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babymother [125]
3 years ago
8

Can someone help the question is What is the main difference between arteries and veins? The choices are in the picture.

Biology
1 answer:
anygoal [31]3 years ago
3 0

Answer - Arteries are blood vessels that are responsible for carrying oxygen-rich blood away from the heart to the rest of the body while veins are blood vessels responsible for carrying blood low in oxygen from the body back to the heart for reoxygenation.

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You are studying two traits in fruit flies:eye color where there are two colors, brown and redwing shape where there are straigh
Irina18 [472]

Answer:

e. Red segregated from brown in meiosis I, and straight segregated from curled in meiosis I.

Explanation:

A cross between two flies heterozygous for both genes produced an offspring with the phenotypic ratio of 9:3:3:1. This ratio is expected according to Mendel's law of independent assortment, which states that alleles of the same gene assort independently during gamete formation.

Before meiosis starts in flies, a single diploid cell duplicates its DNA, so each chromosome has 2 sister chromatids that contain the same information.

  • During meiosis I, <u>the homologous chromosomes separate</u> into two daughter cells. The chromosome number is reduced by half, but each chromosome has two sister chromatids.
  • During meiosis II, <u>the sister chromatids separate</u> and each daughter cell from meiosis I divides into two new daughter cells (to get the total of 4 haploid cells).

In a heterozygous fly, each homologous chromosome contains a different allele, and the sister chromatids are copies that carry the same allele. For that reason, both traits were segregated during meiosis I.

5 0
3 years ago
A type of agriculture in which the farmers focus on growing enough food to feed
hammer [34]

Answer:

subsistence agriculture

Explanation:

The land is limited, cultivation systems are basic, and there is not enough harvest to sell.

7 0
2 years ago
The organelle responsible for receiving, packaging, and shipping proteins is called the
zmey [24]
It is c your answer for your questions





3 0
3 years ago
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Can someone briefly explain what I need to do to calculate my VO2 max? Thank you
Luba_88 [7]

Answer:Although VO2 max is a good marker of fitness, it does present some downfalls. You can't really get an accurate measure .

Explanation:So, one way to determine your max VO2 pace is to warm up, then run for 8 minutes at the maximum intensity level you can sustain for 8 minutes. If, for simplicity's sake, you ran one mile, then your VO2 max training pace is 8 minutes/mile.

4 0
2 years ago
Plants respond to various sources of stimuli such as sunlight, water, and gravity. Plants in humid climates sometimes bend their
Shtirlitz [24]
Tropism is defined as the propensity of a plant to direct itself away (negative tropism)  or towards (positive tropism) the stimuli. Plants that bend their roots towards a more humid environment exhibits positive hydrotropism as humidity is related to the water content of the environment.

<em>Gravitropism and geotropism have the same definition wherein plants move towards or away from gravity.</em>
5 0
3 years ago
Read 2 more answers
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