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lozanna [386]
3 years ago
9

Multiple questions about cells

Biology
1 answer:
rewona [7]3 years ago
8 0
Answer is a i think!!
You might be interested in
*Will Give Brainliest* Please put the steps of the process an oxygen molecule goes through to get from the outside to the blood
Deffense [45]

Answer:

nostrils

nasal cavity

pharynx

larynx

trachea

bronchus

bronchiole

smaller bronchial tube

alveolus

pulmonary veins

left atrium

capillaries

6 0
4 years ago
What is least likely to be an example of a variation within a species ?
Ket [755]

Answer:

Option D,  Number of limbs

Explanation:

Options for the question

a. Birth weight

b. Hair color

c. Number of offspring

d. Number of limbs

Solution

Variation within a species is caused due to genetic differences governed by varying allele frequencies and duet to environmental factors that somewhere effect the expression of the genetic potentials thereby causing phenotypic variation.  

Number of limbs is a physical characteristics, very unlikely governed by genetic variation. While factors such as hair color (grey, black, white etc.), height (tall, short, medium) etc. are governed by genetic variation as a result of which they have several phenotypic variations.

Hence, option D is correct

7 0
4 years ago
In this experiment, how many chromosomes were present when meiosis i started? 2. in this experiment, how many nuclei are present
wariber [46]
1. The answer depends on your picture.
DNA is packed and condensed with proteins in the form of chromosomes.

Since the process of division is going to start that means each chromosome will have an X shape. They had the DNA content copied once (in the S phase). The original, plus the copy created, form the X.

You just have to count the number of X's in the picture.

2. The answer is 4 nuclei.
Since the process of division happening is meiosis, that means that four new cells will be originated from a cell that's dividing.
So, four new cells each one with a nucleus, that means 4 nuclei in total.

If this was mitosis, only 2 new cells would be formed which means 2 nuclei

3. The number of chromosomes depends on your picture/exercise.

The answer would be half of the number of chromosomes that you started in the meiosis 1.
This time, chromosomes won't have an X shape since the copies were separated. At the end of the process, each chromosome has just one chromatid.
6 0
4 years ago
What is the ph of a solution with a [H+] of 10^-8
ruslelena [56]

Answer:

strong acidic

Explanation:

the ph of solutions 10-8 is strongly acidic according to the ph scale hence a solution with [H+] of 10-8 is strongly acidic

5 0
3 years ago
8. if you removed all the cheetahs from a large area of savanna which of the following is a direct effect that could be explaine
steposvetlana [31]

Answer: Option B

Explanation: If all the cheetahs from the savanna is removed then the population of the gazelle will increase.

The shrubs and trees are producers that is eaten up by the herbivores animals. They at not eaten by the cheetah.

The lion is also not eaten up by the cheetah. There will be no effect o the population of the lions.

Hence, there will be an increase in the population of the gazelle.

7 0
3 years ago
Read 2 more answers
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