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lozanna [386]
3 years ago
5

Which movement of substances through a cell membrane against a concentration gradient requires energy?

Biology
1 answer:
Alja [10]3 years ago
3 0

Answer:active transport as it's difinition state

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Name the element that has the following number of particles 26 electrons 29 neurons 26 protons
inessss [21]

the answer is iron(Fe)

7 0
3 years ago
Which of the following phenotypic classes reflect offspring that were generated as a result of a recombination event?
babymother [125]

Answer:

The correct options are: A " vestigial wings, red eyes" and D "full wings, purple eyes"

Explanation:

female parent: vg+pr+/vg pr

(phenotype - full winged and red eyes)

male parent:  vgpr/vgpr

(phenotype - vestigial winged and purple eyes)

Of these traits, vestigial wings and purple eyes are recessive traits. Hence, when a recombination event occurs, the offspring can potentially have a wild type trait paired with a recessive trait.

6 0
3 years ago
What is the term for each step in the transfer of energy and matter within a food web?
Artist 52 [7]
The term is known as TROPHIC LEVEL...........
7 0
3 years ago
What is indicated by two species having similar amino acids in the hemoglobin protein?
Anna71 [15]
Answer: The two species were Rhesus monkey and Human <span>
Hemoglobin protein is the iron containing protein found in the red blood cells which function by transporting oxygen through the blood stream from from the lungs to the tissues and it is important for survival. However, the  two species that have similar amino acids in the hemoglobin protein were Rhesus monkey and Human because they were not far from others.</span>
3 0
3 years ago
Think of a change that can occur to an ecosystem and the populations that live in that area. In what ways can the different popu
Alex73 [517]

Answer:

There are several environmental factors that causes changes in the ecosystem and the population of that area such as invasive species, extreme weather, land use change, pollution and disease.

Lets take invasive species as environmental factor. Introduction of invasive species can cause a huge change in the ecosystem and affects the native population in that area. it increases the competition for food resources and decreases the survival rate of their preys.

For example: Water hyacinth (Eichhornia crassipes). It is an invasive plant species that has very bad impact of native population as well as other population, like it reduces biological diversity, oxygen loss, decreased phytoplankton productivity,  eliminate plants that animals use for nesting, and alter animal communities by blocking access to the water.

Thus invasive population can affect population by reducing biodiversity, water shortages, decreasing availability and quality of key natural resources, disturb the food chain and can cause natural calamities.

Invasive species affect the resources that native species are using and that decreases the carrying capacity of the native population as it disturbs the whole food chain.

3 0
3 years ago
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