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
ycow [4]
3 years ago
9

What type of microscope would a biologist use to study sub-cellular structures?

Biology
2 answers:
kipiarov [429]3 years ago
8 0
Answer Electon microwave
bogdanovich [222]3 years ago
6 0
Electron microscope
You might be interested in
7
love history [14]

Answer:

hey are you a Belieber???

7 0
3 years ago
How do false killer whales help mankind and nature!!!!!???????
denis-greek [22]

Whales play an important role in the marine ecosystem where they help provide at least half of the oxygen you breathe, and they also improve climate change. Hope that helps.

7 0
2 years ago
Several bodily responses are described below. For each response, determine what caused the change in
EastWind [94]

Answer:

  1. Body starts to sweat: The core body temperature exceeded the set range of 35 degrees to 41.5 degree celsius
  2. Breathing rate increases: Cells are not receiving adequate oxygen to produce adequate energy.
  3. Amount of saliva produced changes: Saliva is produced in response to pH changes in the mouth or the intake of food.
  4. Body starts to shiver: Core temperature dropped below the set range of 35 to 41.5 degree celsius.

Explanation:

Homeostasis:

Homeostasis is the physiological process of regulating the internal environment of the body against fluctuations in the external environment.

Homeostasis systems in the body follow the following basic scheme (from 1 to 4):

  1. Stimulus
  2. Sensor
  3. Control
  4. Effector

Various control centers in the body sense varying body conditions and in turn activate certain effector mechanisms to regulate the changing conditions.

Thermoregulation:

  • Thermoregulation is the control and regulation of the optimum core temperature of the body between the range 35 to 41.5 degree celsius.
  • The control center is the hypothalamus, a part of the brain that receives signals from receptors in the body and initiates the appropriate response.
  • If the core temperature exceeds the optimum range, two mechanisms are initiated:
  1. The blood vessels towards the skin and extremities dilate, increasing the blood flow, allowing heat loss to the environment.
  2. Sweat glands are activated, evaporation of sweat produces a cooling effect.
  • If the core temperature decreases, again, two mechanisms are activated:
  1. Blood vessels to the extremities constrict to prevent heat loss; those towards the core dilate to provide maximum heat to the internal organs.
  2. Shivering mechanisms (involuntary muscle contractions) are activated that generate heat.

Respiratory Homeostasis:

During exercise or strenuous physical activity, our cells need to produce a large amount of energy through cellular respiration. Since, cellular respiration requires oxygen, more and more oxygen needs to be supplied to the cells. A low oxygen signal detected by the hypothalamus (control center in the brain) increases the breathing rate to ensure that sufficient oxygen reaches the cells.

Oral homeostasis:

The salivary glands maintain the homeostasis of the oral cavity. Saliva is not produced in response to food but to maintain the pH of the oral cavity to protect the teeth and enamel. Saliva contains the enzyme amylase which digests carbohydrates in the mouth. Therefore, the production of saliva increases in response to smell, sight and taste of food.

8 0
3 years ago
Read 2 more answers
How do changes to genes affect the traits of an organism
nikdorinn [45]

Answer:

Changes (mutations) to genes can result in changes to proteins, which can affect the structures and functions of the organism and thereby change traits. sexual reproduction, genetic information can be altered because of mutations. Though rare, mutations may result in changes to the structure and function of proteins.

4 0
2 years ago
Read 2 more answers
An organism that produces its food by photosynthesis _____.
HACTEHA [7]

Answer: The correct answer for the fill in the blank is- May be placed in the Plantae kingdom.

An organism that produces food by photosynthesis can belong to three kingdoms that are Monera ( example- cynobacteria) , Protista ( example- algae) and Plantae ( example- green plants).

Thus, it is not necessary that the organism must be placed in Plantae kingdom as it may belong to any of these three.

Organisms belonging to Animalia kingdom do not perform photosynthesis.

Thus, second option is the right answer.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is our scientific name and what does it mean?
    8·1 answer
  • The cardiac cell at rest has what kind of electrical charge?
    5·1 answer
  • The disappearance of a species from all or some of its geographical range is called
    6·1 answer
  • At the ends of muscles, the connective tissues merge to form a __________, which attaches the muscle to other structures.
    6·1 answer
  • If a small child were to release a balloon into the atmosphere, what would happen to the size of the balloon as it makes it way
    6·2 answers
  • The purpose of the coenzymes nad and fad is to carry blank ions to the stage of respiration called blank
    6·1 answer
  • Which describes the role of decomposers in the carbon cycle?
    15·2 answers
  • Which of the following statements is FALSE?
    11·1 answer
  • What are some ways to keep your bones healthy?(name atleast 3)
    7·1 answer
  • Which is a source of adult stem cells?<br> bone marrow<br> amniotic fluid<br> embryos<br> gametes
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!