A test cross can be used to _____.A. predict the phenotypes of a monohybrid cross
B. predict an unknown genotype of a purebred dominant plant
C. cross-breed dominant and recessive plants
D. give probabilities that a trait will appear

Answers

Answer 1

Answer: i do believe the answer is c

Answer 2

Answer: the answer is "c" i did the same question last week on my online test and i got that right

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thick, smooth muscle located at the junction of the bladder and urethra that aids in pushing stored urine into the urethra is called the: group of answer choices external urethral sphincter. internal urethral sphincter. urinary sphincter. medial urethral sphincter.
Is an Aardvark an Invertebrate, Chordate, or Vertebrate?
What is the advantage of genetic recombination as a mode of reproduction in bacteria? less time finding other bacteria higher rates of reproduction more susceptibility to antibiotics greater genetic variation
Neural signals from olfactory cilia are transmitted to the __________ and then transmitted to the __________ and other areas of the brain.
Drinking water helps your body maintain

The Earth's biodiversity is determined by the variety of all living organisms on Earth. In recent years, ecologists and other scientists have encouraged the preservation of global biodiversity through the protection and management of natural ecosystems.Preserving the biodiversity of the Earth is important because
A. biodiversity increases ecosystem stability for a given type of ecosystem.

B. ecosystems are highly interconnected and the removal of even a few species can cause ecosystem disruption.

C. the diverse organisms of Earth's ecosystems provide services for humans that humans cannot replicate.

D. all of these

Answers

The answer is D because all of them are true. Biodiversity stabilizes an ecosystem, they are highly interconnected, and we can not replicate many forms of life.

Answer:

Answer choice D

What would happen to other organisms if prokaryotes did not recycle nutrients?

Answers

Answer:

The organisms like prokaryotes acts as decomposers of the environment and and they recycle nutrients back into the soil.

These nutrients are taken back from the soil by the plants (Eukaryotes) and then from plants these nutrients are transferred to the other animals.

So, of the prokaryotes will not recycle the nutrients back into the soil, then it will not be available to the other organisms as food.

Where do most producers get their energy from?a. from the water
b. from the sun
c. from other organisms
d. from the air

Answers

Answer: b. from the sun

Explanation:

Most of the producers are the plants and other autotrophic organisms that obtain their energy from the light energy of sun. These organisms use the light energy from sun to convert this energy into chemical energy of food by the process of photosynthesis. In the absence of sunlight energy photosynthesis will not occur. The ingredients like water and carbon dioxide are used to produce oxygen and carbohydrates in the presence of sunlight.

The answer is b, because all energy comes from the sun which then goes to the autotrophs( producers) who make there food, and then the omnivores eat the autotrophs and the carnivores eat the omnivores or anything that consists of meat.

Bottleneck events are always caused by the death of most of a species’ population. Please select the best answer from the choices provided T F

Answers

False. Bottleneck events are caused when size of a population sharply declines, and there are multiple causes of this decline. Often it involves the death of most of a species' population, for example, following a natural event, such as an earthquake or famine, or as a result of human behaviour, such as genocide. However, it can also be as a result of a separation event or mass migration during which the majority of a species does not die.

Answer:

false

Explanation:

The major distinguishing difference between antiseptics and disinfectants is __________. the major distinguishing difference between antiseptics and disinfectants is __________. antiseptics are not affected by the presence of organic matter antiseptics can be used on living tissue disinfectants work well on biofilms disinfectants can be used on living tissue

Answers

Answer:

Antiseptics can be used on living tissue disinfectants work well on biofilms

Explanation:

Both antiseptics and disinfectants kill bacteria and inhibit their growth. However the big difference between the two is that antiseptics are used on living tissue such as skin while disinfectants are used on inanimate substances like the table tops of hospitals. Disinfectants usually have biocides that are not safe to apply on skin, mucous membrane, and tissue due to their toxicity. An example of an antiseptic is iodine while an example of disinfectant is Lysol.

A person can be immunised against a disease by injecting them with an inactive form of a pathogen.explain how this makes a person immune to the disease in a paragraph
(ill mark u brainlist)

Answers

Hey There!

_____________________________________

Answer:

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$\Large\textbf{ACTIVE AND PASSIVE IMMUNITY}$

Active Immunity, Immunity which is acquired by the own immune response of the body.

Passive Immunity, Immunity which is acquired and dependent upon the antibodies transported from another person or even an animal. A person's immune system does not acquire or make the antibodies itself. A newborn baby acquires passive immunity from its mother through the placenta.

x---------------------------------------------------x

$\Large\textbf{Vaccination:}$

Vaccination is a artificial active immunity. Artificial because the antibodies are not acquired by any natural infection but it is injected into the healthy body of the person. It is Active immunity because the body does not get already made (from other animal) antibodies but it acts on the small amount of the pathogen which is injected in the body and acquires the antibodies itself. So the person acquires antibodies naturally acting on the antigen. Antigen is any foreign agent which triggers the immune system to produce antibodies against it. Vaccines contains antigen which is a harmless form of the bacteria or a virus that causes the disease you are being immunised against. The bacteria or virus are in small proportion and greatly weakened in the vaccine so they just trigger an immune response without causing any real damage. When Vaccine is injected in the body, the immune system starts to make antibodies of different forms against the antigen(Virus or bacteria in the vaccine). When the appropriate shape antibody reacts with the antigen and forms antibody-antigen complex which destroys the antigen. This means that type and shape of antibody is perfect to work against that antigen, then the immune system start forming only those kind of antibodies in great proportion and the Person gets immunised by the vaccine in a natural way.

_____________________________________

Best Regards,

'Borz'

a vaccine works by training the immune system to recognize and fight pathogens, either viruses or bacteria. so certain molecules from the pathogen must be introduced into the body to trigger an immune response. so basically your not really immune your body will just know how to deal with it

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