Answer:
The cell membrane acts as a barrier that protects the cell from the external environment and it regulates the movement of the particles or substances in and out of the cell.
Every year, many people get sick from the common cold. While there are medicines that can help with the symptoms, there is nothing that can cure or prevent a cold. What kind of pathogen causes the common cold?
A. Bacterium
B. Fungus
C. Parasite
D. Virus
Answer:
D. Virus
Explanation:
based on this website: https://www.hopkinsmedicine.org/health/conditions-and-diseases/common-cold#:~:text=What%20causes%20the%20common%20cold,the%20rhinoviruses%20causes%20most%20colds.
Common colds are caused by various kinds of viruses. Rhinoviruses cause most colds.
Which of the following statements about pathogens is NOT true?
(A) Viruses can be treated with antibiotics.
(B) Parasites take nutrients from the host while harming the host.
(C) Fungi can invade and successfully live in or on the human body.
(D) Any species of bacteria is capable of causing disease in the body.
Answer:
A. Viruses can be treated with antibiotics.
Explanation:
For most viral infections, treatments can only help with symptoms while you wait for your immune system to fight off the virus. Antibiotics does not work for viral infections. There are antiviral medicines to treat some viral infections. Vaccines can help prevent you from getting many viral diseases.
Which sequence best describes asexual reproduction?
Answer:
A
it's A BECAUSE ASEXUAL ONLY NEEDS ONE PARENT
Answer:
A
Explanation:
How can tornadoes and/or thunderstorms impact human, plant, or animal life?
Answer: Tornadoes effect the environment by destroying buildings and trees. Tornadoes also kill animals, which effects the food chain and disrupts the whole environment. Tornadoes destroy our farms, which means there will be food shortages around the surrounding area. After everything is destroyed, humans have to rebuild. Tornadoes can cause water contamination, which poses a serious problem, as plants, animals and humans are effected by this. Debris can be very dangerous, as it could kill plants and animals very easily. Some trees take over 100 years to grow, so if they are destroyed, they will be hard to replace. Fires may occur after a tornado due to damaged power lines and gas leaks. Fire contributes to global warming by giving off carbon dioxide into the atmosphere. Because of man-made global warming, scientists believe that there will be an increases in tornadoes and other severe weather.
Explanation: Good luck!
- 7th Grade Work -
Describe the flow of energy in a marine food web.
Include at least 5 organisms.
Please answer only if you actually have an answer, no links.
Answer:
The flow of energy in a marine food web include the following:
Plankton⇒shrimp⇒ salmon⇒ seals⇒ whales
In the marine ecosystem, the plankton which are plants are the primary producers while the whales are the tertiary/quaternary consumers as they are at the top of the web.
What is a food web?
A food web comprises of food chains which are interconnected and also
