be move out of the cell and oxygen should reach to each and every cell of the body.

Hemoglobin molecule has the ability to binds with the four molecules of oxygen. The oxygen moves in the body by binding with the hemoglobin molecules present inside the red blood cells.

Thus, the correct answer is option (a).

3 0
3 years ago
Does geographic distance between salamander populations increase their reproductive isolation? To answer this question, research
Nataly_w [17]

Question: Does geographic distance between salamander populations increase their reproductive isolation?  To answer this question, researchers studied populations of the dusky salamander (Desmognathus ochrophaeus) living on different mountain ranges in the southern Appalachian Mountains.  The researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. Four mating combinations were tested for each pair of populations (A and B)—two within the same population (female A with male A and female B with male B) and two between populations (female A with male B and female B with male A).  The proportion of successful matings for each mating combination was measured. For example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. Then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). The reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (AA + BB) minus the sum of the proportion of successful matings of each type between populations (AB + BA).

The table (Figure 1) provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Part A - Understanding experimental design

What hypothesis did the researchers test in this study?

Answer:

"Reproductive isolation increases with geographic distance between dusky salamander populations"

Explanation:

The mechanisms of reproductive isolation are a assemblage of evolutionary mechanisms, behaviors and physiological procedures dangerous for speciation. They avert followers of dissimilar types from manufacturing offspring, or confirm that any offspring are germ-free. While in allopatric speciation the reproductive isolation is resolute superficially by the spatial isolation of populations, during sympatric speciation specific groups of persons create distinct mating organizations with self-like persons while distribution the similar home with the rest of the unique inhabitants.

3 0
3 years ago
The diagnostic test for HIV, the virus that causes AIDS, involves testing the blood for antibodies with this pathogen. Antibodie
Elden [556K]

Answer:

Detects foreign antigens

Explanation:

Antibodies are the defense cells of the body. They are produced by the white blood cells and help in fighting and killing foreign bodies which are known as antigens. The antibodies attacks the antigens by binding onto it and releasing chemicals to kill it or by engulfing the foreign body( antigen).Examples of antibodies are IgA and IgG.

8 0
3 years ago
Other questions:
  • Why do our cells need to transfer ATP into energy?
    13·1 answer
  • Which of the following allows a cell to become specialized?
    9·1 answer
  • Some snake venoms are harmful because they contain enzymes that increase the rate of a reaction that destroys blood cells and ti
    15·1 answer
  • Why can the complex sugar cellulose store more energy than the sugar glucose?
    7·1 answer
  • Why do seeds germinate better in composted soil
    10·1 answer
  • Plant native to the chaparral would be expected to
    12·2 answers
  • Which makes bacterial infections difficult to defeat?
    6·1 answer
  • What plate tectonic features are most likely to occur when earths plates move away from each other
    10·1 answer
  • Which ranks the solutions from the strongest to weakest acid
    11·2 answers
  • Can some one help me :(.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!