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sveta [45]
3 years ago
8

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?a. Diffusion b.

Facilitated transport c. Active transport d. Osmosis e. Crenation
Biology
1 answer:
Fittoniya [83]3 years ago
3 0

Answer:b. Facilitated transport

Explanation:in the usual activities of the cell,it's cell membrane is responsible for the movement of substance in and out of the cell.

Such substances include nutrients,water, oxygen etc.

The plasma membrane select the substances that it allows into the cell thus it is said to be selectively permeable.

The plasma membrane of the cell has a phospholipid bilayer made up of cholesterol, proteins and glycoproteins.

The proteins on the membrane are useful for facilitated diffusion.

In this diffusion process,the proteins helps to carry large molecules across the cell membrane.such molecules includes glucose,amino acids etc.

In the process energy is not expended so it is a type of passive transport.

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When a closely related species evolve in different directions, they become increasingly different. what is this known as?
Hitman42 [59]
I know this answer but it is really commutated 
6 0
3 years ago
Describe the factors that influence an individuals phenotype
atroni [7]

Answer:

Physiology, behavior and morphology are considered as phenotype of an individual as these attributes can be observed. Example of  phenotypes include wing length, hair color, skin color and  height.

<u>There are basically two factors that influence the phenotype:</u>

<u>(1) Genotype or Genetic information of the individual:</u> Some of the phenotypes such as height and skin color are transmitted genetically from generation to generation. Genetic information is the transfer of genes that carry some of the specific genetic information and pass it to another generation which is visible in their phenotype.

(2)<u> Environmental influence:</u> As the phenotype attributes are variable so they are highly influenced by the environment or surrounding they are living. Environmental condition such as temperature, diet, humidity, oxygen levels, and the presence of mutagens affects the phenotype of an individual.

Hence, Genotype and environmental factors influence an individuals phenotype.

7 0
3 years ago
1) What is the difference between regular and diffuse reflection?
Sedbober [7]

Explanation:

Regular reflection happens when light reflects off an awfully smooth surface and forms a clear picture.

Diffuse reflection happens when light reflects off a unpleasant surface and forms a hazy picture or no picture at all.

6 0
3 years ago
______ is a discipline of study that involves an examination of proteins and how the proteins encoded by genes interact to produ
Andrej [43]

The answer is Proteomics.

<u>Proteomics</u> is a discipline of study that involves an examination of proteins and how the proteins encoded by genes interact to produce cell and tissue types.

What is Proteomics?

The extensive study of proteomes is known as proteomics. An organism, system, or biological setting produces a set of proteins known as a proteome. We might speak of an organ or a species' proteome (like that of Homo sapiens) (for example, the liver). The proteome is dynamic; it varies from cell to cell and alterations occur over time. The underlying transcriptome is somewhat reflected in the proteome. However, in addition to the relevant gene's expression level, a number of other factors also affect protein activity, which is frequently measured by the rate at which the processes in which the protein is engaged react.

Proteomics is employed to look into:

  • When and where do proteins expressed.
  • rates of protein synthesis, degradation, and abundance at steady state.
  • how proteins are altered, for as by phosphorylation and other post-translational modifications (PTMs).
  • the transfer of proteins among subcellular spaces.
  • protein involvement in metabolic processes.
  • what interactions proteins have with one another.

To know more about Proteomics click on the link below:

brainly.com/question/14138798

#SPJ4

5 0
2 years ago
Roopa is a research student, and as a part of her research on roots, she collected four different types of plants- Rice, Hibiscu
valentina_108 [34]

Answer:

Rice, Corn and Bamboo

Explanation:

Parallel venation is a kind of venation in which the veins runs parallel to the to the length of the leaves from its base of the leaf to the apex of the leaf or the tip of the leaf.

It is a characteristics of many monocot plants.

Few example of plants having parallel venation are grasses, bamboo, rice, corns, banana, musa, canna, etc.

8 0
3 years ago
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