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scoundrel [369]
3 years ago
13

Which of the following statements is true?Surface water can seep downward to become groundwater.Surface water can become groundw

ater, but groundwater cannot become surface water.Groundwater can become surface water, but surface water cannot become groundwater.Surface water and groundwater are unrelated.
Biology
1 answer:
Helen [10]3 years ago
7 0
The second one is true

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Which of the following is not true of saliva?
cluponka [151]
The answer is <span>B. contains enzymes that begin the breakdown of proteins.

Saliva is watery substance secreted by salivatory glands. <em>It cleanses the mouth</em> and maintenance oral hygiene. <em>It moistens the food</em>, so the created food bolus could easier pass into the esophagus. It also <em>carries food chemicals to taste receptors</em> so they can be tested. It contains enzymes involved in the food digestions. Some of them are amylase, which begins the breakdown of the starch, and lipase, which begins the breakdown of triglycerides. <u>There are no enzymes in the saliva that break down proteins</u>.</span>
5 0
3 years ago
Genetic variation makes individuals within a species different. Fertilization results in each offspring having a copy of each ge
murzikaleks [220]

Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in living organisms.[1][2][3]

The discoverer of genetics is Gregor Mendel, a late 19th-century scientist and Augustinian friar. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring. He observed that organisms (pea plants) inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene.

Trait inheritance and molecular inheritance mechanisms of genes are still primary principles of genetics in the 21st century, but modern genetics has expanded beyond inheritance to studying the function and behavior of genes. Gene structure and function, variation, and distribution are studied within the context of the cell, the organism (e.g. dominance), and within the context of a population. Genetics has given rise to a number of subfields, including epigenetics and population genetics. Organisms studied within the broad field span the domains of life (archaea, bacteria, and eukarya).

Genetic processes work in combination with an organism's environment and experiences to influence development and behavior, often referred to as nature versus nurture. The intracellular or extracellular environment of a cell or organism may switch gene transcription on or off. A classic example is two seeds of genetically identical corn, one placed in a temperate climate and one in an arid climate. While the average height of the two corn stalks may be genetically determined to be equal, the one in the arid climate only grows to half the height of the one in the temperate climate due to lack of water and nutrients in its environment.

3 0
3 years ago
Read 2 more answers
1. Genes that influence the expression of other genes are called
motikmotik

Answer:

substantive genes

Explanation:

bbdnshsbsnjsysvsndsgsnsmudgsnsnsns

3 0
3 years ago
A new chemical signal is discovered. It is secreted in low concentrations from keratinocytes in the skin, and it binds to recept
anzhelika [568]

Answer:

Explanation:

I would say no because hormones usually travel long distances via blood. This question makes it seem like it is short distance and does not talk about how the secreted entity travels. So my bet is no.

8 0
3 years ago
In pea plants, T is the allele for tall plants, while t is the allele for dwarf plants. If you have a tall plant, demonstrate wi
bagirrra123 [75]

Answer:

Explanation:since T- represent tallness

t-dwarf plant

TT- means the plant is homozygous tall i.e the allele T is the same 100% talk

Tt- means the plant is heterozygote tall which implied that though this plant express tallness its still have gene for shortness hidden in its cell and if crossed with a plant that is dwarf some of the offspring will be dwarf.

From the test cross all the gametes are heterozyote - Tt Tt Tt Tt

4 0
3 years ago
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