BIOLOGY MIDDLE SCHOOL

Water erosion occurs when water seeps into cracks or joints in rock and then freezes. true or false

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Answer 1
Answer: False - Water erosion occurs when water seeps into cracks or joints in rock and then freezes.
Answer 2
Answer:

FALSE because Water erosion occurs when water seeps into cracks or joints in rock and then freezes.


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MIDDLE SCHOOL

What are the possible evolutionary relationships between modern organisms and fossil organisms?

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Answer:

Patterns and anatomical similarities in the fossil record can be used to Students who understand the concepts can: ... Apply the patterns in gross anatomical structures among modern organisms and between modern organisms and fossil organisms to construct explanations of evolutionary relationships.

Explanation:

it just easy to understand instead of explaining it

HIGH SCHOOL

The first stage of embryonic development is _____. this process produces _____.

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Fertilization where upon the female egg is inseminated by the male sperm cell, this process produces the embryo (fertilized egg).
HIGH SCHOOL

Imagine that part of a population of flies is blown from the California coast to an offshore island. The island flies have no contact with the mainland flies for 10,000 years. Then an earthquake rearranges the landscape and the island is rejoined to the mainland. The former island flies can now mingle freely with the mainland flies. If attempts at mating between flies from the two groups are successful and the resulting offspring grow up strong and healthy and have offspring of their own, you could conclude that _____.

Answers

Answer:

Speciation didn't occur over the past 10,000 years

Explanation:

We conclude this, since the two populations could mate (if speciation occurred, there would be no reprodution).

For example, in allopatric speciation which occurs as a result of geographic isolation, the part of population becomes physically separated from the initial main population. There is no gene flow between these two populations and as a result the two populations  reach a high level  of genetic divergence. They can no longer interbreed (reproduction between them) which means they become two different species (speciation).

New populations evolve as result of mutation, genetic drift and natural selection.

COLLEGE

A friend argues that redundancy of the genetic code is due to wobble pairing. explain why this isn't the case.

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Redundancy refers to the phenomenon where more than one codon in DNA code for the same amino acid. Wobble pairing means base pairing that does not follow the canonical G-C and (U)A-T rule. Wobble pairing allows for a tRNA to specify for more than one type of amino acid during the translation process.


Answer:

1. Wobble pairing is the phenomenon where the last nucleotide of the triplet codon is mainly rendered useless most of the time. But Redundancy is the phenomenon where one codon codes for more than one amino acid.

2. They are just opposite to each other, where in Wooble Hypothesis, more than one codon codes same amino acid, but in DNA redundancy, one codon codes for more than one amino acid.

3. Redundancy is seen In lower organisms, but Wooble hypotheses is seen in all organisms.

HIGH SCHOOL

How do members of the two domain of prokaryotes differ?

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they have different chemical and structural makeup of their cells

HIGH SCHOOL

In an experimental procedure, the researcher has established multiple levels of a chemical, or amounts of light, or some other factor at the beginning of the experiment, in order to determine if and how much the biological system responds. The manipulated factor at varying levels is the

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Answer:

The correct answer is the independent variable.

Explanation:

An independent variable signifies a variable, which is supervised or changed in a scientific experiment. It signifies the reason or causes of an outcome. The independent variables refer to the variables, which are changed or manipulated by the researcher in order to examine the dependent variable.  

A modification in the independent variable straightforwardly makes a variation in the dependent variable. The influence on the dependent variable is recorded and measured. Thus, it is clear that the manipulated factor at varying levels in the given case is the independent variable.  

HIGH SCHOOL

Which organelles are found in only plant cells??

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Chloroplasts are the only that I can think of. They help in photosynthesis. 

Answer:Chloroplasts are the only that I can think of. They help in photosynthesis.

Explanation:

HIGH SCHOOL

Lazzaro Spallanzani and Louis Pateur both performed experiments hoping to disprove the hypothesis that organisms can form by spontaneous generation. Which of the following flask was included in Pasteur's experiment that was NOT included in ssspallanzani's? A. A flask that allowed air to enter but did not allow microorganisms to enter
B. A flask that did not allowair to enter but did allow microoganisms to enter
C. A flask that allowed neither air to enter nor microorganisms to enter
D. A flask that allowed both air th enter and microorganisms

Answers

B. 
hope this helps
'With hugs ~Liesel

Answer:

B. A flask that did not allow air to enter but did allow microorganisms to enter

COLLEGE

Designating a species a k-selected species means that the species likely exhibits which set of characteristics?

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This isnt really a question 
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